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HISTORICAL PERSPECTIVE ON EDUCATIONAL TECHNOLOGY

                                                                     P a t r i c k Suppes
                                                                     Lucie Stern Professor                   of Philosophy
                                                                     Stanford University



        A a comment on t h e p a p e r
         s                                             by D r . A l i o t o and M s . "hornton, I would
                                                                                                :

like to try           to putthecurrenteffortsineducationaltechnologyin

historical perspective,                      From t h i s p e r s p e c t i v e      I move t o t h e p r e s e n t ,
                                                                                                                                        i"

with some r e m a r k s a b o u t t h e e x t e n s i v e e f f o r t s i n                 San F r a n c i s c o , and on

t o some p r e d i c t i o n s a b o u t t h e f u t u r e .


                                  Past EducationalTechnologies

         I can i d e n t i f y a t l e a s t f i v e          major t e c h n o l o g i c a l i n n o v a t i o n s      in

the p a s t t h a t      are comparable t o t h e c u r r e n t c o m p u t e r r e v o l u t i o n .
                                                                                                                                        f




Written Records

        The f i r s t i s t h e i n t r o d u c t i o n         of w r i t t e n r e c o r d s f o r      teacI1ing

purposes i n a n c i e n t times.                 W do n o t know e x a c t l y when t h e u s e
                                                   e                                                                of

writtenrecords              f o r instructionalpurposesbeganbut                                  w e do have, as early

as Plato's Dialogues, wrritten i n t h e f i f t h c e n t u r y                              B.C.,     sophisticated                   L




objections to the               use of w r i t t e n r e c o r d s .

        Today noone             would d o u b t t h e v a l u e         of w r i t t e n m a t e r i a l i n e d u c a t i o n ,

but there were v e r y s t r o n g              and c o g e n t o b j e c t i o n s t o t h i s v e r y          earliest

innovation $ 2 e d u c a t i o n ,
            1                                  The o b j e c t i o n s were t h e s e :            a w r i t t e nr e c o r d      is

very impersonal; i t i s very uniform; í t does n o t a d a p t t o t h e i n d i v i d u a l
                                                                                                                                            t
                                                                                                                                            i



s t u d e n t ; i t d o e sn o te s t a b l i s hr a p p o r tw i t ht h es t u d e n t .                 I n o t h e r words,




                                                                                                                                            F


                                                         30
                                                                                                                                             s'
Socrates and t h e a n c i e n t S o p h i s t s , t h e t u t o r s                 ofstudentsinancient

Athens,objected                t o introducingwrittenrecords                            and d e s t r o y i n g t h e k i n d

ofpersonalrelationbetweenstudent                                     and t u t o r t h a t was a p a r t of t h e i r

main r e a s o n f o r b e i n g .

         It has become a f a m i l i a r s t o r y i n o u r                    own time t h a t a t e c h n o l o g i c a l

innovation has side effects that                              are n o t a l w a y s u n i f o r m l y b e n e f i c i a l .

It i s i m p o r t a n t t o r e c o g n i z e t h a t t h i s           i s n o t a new a s p e c t of innovation

b u t h a s been with us from the beginning.


Libraries

         The secondinnovation                      was the founding               of l i b r a r i e s i n t h e a n c i e n t

world,the           most important example b e i n g t h e                        famous Alexandrian Library

t h a t was establishedaround                        300 B.C.          Because of c e r t a i nd e m o c r a t i c

traditions,thepreeminence                            of t h e c r e a t i v e work i n p h i l o s o p h y           and

p o e t r y , i t i s e a s yt ot h i n k            of Athens as t h e i n t e l l e c t u a l c e n t e r                ofthe

H e l l e n i cw o r l d .I nf a c t ,t h a tc e n t e r               was r e a l l yA l e x a n d r i a .        From about

250 B.C.         t o A.D.       4 0 0 , n o to n l y        was A l e x a n d r i a t h e      mostimportantcenter

of mathematicsandastronomy                                 in the ancient world--it                  was a l s o a major

c e n t e r of l i t e r a t u r e , e s p e c i a l l y b e c a u s e       of t h e c o l l e c t i o n i n t h e

AlexandrianLibrary.                       The f i r s t r e a l beginnings of c r i t i c a l s c h o l a r s h i p

inthewesternworld                       in literature, the editing                          of t e x t s , t h e a n a l y s i s

of s t y l e , t h e d r a w i n g        up of b i b l i o g r a p h i e s , t o o k p l a c e i n t h e A l e x a n d r i a n

L i b r a r y .T h i sr e v o l u t i o ni ne d u c a t i o nc o n s i s t e dn o ts i m p l yo fh a v i n gi n

one p l a c e a l a r g e number of p a p y r u s m a n u s c r i p t s b u t i n t h e o r g a n i z a t i o n

 of l a r g eb o d i e so fl e a r n i n g ,S c h o l a r s               from a l l overthewesternworld




                                                              31
came t o A l e x a n d r i a t o s t u d y        and t o t a l k t o o t h e r s ,

        Libraries of a s u b s t a n t i a l n a t u r e were t o b e found i n o t h e r major

c i t i e s of t h e a n c i e n t w o r l d , n o t      t o mention the large collections                           of

l e a r n i n gi nC h i n a ,I n d i a ,      andKorea.


Printing

        The t h i r d i n n o v a t i o n     of g r e a t h i s t o r i c a l i m p o r t a n c e i n e d u c a t i o n

was t h e move f r o m w r i t t e n r e c o r d s t o p r i n t e d             books,         I n t h e western

world we i d e n t i f y the b e g i n n i n g d a t e           of t h i s J n n o v a t i o n w i t h t h e
                                                                                                                              i




p r i n t i n g of t h eG u t e n b e r gB i b l ei n          1452.         It í s i m p o r t a n tt or e c o g n i z e ,   i
                                                                                                                              l




however, t h a t t h e r e was e x t e n s i v e u s e             of b l o c k p r i n t i n g      i n Koreaand

China three o r four hundredyears                             earlier.          Nearly h a l f a millennium

later í t i s d i f f i c u l t t o have a v i v i d s e n s e                  of how i m p o r t a n t t h e

innovation of p r i n t i n gt u r n e do u tt ob e ,I nt h ea n c i e n tw o r l d                              of t h e

Mediterranean there                 were only a few m a j o r l i b r a r i e s ,               a number so small

thattheycouldbecounted                          on t h e f i n g e r s o f        onehand.           One of t h e

famous a s p e c t s of Alexandria,forexample,                                was thewealth              and

magnitude of i t s l i b r a r y , and the Alexandrian Library                                    of 100 B,C.          had

f e w competitors.              The reason í s obvious:                      it w a s i m p o s s i b l et oh a v e

l a r g e numbers of c o p i e s of manuscripts reproduced                                when a l l copying

had t o b e done t e d i o u s l y by hand,                    The i n t r o d u c t i o n of p r i n t i n g i n the

fifteenth century produced                      a radical innovation--indeed                         a revolution--

i n t h e d i s t r i b u t i o n of i n t e l l e c t u a l and e d u c a t i o n a l materials.                  By t h e

middle of the sixteenth century not only European institutions                                                   but

wealthyfamilies                as w e l l had l i b r a r i e s of s e r i o u s p r o p o r t i o n s .




                                                         32
Once again, however, there                         were d e f i n i t e t e c h n o l o g i c a l side e f f e c t s

t h a t were not u n i f o r m l y b e n e f i c i a l .             Those who know t h e a r t and t h e

beauty of t h e m e d i e v a l m a n u s c r i p t s t h a t p r e c e d e d t h e i n t r o d u c t i o n              of

printing can appreciate that                           mass p r i n t i n g was regarded by soma a s a

degradation of the                  s t a t e of reproduction.

         It is a l s o i m p o r t a n t t o h a v e             a sense of        how slow the impact                  of a

t e c h n o l o g i c a lí n n o v a t l o nc a n      sometimesbe.               It was n o t u n t i l t h e          end

of t h e e i g h t e e n t h c e n t u r y t h a t         books were u s e d e x t e n s i v e l y f o r t e a c h i n g

i ns c h o o l s .I na r i t h m e t i c ,f o re x a m p l e ,               most t e a c h e r sc o n t i n u e dt o

u s e o r a l methods throughout the nineteenth century and                                          i t was n o t

u n t i l almost the beginning of                        t h e present century that appropriate

elementarytextbooks                     i n mathematicswereavailable,                            It i s c e r t a i n l y

m hope t h a t i t w i l l . not r e q u i r e 500 years t o d i s t r i b u t e computers
 y

i n t o s c h o o l s , a figure comparable                      to what it took to d i s t r i b u t e

a r i t h m e t i c textbooks i n t os c h o o l s .F o r t u n a t e l y , t h es c a l e                of

dissemination in the                   modern world is ofan                     entirely different order

from what i t was i n t h e p a s t . P e r h a p s                       m f a v o r i t e example i s t h e
                                                                           y

estimate that             i t tookoverfiveyears                          f o r t h e news of J u l i u s C a e s a r ' s

a s s a s s i n a t i o nt or e a c ht h ef u r t h e s tc o r n e r s            of t h e Roman Empire,                 Today

such an assassination                    would be known throughout the world                              i n a matter

of minutes.

         With r e g a r d t o t h e p a c e            a t whichbookshavebeenintroduced                                 into

education, i t would be a m i s t a k e t o t h i n k t h a t t h e r e                          was something

peculiarabouttheuse                        of methods of r e c i t a t i o n i n t h e e l e m e n t a r y s c h o o l

u n t i l Zate i n t h e n i n e t e e n t h c e n t u r y ; s t o r i e s           of a comparable s o r t a l s o




                                                             33
p
                                                                                                                                   F



hold a t t h e u n i v e r s i t y l e v e l .           According t o a t least oneaccount,the

last professor at the University of                                Cambridge i n England who i n s i s t e d

on f o l l o w i n g t h e r e c i t a t i v e t r a d i t i o n t h a t d a t e s b a c k             t o t h e Middle

Ages was C . D. Broad.                    A s l a t e as t h e 1 9 4 0 ' s h e d i c t a t e d            andthen

repeatedeachsentencesothatstudents                                          would have adequate                time t o

write e a c hs e n t e n c ee x a c t l y           as d i c t a t e d .       I cannotimaginecontemporary

university students tolerating such methods,


Mass Schooling

         The f o u r t h i n n o v a t i o n ,      and a g a i n o n e t h a t         w e now a c c e p t as a

completeand            n a t u r a lp a r t      of o u r s o c i e t y ,      i s mass schooling.                W have
                                                                                                                   e

a tendency i n t a l k i n g a b o u t o u r s o c i e t y t o p u t s c h o o l s                      and f a m i l i e s

i n t ot h e    same category of m a j o r i n s t i t u t i o n s .                    But i t i s extremely

important t o r e c o g n i z e t h e g r e a t p s y c h o l o g i c a l d i f f e r e n c e b e t w e e n t h e

s t a t u s of t h ef a m i l y        and t h e s t a t u s       of schools.Families                      are r e a l l y

deep intoourblood                    and o u r c u l t u r e .         The evidence of f a m i l i e s i n one

form o r a n o t h e r b e i n g t h e           most i m p o r t a n t c u l t u r a l u n i t         goes back

thousands of years.Schools                            are n o t a t a l l comparable;they                        are, we

mightsay,very                much Johnny-come-lately                        t o o u rc u l t u r e .       A hundred
                                                                                                                                   ,   t
                                                                                                                                   t .
years ago i n 1870, f o r example,only                                two p e r c e n t OE young people

graduatedfromhighschool                            í n the U n i t e d S t a t e s .         A h u n d r e dy e a r sb e f o r e

that only         a v e r y small p e r c e n t a g e e v e n f i n i s h e d t h i r d o r f o u r t h g r a d e .

I cannot give             youan        exact percentage because our record-keeping, that

ris, o u r s o c i a l s t a t i s t i c s ,       are n o t much more than a h u n d r e d y e a r s o l d

and we have no s e r i o u s i d e a of howmany                             s t u d e n t s were a c t u a l l y i n s c h o o l




                                                            34
two hundred y e a r s a g o , e x c e p t t h a t               we do know t h a t t h e number was q u i t e

small.

         Even as s h o r t a p e r i o d as f i f t y y e a r s ago, i n most of the world

less than one percent of the population completed secondary school.

During t h e r e c e n t u p h e a v a l s c o n n e c t e d w i t h t h e " c u l t u r a l r e v o l u t i o n " i n

China t h e e l e m e n t a r y s c h o o l s , n o t t o s p e a k            of c o l l e g e s andsecondary

schools, were c l o s e d f o r               several y e a r s . I n o u r s o c i e t y              as w e now t h i n k

of i t , i t i s u n b e l i e v a b l e t o c o n t e m p l a t e c l o s i n g t h e e l e m e n t a r y s c h o o l s

f o r such a p e r i o d of time.                  From a C h i n e s e h i s t o r i c a l p e r s p e c t i v e ,        how-

e v e r , i t w a s notsuch             an important matter, f o r Chinesecultureextends

back continuously several thousand years                                   and t h e r e i s i n t h a t c u l t u r a l

t r a d i t i o n no s a l i e n t p l a c e f o r      mass schooling.

         I n many d e v e l o p i n g c o u n t r i e s       of t h e w o r l d t o d a y t h e b e s t t h a t c a n

be hoped i s t h a t t h e m a j o r i t y             of t h e young people w i l l be given four

grades of elementaryschool.Untilthepopulatíongrowth                                                        i s brought

i n check, i t w i g 1 t a k e all a v a i l a b l e r e s o u r c e s                t o achievethis              much.

The p o s i t i o n of America as a w o r l d l e a d e r i n e d u c a t i o n                      i s sometimes n o t

adequately recognized by                     m fellow Americans, because
                                              y                                                    w e a c c e p t as so

much a p a r t of o u r c u l t u r e t h e c o n c e p t              of al1 young peoplecompleting

secondaryschool                and a highpercentagegoing                          on t o c o l l e g e .        In f a c t ,

our leadership in creating                       a s o c i e t y w i t h mass education i s perhapsone

of t h e most i m p o r t a n t a s p e c t s          of American i n f l u e n c e i n t h e w o r l d .

         A s r e c e n t l y as t h e l a t t e r p a r t o f t h e n i n e t e e n t h c e n t u r y t h e

British hilosopher, ohn tuart
       p          J    S                                    M i l l , d e s p a i r e d of democracy                     ever

r e a l l y workinganywhere                 i n t h e world f o r onereason--it                        was simply not




                                                           35
.   b   i   .




p o s s i b l et oe d u c a t et h em a j o r i t y              of t h e p o p u l a t i o n . I n h i s       view i t was

notpossibletohave                          a significant percentage                     of t h e p o p u l a t i o n a b l e     tQ

read and t o b e i n f o r m e d a b o u t p o l i t i c a l e v e n t s .                    A s i n t h e case of many

s u c hp r e d i c t i o n s ,h e          was very much i n e r r o r .                The r e v o l u t i o n i n mass

schooling i s one of t h e most s t r i k i n g phenomena of t h e t w e n t i e t h c e n t u r y .


