Assuming a big crunch theory were to be true (I know it's not too popular a theory these days) I figure a collapsing universe would need to have decreasing entropy. If entropy is decreasing, would the arrow of time flip? Also, because physics is just as valid with time moving backwards, would all the events of the universe "rewind" in a collapsing universe exactly how they played out when time moved forward? Would I live my life again, moving from death to birth? Just curious of anyone else's thoughts or any content that explores this. Thanks!