The doctor considers his question for a minute and then begins, "I have a friend who is an avid hunter, and never misses a season. One day when he was going out in a bit of a hurry, he accidently picked up his umbrella instead of his gun. When he got to the creek, he saw a prime beaver sitting beside the stream of water. He raised his umbrella and went, 'Bang,'Bang, and the beaver fell over dead. What do you think of that?"

The 90 year old thought a while and said, "I'd say somebody else shot that beaver."

The doctor replied..."My point exactly."