Rich and Strange Aeons

FTL with relativity leading to time travel/acausality, and the economics of manned space flight and colonization. These subjects will drive a population of intelligent-seeming people to confident insanity, second-guessing of actual physicists, and refusal to do math.

I suppose tendency to unwarranted feelings of superiority, libertarianism, and global warming denial are also risks, but they're not so peculiar to nerds. Also I see them less where I hang out these days.

I'm not counting Enterprise vs. Star Destroyer type arguments; that's harmless fun. Silly pointless time-wasting fun, in my view these days, but not as alarming.