 We're going back then. Well, we're going back, except we're going forward. The difference is, in film, once you cut that scene at three and a half seconds, you couldn't change your mind and say, I want it five seconds. But with non-linear electronic editing, you can hang those clips in a bin and then sequence them and then change your mind and make one scene in the middle of the piece twice as long with no fuss, no muss.