As the basis for The Animate and the Inanimate, William explored the possibility that all the laws of the universe are reversible in time, with the apparent exception of the Second Law of Thermodynamics. This is analogous to running a film backward—theoretically, all laws of physics would still hold true in a reverse-running universe, except the Second Law of Thermodynamics. This law is popularly known as the Law of Entropy; that is, the universe is proceeding on an unstoppable