Testing

               The f i f t h e d u c a t i o n a l i n n o v a t i o n     i s t e s t i n g , which i s i n many ways

o l d e rt h a nt h ec o n c e p t             of mass schooling.                  The g r e a t t r a d i t i o n    of t e s t i n g

was f i r s t e s t a b l i s h e d , i n China; t e s t i n g t h e r e began i n t h e f i f t h c e n t u r y

A . D . and became f i r m l ye n t r e n c h e d                   by t h et w e l f t hc e n t u r y      A.D.      There i s

a continuoushistory                        from t h e t w e l f t h c e n t u r y t o t h e          end of t h e n i n e t e e n t h

centuryintheuseof                            tests f o r t h e s e l e c t i o n        of mandarins--the              civil
                                                                                                                                         #


s e r v a n t s who r a nt h ei m p e r i a l               government o f China.                  The c i v i l service

positions held                  bymandarins             were regarded as t h e e l i t e s o c i a l p o s i t i o n s

in the society.

               The importance of t h e s e tests i n C h i n e s e s o c i e t y í s w e l l a t t e s t e d

t o by t h el i t e r a t u r e            of v a r i o u sp e r i o d s .         I f 0n.e examines, f o r example,

t h e l i t e r a t u r e of t h e f i f t e e n t h o r s i x t e e n t h c e n t u r y , o n e             i s impressed

by theconcernexpressed                             f o r performance on tests.                     A v a r i e t y of l i t e r a r y

tales focused on t h e q u e s t i o n of whether sons                                  would s u c c e s s f u l l y c o m p l e t e

t h e tests andwhat                     this would mean f o r t h e f a m i l y ,                   (As youmightexpect,

in those days                 women had no p l a c e i n t h e                management o f t h e s o c i e t y           and

no place as a p p l i c a n t s f o r                 civil s e r v i c e p o s i t i o n s , )          The procedures of

s e l e c t i o n were as r i g o r o u s as t h o s e f o u n d i n                   a contemporarymedical




                                                               36
s c h o o lo r    a g r a d u a t es c h o o l    of b u s i n e s s i n t h e U n i t e d S t a t e s .         In many

p e r i o d s fewer than two p e r c e n t of t h o s e who began the tests (whichwere

arrangedin            a complicatedhierarchy)successfullycompletedthesequence

and were put on t h e l i s t of e l i g i b l e mandarins.

        Although t e s t i n g h a s a h i s t o r y t h a t g o e s b a c k h u n d r e d s                 of y e a r s ,

i n many ways i t i s p r o p e r t o r e g a r d t e s t i n g                as a twentieth-century

innovation because                 it was o n l y i n t h i s c e n t u r y t h a t t h e s c i e n t i f i c           and

t e c h n i c a ls t u d y    of tests began.              It is o n l y i n t h i s c e n t u r y t h a t t h e r e

hasbeen          a serious effort to understand                         and t o d e f i n e what c o n s t i t u t e s

a good t e s t f o r a g i v e n a p t i t u d e ,           a givenachievement,or                         a given skill.

Moreover, t h i s i n t e n s i v e s t u d y          of t e s t i n g from a t e c h n i c a l s t a n d p o i n t

was p r i m a r i l y a focus of American research by such e d u c a t i o n a l

psychologists a s Edward L. Thorndike.                                The t r a d i t i o nt h a t         Thorndike

beganhas          become a majorone                  i n our society            and i s a source of c o n t i n u a l

controversy n
           i                 terms of i s s u e s of f a i r n e s s and o b j e c t i v i t y .C e r t a i n l y

currerLt s p e c u l a t i o n s a s t o t h e r e a s o n s f o r t h e d e c l i n e              i n theverbal

and mathematical scores                    on t h e S c h o l a s t i c A p t i t u d e      Tests provide an

e x c e l l e n t exampleof           the kind        of d e t a i l e d s c r u t i n y w e g i v e o u r        tests

t h a t is completelyuncharacteristic                            of any t r a d i t i o n o f t e s t i n g ,        whether

i n China,Europe                ortheUnited             States p r i o r t o t h i s c e n t u r y .

         The f i v e i n n o v a t i o n s t h a t      I havediscussed--writtenrecords,

libraries,printedbooks,schools,                                and tests--are t h e v e r y f a b r i c                ofour

educationalsystemtoday.                          It i s almostunthinkabletocontemplate                                  a

modern educational system without each of these innovations playing an

important part.




                                                          37
O f these five technologies,                        nonehadbeen                 i n any way adequately

E o r e c a s to ro u t l i n e d     a t t h e time i t was introduced,                           O f course, a f e w

individuals foresaw the consequences                                andhadsomething                     to say about

those c o n s e q u e n c e s , b u t c e r t a i n l y t h e d e t a i l s           of t h e u s e       of any of

these f i v e technologies had not been adequately foreseen,                                                  l a m certain

t h a t t h e same t h i n g will be t r u e of technologies now developing €or

use í n t h e f u t u r e ,         and s o I do          n o t want t o a p p e a r c o n f i d e n t t h a t

what I s a y i s a c o r r e c t s c e n a r i o f o r t h e f u t u r e .                    But I want t o s a y

somethingabout
             each                     of t h e f i v e . F i r s t ,           I havementioned,
                                                                                              and                         I want

t o re-emphasize,              the very recent              and h i s t o r i c a l l y v e r y t r a n s i e n t

characterofschools.                       It i s a phenomenon i n a g e n e r a ls e n s eo ft h e

l a s t hundred y e a r s i n t h e            mostdeveloped                  p a r t s of t h e w o r l d ,       and a

phenomenon of the l a s t t h i r t y y e a r s o r s o ( t h a t                         i s , s i n c e World W r 1 )
                                                                                                                 a   1

i n t h e underdeveloped p a r t s sf t h e w o r l d .                          Now, anTmportantquestion

f o rt h ef u t u r e      is t h i s : I n f i f t y          o r onehundred               years, w i l l w e a b o l i s h

schools?          Will we d e l i v e r i n t o t h e           home, o r i n t o small neighborhood

u n i t s , by t e c h n o l o g i c a l means a l l c u r r i c u l u ma n di n s t r u c t i o n ?F u r t h e r ,

w i l l thedesiresorgoals                      of t h e i n d i v i d u a l , t h e f a m i l y , t h e p a r e n t s ,

or the neighborhood group be such that children                                           will n o t b e í n s c h o o l ,

but a t home o r i n t h e neighborhood?                            The answers t o t h e s e q u e s t i o n s

are not e a s y t o p r e d i c t o r t o f o r e s e e .

        The same k i n d of f o r e c a s t may b e made f o r books.                                   The importance             '




of books t h a t we have f e l t f o r several hundred y e a r s , since the

beginning of the Renaissance,                         and t h a t h a s b e e n a s s o c i a t e d            with t h e

developmept
          and                 education of a ni n f o r m e dc i t i z e n r y ,                  may f a d e away.           I




                                                          38
thinkthat            all of us, a t l e a s t t h o s e               of m age,haveseen
                                                                                      y                                  t h i s already

            i nt h ec a s eo f           young s t u d e n t s .         Some r e c e n t s t u d i e s h a v e i n d i c a t e d t h a t

            the cultural reference points                            of t h e younger generation are no longer

I ,
t '
        '   t o befound            i n books, o r i n c u r r e n t n o v e l s , b u t i n t e l e v i s i o n                 andmovies,

                     Inthe         case of tests, I also p r e d i c t t h a t t h i s c l a s s i c a l t e c h n o l o g y

            w i l l d e c r e a s ei ni m p o r t a n c e .          I b e l i e v et h a t      tests w i l l d e c r e a s e i n

            importance because                     w e will h a v e t h e t e c h n o l o g i c a l       means t o keep a much

            more s a t i s f a c t o r y and much more d e t a i l e d r e c o r d o f t h e l e a r n i n g                        of

            i n d i v i d u a ls t u d e n t s .        Thus inferencesabouttheperformance                                  of s t u d e n t s

i,
    1
            and t h e i r c a p a b i l i t i e s f o r t a k i n g n e x t s t e p s           w i l l dependupon              a much
L i



t       '

            more s u b s t a n t i a l r e c o r d ,         a much b e t t e r b a s i s o f i n f e r e n c e t h a n           w e have

            íncurrent            tests,

                     A s f o rl i b r a r i e s ,t h e y          w i l l be totally transformed,                        1 f e e l more

            confident of t h i s p r e d i c t i o n t h a n                  of of
                                                                               any             t h eo t h e r s .E l e c t r o n i c

            access w i l l be widely available in                              homes, i n o f f i c e s , and i n s c h o o l s

            of what o t h e r o r g a n i z a t i o n a l k i n d             we have.There               w i l l belibraries               but

            they w i l l b e e l e c t r o n i c l i b r a r i e s .
    I
                     Finally,what                  abouts t h e w r i t t e n r e c o r d ?        The w r i t t e n r e c o r d       will

            undoubtedlycontinue                       t o haveimportance,but                     I think that            when i t comes

            t o teaching,theobjectionsfoundinPlato'sDialogues                                                       t o thecold             and

            n e u t r a l w r i t t e n word a s opposed to t h e warm and f r i e n d l y v o i c e o f t h e

            teacher w i l l o n c e a g a i n b e h e a r d a n d p e r c e i v e d a s s e r i o u s o b j e c t i o n s ,

            What I a s a y i n g i s t h a t , i n s t a r t i n g
                   m                                                                t o thinkaboutthefuture,                           w e can

            forecastobsolescence                        o r semi-obsolescence for a l l of t h e g r e a t

            technologies of t h e past--and                           t h a t is proper and a p p r o p r i a t e .




                                                                         39
c
                                                                                          1
                                                                                          !




              Issues Raisedby Computer-Assisted            Instruction

     The current operational use of computer-assisted instruction in

many schools in this country, use that is well exemplified by the
                            a

detailed discussionof Alioto and Thornton, raises number of issues
                                               a

                                          I would now like to turn.
of a broad educational and social kind to which

I will discuss four rather closely related issues that have had
                                                       a certain

prominence in the discussion computer-assisted instruction (CAI):
                          of

1) individualization of instruction, 2) standardization of instruction,

3) complexity of instruction,         and4 ) freedom ín education.


Individualization of Instruction

     The first issue centers around the claim that the deep use
                                                        of

                                                     a rigid regime
technology, specifically computer technology, will impose

of impersonalized teaching. Perhaps the best ímage this issue in h e
                                                 of            t

                   of
popular press ís that student            protest     at    being            by computer
                                                                    represented

records in the files the centralschool administration.
                  of

     To those                       of
                  advancing this claim deep impersonalization, ít is

important to say that indeed this is possibility, Computer technology
                                   a

could be used in t h i s way, 2nd ín some instances probably will. This
                                                     it

is   little    different   from      saying   that   there    are    many teaching
                                                                       of kinds

and many ways     ín   which   the    environment     of    learning     and may be
                                                                             teaching

debased, The important point to insist upon, however, ís that ís
                                                              ít                              i
certainly nota necessary aspectof the use of the technology.

     Indeed, our claim     would e that oneof the computer's most
                                b

important potentialsís exactly the opposite. Computers can make




                                       40
learning and teaching more personalized rather than s o . Students
                                                    less

will   be   subject     to   less   regimentation    and   lockstepping,   because   computer

systems     will   be   able   to   offer   highly   individualized   instruction.

       It is important that the remark about individualized instruction

not be passed                                        in
             off as sloganeering. For many years,courses the

methodology of teaching have emphasized the importanceteaching
                                                   of

according to the needsf individual students and therefore attempting
                     o

                                                It
to individualize instruction as much as possible. is recognized,

however, by anyone who has examined the structure schools either
                                           of our

at the elementary- or secondary-school level that a high ofdegree

individualization ís extraordinarily difficult to achieve when the

                                          25 to
ratio of students to teachers is approximately 1.

       One direct approach is to reduce this ratio to something or
                                                              5 like

10 to 1, but the economics this approach is totally unfeasible in
                         of

                                     All
the long run and on a widespread basis. the evidence points to

the fact that the cost having first-rate teachers in the classroom,
                    of

training these teachers appropriately, and providing them with the kind

of salaries that will be competitive with other technical and

                                                       for
professional jobs in our society will simply make it impossible

schools to afford any drastic reduction in the student-teacher
                                                         ratio.

One of the few real opportunities for offering individualized

                        of
instruction lies in the use computers as instructional devices.

       I do wishto emphasize thatI do not envisage replacing teachers
                                                   It
entirely, especially at the elementary-school level. would be

                                           technology only20 to
my estimate that even under the maximumof use




                                       41
30 percent of students' time in the elementary school would be spent at

                                                     of
computer terminals. While classes or substantial parts classes were

working at terminals, teachers would be able to work with the remainder.

Moreover, they would be able to work intensely with individual

students, partly because some the students would be at the terminals,
                           of

and   equally    because    routine        of
                                       aspectsteaching    would   be   handled    by    the

computer system.

                                                           At
      A t the post secondary leve1,matters are very different.most

                                      now
colleges and universities,students do not receive a great                 dealof

individual attention from instructors. Certainly
                                               we can all recognize

the   degree     of   personal   attention     ís   greatercomputer
                                                     in a              program

designed to accommodate itself to individual students' progress than

                   on
in the lecture course a general subject that more than 200
                                             has

students in daily attendance.

      Complex intellectual problems are yet to be solved in offering

tutorial   computer      programs     on    advanced   subjectse university
                                                             t h at              level.

1 do believe     that the teaching basic skills ranging from elementary
                                 of

mathematics to foreign-language instruction at the college level
                                                               can

well be performed      by   computer-assisted       cocrses,
                                                         - Extensive   results     of

many efforts in computer-assisted instruction at the university level

at Stanford are reported in Suppes
                                 (3.981).


Standardization of Instruction

      A second    common claim is that the widespread use of computer

technology w i l l lead to excessive standardization education. This
                                                   of




                                       42
                                                                                              d
claim was r a i s e d r e p e a t e d l y i n g e n e r a l d i s c u s s i o n s w i t h e d u c a t o r s               and

t h ei n t e r e s t e dp u b l i c .I n         1968 when I w a s l e c t u r i n g oncomputer-

assisted instruction in Australia, exactly this                                         claim was made byone
                                                                                                                                   -.
of t h e s e n i o r p r o f e s s o r s     of e d u c a t i o n i n A u s t r a l i a .         When h e was asked

howmany         d i f f e r e n t books on A u s t r a l i a n h i s t o r y are used i n t h e A u s t r a l i a n

secondaryschools,thereply                           was t h a t t w o books are used i n over 90

p e r c e n t of t h e c l a s s e s .

