The carved stone figure shows a mammoth from one aspect and a bison from another, mirroring the most famous ambiguous image of a rabbit and duck from the 1800s. Like many optical illusions, these ...
Most people use the terms “optical illusion” and “visual illusion” interchangeably. “That’s a pet peeve of mine,” says Pascal Wallisch, a neuroscientist and psychology professor at New York University ...
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