How perception works: why what you see is your brain's best guess
Lightness and contrast: why the same grey can look like two greys
Two grey squares, one on a dark ground, one on white. One looks much lighter, and they are the same grey. Why does your brain see two?
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1
Miva's card has two grey squares, one on a dark ground and one on a white ground. "The same grey," she says. Rono laughs: the left one is much lighter.
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Look for yourself. Then put two fingers on the screen to cover the grounds, and look at the squares alone.
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