By 
Mark Changizi
 | 
TED-Ed Original

Why do we see illusions?

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.[Directed by TED Media].

Related tags:

consciousness
ted-ed
animation
illusion
sight
brain
science
biology
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