Everyone always jumps to eugenics to explain Idiocracy, but I don't ever remember hearing genetics mentioned in the movie. The movie merely states that dumb adults raise dumb children. I don't know about you, but I see that everyday. This doesn't need to be explained by genetics. Children mimic the ways the adults in their lives act to model themselves on as they mature. You can counter this with things like public education or community involvement, but if the parents are involved and interact with their child, they're going to mimic them. If you know a smart person who was raised by dumb people, chances are the parents weren't really involved with the kid as they grew up.

This isn't even a obscure fact. What do you think those Jesus Camps are for? Why do you think rich people send their kids to elite schools?

Right. The solution to ignorance is education. Not selective breeding programs.

I mean, it's not nice to joke with eugenics but I think it was no more than that and besides the movie explicitly mentions that research of important topics halted in favour of projects with a more promising outpay and that education became worse and worse by the year, which are both very real threats.

We're talking about that movie where a man of below average intelligence goes to the future and saves the world by teaching them the value of education, right?