 FACT: In one of the early scenes, where a group of people is trapped  in an elevator and they listen to another elevator dropping, theres  a factual mistake in the shot portraying the fall of the second  elevator. As the second elevator is falling, we can clearly see the  counterweight rising, but when the elevator hits the ground and the  wires snap, they just hang there. In a real life situation, the  counterweight wouldve gone slamming towards the ground, pulling the  wires along with it.