i remember reading some old phyiscs question as to whether, when (and if (depending on the mass of the universe)the universe began to contract, if time would also flow backwards(or more accuratly that entropy would decrease). i remember one person (i think this was stephen hawkings actually) said that our lives would move in reverse and we'de "relive" our lives backwards. but i was wondering if this did happen would we realize it? if everything happened in reverse (i.e. chemical reactions in the brain, memory, ect.) then to us we would not realize it. we would see the universe just as it was before-expanding. but if in actuallity it was contracting and we only thought it was expanding then eventually, (if humanity ever lived to see it begin its contraction which I'm fairly certain we won't) we would die in the contracting or the big crunch which we didn't expect. is this a flawed line of thinking? (i know it's sort of pointless to post this because this theory of entropy decrease has been disproved but I'm just wondering about this logic.