Money-making biomachines. When we get good enough to make replacement bones and such out of metals that play nicely with human innards that are better than the ones we get to begin with, what then?
Is there a need for physical activity? If we could sustain our heads with mechanical devices completely, would we choose death or the ability to try to dream all the time? Can you practice dreaming? Can you re-wire your brain to stop wanting to move its body around? Would you go insane?
Futurama!
Good stuff.
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