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Your statement completely ignores evolution and the human body's ability to adapt to its environment.

Sure, the timelines for such adaptations to develop are totally unknowable at this point, but you should never say never, especially with the progress being made in the field of genetics.

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Evolution requires selection. Or in other words, having humans evolve into surviving in microgravity would require letting the least adapted people die of it for tens of generations. This doesn't seem like something that potential space colonists would be exited about.

> having humans evolve into surviving in microgravity would require letting the least adapted people die of it for tens of generations.

Not necessarily. The least adapted people just need to have fewer children.

Or have children somewhere else.

Or we could select astronauts for longer missions based on these results. A person without legs (a double amputee, perhaps) might be able to perform all necessary activities while in orbit, but not suffer some of the ill effects.

>>Your statement completely ignores evolution and the human body's ability to adapt to its environment.

Maybe so, but how useful is a human body that's well adapted for space for any other environment?

I would pose the question of why you need a one-size-fits-all creature.

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