Clever Hans was a Russian breed horse, who could perform simple arithmetic and other intellectual tasks. The trainer had taught his horse, who would tap the answer with hoof.
Hans was said to have been taught to add, subtract, multiply, divide, work with fractions, tell time, keep track of the calendar and differentiate musical tones. Hans could read, spell and also understand German.
The owner, Von Osten would ask Hans
"If the eighth day of the month comes on a Tuesday, what is the date of the following Friday?”
Hans would answer by tapping his hoof.
How could Hans learn to answer these not so simple questions?
Photo Adaptation/Pixabay/wenphotos-1798295/
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