Q: A man is leaving on a business trip and stops by his office on the way to the airport. The night watchman stops him and says, “Sir, don’t take that flight. I had a dream last night that your plane would crash and everyone would die!”
The businessman cancels his trip and sure enough, the plane crashes, killing all the passengers.

The man gives his watchman a $10,000 reward for saving his life, then fires him. Why?

A: Because his night watchman was sleeping on the job.