4 forgotten code constructs: time to revisit the past?

Ok, I recognize I've violated community norms by suggesting that this is a troll. I retract that. But what possible grounds might somebody have for saying that recursion is "forgotten". Proof by induction is highschool math -- doesn't the recursive approach naturally suggest itself for a lot of problems? I write Python all day, so stack frames are pretty expensive and I usually talk myself out of it.

And goto? "X considered harmful" is a pervasive meme. Does anybody really not know that X was originally goto?

And eval? Even if your language doesn't support it, surely the idea is obvious? "Man, I sure could get out of this tight spot if my program could write another program and evaluate it!"

Am I living under some kind of weird rock, where I find the suggestion that these are forgotten language constructs deeply disturbing? Come on, internet! Argue with me! I'm feeling punchy.