programmer vs engineer

A Programmer and an Engineer were sitting next to each other on an airplane. The Programmer leaned over to the Engineer and asked if he wanted to play a fun game. The Engineer just wanted to sleep so he politely declined, turned away and tried to sleep. The Programmer persisted and explained that it was a real easy game. He explained, "I ask a question and if you don't know the answer you pay me $5. Then you ask a question and if I don't know the answer I'll pay you $5." Again the Engineer politely declines and tries to sleep.

The Programmer, now somewhat agitated, says, "Okay. If you don't know the answer you pay me $5, and if I don't know the answer I pay you $50!" Now, that got the Engineer's attention, so he agrees to the game. The Programmer asks the first question, "What's the distance from the earth to the moon?" Then Engineer doesn't say a word and just hands the Programmer $5.

Now, it's the Engineer's turn. He asks the Programmer, "What goes up a hill with three legs and comes down on four?" The Programmer looks at him with a puzzled look, takes out his laptop computer, looks through all his references and after about an hour wakes the Engineer and hands the Engineer $50. The Engineer politely takes the $50 turns away and tries to return to sleep.

The Programmer, a little miffed, asks, "Well what's the answer to the question?" Without a word, the Engineer reaches into his wallet, hands $5 to the Programmer, turns away and returns to sleep.