aliens may consider being at very bottom of 50mi of O2/N2 atmosphere @ 14.7 psi to be crushing relative to the vacuum of space.
yes...i think the parent is referring to humans, not aliens.
the point is, what's living at these pressures is not human, so you cannot ascribe to them a human-relative definition of "crushing". it's obviously normal and not "crushing" to them.
yes, but I imagine by "future undersea colony" Apocryphon is referring to a colony of humans...
ah, i missed that bit. time for more coffee it seems.