  We must first ask what the theory is really claiming. In a sensible version of the theory there is no claim being made to the effect that we find out the time order of events by checking the entropy of systems and taking the later event as the one in which some system has its higher entropy. The claim is, rather, that it is the facts about the entropic asymmetry of systems in time that “ground” the phenomena that we usually think of as marking out the asymmetrical nature of time itself.