         To t h o s e f a m i l i a r w i t h c u r r e n t p r a c t i c e s i n t e x t b o o k a d o p t i o n         and

useinelementary                  and secondaryschools,                     i t i s clear t h a t a highdegree

of s t a n d a r d i z a t i o na l r e a d y    e x i s t s i n educatiorn,                It i s i m p o r t a n tt o

admit a t once              t h a t a s t i l l g r e a t e rd e g r e e      of s t a n d a r d i z a t i o nc o u l d

arise from thewidespreaduse                            of computers.              This i s a p o s s i b i l i t y n o t

t ob ed e n i e d .         It í s , however, i n no sense a necessity.                                  It would

technically be possible for                        a s t a t e department of e d u c a t i o n , f o r                 example,

to require that              a t 1O:lO i n t h e morningeveryfourth-graderbeadding

one-half        and o n e - t h i r d , o r e v e r y j u n i o r h i g h s c h o o l           be reciting the

amendments t ot h eC o n s t i t u t i o n .                The c e n t r a ld a n g e r        o f thetechnology

i s that e d i c t s c a n b e e n f o r c e d          as w e l l as i s s u e d , and many persons are

r i g h t l y concerned a t t h e s p e c t o r             of r i g i d s t a n d a r d i z a t i o n t h a t c o u l d

be imposed.

         I think we would a l l a g r e e t h a t t h e e v e r - i n c r e a s i n g                   use of books

from t h e s i x t e e n t h c e n t u r y       t o thepresenthasdeepenedthe                               varieties of

e d u c a t i o n a l and i n t e l l e c t u a le x p e r i e n c e     generally a v a i l a b l e .              It i s n o t

d i f f i c u l t , however, t o c o n s t r u c t a c a r i c a t u r e o f p r e s e n t c o n c e r n s i n

terms of t h e h o r r o r s i t might have been claimed                                would be introduced with




                                                           43
thewidespreaduse                    of books.           It is e a s y t o v i s u a l i z e           a c e r t a i n t y p e of

critic arguing that the highly individualized                                         and e f f e c t i v e q u a l i t i e s

of t h e i n d i v i d u a l t e a c h e r ' s v o i c e c o u l d b e l o s t í n t h e c o m p l e t e l y

standardizeduse                 of t h e w r i t t e n      word and t h e w r i t t e n t e x t .              The

i n d i v i d u a l i z a t i o n of comment, t h e a d a p t a t i o n of comment t o t h e e x p r e s s i o n

of i n d i v i d u a l s t u d e n t s     and t o t h e i r r e s p o n s i v e n e s s        andcomprehension,

would be l o s t i n t h e u s e o f b o o k s i n p l a c e                     of t e a c h e r s .

         NOW w e a l l r e c o g n i z e t h a t t h e r e           i s a t r u t h a t t h e h e a r t of t h i s

caricature,but                 it i s not a truth that argues                          for the abolition or

suppression of books i n e d u c a t i o n ,                       It a r g u e s r a t h e r f o r        a wide v a r i e t y

of educational experiences.

         There i s e v e r y r e a s o n t o b e l i e v e t h a t t h e a p p r o p r i a t e d e v e l o p m e n t
                                                                                                                                       i
of C A I programs w i l l enable u s t o t a k e a h i g h l y s i g n i f i c a n t s t e p                            beyond

t h e i n t r o d u c t i o n of books and t o o f f e r u n p a r a l l e l e d v a r i e t y                  and depth

of c u r r i c u l u m t o s t u d e n t s      of a l l ages,Indeed,theprobleminavoiding

s t a n d a r d i z a t i o n is n o t t h e l i m i t a t i o n s       of thetechnology,butour

ignorance of how t o d i v e r s i f y a p p r o a c h e s t o l e a r n i n g i n m e a n i n g f u l                        and

s i g n i f i c a n t ways,

         The b a s i c s c i e n t i f i c d a t a on t h e s e matters are p i t i f u l l y small,

Opinionscan            b e found i n e v e r y e d u c a t 2 o n a l g r o u p , b u t t h e y                 are o p i n i o n s .

Moreover,from                an o p e r a t i o n a l s t a n d p o i n t í t i s n o t p o s s i b l e t o f i n d

any wide d i v e r s i t y ofapproaches                      t o most of t h e s t a n d a r d s u b j e c t s            in
                         e



thecurriculum.                  D w e want a n a u d i t o r y a p p r o a c h t o t h e l e a r n i n g
                                 o                                                                                       of

language f o r m e s t u d e n t a n d                a visualapproachforanother?                                 Do we want

a politically oriented presentation                                of American h i s t o r y f o r some s t u d e n t s




                                                            44
and a socially oriented presentation for others?o we think that
                                               D

different cognitive styles can be identified sufficiently deep
                                          a in

way to justify     and   guide     the    preparation      of   vastly     different     curricula

in thesame general       subject    matter?

     These   questions     are     not    in   any   way    bound     to     computer    technology.

                                            of curriculum, the
These are fundamental questions about the science

art of teaching, and the philosophy of education that reach out to

very general questionsof social policy, The computer there to
                                                   is

be used in whatever way choose. Uniform standardization of the
                     we

curriculum will be the end product only areso lacking
                                    we if                                      in

imagination as to achieve nothing else.


Complexity of Instruction

     The   third claim often heard is that the limitations of the

technology and the problems that must be overcome in using it will

                                                          be
lead to the development of curricula that will almost necessarily

simpleminded ín character. There are indeed
                                          some unfortunate

historical examples tn'the literature of curriulum efforts,

especially curriculum efforts a technological setting.
                              in

                     of
     In the early days programmed instruction, for example,
                                                         a

number of texts    on    elementary       mathematics      were    written     by

psychologists     or   educators    who    did   not    have      adequate    training    in

mathematics. The programmed texts were splattered with "howlers" that

received the eager attention the mathematics educators charged with
                          of

reviewing thebooks.      Similar kindsof blunders can occur in the case




                                     45
.   -
                                                                                                  'i,




of computer-assisted instruction, but there is nothing special about

computers, and it hard to see that serious argument can be made
                is               a

to claim   that there is any reason why computer-assisted Instruction will

be worse than other
                  forms of curriculum.

      The world    is    full   of   textbooks    that    are    obviously many
                                                                        in bad

respects. Within mathematics, for example, there are elementary books

that are full mathematical
            of                        mistakes;     there      areo elementary
                                                               als

books that are mathematically correct, but pedagogically bad beyond

belief. No doubt programs exhibiting these o extremes will also
                                         tw                   be

written    for    computer-assisted        instruction    in    mathematics,

      There are reasons, however, for thinking the situation will be

more self-corrective in the case CAP than in the case ordinary
                              of                   of

                                                           and
textbook writing. One reason is simply that data can be gathered

authors    can    be    presented    in    tough-minded   fashiona clear
                                                                   with     picture

of the defects of the materials they have written. For example, in
                                                             a

program in elementary mathematics a if
                                     particular                 sequenceof concepts

or problems is missed aby
                        high              percentageof the      students   encountering

it, the transmission this informationto those who wrote the progrzm
                   of

ís   an obvious signal that changes are needed.

                                      of
      Surprising as it may seem, authors textbooks in elementary

mathematics seldom receive such information.They get many good and

penetrating criticisms from teachers and other persons concerned with

curriculum, but they seldom get hard behavioralondata
                                                  individual                      parts

of the text. Similarly, the evaluation that compares given new text
                                                   a

with a standard old text by looking at the achievement data for




                                          46
                                                                                                   r
experimental and control groups                          i s almostalways                f a r too c o a r s e a n

      evaluation to provide any focus for revising                                      the p a r t i c u l a r f e a t u r e s

      of t h e new t e x t .         On t h eo t h e rh a n d ,t h ep r o b l e m s              of g a t h e r i n g d e t a i l e d

      data about an ordinary textbook                          are t o o onerous t o b e f e a s i b l e                 ín

      mos t cases.

 3
i '   Freedom i n Education

              The f o u r t h and f i n a l i s s u e 1 wish t o d i s c u s s is t h e p l a c e                        of

      i n d i v i d u a l i t y and human freedom i n a modern t e c h n o l o g i c a ls o c i e t y .                           The

      c r u d e s t form of opposition to widespread use                                of technology i n e d u c a t i o n

      and i n o t h e r p a r t s      of s o c i e t y is t o c l a i m t h a t           w e face t h e r e a l danger

      of men becoming               s l a v e st o    machines.            This argument i s o r d i n a r i l y made
      i n a romantic and naive fashion by those                                 who seem themselves t o have

      l i t t l e understanding of s c i e n c e o r technology and how i t i s used i n our

      society.         The b l a t a n t n a i v e t 6      of some of t h e s eo b j e c t i o n s             i s well

      illustrated by the story                     of t h e man who was o b j e c t i n g t o a l l forms of

      technology i n our s o c i e t y a n d t h e n i n t e r r u p t e d h i s d i a t r i b e t o                     say t h a t

      he h a s t o r u s h o f € t o telephone about an appointment with                                        his dentist,

              No s c i e n t i f i c a l l y i n f o r m e d p e r s o n s e r i o u s l y b e l i e v e s t h a t       our

      society could survive in anything like                                 i t s p r e s e n t form w i t h o u t t h e

      widespreaduse             o€ technology.                It is ourproblem                  t ou n d e r s t a n d   how t o

      usethetechnology                  and t o b e n e f i t w i s e l y        from t h a tu s e .I n d e e d ,t h e

      claim about: s l a v e r y i s j u s t t h e               o p p o s i t e of t h e t r u e s i t u a t i o n .         It i s

      o n l yi nt h i sc e n t u r yt h a tw i d e s p r e a d           use       of s l a v e r y has beenabolished,

      and i t may b e c l a i m e d b y h i s t o r i a n s             of t h e d i s t a n t f u t u r e       that mankind




                                                                 47
could n o t do w i t h o u t s l a v e r y , b e c a u s e j u s t a s                human s l a v e s are being

abolished, within                a s h o r t time span they                   w i l l be replaced            by machine

s l a v e s whose u s e w i l l n o t v i o l a t e o u r e t h i c a l p r i n c i p l e s                  andmoral

sensibilities           Q




         One can indeedimagine                      a h i s t o r i c a l t e x t of 2500 o r 3000 A . D .

asserting that for                 a short period in the                      l a t t e r p a r t of t h e t w e n t i e t h

c e n t u r y t h e r e was l i t t l e s l a v e r y p r e s e n t           on e a r t h , b u t t h e n      i t was

discovered that machines could be                                made t h a t c o u l d      do a l 1 t h e work of

human slaves, and so i n t h e t w e n t y - f i r s t c e n t u r y t h e l u x u r y o f s l a v e s

and t h e p e r s o r , a l s e r v i c e t h e y a f f o r d e d         was b r o u g h t n o t t o t h e

p r i v i l e g e d few as had h i s t o r i c a l l y b e e n t h e               ease b e f o r e t h e t w e n t i e t h

century, but            as a standard convenience and luxury for                                    a l l people on

earth

         I n our judgment, t h e t h r e a t t o                     human i n d i v i d u a l i t y andfreedom

doesnot         come fromtechnology,but                             Erom a n o t h e r s o u r c e t h a t     was well

described by John S t u a r t Ml i n h i s famous e s s a y O L i b e r t y .
                               i
                               l                             n                                                      He said,

                  The g r e a t e s t d i f f i c u l t y t o b e e n c o u n t e r e d d o e s n o t       lie
                  i n t h e a p p r e c i a t i o n of means towardanacknowledgedend,
                  but in the indifference                      of p e r s o n s i n g e n e r a l t o t h e
                  end i t s e l f . If i t were felt t h a t t h e f r e e                      development
                  o f i n d i v i d u a l i t y i s one of t h e l e a d i n g e s s e n t i a l s o f
                  well-being;that                 i t i s n o t only a co-ordinateelement
                  w i t h a l l t h a t i s designated by t h e ternns c i v i l i z a t i o n ,
                  i n s t r u c t i o n ,e d u c a t i o n ,c u l t u r e ,b u t      is i t s e l f a
                  n e c e s s a r y p a r t and condition of a l l t h o s e t h i n g s ;
                  t h e r e would b e no d a n g e r t h a t l i b e r t y s h o u l d b e u n d e r -
                  valued,andtheadjustment                             of theboundariesbetween
                  i t and s o c i a l c o n t r o l would p r e s e n t n o e x t r a o r d i n a r y
                  difficulty.

         J u s t a s booksEreed                serious students                 from t h e t y r a n n y o f o v e r l y

simple methodsof                 oral recitation,                   s o computerscan             €ree s t u d e n t s from




                                                            48
the drudgery            of d o i n g e x a c t l y similar t a s k s u n a d j u s t e d a n d u n t a i l o r e d

totheirindividualneeds.                          As in the case             of other p a r t s of o u r s o c i e t y ,

our new andwondrous                  technology is t h e r e f o r b e n e f i c i a l use.                  It i s

ourproblem            t o l e a r n how t o use i t well.

         When a c h i l d of s i x b e g i n s t o l e a r n             i n schoolunderthedirection

of a t e a c h e r , h e h a r d l y h a s      a concept of a f r e e i n t e l l i g e n c e a b l e t o

r e a c ho b j e c t i v e   knowledge of the world,                     H e dependsheavily                upon every

word and g e s t u r e of t h e t e a c h e r t o g u i d e h i s               own r e a c t i o n s and

responses.            This i n t e l l e c t u a l weaning of c h i l d r e n i s a complicated

process that w e do n o t yet manage orunderstandvery                                            well,     There a r e

too many a d u l t s among us who a r e n o t a b l e                      t o express their             own f e e l i n g s

o rt or e a c ht h e i r        own independentjudgments.                         W would c l a i m t h a t t h e
                                                                                   e

wise use of technology and s c i e n c e , p a r t i c u l a r l y i n e d u c a t i o n , p r e s e n t s

a majoropportunityandchallenge.                                 W do n o t want t o claim t h a t w e now
                                                                 e

know very much about how t o r e a l i z e t h e f u l l p o t e n t i a l                          of human beings;

b u t w e do n o t d o u b t t h a t         our modern instruments can                         be used t o r e d u c e

thepersonaltyrannyofoneindividualoveranother,andincrease

individual.freedom.


