Nuclear power plausibly would have been created without military incentives--it just isn't that hard, and all the pieces were in place before Manhattan. Nuclear

Nuclear power plausibly would have been created without military incentives--it just isn't that hard, and all the pieces were in place before Manhattan. Nuclear weapons are somewhat harder (uranium bombs are relatively easy, plutonium harder, fission much harder.) So if we're making imaginary arguments, I'm going to imagine a world where nuclear power was invented via civilian research, but limited military research meant no nuclear weapons :-) The important thing is that it doesn't have to be military research that drives any of this stuff. If you want spin-off benefits--and who doesn't?--invest heavily in space exploration. It would have precisely the same odds of civilian spin-off benefits as military research, and would involve building stuff that a) isn't primarily intended to destroy itself and whatever productively useful thing it is aimed at and b) would get us closer to spreading humanities eggs across multiple baskets. So "spin off benefits are good" is not a very strong argument for military research. It's a strong argument for research, but why not fund something productive rather than destructive?