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Not this one. To create an outpost off-planet capable of sustaining human civilization at its current level in the event something happened to Earth would consu

Not this one. To create an outpost off-planet capable of sustaining human civilization at its current level in the event something happened to Earth would consume our entire economic output for many years, if it were even achievable.

adrianN 9y ago
Or it would consume a tiny fraction of our economic output for several generations while maybe also throwing off some sweet tech that is useful back here on Earth.
- aaron_m04 9y ago
  Do we have that long?
  - adrianN 9y ago
    Who knows? Better get started sooner than later.