This guy’s videos are awesome. He also has one on Klotski and the double pendulum. Beautiful graph animations.
OH it's that guy.
His double pendulum video was orgasmic.
Edit: Oh wait, no, I was thinking of the Drew's Campfire double pendulum video. That video was extra interesting because the creator is not a typical content producer. He just has a few videos without any views, then dropped what might be one of the best videos of all time, and then went back to his technical videos.
I also liked the one on lambda calculus. I hope one day we will be able to find interpretation of what it actually means for PLUS Times Plus. Maybe this is how we will explore nonstandard arithmetic.
What is PLUS times PLUS?
https://www.youtube.com/watch?v=RcVA8Nj6HEo