                             I n t e l l e c t u a l Problems of t h e F u t u r e

Computers That Talk

         Let me b r e a k t h i s d i s c u s s i o n o f f u t u r e i n t e l l e c t u a l          problems i n t o

four parts that              w i l l take us back through                  some of t h e earlier technologies,

The f i r s t problem i s s i m p l yt h a t               of t a l k i n g( o r a ls p e e c h ) .        What d o e s - i t

t a k et o     get a computer t o t a l k ?                The f a c t i s t h a t t h e t e c h n i c a l i s s u e s
a




arealreadypretty                  well í n hand.               P e r h a p st h er e a d e rh a ss e e n            on

t e l e v i s i o n "The ForbinProject"--a                       movie about two l a r g e computers í n

the Soviet         Union and t h e U n i t e d S t a t e s g e t t i n g t o g e t h e r                  t o dominate

t h e world.         To t h o s e who haveseenthatmovie,                                l e t m e make a c a s u a l

remark a b o u tt a l k i n g .           A t e c h n i c a lc r i t i c i s mo ft h e            movie i s t h a t t h e

two very l a r g e and s o p h i s t i c a t e d c o m p u t e r s were conducting only                                  one

conversation a t a time.                      Already i n ourcomputersystem                               a t Stanford,

w e have eighteen channels                      of independent simultaneous talk                                 and t h e

computer t a l k s i n d e p e n d e n t l y          and d i f f e r e n t l y t o e i g h t e e n s t u d e n t s          at

t h e same time.             So you see, we h a v e t h e c a p a c i t y f o r                     t h e computer t o

talk.       What w e need,
                         however,                       is b e t t e ri n f o r m a t i o na b o u t            what i s t o

be s a i d .      For exrmple, when L serve as a t u t o r ,t e a c h i n go n e                                   of you,

o r even when one of you is teaching me, intuitively and n a t u r a l l y w e

follow cues and say things to each other without having an explicit

theory of how w e saywhat                       w e say.         W speak as p a r t of our humanness,
                                                                  e

i n s t i n c t i v e l y , on t h e b a s i s      of o u r p a s t experience.                    But t o satis-

factorily talk with                 a computer,weneedan                        explicít theory                  of talking.


Computers That L i s t e n

        The r e p l a c e m e n t o f t h e w r i t t e n r e c o r d , t h e k i n d o f r e c o r d t h a t

was o b j e c t e d t o i n P l a t o ' s P h a e d r u s , c a n b e a v a i l a b l e               t o us i n t h e

talkingcomputer.                  The o t h e r side of t h a t c o i n                 which S o c r a t e s a l s o

emphasized, or
             shouldhaveemphasized,
                                 concerns                                                 listening.              It i s a

much more d i f f i c u l t t e c h n i c a l problem,                     The problem of d e s i g n i n g a

computer t h a t c a n l i s t e n            to a student talk                  i s much h a r d e r t h a n         havi-ng
a student listen to the computer talk. However, the problem
                                                         is

solvable.


The Use of Knowledge

    To have     an effective computer-based systeminstruction,
                                               of                               we

must transcend mindless talking and listening and learn to understand

and use a large knowledge base.For example, ifwe were simply to

require     information   retrieval    from     a     knowledge    base,   it   would   be

relatively simple in the near future to put the entire American

Library of Congress in every elementary school, The capacity to store

                        so
information is increasing rapidly thatwe                 willbe able to store

much more information than could ever possibly be used.

    A different     and   more   difficult           ris how to get the student
                                                question

                                         A s we come to understand
to interact with the sizable knowledge base,

how to handle such a knowledge base, the school of the future
                                                computer

should be able to answer any wayward question that the student might

                               know, once a student uses such a
like to ask. Moreover, as we all

capability, he will have a strong tendency to pursue still further

questions that are more difficult and more idiosyncratic. will, I
                                                       It

think, be wonderful to see how children interact with such a system;

in all likelihood,
                 we       will   see       children    give   to   learning     the   high   degree

                                    of
of concentration and the sustained span attention they now give
                                                             to

commercial television.

     There is one related point want to emphasize. From the very
                             I

beginning of school, students learn quickly the of the land" and
                                                "law




                                      51
know theyshouldnotaskquestionstheteachercannotanswer.This

t a s k of d i a g n o s i n g t h e l i m i t a t i o n s        of t e a c h e r s b e g i n s e a r l y    and

continuesthroughcollegeandgraduateschool.                                                So, once w e h a v et h e

capacíty f o r answeringout-of-the-way                                 q u e s t i o n s , i t w i l l bemarvelous

t o see how s t u d e n t s w i l l take advantage                        of t h e o p p o r t u n l t y     and t e s t

t h e i r own c a p a c i t i e s w i t h a r e l e n t l e s s n e s s t h e y d a r e n o t e x h i b i t              now.


Need f o r Theories of L e a r n i n g a n d I n s t r u c t i o n

         The fourthproblem,and                         i n many ways t h e l e a s t - d e v e l o p e d f e a t u r e

of t h i s t e c h n o l o g y ,      i s t h e development of anadequatetheory                                of

l e a r n i n g and i n s t r u c t i o n ,          W can make t h e computer t a l k , l i s t e n ,
                                                      e                                                                   and

adequately handle                  a l a r g e knowledge d a t a b a s e , b u t                w e s t i l l need t o

develop
      an             e x p l i c i tt h e o r y       of l e a r n i n g and i n s t r u c t i o n .I nt e a c h i n g

a student, young o r o l d , a g i v e n s u b j e c t m a t t e r                        o r a givenskill,                a

computer-based learning system can keep                                   a record of e v e r y t h i n g t h e

studentdoes.                Such a systemcangatheran                            enormous
                                                                                       amount                o€

i n f o r m a t i o na b o u tt h es t u d e n t .          The problem í s how t o u s e t h i s

ínformationwisely,skillfully,ande€ficientlytoteachthestudent.
                                                                                                                                i
This i s something t h a t t h e v e r y b e s t                     human t u t o r d o e s        w e l l , even though

he does not understand                     a t a l l how hedoes               i t , j u s t as h e d o e s n o t

understand how h e t a l k s .                     None of u s understands how w e t a l k andnone

of u s understands how w e i n t u i t i v e l y i n t e r a c t w i t h                        someone we are

teaching        OR    a one-to-one                basis.      S t i l l , eventhoughourpastandpresent

t h e o r i e s of i n s t r u c t i o n h a v e n o t        c u t very deep,           í t does n o t mean t h a t

we havenot            made
                         some            progress.First,                  w e a t l e a s t r e c o g n i z et h a t
                                                                                            -




                                                            52
t h e r e i s a s c i e n t i f i c problem; t h a t a l o n e              i s progress.            One hundred

f i f t y y e a r s ago t h e r e w a s no e x p l i c i t r e c o g n i t i o n t h a t t h e r e            was even

a problem.
         There                     i s not s t a t e d i n t h e e d u c a t i o n l i t e r a t u r e      of 150

y e a r s ago any view t h a t i t i s i m p o r t a n t t o u n d e r s t a n d i n d e t a i l t h e

process of l e a r n i n g on the p a r t of t h e s t u d e n t .                      Only i n t h e t w e n t i e t h

century do w e f i n d any s y s t e m a t i c d a t a o r a n y S y s t e m a t i c t h e o r e t i c a l

i d e a sa b o u tt h ed a t a .           What p r e c e d e s t h i s p e r i o d     i s romance
                                                                                                  and

f a n t a s y u n s u b s t a n t i a t e d by any s o p h i s t i c a t e d r e l a t i o n t o e v i d e n c e .

So a t l e a s t w e c a n s a y t h a t            w e have begun t h e t a s k .


                           Alternative Educational Structures

         L e t m g i v e some examplesofchanges
                e                                                           we can effect in the

s t r u c t u r e of e d u c a t i o n a l i n s t i t u t i o n s by u s i n g a p p r o p r i a t e l y t h e      new

technologyofcomputersandtelevision.Because                                               of m own s p e c i a l
                                                                                             y

interest in computers,I shall concentrate                                   on computer p o s s i b i l i t i e s ;

but i t s h o u l d b e u n d e r s t a o o d t h a t t e l e v i s i o n        would a l s o be a component

fortheproposedchangesinstructure.


High Schools

        M f i r s t exampleconcernstheorganization
         y                                                                             of h i g hs c h o o l s .       An

American phenomenon,much d i s c u s s e d i n t h e h i s t o r y o f e d u c a t i o n i n t h e

twentiethcentury,hasbeentheintroduction                                         of t h e c o n s o l i d a t e d h í g h

schoolthatbringstogetherstudentsfromsmallschoolsto                                                         a centrally

located large school that offers                             a v a r i e t y of e d u c a t i o n a l o p p o r t u n i t i e s

and r e s o u r c e st ot h es t u d e n t s .             The American c o n s o l i d a t e d h i g h schools i s

oneoftheglories                     of t h e h i s t o r y      of education.            Today,
                                                                                              however,                many




                                                           53
of us €eel t h a t t h e l a r g e h i g h s c h o o l h a s                   become oneof             t h e most

d - i f f i c y l ti n s t i t u t i o n s   t o d e a lw i t h     from a s o c i a l s t a n d p o i n t .         The mass

aggregation of a d o l e s c e n t s i n o n e s p o t                   creates an environment that                          is

on the onehandimpersonal,and                                 on t h e o t h e r p o t e n t i a l l y e x p l o s i v e ,

partlybecause                 of t h e l a r g e numbers of s t u d e n t s and s u p e r v i s i n g a d u l t s

in close quarters.

          The use of our new technology w i l l make p o s s i b l e a n a l t e r n a t i v e

s t r u c t u r et h a t      will r e t u r n u s       t o t h e small s c h o o l s of t h e p a s t .                   The

ideal high school                   of. t h e f u t u r e may c o n s i s t of no more than a hundred

s t u d e n t sa n d ,i n         many c a s e s , b e l o c a t e d c l o s e t o s t u d e n t s '          homes; i t

=ay b e a s p e c i a l i z e d s c h o o l , c a t e r i n g t o s t u d e n t s ' p a r t i c u l a r

interests.              The v a r i e t y of curriculumandothereducationalresources,

such as l i b r a r i e s , t h a t h a s b e e n             s o ímportant a f e a t u r e of t h e

consolidated high school,                         w i l l be made a v a i l a b l e by computerand

t e l e v i s i o nt e c h n o l o g y .      I shouldsay             i n t h i sc o n n e c t í o nt h a tt h e

changes that can be broupjhtabout through the use of computers                                                     are more

d r a s t i c and more r a d i c a l t h a n t h o s e t h a t c a n b e e f f e c t e d o n l y t h r o u g h

television.               The d i f f e r e n c e i s t h e p o s s i b i l i t y       of a high level of

i n t e r a c t i o n 'between t h e cornputerprogram                        and t h e s t u d e n t , t h e s o r t         of

thing that            is not possible with                   a standard television lecture or

laboratory demonstration.


ElementarySchools

         M second
          y      exampleconcerns                             a l t e r n a t i v e s t o elementaryschools.

Through most of t h e h i s t o r y of c i v i l i z a t i o n , young c h i l d r e n h a v e been




                                                            54
taughtprimarily                  a t home, o f t e n p e r h a p s i n           an extended family group.

    W now h a v e t h e t e c h n i c a l p o s s i b i l i t y
     e                                                                       of r e t u r n i n g t h e s t u d e n t     to

    the home o r t o a small neighborhood group.                                       Althoughthese

    alternativeshave                   not y e t b e e n t h o r o u g h l y e x p l o r e d ,        it is important

    t h a t d i s c u s s i o n of t h e i r a v a i l a b i l i t y b e g i n         as e a r l y as p o s s i b l e .

    A s f a r as I know, t h e new r o m a n t i c s í n e d u c a t i o n h a v e n o t d i s c u s s e d

    the radical possibility                       of d i s s o l v í r g e l e m e n t a r y s c h o o l s e n t i r e l y        and

    returningthechildtothe                             home--or            t o a neighborhoodgroup                  of t h r e e

    o r f o u r homes--for               his education.

             In describing this possibility,                               l e t m e emphasizethat                 1 a not
                                                                                                                     m

    m a i n t a i n i n gt h a t     i t is n e c e s s a r i l y a wise move,                    1 do,however,think

    i t i m p o r t a n tt h a tt h i st e c h n i c a lp o s s i b i l i t y            i s now a v a i l a b l e .         At

    t h ev e r y       l e a s t , i t s h o u l db ee x p l o r e de x p e r i m e n t a l l y .          By p r o p e r use

    of c o m p u t e r t e c h n o l o g y , t h e b a s i c s k i l l s          of reading,mathematics,and

    language arts can e a s i l y b e b r o u g h t t o t h e s t u d e n t i n t h e                           home o r i n

    a c l u s t e r of homes.               Most of t h ee l e m e n t a r ys c i e n c ec u r r i c u l u ma l s o

    can be handled by c o m p u t e r .O t h e rp a r t s                         of t h e e l e m e n t a r y s c i e n c e

    curriculum, of t h e s o c i a l s t u d i e s                   program,and            much of t h e work i n

    a r t and m u s i cc o u l db eh a n d l e db yt e l e v i s i o n .                     I envisage a s i t u a t i o n

    i n which a master t e a c h e r would d i v i d e h i s time among several u n i t s .

    The mothers of t h e c h i l d r e n                 wouldassume              responsibilities for super-

    v i s i o na n d      some would work as t e a c h e r s 'a i d e s .                        Such anapproach

    would b e c o m p l e t e l y n a t u r a l , b e c a u s e            of t h e p r o x i m i t y    of t h e s c h o o l

    t o t h e i r homes.             I n many u r b a n s e t t i n g s ,         €or example, i t would be

    n a t u r a lt op l a c e        classrooms i na p a r t m e n tc o m p l e x e s .I no t h e rd i s t r i c t s ,




                                                                55
I
a small one-room b u i l d i n g c o u l d                    b e added, or            it might even be feastble

t o pay a small r e n t t o one of t h e f a m i l i e s f o r t h e u s e o f s p a c e                                  in a

home.        The main t h i n g t o a v o i d                i s h e a v yc a p i t a le x p e n d i t u r ef o rp h y s i c a l

p l a n t s ; w e have had too               much of t h i s i n t h e p a s t .


