7. Causality #1
Paul Dano's character is gradually dismembered in order to bait his future self into the an ambush. As the fingers and legs are cut away from the young Dano they disappear on the old one. Now, this use of causality is consistant throughout the run-time so it's no plot-hole but it's one of those head-scratching concepts. Since the film won't go into the intricacies of this paradox let's try to expand on this. They say that they can't just kill the guy here in the present because that would disrupt the time-line, not that cutting the younger version's fingers, legs and nose wouldn't do the same thing. His circumstances would be radically different than those that brought him back in time in the first place. A mildly interesting paradox that goes unexplored with this concept of instant synchronization of the timelines.