> The military thing is a much bigger flywheel. A lot of technology really comes out of military research or is supported in key ways by military projects.

Yeah, I wouldn't call all our military spending unproductive waste. I'm not insensitive to arguments even about building stuff we don't need simply in order to keep a particular industry healthy-enough that it's ready to expand in case of an actual, serious war. I think a good deal of it is, though, and the reason it's hard to tamp down is that it's not-so-secretly a jobs program that Republicans are willing to vote to fund (even if we'd get more out of spending the same money to have the same people build parks infrastructure or whatever).