A fourth-grade teacher was giving her pupils a lesson on logic.
'Here is the situation,' she said. 'a man is standing up in a boat in the middle of a river, fishing. He loses his balance, falls in, and begins splashing and yellin
g for help. His wife hears the commotion, knows that he can't swim, and runs down to the bank. Why do you think she ran to the bank?'
A girl raised her hand and asked, 'to draw out all of his savings?'