I don't get how this ever came to be a law, since it seems so obviously false. Entropy in a closed system can only increase. If I close the doors in my room (so that it's a closed system) and spend one hour cleaning, then I have obviously decreased the entropy. It seems so obvious to me that SLOT should read: entropy in a closed system will only increase if there is no intelligent agent in the closed system. I can't figure out why that clause: "unless there is an intelligent agent in the closed system" was never added on to the law.