the only other thing in physics that behaves like time is heat
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Carlo Rovelli states in The Order of Time, “There is nothing intrinsic about the flowing of time....It is only the blurred reflection of a mysterious improbablity of the universe at a point in the past....The difference between the past and future does not lie in the elementary laws of motion; it does not reside in the deep grammar of nature. It is the natural disordering that leads to gradually less particular, less special situations.” He goes on to discuss on the only thing in physics that behaves like time is heat, insomuch that it only moves in one direction: from something hot to something cool. So as we age are we actually cooling down, as the molecular collisions and reactions in our body begin to subside?