Allowed by who? I dont think you understand what I was saying. The people alive today are irrelevant to the issue as humanity isn't capable of this yet.
What would make humanity capable of it?
A major emergency I would guess. That or if climate change was set to destroy us. Building habitats that could hold ecosystems would take a lot of collective effort.
A major emergency like what? Climate change set to destroy us?
You're referring to a major kind of catastrophe where we humans are forced to work together or die?
Essentially, yes.
Oh. Well, this seems rather self-evident; I agree.
