Lines drawn on the train appear to be bluish, though the pixels are grayish or purplish. Transformed with the two-color method.pic.twitter.com/EsuEXYpbD5
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Were you trying to see how much social expectations affect what people "say"? Akin to the social construction of stage hypnotism?
These illusion images are made with the two-color method proposed by Land. The method is cited by many textbooks of psychology or color research. Here I just examine individual differences in the illusion.
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