Higher Education

         The t h i r d a l t e r n a t i v e s t r u c t u r e d e a l s w i t h h i g h e r e d u c a t i o n .                Here

the possibilities                 are p e r h a p s t h e           easiest t o implementand                     may b e

r e a l i z e ds o o n e rt h a nt h eo t h e r s .                 In t h e areas s u r r o u n d i n gS t a n f o r d ,

several community c o l l e g e s are a l r e a d y o f f e r i n g c o u r s e s                          f o r c r e d i t by

television.             A s w e face t h e c o s t s t h r o u g h o u t t h e                world of p r o v i d i n g

highereducationforincreasingnumbers,theuseofcomputersand

televisiontoreducecosts                               and t o d e c e n t r a l i z e t h e e d u c a t i o n a l e f f o r t

seems almost i n e v i t a b l e .               One can see t e r m i n a l sa v a i l a b l eí na p a r t m e n t

complexes f o rs t u d e n t s              a t t h e community-col2.ege                     level.        A t a later

stage,onecanenvisageterminsls                                       i n plantswhereemployees                       work f u l l -

time, b u ta l s oa c t i v e l yp u r s u et h e i re d u c a t i o n .                       I s h o u l dm e n t i o nt h a t

in C a l i f o r n i a , for example, a r e a s o n a b l e p e r c e n t a g e                     of s t u d e n t s i n t h e

state h i g h e r e d u c a t i o n a l s y s t e m            are employed f u l l - t i m e , s i m u l t a n e o u s l y

w i t ht h e i re m o l l m e n t         as s t u d e n t s .         The developmentofsuch                       a delivery

system for higher education                            w i l l also n a t u r a l l y a n s w e r demands f o r

c o n t i n u i n ge d u c a t i o nf o ra d u l t s .              A t a more d i s t a n t d a t e , o n e           can

expecttheterminalresourcesdescribed                                           earlier t o b e a v a i l a b l e i n t h e

home f o r t h e t e a c h i n g          of a w i d e r a n g e o f s u b j e c t s , f r o m f o r e i g n

languages t o a d v a n c e d t e c h n i c a l c o u r s e s i n s c i e n c e a n d m a t h e m a t i c s .




                                                               56
I emphasize,however,                      thattheproblems               of i n s t i t u t i o n a l change

             of t h e s o r t j u s t d i s c u s s e d         are poorlyunderstood.There                           i s evidence

             that universities,                 for example, are among t h e mostConservative

             i n s t i t u t i o n si no u rs o c i e t y .         I n any case, t h e r a p i d           development of

             alternatfve structures for education                               will b e n e i t h e r s i m p l e nor easy.

             O t h e o t h e r hand, t h e w i l l i n g n e s s of community c o l l e g e s , which do
              n
     i


             n o t have a l o n g t r a d i t i o n , t o c o n s i d e r           new methodsof            instruction
i
!
r;
             and new approaches i s encouraging,There                                     are problems of p r e j u d i c e
     3

             and entrenchment, but there                         are a l s o i n t e l l e c t u a l problemsofunder-

             s t a n d i n gt h ek i n d s      of o r g a n i z a t i o n w e want f o r t h e f u t u r e .            The

             technology affords                 many p o s s i b i l i t i e s , b u t     we have not thought

             through which of these possibilities                               we c o n s i d e r t h e mostadvantageous,

             t h e most i n t e r e s t i n g , o r t h e most e x c i t i n g .

                      The c e n t r a l i d e a       I havebeenstressing                    í s thatthroughcomputers

             we have t h e means t o d e v e l o p a l t e r n a t i v e s t r u c t u r e s t h a t             will

             effectivelydecentralizethepresenteducationalsystem.                                                     - T h e i s s u e of
i

             d e c e n t r a l i z a t i o n of s e r v i c e s , of places of             work, ofalmost               a l l aspects

         I
             of our l i f e i s g r a d u a l l y coming t o t h e f o r e as a c e n t r a l s o c i a l and

             p o l i t i c a l problemof            t h e l a s t p a r t of t h et w e n t i e t hc e n t u r y .          The

             issues involved in decentralizing education                                     w i l l be among t h e most

             s i g n i f i c a n to ft h e s ep r o b l e m s       of d e c e n t r a l i z a t i o n ,   The problems t h a t

             f a c e us are n o t r e a l l y t e c h n o l o g i c a l : t h e y            are conceptual,

             i n s t i t u t i o n a l , and s o c i a l .       I h a v ec e r t a i n l yn o t      made anyconcrete

             suggestionsfortacklingtheseproblems;                                        a t most, I h a v e t r i e d t o

             b r i n g them t o y o u r a t t e n t i o n .

