1. Can we trust our senses?

15. How many times does the letter F appear in the following sentence? (You have 10 seconds.) FINISHED FILES ARE THE RE-SULT OF YEARS OF SCIENTIF-IC STUDY COMBINED WITH THE EXPERIENCE OF YEARS

16. How many times does the letter F appear in the following sentence? (You have 10 seconds.) FINISHED FILES ARE THE RE-SULT OF YEARS OF SCIENTIF-IC STUDY COMBINED WITH THE EXPERIENCE OF YEARS F INISHED F ILES ARE THE RE-SULT OF YEARS OF SCIENTI F -IC STUDY COMBINED WITH THE EXPERIENCE OF YEARS F INISHED F ILES ARE THE RE-SULT O F YEARS O F SCIENTI F -IC STUDY COMBINED WITH THE EXPERIENCE O F YEARS

18. “ Aoccdrnig to a rscheearch at an Elingsh uinervtisy, it deosn’t mttaert in what oredr the ltteers in a wrod are, the olny iprmoetnt tihng is taht frist and lsat ltteer is at the rghit pclae. The rset can be a toatl mses and you can sitll raed it wouthit porbelm. Tihs is bcuseae we do not raed ervey lteter by it slef but the wrod as a wlohe. Ceehiro!”

20. How we name something changes how we perceive it

22. Fascinated by what was happening

23. Bored by what was happening

26. How should we see this shape? How can adding 3 lines change our perception?

34. M. C. Escher

37. Digital Harbour Port 1010, in Melbourne, Australia Café Wall Illusion

38. Count the black spots. How many are there?

39. Ambiguity

44. Old woman or Young woman?

45. Man or Woman?

46. Figure-Ground Ambiguity

53. What we do not see What we see

54. Geordi La Forge from Star Trek: The Next Generation

61. Why don’t we perceive things which happen very fast or very slow? Théodore Géricault’s “The Epsom Derby”

62. What film reveals about how horses run

68. Filmmaker Stephanie Morgenstern "A few years ago, I mentioned to a friend that I remembered phone numbers by their colour. He said "So you're a synesthete!" I hadn't heard of synesthesia (which means something close to 'sense-fusion') – I only knew that numbers seemed naturally to have colours: five is blue, two is green, three is red… And music has colours too: the key of C# minor is a sharp, tangy yellow, F major is a warm brown..."

69. Nobel prize winning physicist, Richard Feynman When I see equations, I see the letters in colours – I don't know why. As I'm talking, I see vague pictures of Bessel functions from Jahnke and Emde's book, with light-tan js, slightly violet-bluish ns, and dark brown xs flying around. And I wonder what the hell it must look like to the students."[

71. A cloud formation that some have interpreted as a the face of God

72. A satellite photo of Mars, taken in 1976, with shadows creating the famous Face on Mars

73. A satellite photo of Mars, taken in 2006, with higher resolution and different lighting conditions

75. Sold on eBay for $28,000

76. Faces in the smoke of 9/11

77. “ People may ask themselves, why would there be faces in the smoke, and also, why so many? I believe I know the answer to that question. Demons can feel and experience things like we can. Consider that picture of the demon below that has its head sticking up like it is on some kind of rollercoaster ride. An act of hatred and violence is a thrill ride for a demon, they not only participate, in so far as influencing someone to commit acts of violence, they get a thrill during the act. Demons knew what was going to happen in New York and they gathered there to jump in at the point of the impact, like a human jumping onto a moving train to have a thrill. ” From www.christianmedia.us

85. How can you stop the waves? This is not an animation. But it moves.