@goatsarah @davewoodx My guess was the air in the suit was toxic. 😄 The show was intentionally misleading regarding that! Holston even takes the helmet off but we all assumed it was too late by then.
Aside from the obvious analogy to social classes, I ended up not getting the lack of elevators, though. They mention in an episode it was some kind of rule set by the founders by never explain why.