optical illusion
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Watch: Optical illusion with arrows makes you think these circles shrink and grow, but they don’t
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Watch: This arrow always points right, no matter which way you turn it
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We learnt why zebras have stripes by draping horses in striped coats
Tim Caro, The Conversation Martin How, The Conversation
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Is it a duck or a rabbit? The philosophical underpinning of an old visual trick
Stephen Law, Aeon
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Watch: The internet is divided again as people are convinced this staircase is spinning (it’s not)
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Watch: Did somebody really toss their dog out of a plane and record it on video?
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Watch: This artist’s optical illusions on her body will leave you in a knot
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Helicopter illusion video: You can't wrap your head around it even when you know how it was done
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