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Historical devt of ed tech

  • 1. HISTORICAL PERSPECTIVE ON EDUCATIONAL TECHNOLOGY P a t r i c k Suppes Lucie Stern Professor of Philosophy Stanford University A a comment on t h e p a p e r s by D r . A l i o t o and M s . "hornton, I would : like to try to putthecurrenteffortsineducationaltechnologyin historical perspective, From t h i s p e r s p e c t i v e I move t o t h e p r e s e n t , i" with some r e m a r k s a b o u t t h e e x t e n s i v e e f f o r t s i n San F r a n c i s c o , and on t o some p r e d i c t i o n s a b o u t t h e f u t u r e . Past EducationalTechnologies I can i d e n t i f y a t l e a s t f i v e major t e c h n o l o g i c a l i n n o v a t i o n s in the p a s t t h a t are comparable t o t h e c u r r e n t c o m p u t e r r e v o l u t i o n . f Written Records The f i r s t i s t h e i n t r o d u c t i o n of w r i t t e n r e c o r d s f o r teacI1ing purposes i n a n c i e n t times. W do n o t know e x a c t l y when t h e u s e e of writtenrecords f o r instructionalpurposesbeganbut w e do have, as early as Plato's Dialogues, wrritten i n t h e f i f t h c e n t u r y B.C., sophisticated L objections to the use of w r i t t e n r e c o r d s . Today noone would d o u b t t h e v a l u e of w r i t t e n m a t e r i a l i n e d u c a t i o n , but there were v e r y s t r o n g and c o g e n t o b j e c t i o n s t o t h i s v e r y earliest innovation $ 2 e d u c a t i o n , 1 The o b j e c t i o n s were t h e s e : a w r i t t e nr e c o r d is very impersonal; i t i s very uniform; í t does n o t a d a p t t o t h e i n d i v i d u a l t i s t u d e n t ; i t d o e sn o te s t a b l i s hr a p p o r tw i t ht h es t u d e n t . I n o t h e r words, F 30 s'
  • 2. Socrates and t h e a n c i e n t S o p h i s t s , t h e t u t o r s ofstudentsinancient Athens,objected t o introducingwrittenrecords and d e s t r o y i n g t h e k i n d ofpersonalrelationbetweenstudent and t u t o r t h a t was a p a r t of t h e i r main r e a s o n f o r b e i n g . It has become a f a m i l i a r s t o r y i n o u r own time t h a t a t e c h n o l o g i c a l innovation has side effects that are n o t a l w a y s u n i f o r m l y b e n e f i c i a l . It i s i m p o r t a n t t o r e c o g n i z e t h a t t h i s i s n o t a new a s p e c t of innovation b u t h a s been with us from the beginning. Libraries The secondinnovation was the founding of l i b r a r i e s i n t h e a n c i e n t world,the most important example b e i n g t h e famous Alexandrian Library t h a t was establishedaround 300 B.C. Because of c e r t a i nd e m o c r a t i c traditions,thepreeminence of t h e c r e a t i v e work i n p h i l o s o p h y and p o e t r y , i t i s e a s yt ot h i n k of Athens as t h e i n t e l l e c t u a l c e n t e r ofthe H e l l e n i cw o r l d .I nf a c t ,t h a tc e n t e r was r e a l l yA l e x a n d r i a . From about 250 B.C. t o A.D. 4 0 0 , n o to n l y was A l e x a n d r i a t h e mostimportantcenter of mathematicsandastronomy in the ancient world--it was a l s o a major c e n t e r of l i t e r a t u r e , e s p e c i a l l y b e c a u s e of t h e c o l l e c t i o n i n t h e AlexandrianLibrary. The f i r s t r e a l beginnings of c r i t i c a l s c h o l a r s h i p inthewesternworld in literature, the editing of t e x t s , t h e a n a l y s i s of s t y l e , t h e d r a w i n g up of b i b l i o g r a p h i e s , t o o k p l a c e i n t h e A l e x a n d r i a n L i b r a r y .T h i sr e v o l u t i o ni ne d u c a t i o nc o n s i s t e dn o ts i m p l yo fh a v i n gi n one p l a c e a l a r g e number of p a p y r u s m a n u s c r i p t s b u t i n t h e o r g a n i z a t i o n of l a r g eb o d i e so fl e a r n i n g ,S c h o l a r s from a l l overthewesternworld 31
  • 3. came t o A l e x a n d r i a t o s t u d y and t o t a l k t o o t h e r s , Libraries of a s u b s t a n t i a l n a t u r e were t o b e found i n o t h e r major c i t i e s of t h e a n c i e n t w o r l d , n o t t o mention the large collections of l e a r n i n gi nC h i n a ,I n d i a , andKorea. Printing The t h i r d i n n o v a t i o n of g r e a t h i s t o r i c a l i m p o r t a n c e i n e d u c a t i o n was t h e move f r o m w r i t t e n r e c o r d s t o p r i n t e d books, I n t h e western world we i d e n t i f y the b e g i n n i n g d a t e of t h i s J n n o v a t i o n w i t h t h e i p r i n t i n g of t h eG u t e n b e r gB i b l ei n 1452. It í s i m p o r t a n tt or e c o g n i z e , i l however, t h a t t h e r e was e x t e n s i v e u s e of b l o c k p r i n t i n g i n Koreaand China three o r four hundredyears earlier. Nearly h a l f a millennium later í t i s d i f f i c u l t t o have a v i v i d s e n s e of how i m p o r t a n t t h e innovation of p r i n t i n gt u r n e do u tt ob e ,I nt h ea n c i e n tw o r l d of t h e Mediterranean there were only a few m a j o r l i b r a r i e s , a number so small thattheycouldbecounted on t h e f i n g e r s o f onehand. One of t h e famous a s p e c t s of Alexandria,forexample, was thewealth and magnitude of i t s l i b r a r y , and the Alexandrian Library of 100 B,C. had f e w competitors. The reason í s obvious: it w a s i m p o s s i b l et oh a v e l a r g e numbers of c o p i e s of manuscripts reproduced when a l l copying had t o b e done t e d i o u s l y by hand, The i n t r o d u c t i o n of p r i n t i n g i n the fifteenth century produced a radical innovation--indeed a revolution-- i n t h e d i s t r i b u t i o n of i n t e l l e c t u a l and e d u c a t i o n a l materials. By t h e middle of the sixteenth century not only European institutions but wealthyfamilies as w e l l had l i b r a r i e s of s e r i o u s p r o p o r t i o n s . 32
  • 4. Once again, however, there were d e f i n i t e t e c h n o l o g i c a l side e f f e c t s t h a t were not u n i f o r m l y b e n e f i c i a l . Those who know t h e a r t and t h e beauty of t h e m e d i e v a l m a n u s c r i p t s t h a t p r e c e d e d t h e i n t r o d u c t i o n of printing can appreciate that mass p r i n t i n g was regarded by soma a s a degradation of the s t a t e of reproduction. It is a l s o i m p o r t a n t t o h a v e a sense of how slow the impact of a t e c h n o l o g i c a lí n n o v a t l o nc a n sometimesbe. It was n o t u n t i l t h e end of t h e e i g h t e e n t h c e n t u r y t h a t books were u s e d e x t e n s i v e l y f o r t e a c h i n g i ns c h o o l s .I na r i t h m e t i c ,f o re x a m p l e , most t e a c h e r sc o n t i n u e dt o u s e o r a l methods throughout the nineteenth century and i t was n o t u n t i l almost the beginning of t h e present century that appropriate elementarytextbooks i n mathematicswereavailable, It i s c e r t a i n l y m hope t h a t i t w i l l . not r e q u i r e 500 years t o d i s t r i b u t e computers y i n t o s c h o o l s , a figure comparable to what it took to d i s t r i b u t e a r i t h m e t i c textbooks i n t os c h o o l s .F o r t u n a t e l y , t h es c a l e of dissemination in the modern world is ofan entirely different order from what i t was i n t h e p a s t . P e r h a p s m f a v o r i t e example i s t h e y estimate that i t tookoverfiveyears f o r t h e news of J u l i u s C a e s a r ' s a s s a s s i n a t i o nt or e a c ht h ef u r t h e s tc o r n e r s of t h e Roman Empire, Today such an assassination would be known throughout the world i n a matter of minutes. With r e g a r d t o t h e p a c e a t whichbookshavebeenintroduced into education, i t would be a m i s t a k e t o t h i n k t h a t t h e r e was something peculiarabouttheuse of methods of r e c i t a t i o n i n t h e e l e m e n t a r y s c h o o l u n t i l Zate i n t h e n i n e t e e n t h c e n t u r y ; s t o r i e s of a comparable s o r t a l s o 33
  • 5. p F hold a t t h e u n i v e r s i t y l e v e l . According t o a t least oneaccount,the last professor at the University of Cambridge i n England who i n s i s t e d on f o l l o w i n g t h e r e c i t a t i v e t r a d i t i o n t h a t d a t e s b a c k t o t h e Middle Ages was C . D. Broad. A s l a t e as t h e 1 9 4 0 ' s h e d i c t a t e d andthen repeatedeachsentencesothatstudents would have adequate time t o write e a c hs e n t e n c ee x a c t l y as d i c t a t e d . I cannotimaginecontemporary university students tolerating such methods, Mass Schooling The f o u r t h i n n o v a t i o n , and a g a i n o n e t h a t w e now a c c e p t as a completeand n a t u r a lp a r t of o u r s o c i e t y , i s mass schooling. W have e a tendency i n t a l k i n g a b o u t o u r s o c i e t y t o p u t s c h o o l s and f a m i l i e s i n t ot h e same category of m a j o r i n s t i t u t i o n s . But i t i s extremely important t o r e c o g n i z e t h e g r e a t p s y c h o l o g i c a l d i f f e r e n c e b e t w e e n t h e s t a t u s of t h ef a m i l y and t h e s t a t u s of schools.Families are r e a l l y deep intoourblood and o u r c u l t u r e . The evidence of f a m i l i e s i n one form o r a n o t h e r b e i n g t h e most i m p o r t a n t c u l t u r a l u n i t goes back thousands of years.Schools are n o t a t a l l comparable;they are, we mightsay,very much Johnny-come-lately t o o u rc u l t u r e . A hundred , t t . years ago i n 1870, f o r example,only two p e r c e n t OE young people graduatedfromhighschool í n the U n i t e d S t a t e s . A h u n d r e dy e a r sb e f o r e that only a v e r y small p e r c e n t a g e e v e n f i n i s h e d t h i r d o r f o u r t h g r a d e . I cannot give youan exact percentage because our record-keeping, that ris, o u r s o c i a l s t a t i s t i c s , are n o t much more than a h u n d r e d y e a r s o l d and we have no s e r i o u s i d e a of howmany s t u d e n t s were a c t u a l l y i n s c h o o l 34
  • 6. two hundred y e a r s a g o , e x c e p t t h a t we do know t h a t t h e number was q u i t e small. Even as s h o r t a p e r i o d as f i f t y y e a r s ago, i n most of the world less than one percent of the population completed secondary school. During t h e r e c e n t u p h e a v a l s c o n n e c t e d w i t h t h e " c u l t u r a l r e v o l u t i o n " i n China t h e e l e m e n t a r y s c h o o l s , n o t t o s p e a k of c o l l e g e s andsecondary schools, were c l o s e d f o r several y e a r s . I n o u r s o c i e t y as w e now t h i n k of i t , i t i s u n b e l i e v a b l e t o c o n t e m p l a t e c l o s i n g t h e e l e m e n t a r y s c h o o l s f o r such a p e r i o d of time. From a C h i n e s e h i s t o r i c a l p e r s p e c t i v e , how- e v e r , i t w a s notsuch an important matter, f o r Chinesecultureextends back continuously several thousand years and t h e r e i s i n t h a t c u l t u r a l t r a d i t i o n no s a l i e n t p l a c e f o r mass schooling. I n many d e v e l o p i n g c o u n t r i e s of t h e w o r l d t o d a y t h e b e s t t h a t c a n be hoped i s t h a t t h e m a j o r i t y of t h e young people w i l l be given four grades of elementaryschool.Untilthepopulatíongrowth i s brought i n check, i t w i g 1 t a k e all a v a i l a b l e r e s o u r c e s t o achievethis much. The p o s i t i o n of America as a w o r l d l e a d e r i n e d u c a t i o n i s sometimes n o t adequately recognized by m fellow Americans, because y w e a c c e p t as so much a p a r t of o u r c u l t u r e t h e c o n c e p t of al1 young peoplecompleting secondaryschool and a highpercentagegoing on t o c o l l e g e . In f a c t , our leadership in creating a s o c i e t y w i t h mass education i s perhapsone of t h e most i m p o r t a n t a s p e c t s of American i n f l u e n c e i n t h e w o r l d . A s r e c e n t l y as t h e l a t t e r p a r t o f t h e n i n e t e e n t h c e n t u r y t h e British hilosopher, ohn tuart p J S M i l l , d e s p a i r e d of democracy ever r e a l l y workinganywhere i n t h e world f o r onereason--it was simply not 35
  • 7. . b i . p o s s i b l et oe d u c a t et h em a j o r i t y of t h e p o p u l a t i o n . I n h i s view i t was notpossibletohave a significant percentage of t h e p o p u l a t i o n a b l e tQ read and t o b e i n f o r m e d a b o u t p o l i t i c a l e v e n t s . A s i n t h e case of many s u c hp r e d i c t i o n s ,h e was very much i n e r r o r . The r e v o l u t i o n i n mass schooling i s one of t h e most s t r i k i n g phenomena of t h e t w e n t i e t h c e n t u r y . Testing The f i f t h e d u c a t i o n a l i n n o v a t i o n i s t e s t i n g , which i s i n many ways o l d e rt h a nt h ec o n c e p t of mass schooling. The g r e a t t r a d i t i o n of t e s t i n g was f i r s t e s t a b l i s h e d , i n China; t e s t i n g t h e r e began i n t h e f i f t h c e n t u r y A . D . and became f i r m l ye n t r e n c h e d by t h et w e l f t hc e n t u r y A.D. There i s a continuoushistory from t h e t w e l f t h c e n t u r y t o t h e end of t h e n i n e t e e n t h centuryintheuseof tests f o r t h e s e l e c t i o n of mandarins--the civil # s e r v a n t s who r a nt h ei m p e r i a l government o f China. The c i v i l service positions held bymandarins were regarded as t h e e l i t e s o c i a l p o s i t i o n s in the society. The importance of t h e s e tests i n C h i n e s e s o c i e t y í s w e l l a t t e s t e d t o by t h el i t e r a t u r e of v a r i o u sp e r i o d s . I f 0n.e examines, f o r example, t h e l i t e r a t u r e of t h e f i f t e e n t h o r s i x t e e n t h c e n t u r y , o n e i s impressed by theconcernexpressed f o r performance on tests. A v a r i e t y of l i t e r a r y tales focused on t h e q u e s t i o n of whether sons would s u c c e s s f u l l y c o m p l e t e t h e tests andwhat this would mean f o r t h e f a m i l y , (As youmightexpect, in those days women had no p l a c e i n t h e management o f t h e s o c i e t y and no place as a p p l i c a n t s f o r civil s e r v i c e p o s i t i o n s , ) The procedures of s e l e c t i o n were as r i g o r o u s as t h o s e f o u n d i n a contemporarymedical 36
  • 8. s c h o o lo r a g r a d u a t es c h o o l of b u s i n e s s i n t h e U n i t e d S t a t e s . In many p e r i o d s fewer than two p e r c e n t of t h o s e who began the tests (whichwere arrangedin a complicatedhierarchy)successfullycompletedthesequence and were put on t h e l i s t of e l i g i b l e mandarins. Although t e s t i n g h a s a h i s t o r y t h a t g o e s b a c k h u n d r e d s of y e a r s , i n many ways i t i s p r o p e r t o r e g a r d t e s t i n g as a twentieth-century innovation because it was o n l y i n t h i s c e n t u r y t h a t t h e s c i e n t i f i c and t e c h n i c a ls t u d y of tests began. It is o n l y i n t h i s c e n t u r y t h a t t h e r e hasbeen a serious effort to understand and t o d e f i n e what c o n s t i t u t e s a good t e s t f o r a g i v e n a p t i t u d e , a givenachievement,or a given skill. Moreover, t h i s i n t e n s i v e s t u d y of t e s t i n g from a t e c h n i c a l s t a n d p o i n t was p r i m a r i l y a focus of American research by such e d u c a t i o n a l psychologists a s Edward L. Thorndike. The t r a d i t i o nt h a t Thorndike beganhas become a majorone i n our society and i s a source of c o n t i n u a l controversy n i terms of i s s u e s of f a i r n e s s and o b j e c t i v i t y .C e r t a i n l y currerLt s p e c u l a t i o n s a s t o t h e r e a s o n s f o r t h e d e c l i n e i n theverbal and mathematical scores on t h e S c h o l a s t i c A p t i t u d e Tests provide an e x c e l l e n t exampleof the kind of d e t a i l e d s c r u t i n y w e g i v e o u r tests t h a t is completelyuncharacteristic of any t r a d i t i o n o f t e s t i n g , whether i n China,Europe ortheUnited States p r i o r t o t h i s c e n t u r y . The f i v e i n n o v a t i o n s t h a t I havediscussed--writtenrecords, libraries,printedbooks,schools, and tests--are t h e v e r y f a b r i c ofour educationalsystemtoday. It i s almostunthinkabletocontemplate a modern educational system without each of these innovations playing an important part. 37
  • 9. O f these five technologies, nonehadbeen i n any way adequately E o r e c a s to ro u t l i n e d a t t h e time i t was introduced, O f course, a f e w individuals foresaw the consequences andhadsomething to say about those c o n s e q u e n c e s , b u t c e r t a i n l y t h e d e t a i l s of t h e u s e of any of these f i v e technologies had not been adequately foreseen, l a m certain t h a t t h e same t h i n g will be t r u e of technologies now developing €or use í n t h e f u t u r e , and s o I do n o t want t o a p p e a r c o n f i d e n t t h a t what I s a y i s a c o r r e c t s c e n a r i o f o r t h e f u t u r e . But I want t o s a y somethingabout each of t h e f i v e . F i r s t , I havementioned, and I want t o re-emphasize, the very recent and h i s t o r i c a l l y v e r y t r a n s i e n t characterofschools. It i s a phenomenon i n a g e n e r a ls e n s eo ft h e l a s t hundred y e a r s i n t h e mostdeveloped p a r t s of t h e w o r l d , and a phenomenon of the l a s t t h i r t y y e a r s o r s o ( t h a t i s , s i n c e World W r 1 ) a 1 i n t h e underdeveloped p a r t s sf t h e w o r l d . Now, anTmportantquestion f o rt h ef u t u r e is t h i s : I n f i f t y o r onehundred years, w i l l w e a b o l i s h schools? Will we d e l i v e r i n t o t h e home, o r i n t o small neighborhood u n i t s , by t e c h n o l o g i c a l means a l l c u r r i c u l u ma n di n s t r u c t i o n ?F u r t h e r , w i l l thedesiresorgoals of t h e i n d i v i d u a l , t h e f a m i l y , t h e p a r e n t s , or the neighborhood group be such that children will n o t b e í n s c h o o l , but a t home o r i n t h e neighborhood? The answers t o t h e s e q u e s t i o n s are not e a s y t o p r e d i c t o r t o f o r e s e e . The same k i n d of f o r e c a s t may b e made f o r books. The importance ' of books t h a t we have f e l t f o r several hundred y e a r s , since the beginning of the Renaissance, and t h a t h a s b e e n a s s o c i a t e d with t h e developmept and education of a ni n f o r m e dc i t i z e n r y , may f a d e away. I 38
