One day, during a short distance flight, the small plane had some problem and about to crush. There were4 people on board, but only three parachutes available.

First the pilot said: i am the best pilot in the country, I need to live on. Then he took one parachute and jumped out of the plane.

Second, a sales man shouted: I am the best salesman in the country, I need to live on. Then he also took one parachute and jumped.

Now there were 2 people on board and only one parachute left. One was an old man, the other was a dumb kid.

So the old man said: I am old, kid. i think i am going to die. The dumb kid said: no, i think we both can live.

Old man said: why, you are such a dumb kid, there is only one parachute left.

Dumb kid said: No, there are two. That pilot took my backpack.

最后我问她,为啥不是sales man把backpack拿走了,她挠挠脑袋,说:i don't know.