>>2
Yes, equilibrium. Ironically enough, I know the concept of a Nash equilibrium (had to design some AI that orders letter blocks with minimum moves then generalize on any stack goal with preconditions which also implemented backtracking to employ different strategies on such condition).
As I understand it the microcosmos of our universe is a dynamic system with random events occuring as well - quantum movements, that sort of. Therefore, it is impossible for our universe to "lock", to enter a state of equilibrium, because there's always those random movements which trigger phenomena. However, is it possible in theory for a univese (dynamic system) to become a system that has lost forever its ability to reach a previously reachable [1] state? (ie the state became unreachable)
1. To clarify my made up term for the readers: Reachable state B is a state which is reached directly or indirectly if quantum movement X occurs in system A, and unreachable state B' is a state which can't be reached by any of the dynamic systems possible quantum movements (again, directly or indirectly).