Einstein Explained
Old Mr. Rosenberg said to his physicist son, “Tell me something. Everyone says Albert Einstein was one of the greatest minds in the world. But what did he do? “Among other things, Papa,” said his son, “he worked out the theory of relativity.” “And what is that?” Rosenberg’s son hesitated, then said, “Well, Papa, without going into detail, it’s a way of working out a theory of the universe by beginning with the assumption that some matters we have always…

