Once Mr．President visited an elementary school to talk to a group of third graders．He said to them，“Today we are going to discuss the difference between a tragedy，a great loss and an accident．”Then he said，“Can anyone give me an example of a tragedy？”A little boy raised his hand and said，“If a kid runs out in the street after a ball and gets hit by a car．”Mr．President said，“No，that would be an accident．Can anyone else try？”A little girl raised her hand and said，“If a busload of kids drove off a cliff．”Mr．President said，“No，that would be a great loss．Come on，anyone else？”A boy raised his hand and said，“If you and Mrs．President were on a plane and it blew up．”Then Mr．President said，“Well，Yes，but can you tell me why it would be considered a tragedy？”And the little boy said，“Well，it wouldn’t have been an accident，and it sure as heck wouldn’t have been a great loss．”