  • 10. thinkthat all of us, a t l e a s t t h o s e of m age,haveseen y t h i s already i nt h ec a s eo f young s t u d e n t s . Some r e c e n t s t u d i e s h a v e i n d i c a t e d t h a t the cultural reference points of t h e younger generation are no longer I , t ' ' t o befound i n books, o r i n c u r r e n t n o v e l s , b u t i n t e l e v i s i o n andmovies, Inthe case of tests, I also p r e d i c t t h a t t h i s c l a s s i c a l t e c h n o l o g y w i l l d e c r e a s ei ni m p o r t a n c e . I b e l i e v et h a t tests w i l l d e c r e a s e i n importance because w e will h a v e t h e t e c h n o l o g i c a l means t o keep a much more s a t i s f a c t o r y and much more d e t a i l e d r e c o r d o f t h e l e a r n i n g of i n d i v i d u a ls t u d e n t s . Thus inferencesabouttheperformance of s t u d e n t s i, 1 and t h e i r c a p a b i l i t i e s f o r t a k i n g n e x t s t e p s w i l l dependupon a much L i t ' more s u b s t a n t i a l r e c o r d , a much b e t t e r b a s i s o f i n f e r e n c e t h a n w e have íncurrent tests, A s f o rl i b r a r i e s ,t h e y w i l l be totally transformed, 1 f e e l more confident of t h i s p r e d i c t i o n t h a n of of any t h eo t h e r s .E l e c t r o n i c access w i l l be widely available in homes, i n o f f i c e s , and i n s c h o o l s of what o t h e r o r g a n i z a t i o n a l k i n d we have.There w i l l belibraries but they w i l l b e e l e c t r o n i c l i b r a r i e s . I Finally,what abouts t h e w r i t t e n r e c o r d ? The w r i t t e n r e c o r d will undoubtedlycontinue t o haveimportance,but I think that when i t comes t o teaching,theobjectionsfoundinPlato'sDialogues t o thecold and n e u t r a l w r i t t e n word a s opposed to t h e warm and f r i e n d l y v o i c e o f t h e teacher w i l l o n c e a g a i n b e h e a r d a n d p e r c e i v e d a s s e r i o u s o b j e c t i o n s , What I a s a y i n g i s t h a t , i n s t a r t i n g m t o thinkaboutthefuture, w e can forecastobsolescence o r semi-obsolescence for a l l of t h e g r e a t technologies of t h e past--and t h a t is proper and a p p r o p r i a t e . 39
  • 11. c 1 ! Issues Raisedby Computer-Assisted Instruction The current operational use of computer-assisted instruction in many schools in this country, use that is well exemplified by the a detailed discussionof Alioto and Thornton, raises number of issues a I would now like to turn. of a broad educational and social kind to which I will discuss four rather closely related issues that have had a certain prominence in the discussion computer-assisted instruction (CAI): of 1) individualization of instruction, 2) standardization of instruction, 3) complexity of instruction, and4 ) freedom ín education. Individualization of Instruction The first issue centers around the claim that the deep use of a rigid regime technology, specifically computer technology, will impose of impersonalized teaching. Perhaps the best ímage this issue in h e of t of popular press ís that student protest at being by computer represented records in the files the centralschool administration. of To those of advancing this claim deep impersonalization, ít is important to say that indeed this is possibility, Computer technology a could be used in t h i s way, 2nd ín some instances probably will. This it is little different from saying that there are many teaching of kinds and many ways ín which the environment of learning and may be teaching debased, The important point to insist upon, however, ís that ís ít i certainly nota necessary aspectof the use of the technology. Indeed, our claim would e that oneof the computer's most b important potentialsís exactly the opposite. Computers can make 40
  • 12. learning and teaching more personalized rather than s o . Students less will be subject to less regimentation and lockstepping, because computer systems will be able to offer highly individualized instruction. It is important that the remark about individualized instruction not be passed in off as sloganeering. For many years,courses the methodology of teaching have emphasized the importanceteaching of according to the needsf individual students and therefore attempting o It to individualize instruction as much as possible. is recognized, however, by anyone who has examined the structure schools either of our at the elementary- or secondary-school level that a high ofdegree individualization ís extraordinarily difficult to achieve when the 25 to ratio of students to teachers is approximately 1. One direct approach is to reduce this ratio to something or 5 like 10 to 1, but the economics this approach is totally unfeasible in of All the long run and on a widespread basis. the evidence points to the fact that the cost having first-rate teachers in the classroom, of training these teachers appropriately, and providing them with the kind of salaries that will be competitive with other technical and for professional jobs in our society will simply make it impossible schools to afford any drastic reduction in the student-teacher ratio. One of the few real opportunities for offering individualized of instruction lies in the use computers as instructional devices. I do wishto emphasize thatI do not envisage replacing teachers It entirely, especially at the elementary-school level. would be technology only20 to my estimate that even under the maximumof use 41
  • 13. 30 percent of students' time in the elementary school would be spent at of computer terminals. While classes or substantial parts classes were working at terminals, teachers would be able to work with the remainder. Moreover, they would be able to work intensely with individual students, partly because some the students would be at the terminals, of and equally because routine of aspectsteaching would be handled by the computer system. At A t the post secondary leve1,matters are very different.most now colleges and universities,students do not receive a great dealof individual attention from instructors. Certainly we can all recognize the degree of personal attention ís greatercomputer in a program designed to accommodate itself to individual students' progress than on in the lecture course a general subject that more than 200 has students in daily attendance. Complex intellectual problems are yet to be solved in offering tutorial computer programs on advanced subjectse university t h at level. 1 do believe that the teaching basic skills ranging from elementary of mathematics to foreign-language instruction at the college level can well be performed by computer-assisted cocrses, - Extensive results of many efforts in computer-assisted instruction at the university level at Stanford are reported in Suppes (3.981). Standardization of Instruction A second common claim is that the widespread use of computer technology w i l l lead to excessive standardization education. This of 42 d
  • 14. claim was r a i s e d r e p e a t e d l y i n g e n e r a l d i s c u s s i o n s w i t h e d u c a t o r s and t h ei n t e r e s t e dp u b l i c .I n 1968 when I w a s l e c t u r i n g oncomputer- assisted instruction in Australia, exactly this claim was made byone -. of t h e s e n i o r p r o f e s s o r s of e d u c a t i o n i n A u s t r a l i a . When h e was asked howmany d i f f e r e n t books on A u s t r a l i a n h i s t o r y are used i n t h e A u s t r a l i a n secondaryschools,thereply was t h a t t w o books are used i n over 90 p e r c e n t of t h e c l a s s e s . To t h o s e f a m i l i a r w i t h c u r r e n t p r a c t i c e s i n t e x t b o o k a d o p t i o n and useinelementary and secondaryschools, i t i s clear t h a t a highdegree of s t a n d a r d i z a t i o na l r e a d y e x i s t s i n educatiorn, It i s i m p o r t a n tt o admit a t once t h a t a s t i l l g r e a t e rd e g r e e of s t a n d a r d i z a t i o nc o u l d arise from thewidespreaduse of computers. This i s a p o s s i b i l i t y n o t t ob ed e n i e d . It í s , however, i n no sense a necessity. It would technically be possible for a s t a t e department of e d u c a t i o n , f o r example, to require that a t 1O:lO i n t h e morningeveryfourth-graderbeadding one-half and o n e - t h i r d , o r e v e r y j u n i o r h i g h s c h o o l be reciting the amendments t ot h eC o n s t i t u t i o n . The c e n t r a ld a n g e r o f thetechnology i s that e d i c t s c a n b e e n f o r c e d as w e l l as i s s u e d , and many persons are r i g h t l y concerned a t t h e s p e c t o r of r i g i d s t a n d a r d i z a t i o n t h a t c o u l d be imposed. I think we would a l l a g r e e t h a t t h e e v e r - i n c r e a s i n g use of books from t h e s i x t e e n t h c e n t u r y t o thepresenthasdeepenedthe varieties of e d u c a t i o n a l and i n t e l l e c t u a le x p e r i e n c e generally a v a i l a b l e . It i s n o t d i f f i c u l t , however, t o c o n s t r u c t a c a r i c a t u r e o f p r e s e n t c o n c e r n s i n terms of t h e h o r r o r s i t might have been claimed would be introduced with 43
  • 15. thewidespreaduse of books. It is e a s y t o v i s u a l i z e a c e r t a i n t y p e of critic arguing that the highly individualized and e f f e c t i v e q u a l i t i e s of t h e i n d i v i d u a l t e a c h e r ' s v o i c e c o u l d b e l o s t í n t h e c o m p l e t e l y standardizeduse of t h e w r i t t e n word and t h e w r i t t e n t e x t . The i n d i v i d u a l i z a t i o n of comment, t h e a d a p t a t i o n of comment t o t h e e x p r e s s i o n of i n d i v i d u a l s t u d e n t s and t o t h e i r r e s p o n s i v e n e s s andcomprehension, would be l o s t i n t h e u s e o f b o o k s i n p l a c e of t e a c h e r s . NOW w e a l l r e c o g n i z e t h a t t h e r e i s a t r u t h a t t h e h e a r t of t h i s caricature,but it i s not a truth that argues for the abolition or suppression of books i n e d u c a t i o n , It a r g u e s r a t h e r f o r a wide v a r i e t y of educational experiences. There i s e v e r y r e a s o n t o b e l i e v e t h a t t h e a p p r o p r i a t e d e v e l o p m e n t i of C A I programs w i l l enable u s t o t a k e a h i g h l y s i g n i f i c a n t s t e p beyond t h e i n t r o d u c t i o n of books and t o o f f e r u n p a r a l l e l e d v a r i e t y and depth of c u r r i c u l u m t o s t u d e n t s of a l l ages,Indeed,theprobleminavoiding s t a n d a r d i z a t i o n is n o t t h e l i m i t a t i o n s of thetechnology,butour ignorance of how t o d i v e r s i f y a p p r o a c h e s t o l e a r n i n g i n m e a n i n g f u l and s i g n i f i c a n t ways, The b a s i c s c i e n t i f i c d a t a on t h e s e matters are p i t i f u l l y small, Opinionscan b e found i n e v e r y e d u c a t 2 o n a l g r o u p , b u t t h e y are o p i n i o n s . Moreover,from an o p e r a t i o n a l s t a n d p o i n t í t i s n o t p o s s i b l e t o f i n d any wide d i v e r s i t y ofapproaches t o most of t h e s t a n d a r d s u b j e c t s in e thecurriculum. D w e want a n a u d i t o r y a p p r o a c h t o t h e l e a r n i n g o of language f o r m e s t u d e n t a n d a visualapproachforanother? Do we want a politically oriented presentation of American h i s t o r y f o r some s t u d e n t s 44
  • 16. and a socially oriented presentation for others?o we think that D different cognitive styles can be identified sufficiently deep a in way to justify and guide the preparation of vastly different curricula in thesame general subject matter? These questions are not in any way bound to computer technology. of curriculum, the These are fundamental questions about the science art of teaching, and the philosophy of education that reach out to very general questionsof social policy, The computer there to is be used in whatever way choose. Uniform standardization of the we curriculum will be the end product only areso lacking we if in imagination as to achieve nothing else. Complexity of Instruction The third claim often heard is that the limitations of the technology and the problems that must be overcome in using it will be lead to the development of curricula that will almost necessarily simpleminded ín character. There are indeed some unfortunate historical examples tn'the literature of curriulum efforts, especially curriculum efforts a technological setting. in of In the early days programmed instruction, for example, a number of texts on elementary mathematics were written by psychologists or educators who did not have adequate training in mathematics. The programmed texts were splattered with "howlers" that received the eager attention the mathematics educators charged with of reviewing thebooks. Similar kindsof blunders can occur in the case 45
  • 17. . - 'i, of computer-assisted instruction, but there is nothing special about computers, and it hard to see that serious argument can be made is a to claim that there is any reason why computer-assisted Instruction will be worse than other forms of curriculum. The world is full of textbooks that are obviously many in bad respects. Within mathematics, for example, there are elementary books that are full mathematical of mistakes; there areo elementary als books that are mathematically correct, but pedagogically bad beyond belief. No doubt programs exhibiting these o extremes will also tw be written for computer-assisted instruction in mathematics, There are reasons, however, for thinking the situation will be more self-corrective in the case CAP than in the case ordinary of of and textbook writing. One reason is simply that data can be gathered authors can be presented in tough-minded fashiona clear with picture of the defects of the materials they have written. For example, in a program in elementary mathematics a if particular sequenceof concepts or problems is missed aby high percentageof the students encountering it, the transmission this informationto those who wrote the progrzm of ís an obvious signal that changes are needed. of Surprising as it may seem, authors textbooks in elementary mathematics seldom receive such information.They get many good and penetrating criticisms from teachers and other persons concerned with curriculum, but they seldom get hard behavioralondata individual parts of the text. Similarly, the evaluation that compares given new text a with a standard old text by looking at the achievement data for 46 r
  • 18. experimental and control groups i s almostalways f a r too c o a r s e a n evaluation to provide any focus for revising the p a r t i c u l a r f e a t u r e s of t h e new t e x t . On t h eo t h e rh a n d ,t h ep r o b l e m s of g a t h e r i n g d e t a i l e d data about an ordinary textbook are t o o onerous t o b e f e a s i b l e ín mos t cases. 3 i ' Freedom i n Education The f o u r t h and f i n a l i s s u e 1 wish t o d i s c u s s is t h e p l a c e of i n d i v i d u a l i t y and human freedom i n a modern t e c h n o l o g i c a ls o c i e t y . The c r u d e s t form of opposition to widespread use of technology i n e d u c a t i o n and i n o t h e r p a r t s of s o c i e t y is t o c l a i m t h a t w e face t h e r e a l danger of men becoming s l a v e st o machines. This argument i s o r d i n a r i l y made i n a romantic and naive fashion by those who seem themselves t o have l i t t l e understanding of s c i e n c e o r technology and how i t i s used i n our society. The b l a t a n t n a i v e t 6 of some of t h e s eo b j e c t i o n s i s well illustrated by the story of t h e man who was o b j e c t i n g t o a l l forms of technology i n our s o c i e t y a n d t h e n i n t e r r u p t e d h i s d i a t r i b e t o say t h a t he h a s t o r u s h o f € t o telephone about an appointment with his dentist, No s c i e n t i f i c a l l y i n f o r m e d p e r s o n s e r i o u s l y b e l i e v e s t h a t our society could survive in anything like i t s p r e s e n t form w i t h o u t t h e widespreaduse o€ technology. It is ourproblem t ou n d e r s t a n d how t o usethetechnology and t o b e n e f i t w i s e l y from t h a tu s e .I n d e e d ,t h e claim about: s l a v e r y i s j u s t t h e o p p o s i t e of t h e t r u e s i t u a t i o n . It i s o n l yi nt h i sc e n t u r yt h a tw i d e s p r e a d use of s l a v e r y has beenabolished, and i t may b e c l a i m e d b y h i s t o r i a n s of t h e d i s t a n t f u t u r e that mankind 47
  • 19. could n o t do w i t h o u t s l a v e r y , b e c a u s e j u s t a s human s l a v e s are being abolished, within a s h o r t time span they w i l l be replaced by machine s l a v e s whose u s e w i l l n o t v i o l a t e o u r e t h i c a l p r i n c i p l e s andmoral sensibilities Q One can indeedimagine a h i s t o r i c a l t e x t of 2500 o r 3000 A . D . asserting that for a short period in the l a t t e r p a r t of t h e t w e n t i e t h c e n t u r y t h e r e was l i t t l e s l a v e r y p r e s e n t on e a r t h , b u t t h e n i t was discovered that machines could be made t h a t c o u l d do a l 1 t h e work of human slaves, and so i n t h e t w e n t y - f i r s t c e n t u r y t h e l u x u r y o f s l a v e s and t h e p e r s o r , a l s e r v i c e t h e y a f f o r d e d was b r o u g h t n o t t o t h e p r i v i l e g e d few as had h i s t o r i c a l l y b e e n t h e ease b e f o r e t h e t w e n t i e t h century, but as a standard convenience and luxury for a l l people on earth I n our judgment, t h e t h r e a t t o human i n d i v i d u a l i t y andfreedom doesnot come fromtechnology,but Erom a n o t h e r s o u r c e t h a t was well described by John S t u a r t Ml i n h i s famous e s s a y O L i b e r t y . i l n He said, The g r e a t e s t d i f f i c u l t y t o b e e n c o u n t e r e d d o e s n o t lie i n t h e a p p r e c i a t i o n of means towardanacknowledgedend, but in the indifference of p e r s o n s i n g e n e r a l t o t h e end i t s e l f . If i t were felt t h a t t h e f r e e development o f i n d i v i d u a l i t y i s one of t h e l e a d i n g e s s e n t i a l s o f well-being;that i t i s n o t only a co-ordinateelement w i t h a l l t h a t i s designated by t h e ternns c i v i l i z a t i o n , i n s t r u c t i o n ,e d u c a t i o n ,c u l t u r e ,b u t is i t s e l f a n e c e s s a r y p a r t and condition of a l l t h o s e t h i n g s ; t h e r e would b e no d a n g e r t h a t l i b e r t y s h o u l d b e u n d e r - valued,andtheadjustment of theboundariesbetween i t and s o c i a l c o n t r o l would p r e s e n t n o e x t r a o r d i n a r y difficulty. J u s t a s booksEreed serious students from t h e t y r a n n y o f o v e r l y simple methodsof oral recitation, s o computerscan €ree s t u d e n t s from 48
