Questions and observations after a second viewing
So the US government started an experiment to clone people underground with their counterparts on the surface, and to control them from below. However, whilst the cloning was easy, getting them to behave independently of each other was not possible and the clone imitated the progenitor, hence the "tethering".
So I have a few questions, and excuse me if I use my own terms for the above and below people:
1. If the Surfacers were meant to follow the Tunnellers, then why were the Tunnellers behaving more like zombies than the Surfacers? Cos they had been abandoned by then, were directionless and the Surfacers "took over"?
2. I know that Adelaide (a Surfacer) actually switched roles with Red (a Tunneller) when she went into the hall of mirrors, but some people have suggested that Jason was also swapped. IF there are pairs of humans (Surfacer and Tunneller), and the Tunneller Jason (the facially-scarred boy) was killed, then who could've replaced Jason? As far as the film says, it was a human and a clone each.
3. Since the kidnapped child Adelaide basically became the leader of the Tunnellers, then didn't she teach English to them? If so, how come none of them spoke English after they went to the surface and started killing?
4. Did the underground escalator always go down? When Adelaide explores the underground, it is going down then, but it is also doing so when Red first discovers it. Did the Tunnellers find a way to reverse its direction of travel? Otherwise, it would've been hilarious seeing all of the Tunnellers scrambling up it as fast as they could go and getting exhausted!