full transcript
From the Ted Talk by Beau Lotto: Optical illusions show how we see
Unscramble the Blue Letters
This is a huge problem, because it means that the same image could have an iitifnne number of possible real-world sources. Let me show you what I mean. Imagine that this is the back of your eye, okay? And these are two projections from the world. They're identical in every single way. Identical in shape, size, specatrl content. They are the same, as far as your eye is cneconred. And yet they come from completely different sources. The one on the right comes from a yoellw surface, in shadow, oriented fiancg the left, viewed through a pinkish medium. The one on the left comes from an orange surface, under direct light, facing to the right, vieewd through sort of a bluish mudeim. cpemtlloey different meanings, giving rise to the exact same retinal information. And yet it's only the retinal information that we get.
Open Cloze
This is a huge problem, because it means that the same image could have an ________ number of possible real-world sources. Let me show you what I mean. Imagine that this is the back of your eye, okay? And these are two projections from the world. They're identical in every single way. Identical in shape, size, ________ content. They are the same, as far as your eye is _________. And yet they come from completely different sources. The one on the right comes from a ______ surface, in shadow, oriented ______ the left, viewed through a pinkish medium. The one on the left comes from an orange surface, under direct light, facing to the right, ______ through sort of a bluish ______. __________ different meanings, giving rise to the exact same retinal information. And yet it's only the retinal information that we get.
Solution
- completely
- yellow
- spectral
- viewed
- facing
- concerned
- medium
- infinite
Original Text
This is a huge problem, because it means that the same image could have an infinite number of possible real-world sources. Let me show you what I mean. Imagine that this is the back of your eye, okay? And these are two projections from the world. They're identical in every single way. Identical in shape, size, spectral content. They are the same, as far as your eye is concerned. And yet they come from completely different sources. The one on the right comes from a yellow surface, in shadow, oriented facing the left, viewed through a pinkish medium. The one on the left comes from an orange surface, under direct light, facing to the right, viewed through sort of a bluish medium. Completely different meanings, giving rise to the exact same retinal information. And yet it's only the retinal information that we get.
Frequently Occurring Word Combinations
ngrams of length 2
collocation |
frequency |
light surround |
3 |
blue flowers |
3 |
retinal information |
2 |
brain evolved |
2 |
desert scenes |
2 |
visual field |
2 |
green light |
2 |
dark surrounds |
2 |
gray tiles |
2 |
light coming |
2 |
Important Words
- bluish
- completely
- concerned
- content
- direct
- exact
- eye
- facing
- giving
- huge
- identical
- image
- imagine
- infinite
- information
- left
- light
- meanings
- means
- medium
- number
- orange
- oriented
- pinkish
- problem
- projections
- retinal
- rise
- shadow
- shape
- show
- single
- size
- sort
- sources
- spectral
- surface
- viewed
- world
- yellow