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P S YC H
WHEN AN OP T IC A L IL LUSION
Cross your eyes. Position the page just right. Pull it close, then away. Do you see it? An optical illusion is a secret hiding in plain sight.
For a flash
S BY RD
Liz S
in the 1990s, Magic Eye, the world’s most famous and infamously frustrating—optical illusion, was everywhere. Posters bearing the brightly colored op-art hung from the walls of Midwestern mall kiosks. Postcards filled gift store racks. Books with taglines like “A new way of looking at the world,” lined and then disappeared from store shelves as people snatched up more than 20 million copies of the series. 64
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