Yeah, kind of hilarious to me that this was posted here. I suppose if you’ve never encountered control systems at all before they are quite simple, elegant, and cool, but I’m surprised any technical person hasn’t come across them at some point.
I wouldn't underestimate the value of introductory submissions! Every topic is familiar to some users, no topic is familiar to all users, and let's not forget that newcomers, who still have everything to learn, are particularly welcome.
I think CS degrees are a bit light on classical theory in the modern day. In Australia CS degrees are what they say on the tin, but in America it seems almost as if CS degrees are anywhere from cybernetics to pure software development