... an island with a colony of monkeys. Sweetpotatoes, which grew on the island, were the staple foodof the monkeys. The monkeys would scoop them up, cov-ered with sand and dirt, and eat them. ... And she would reply, ‘‘It tastes better,that’s why.’’Time went by, months and then years, and as the storygoes the young monkey began to convince other mon-keys of the wisdom of washing the ... Firstone, then ten, then fifty joined her. Now, for purposes ofexample, assume there were 30 0 monkeys on the island. The number of monkeys washing their sweet potatoesreached 99. The next day the...