Forget self-sustaining space colonies, we don't even know how to build Earth-dependent space colonies. Because there's no plausible way we can build one in nea

Forget self-sustaining space colonies, we don't even know how to build Earth-dependent space colonies. Because there's no plausible way we can build one in near/medium future, we aren't constrained by pesky reality, so we can let our imaginations run wild and claim that it will solve the problem of government power and save mankind. And probably also cure cancer. It's the same pattern as how some startups avoid making money at all cost, so that their valuation can be detached from market reality.