User stories: from good intentions to bad outcomes - AgiNext 2020

•

2 recomendaciones•469 vistas

User stories are one of the most visible artefacts of most agile methods and have generated large quantities of expert advice. In my experience, much of that advice is often misinterpreted. In this session, we’ll explore several classic pieces of advice, to see how misunderstandings can lead to bad outcomes, despite the best intentions. The advice we’ll look at relates to: – an acronym: INVEST, created by Bill Wake – a technique: relative estimation (as used in Planning Poker, created by James Grenning) – a template: Connextra (As-A/I-Want/So-That), created by Rachel Davies You’ll leave with a clearer appreciation of user stories and an understanding of just how context-sensitive most advice is.

Tecnología

@sebrose h)p://smartbear.com
Seb Rose
User stories:
from good intentions to
bad outcomes

@sebrose h)p://smartbear.com
As a <role>
I want <goal/desire>
So that <beneﬁt>
Template - Connextra

@sebrose h)p://smartbear.com
Breakout room
Discuss:
• Why do user stories exist?
• What is the Connextra template for?
5 minutes

@sebrose h)p://smartbear.com
Placeholder for a conversa;on

@sebrose h)p://smartbear.com
… to detailed small
increments
From placeholder for a
conversa;on …

@sebrose h)p://smartbear.com
The Connextra
template has let us
forget why user
stories were
invented

@sebrose h)p://smartbear.com
I N V E S T
Acronym

@sebrose h)p://smartbear.com
Independent
Nego;able
Valuable
Es;matable
Small
Testable
I
N
V
E
S
T
Acronym

@sebrose h)p://smartbear.com
Breakout room
Valuable
Deﬁne the meaning of :
(in the context of user stories and INVEST)
5 minutes

@sebrose h)p://smartbear.com
Minimum marketable feature (MMF)?
What is value?
Potentially shippable increment?
Demonstrable functionality?
How might these interact with
“Small”???

@sebrose h)p://smartbear.com
Value is anything that:
- increases knowledge
- decreases risk
- generates useful feedback

@sebrose h)p://smartbear.com
INVEST
leaves plenty of
room for
misinterpretation

@sebrose h)p://smartbear.com
Technique -
story points

@sebrose h)p://smartbear.com
- Have no units
- Are rela;ve
- Are team speciﬁc
- Es;mated by people doing the work
Story points - refresher

@sebrose http://smartbear.com
Story points are rela;ve

@sebrose h)p://smartbear.com
... these studies which have for a few years now
given rise to the claim that "research shows that
people are better at relative than absolute
estimation" do not in fact seem to square with
that claim.
This doesn't entail that relative estimation
doesn't work - only that it is not proven.
http://guide.agilealliance.org/guide/relative.html

@sebrose http://smartbear.com
Is it small,
or just far away?

@sebrose h)p://smartbear.com
Story points
continue to cause
massive
dysfunction

@sebrose h)p://smartbear.comhttps://ronjeffries.com/articles/019-01ff/story-points/Index.html
Story points - apology

@sebrose h)p://smartbear.com
hHps://esJmaJon.lunarlogic.io/assets/cards-range-8fc41b2e3fd282125f4602a712020204.png
https://estimation.lunarlogic.io/

@sebrose h)p://smartbear.com
Bad outcomes
That doesn’t work here!

@sebrose h)p://smartbear.com
Examples revisited

@sebrose h)p://smartbear.com
No silver bullet
Not only are there no silver bullets
now in view, the very nature of
software makes it unlikely that there
will be any.
Frederick P. Brooks
"No Silver Bullet: Essence and Accidents of Software Engineering,"
Computer, Vol. 20, No. 4 (April 1987) pp. 10-19

@sebrose h)p://smartbear.com
PaNerns can help us ﬁlter
•Name
•Problem
•Context
•Forces
•Solution
•Resulting Context
•Known Uses
•Related Patterns
•http://wiki.c2.com/?CanonicalForm
•Context
•Forces

