Steve laid on the old "Combination vs Permutation" routine today. It's actually a fun little fact (to people who enjoy mathy things) about combination locks! Did you know that combination locks don't use a combination at all? They actually use permutations. Confused? Here is a quick explanation: A permutation requires an order to it, a combination does not. OK, maybe I don't a great job explaining it, but it's true! And now you can say you learned something today!