A man comes home from work late. His 5-year-old son is waiting for him at the door. “Daddy, may I ask you a question?” “Yeah sure, what is it?” says the man. “Daddy, how much do you make an hour?” “If you must know, I make $20 an hour.” “Oh,” the little boy says, “Daddy, may I please borrow $10?” “Here you are. But why do you want to borrow money?” the father asks. “Because I didn’t have enough money, but now I do,” The little boy says happily. “Daddy, I have $20 now. Can I buy an hour of your time? Please come home early tomorrow. I would like to have dinner with you.”