I detest “The Marching Morons.”
Bova gives an accurate summary; it’s also the primary plot point of the movie Idiocracy. It’s also the premise behind eugenics and behind a lot of right-wing phony elitism. It’s wrong. It was a very popular story, but the reason isn’t complimentary: it fed into a strain of self-serving smugness in science-fiction fandom, the idea that people who read SF are special and brilliant and superior, we are the technological geniuses and far-seeing futurists, while the mundanes leech off our vision. The eugenics movement built on the same us-vs.-them mentality, that there are superiors and inferiors, and the inferiors breed like cockroaches.
This is a great post. There is little I can add to it except give it high praise. Thanks PZ.