this is amazing. the box labeled "A" and "B" are exactly the same shade. "no they're not" you say. yes, they are. i've tested this extensively and it's true. it's one of those things where your brain is trained to see things a certain way but it's an illusion. the shadow cast by the cylindar makes us think they are two different shades but they are not. believe me, or test it yourself.
for more illusions, click here.
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