@sebrose h)p://smartbear.com
Takeaways
Understand the
“Why”Always consider
your context
Bad outcomes
don’t mean the
advice was bad

Seb Rose
Twitter: @sebrose
Blog: http:/cucumber.io/blog
E-mail: seb@smartbear.com http://bddbooks.com

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User stories: from good intentions to bad outcomes - AgiNext 2020

1. @sebrose h)p://smartbear.com Seb Rose User stories: from good intentions to bad outcomes

2. @sebrose h)p://smartbear.com As a <role> I want <goal/desire> So that <beneﬁt> Template - Connextra

3. @sebrose h)p://smartbear.com Breakout room Discuss: • Why do user stories exist? • What is the Connextra template for? 5 minutes

4. @sebrose h)p://smartbear.com Placeholder for a conversa;on

5. @sebrose h)p://smartbear.com … to detailed small increments From placeholder for a conversa;on …

6. @sebrose h)p://smartbear.com The Connextra template has let us forget why user stories were invented

7. @sebrose h)p://smartbear.com I N V E S T Acronym

8. @sebrose h)p://smartbear.com Independent Nego;able Valuable Es;matable Small Testable I N V E S T Acronym

9. @sebrose h)p://smartbear.com Breakout room Valuable Deﬁne the meaning of : (in the context of user stories and INVEST) 5 minutes

10. @sebrose h)p://smartbear.com Minimum marketable feature (MMF)? What is value? Potentially shippable increment? Demonstrable functionality? How might these interact with “Small”???

11. @sebrose h)p://smartbear.com Value is anything that: - increases knowledge - decreases risk - generates useful feedback

12. @sebrose h)p://smartbear.com INVEST leaves plenty of room for misinterpretation

13. @sebrose h)p://smartbear.com Technique - story points

14. @sebrose h)p://smartbear.com - Have no units - Are rela;ve - Are team speciﬁc - Es;mated by people doing the work Story points - refresher

15. @sebrose http://smartbear.com Story points are rela;ve

16. @sebrose h)p://smartbear.com

17. @sebrose h)p://smartbear.com ... these studies which have for a few years now given rise to the claim that "research shows that people are better at relative than absolute estimation" do not in fact seem to square with that claim. This doesn't entail that relative estimation doesn't work - only that it is not proven. http://guide.agilealliance.org/guide/relative.html

18. @sebrose h)p://smartbear.com

19. @sebrose http://smartbear.com Is it small, or just far away?

20. @sebrose h)p://smartbear.com Story points continue to cause massive dysfunction

21. @sebrose h)p://smartbear.comhttps://ronjeffries.com/articles/019-01ff/story-points/Index.html Story points - apology

22. @sebrose h)p://smartbear.com hHps://esJmaJon.lunarlogic.io/assets/cards-range-8fc41b2e3fd282125f4602a712020204.png https://estimation.lunarlogic.io/

23. @sebrose h)p://smartbear.com Bad outcomes That doesn’t work here!

24. @sebrose h)p://smartbear.com Examples revisited

25. @sebrose h)p://smartbear.com No silver bullet Not only are there no silver bullets now in view, the very nature of software makes it unlikely that there will be any. Frederick P. Brooks "No Silver Bullet: Essence and Accidents of Software Engineering," Computer, Vol. 20, No. 4 (April 1987) pp. 10-19

26. @sebrose h)p://smartbear.com PaNerns can help us ﬁlter •Name •Problem •Context •Forces •Solution •Resulting Context •Known Uses •Related Patterns •http://wiki.c2.com/?CanonicalForm •Context •Forces

27. @sebrose h)p://smartbear.com Takeaways Understand the “Why”Always consider your context Bad outcomes don’t mean the advice was bad

28. Seb Rose Twitter: @sebrose Blog: http:/cucumber.io/blog E-mail: seb@smartbear.com http://bddbooks.com

User stories: from good intentions to bad outcomes - AgiNext 2020

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