(NB: I'm not ruling out those bvacations/b on the moon -- just saying that long-term colonization, especially at long distances, will require adaptations so radical we may effectively end up with another species.) b....../b That is, nobody is planning an interstellar voyage right now, anybody responsibly thinking about it is not criminally wasting significant resources doing so, and anyway it is bringingly/b clear that your assumptions will not in fact be the default used when ...