@nikitonsky can you please at least add links to YouTube videos?

As I wrote in a neighboring thread, the <video>s are way too big to comfortably watch on a phone, or with a less-than-ideal connection. And hard to skim through to find a part I'm interested in, because of lack of chapters or a transcript.

(as it turns out, _some_ of the things a YouTube embed does are actually useful, after all :)