my personal favourite is textalk's video about worldbuilding + computer science! https://www.youtube.com/watch?v=07wQAYS3rCk

i feel like the fact that everything we see inside of homestuck exists inside a (theoretically infinitely expanding) game program is such an underrated piece of the lore. like there's so much other shit going on that people don't even stop to grapple with the fact that ~ATH can only work bc it's interacting with the universe's code. like that's crazy!!!