The original question was: Lets say that we determine that an event is physically possible. Is there any sense in saying that the event will NEVER happen even if it has a non-zero probability? In other words, if it can happen, will it happen given enough or infinite time? So simply knowing that something is “possible” doesn’t mean that the universe can ever be in a state that would eventually lead to that thing happening. As far as happening eventually: if it’s not happening now (in an infinite universe), it almost certainly never will.