I always knew I was going to be rich. I don't think I ever doubled it for a minute. Einstein is reputed to have said that "compound interest is the eighth wonder of the world".Or something like that. And it goes back to that story, you probably learned when were in grade school. Where somebody did something for the king . And the king said, "what can i do for you ?"And he said, "Well, lets take a chessboard, and put one kernel of wheat on the first square, and then double it on the second, and double it on the third."And the king readily agreed to it ,and by the time he figured out what two the 64th amounted to, he was given away the entire kingdom. So it's a pretty simple concept ,but over time, it accomplishes extraordinary things.