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The Horse Who Could Do Math
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Animal OdditiesApr 30, 2026

The Horse Who Could Do Math

The Horse Who Could Do Math Berlin, 1904. A horse named Clever Hans drew crowds. His owner asked arithmetic. Hans tapped the answer. Generals, scientists, and journalists were stumped. Then psychologist Oskar Pfungst tested him in 1907. When the questioner didn't know the answer, neither did Hans. He was reading their posture, not the math.

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