  • 20. the drudgery of d o i n g e x a c t l y similar t a s k s u n a d j u s t e d a n d u n t a i l o r e d totheirindividualneeds. As in the case of other p a r t s of o u r s o c i e t y , our new andwondrous technology is t h e r e f o r b e n e f i c i a l use. It i s ourproblem t o l e a r n how t o use i t well. When a c h i l d of s i x b e g i n s t o l e a r n i n schoolunderthedirection of a t e a c h e r , h e h a r d l y h a s a concept of a f r e e i n t e l l i g e n c e a b l e t o r e a c ho b j e c t i v e knowledge of the world, H e dependsheavily upon every word and g e s t u r e of t h e t e a c h e r t o g u i d e h i s own r e a c t i o n s and responses. This i n t e l l e c t u a l weaning of c h i l d r e n i s a complicated process that w e do n o t yet manage orunderstandvery well, There a r e too many a d u l t s among us who a r e n o t a b l e t o express their own f e e l i n g s o rt or e a c ht h e i r own independentjudgments. W would c l a i m t h a t t h e e wise use of technology and s c i e n c e , p a r t i c u l a r l y i n e d u c a t i o n , p r e s e n t s a majoropportunityandchallenge. W do n o t want t o claim t h a t w e now e know very much about how t o r e a l i z e t h e f u l l p o t e n t i a l of human beings; b u t w e do n o t d o u b t t h a t our modern instruments can be used t o r e d u c e thepersonaltyrannyofoneindividualoveranother,andincrease individual.freedom. I n t e l l e c t u a l Problems of t h e F u t u r e Computers That Talk Let me b r e a k t h i s d i s c u s s i o n o f f u t u r e i n t e l l e c t u a l problems i n t o four parts that w i l l take us back through some of t h e earlier technologies, The f i r s t problem i s s i m p l yt h a t of t a l k i n g( o r a ls p e e c h ) . What d o e s - i t t a k et o get a computer t o t a l k ? The f a c t i s t h a t t h e t e c h n i c a l i s s u e s
  • 21. a arealreadypretty well í n hand. P e r h a p st h er e a d e rh a ss e e n on t e l e v i s i o n "The ForbinProject"--a movie about two l a r g e computers í n the Soviet Union and t h e U n i t e d S t a t e s g e t t i n g t o g e t h e r t o dominate t h e world. To t h o s e who haveseenthatmovie, l e t m e make a c a s u a l remark a b o u tt a l k i n g . A t e c h n i c a lc r i t i c i s mo ft h e movie i s t h a t t h e two very l a r g e and s o p h i s t i c a t e d c o m p u t e r s were conducting only one conversation a t a time. Already i n ourcomputersystem a t Stanford, w e have eighteen channels of independent simultaneous talk and t h e computer t a l k s i n d e p e n d e n t l y and d i f f e r e n t l y t o e i g h t e e n s t u d e n t s at t h e same time. So you see, we h a v e t h e c a p a c i t y f o r t h e computer t o talk. What w e need, however, is b e t t e ri n f o r m a t i o na b o u t what i s t o be s a i d . For exrmple, when L serve as a t u t o r ,t e a c h i n go n e of you, o r even when one of you is teaching me, intuitively and n a t u r a l l y w e follow cues and say things to each other without having an explicit theory of how w e saywhat w e say. W speak as p a r t of our humanness, e i n s t i n c t i v e l y , on t h e b a s i s of o u r p a s t experience. But t o satis- factorily talk with a computer,weneedan explicít theory of talking. Computers That L i s t e n The r e p l a c e m e n t o f t h e w r i t t e n r e c o r d , t h e k i n d o f r e c o r d t h a t was o b j e c t e d t o i n P l a t o ' s P h a e d r u s , c a n b e a v a i l a b l e t o us i n t h e talkingcomputer. The o t h e r side of t h a t c o i n which S o c r a t e s a l s o emphasized, or shouldhaveemphasized, concerns listening. It i s a much more d i f f i c u l t t e c h n i c a l problem, The problem of d e s i g n i n g a computer t h a t c a n l i s t e n to a student talk i s much h a r d e r t h a n havi-ng
  • 22. a student listen to the computer talk. However, the problem is solvable. The Use of Knowledge To have an effective computer-based systeminstruction, of we must transcend mindless talking and listening and learn to understand and use a large knowledge base.For example, ifwe were simply to require information retrieval from a knowledge base, it would be relatively simple in the near future to put the entire American Library of Congress in every elementary school, The capacity to store so information is increasing rapidly thatwe willbe able to store much more information than could ever possibly be used. A different and more difficult ris how to get the student question A s we come to understand to interact with the sizable knowledge base, how to handle such a knowledge base, the school of the future computer should be able to answer any wayward question that the student might know, once a student uses such a like to ask. Moreover, as we all capability, he will have a strong tendency to pursue still further questions that are more difficult and more idiosyncratic. will, I It think, be wonderful to see how children interact with such a system; in all likelihood, we will see children give to learning the high degree of of concentration and the sustained span attention they now give to commercial television. There is one related point want to emphasize. From the very I beginning of school, students learn quickly the of the land" and "law 51
  • 23. know theyshouldnotaskquestionstheteachercannotanswer.This t a s k of d i a g n o s i n g t h e l i m i t a t i o n s of t e a c h e r s b e g i n s e a r l y and continuesthroughcollegeandgraduateschool. So, once w e h a v et h e capacíty f o r answeringout-of-the-way q u e s t i o n s , i t w i l l bemarvelous t o see how s t u d e n t s w i l l take advantage of t h e o p p o r t u n l t y and t e s t t h e i r own c a p a c i t i e s w i t h a r e l e n t l e s s n e s s t h e y d a r e n o t e x h i b i t now. Need f o r Theories of L e a r n i n g a n d I n s t r u c t i o n The fourthproblem,and i n many ways t h e l e a s t - d e v e l o p e d f e a t u r e of t h i s t e c h n o l o g y , i s t h e development of anadequatetheory of l e a r n i n g and i n s t r u c t i o n , W can make t h e computer t a l k , l i s t e n , e and adequately handle a l a r g e knowledge d a t a b a s e , b u t w e s t i l l need t o develop an e x p l i c i tt h e o r y of l e a r n i n g and i n s t r u c t i o n .I nt e a c h i n g a student, young o r o l d , a g i v e n s u b j e c t m a t t e r o r a givenskill, a computer-based learning system can keep a record of e v e r y t h i n g t h e studentdoes. Such a systemcangatheran enormous amount o€ i n f o r m a t i o na b o u tt h es t u d e n t . The problem í s how t o u s e t h i s ínformationwisely,skillfully,ande€ficientlytoteachthestudent. i This i s something t h a t t h e v e r y b e s t human t u t o r d o e s w e l l , even though he does not understand a t a l l how hedoes i t , j u s t as h e d o e s n o t understand how h e t a l k s . None of u s understands how w e t a l k andnone of u s understands how w e i n t u i t i v e l y i n t e r a c t w i t h someone we are teaching OR a one-to-one basis. S t i l l , eventhoughourpastandpresent t h e o r i e s of i n s t r u c t i o n h a v e n o t c u t very deep, í t does n o t mean t h a t we havenot made some progress.First, w e a t l e a s t r e c o g n i z et h a t - 52
  • 24. t h e r e i s a s c i e n t i f i c problem; t h a t a l o n e i s progress. One hundred f i f t y y e a r s ago t h e r e w a s no e x p l i c i t r e c o g n i t i o n t h a t t h e r e was even a problem. There i s not s t a t e d i n t h e e d u c a t i o n l i t e r a t u r e of 150 y e a r s ago any view t h a t i t i s i m p o r t a n t t o u n d e r s t a n d i n d e t a i l t h e process of l e a r n i n g on the p a r t of t h e s t u d e n t . Only i n t h e t w e n t i e t h century do w e f i n d any s y s t e m a t i c d a t a o r a n y S y s t e m a t i c t h e o r e t i c a l i d e a sa b o u tt h ed a t a . What p r e c e d e s t h i s p e r i o d i s romance and f a n t a s y u n s u b s t a n t i a t e d by any s o p h i s t i c a t e d r e l a t i o n t o e v i d e n c e . So a t l e a s t w e c a n s a y t h a t w e have begun t h e t a s k . Alternative Educational Structures L e t m g i v e some examplesofchanges e we can effect in the s t r u c t u r e of e d u c a t i o n a l i n s t i t u t i o n s by u s i n g a p p r o p r i a t e l y t h e new technologyofcomputersandtelevision.Because of m own s p e c i a l y interest in computers,I shall concentrate on computer p o s s i b i l i t i e s ; but i t s h o u l d b e u n d e r s t a o o d t h a t t e l e v i s i o n would a l s o be a component fortheproposedchangesinstructure. High Schools M f i r s t exampleconcernstheorganization y of h i g hs c h o o l s . An American phenomenon,much d i s c u s s e d i n t h e h i s t o r y o f e d u c a t i o n i n t h e twentiethcentury,hasbeentheintroduction of t h e c o n s o l i d a t e d h í g h schoolthatbringstogetherstudentsfromsmallschoolsto a centrally located large school that offers a v a r i e t y of e d u c a t i o n a l o p p o r t u n i t i e s and r e s o u r c e st ot h es t u d e n t s . The American c o n s o l i d a t e d h i g h schools i s oneoftheglories of t h e h i s t o r y of education. Today, however, many 53
  • 25. of us €eel t h a t t h e l a r g e h i g h s c h o o l h a s become oneof t h e most d - i f f i c y l ti n s t i t u t i o n s t o d e a lw i t h from a s o c i a l s t a n d p o i n t . The mass aggregation of a d o l e s c e n t s i n o n e s p o t creates an environment that is on the onehandimpersonal,and on t h e o t h e r p o t e n t i a l l y e x p l o s i v e , partlybecause of t h e l a r g e numbers of s t u d e n t s and s u p e r v i s i n g a d u l t s in close quarters. The use of our new technology w i l l make p o s s i b l e a n a l t e r n a t i v e s t r u c t u r et h a t will r e t u r n u s t o t h e small s c h o o l s of t h e p a s t . The ideal high school of. t h e f u t u r e may c o n s i s t of no more than a hundred s t u d e n t sa n d ,i n many c a s e s , b e l o c a t e d c l o s e t o s t u d e n t s ' homes; i t =ay b e a s p e c i a l i z e d s c h o o l , c a t e r i n g t o s t u d e n t s ' p a r t i c u l a r interests. The v a r i e t y of curriculumandothereducationalresources, such as l i b r a r i e s , t h a t h a s b e e n s o ímportant a f e a t u r e of t h e consolidated high school, w i l l be made a v a i l a b l e by computerand t e l e v i s i o nt e c h n o l o g y . I shouldsay i n t h i sc o n n e c t í o nt h a tt h e changes that can be broupjhtabout through the use of computers are more d r a s t i c and more r a d i c a l t h a n t h o s e t h a t c a n b e e f f e c t e d o n l y t h r o u g h television. The d i f f e r e n c e i s t h e p o s s i b i l i t y of a high level of i n t e r a c t i o n 'between t h e cornputerprogram and t h e s t u d e n t , t h e s o r t of thing that is not possible with a standard television lecture or laboratory demonstration. ElementarySchools M second y exampleconcerns a l t e r n a t i v e s t o elementaryschools. Through most of t h e h i s t o r y of c i v i l i z a t i o n , young c h i l d r e n h a v e been 54
  • 26. taughtprimarily a t home, o f t e n p e r h a p s i n an extended family group. W now h a v e t h e t e c h n i c a l p o s s i b i l i t y e of r e t u r n i n g t h e s t u d e n t to the home o r t o a small neighborhood group. Althoughthese alternativeshave not y e t b e e n t h o r o u g h l y e x p l o r e d , it is important t h a t d i s c u s s i o n of t h e i r a v a i l a b i l i t y b e g i n as e a r l y as p o s s i b l e . A s f a r as I know, t h e new r o m a n t i c s í n e d u c a t i o n h a v e n o t d i s c u s s e d the radical possibility of d i s s o l v í r g e l e m e n t a r y s c h o o l s e n t i r e l y and returningthechildtothe home--or t o a neighborhoodgroup of t h r e e o r f o u r homes--for his education. In describing this possibility, l e t m e emphasizethat 1 a not m m a i n t a i n i n gt h a t i t is n e c e s s a r i l y a wise move, 1 do,however,think i t i m p o r t a n tt h a tt h i st e c h n i c a lp o s s i b i l i t y i s now a v a i l a b l e . At t h ev e r y l e a s t , i t s h o u l db ee x p l o r e de x p e r i m e n t a l l y . By p r o p e r use of c o m p u t e r t e c h n o l o g y , t h e b a s i c s k i l l s of reading,mathematics,and language arts can e a s i l y b e b r o u g h t t o t h e s t u d e n t i n t h e home o r i n a c l u s t e r of homes. Most of t h ee l e m e n t a r ys c i e n c ec u r r i c u l u ma l s o can be handled by c o m p u t e r .O t h e rp a r t s of t h e e l e m e n t a r y s c i e n c e curriculum, of t h e s o c i a l s t u d i e s program,and much of t h e work i n a r t and m u s i cc o u l db eh a n d l e db yt e l e v i s i o n . I envisage a s i t u a t i o n i n which a master t e a c h e r would d i v i d e h i s time among several u n i t s . The mothers of t h e c h i l d r e n wouldassume responsibilities for super- v i s i o na n d some would work as t e a c h e r s 'a i d e s . Such anapproach would b e c o m p l e t e l y n a t u r a l , b e c a u s e of t h e p r o x i m i t y of t h e s c h o o l t o t h e i r homes. I n many u r b a n s e t t i n g s , €or example, i t would be n a t u r a lt op l a c e classrooms i na p a r t m e n tc o m p l e x e s .I no t h e rd i s t r i c t s , 55 I
  • 27. a small one-room b u i l d i n g c o u l d b e added, or it might even be feastble t o pay a small r e n t t o one of t h e f a m i l i e s f o r t h e u s e o f s p a c e in a home. The main t h i n g t o a v o i d i s h e a v yc a p i t a le x p e n d i t u r ef o rp h y s i c a l p l a n t s ; w e have had too much of t h i s i n t h e p a s t . Higher Education The t h i r d a l t e r n a t i v e s t r u c t u r e d e a l s w i t h h i g h e r e d u c a t i o n . Here the possibilities are p e r h a p s t h e easiest t o implementand may b e r e a l i z e ds o o n e rt h a nt h eo t h e r s . In t h e areas s u r r o u n d i n gS t a n f o r d , several community c o l l e g e s are a l r e a d y o f f e r i n g c o u r s e s f o r c r e d i t by television. A s w e face t h e c o s t s t h r o u g h o u t t h e world of p r o v i d i n g highereducationforincreasingnumbers,theuseofcomputersand televisiontoreducecosts and t o d e c e n t r a l i z e t h e e d u c a t i o n a l e f f o r t seems almost i n e v i t a b l e . One can see t e r m i n a l sa v a i l a b l eí na p a r t m e n t complexes f o rs t u d e n t s a t t h e community-col2.ege level. A t a later stage,onecanenvisageterminsls i n plantswhereemployees work f u l l - time, b u ta l s oa c t i v e l yp u r s u et h e i re d u c a t i o n . I s h o u l dm e n t i o nt h a t in C a l i f o r n i a , for example, a r e a s o n a b l e p e r c e n t a g e of s t u d e n t s i n t h e state h i g h e r e d u c a t i o n a l s y s t e m are employed f u l l - t i m e , s i m u l t a n e o u s l y w i t ht h e i re m o l l m e n t as s t u d e n t s . The developmentofsuch a delivery system for higher education w i l l also n a t u r a l l y a n s w e r demands f o r c o n t i n u i n ge d u c a t i o nf o ra d u l t s . A t a more d i s t a n t d a t e , o n e can expecttheterminalresourcesdescribed earlier t o b e a v a i l a b l e i n t h e home f o r t h e t e a c h i n g of a w i d e r a n g e o f s u b j e c t s , f r o m f o r e i g n languages t o a d v a n c e d t e c h n i c a l c o u r s e s i n s c i e n c e a n d m a t h e m a t i c s . 56
  • 28. I emphasize,however, thattheproblems of i n s t i t u t i o n a l change of t h e s o r t j u s t d i s c u s s e d are poorlyunderstood.There i s evidence that universities, for example, are among t h e mostConservative i n s t i t u t i o n si no u rs o c i e t y . I n any case, t h e r a p i d development of alternatfve structures for education will b e n e i t h e r s i m p l e nor easy. O t h e o t h e r hand, t h e w i l l i n g n e s s of community c o l l e g e s , which do n i n o t have a l o n g t r a d i t i o n , t o c o n s i d e r new methodsof instruction i ! r; and new approaches i s encouraging,There are problems of p r e j u d i c e 3 and entrenchment, but there are a l s o i n t e l l e c t u a l problemsofunder- s t a n d i n gt h ek i n d s of o r g a n i z a t i o n w e want f o r t h e f u t u r e . The technology affords many p o s s i b i l i t i e s , b u t we have not thought through which of these possibilities we c o n s i d e r t h e mostadvantageous, t h e most i n t e r e s t i n g , o r t h e most e x c i t i n g . The c e n t r a l i d e a I havebeenstressing í s thatthroughcomputers we have t h e means t o d e v e l o p a l t e r n a t i v e s t r u c t u r e s t h a t will effectivelydecentralizethepresenteducationalsystem. - T h e i s s u e of i d e c e n t r a l i z a t i o n of s e r v i c e s , of places of work, ofalmost a l l aspects I of our l i f e i s g r a d u a l l y coming t o t h e f o r e as a c e n t r a l s o c i a l and p o l i t i c a l problemof t h e l a s t p a r t of t h et w e n t i e t hc e n t u r y . The issues involved in decentralizing education w i l l be among t h e most s i g n i f i c a n to ft h e s ep r o b l e m s of d e c e n t r a l i z a t i o n , The problems t h a t f a c e us are n o t r e a l l y t e c h n o l o g i c a l : t h e y are conceptual, i n s t i t u t i o n a l , and s o c i a l . I h a v ec e r t a i n l yn o t made anyconcrete suggestionsfortacklingtheseproblems; a t most, I h a v e t r i e d t o b r i n g them t o y o u r a t t e n t i o n .