This Optical Illusion Fools Monkeys as Well as Humans
The Thatcher Effect is a well-known optical illusion, first tested with a picture of Margaret Thatcher. It’s glaringly obvious, but humans almost always fall for it. So, it seems, do monkeys. The Thatcher Effect The Thatcher Effect, or Thatcher Illusion, first made headlines back in 1980. Professor Peter Thompson took a picture of Margaret Thatcher…