But this unwelcome prediction raised a further puzzle: If, given enough time, the universe will inevitably stagnate in a state of heat death, then why, if it has existed forever, is it not now in a state of heat death? If in a finite amount of time, the universe will reach equilibrium, then, given infinite past time, it should by now already be in a state of equilibrium. But it’s not. We’re in a state of disequilibrium, where energy is still available to be used and the universe has an orderly structure.
