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Why do we see illusions? - Mark Changizi


5,058 Questions Answered

TEDEd Animation

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Why can’t our extremely complex eyes render simple optical illusions? Surprise, surprise -- it comes back to the brain, which has only evolved to encounter natural stimuli. At TEDYouth 2012, Mark Changizi explains how the brain reckons with optical illusions.

Since the brain is slow, it does something really fancy. What does it do so that we are fully functional, mobile beings that don't run into stationary and moving objects?

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  • Educator Mark Changizi

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