Well, there ya go. I've been reading HN for a few years now, but I'd never seen this video until this evening and I thought others might enjoy it.

Of all the links you've posted, only 2 have comments, and only 1 has any sort of discussion. They were also all posted in the same 2/3 day period, probably when the video was first made public (or linked to on Reddit?)

Anyway, It's something that interests me greatly, and I know others here will find it interesting too. If you have a spare hour, the longer version is worth a look, but the short animated one does a very good job of condensing most of the points