This document summarizes an experiment with monkeys where scientists placed bananas above a ladder in a cage. When one monkey climbed the ladder, the other monkeys were sprayed with cold water. Over time, any monkey that tried to climb the ladder would be beaten by the others, even if the punishments stopped. When monkeys were replaced in the group, the new monkeys learned not to climb the ladder without experiencing the cold water themselves, showing how behaviors can be passed down within groups without understanding the original reasons.