Well, it is basically irrelevant. The human proclivity for violence hasn't stopped any of our technological progress so far and, if anything, it's helped our exploration progress. For all we know, in 100 years, instead of incarcerating violent criminals, we may stick them in tubes and shoot them off to Alpha Centauri.

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"Government big enough to supply everything you need is big enough to take everything you have... The course of history shows that as a government grows, liberty decreases."

-Thomas Jefferson