a demo of the Oppel-Kundt illusion: The rightmost girl of the left group is placed just at the middle between the leftmost girl and the rightmost lonely one, but she appears to stand rightward.pic.twitter.com/hgNepIC1kF
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I can see the Ponzo illusion with right- or left-pointing inducers. I see the left one taller than the right one.pic.twitter.com/T8lSiTvdlB
Nope. But when they are horizontally aligned, the girl closer to intersection looks taller 
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