Culture & illusion

en.wikipedia.org/wiki/M%C3%BCller-Lyer_illusion


. . . . Casual cultural studies revealed something surprising: perception of the illusion varies widely -- and Westerners are outliers. When scientists measured how different the segments appeared to different groups of people, they found that Westerners saw the greatest distortion. The Zulu, Fang, and Ijaw people of Africa observed half as much. The San foragers of the Kalahari didn't perceive the illusion at all: they recognized right away that a and be were the same length. People raised in Western countries literally don't see things the same way as the foragers of the Kalahari. Your experience of the world changes what you take to be true, and vision is no exception. ~ Page 125