Rewind Button or a Pause Button?

I would want a rewind button because if I messed something up I could do it over again. I could redo something that I would forget. A pause button wouldn't be that good. You can only stop time but not go back in time. If I had a rewind button I would redo some stuff that I did wrong. You could relive something over and over again with the rewind button. If the rewind button was only a one time use then I would use it for a really important time.

Life ~ Thoughts, Questions, and Dreams: Where is the Rewind Button?