I watched a home reno show on HGTV where one episode was kinda out in bumfuck California and they had a big tank for water and a truck would come and refill it routinely.

Did this plus with Apple Pencil I could take detailed notes/highlights on the PDF texts, plus take notes of the lecture slides PDFs directly on the iPad.

Sometimes you need the simplified building blocks before you can grasp the full scope, though, and sometimes the professors don’t provide the building blocks but the YouTuber does. So the “core concept” videos end up helping you understand the professor’s details.

In fact, if there was any rich person I’d label as crazy and obsessive and self centered enough to comb through individual tweets it would be Elon.