To succeed, you have to try more stuff than the other guy—fast. If you try more stuff in a hurry, you’ll make lots of mistakes. (It’s an Iron Law of Nature.) Hence, screwing up a lot is a very good sign of progress—perhaps the only sure sign. If we aim to (more or less) maximize screw-ups, then we must do more than “tolerate” screw-ups. We must “encourage” screw-ups. We must CEL-E-BRATE screw-ups!