I’m not quite a fair case as I already understood all of the stuff in this talk (or at least broadly in the case of the more advanced maths), but I’m quite confident that when I was starting delving into graphics stuff that I would have got more out of half an hour going through this presentation by myself than ten times as long with a lecturer at Uni. Even one-on-one would have taken a few times as long without such visible demonstrations as are contained so beautifully in this presentation.<p>Uni lecturers <i>can</i> actually work on these sorts of things if they are so inclined; I remember one lecturer who had developed such a system, with the assistance of one of his students for part of the time as part of a research project, all as a part of his job at the Uni, not as volunteer work.<p>You are, of course, quite correct that the actual implementation of such a thing would take a long time; I’m familiar with this as I’ve been working on a number of more advanced interactive things and visualisations as part of some Rust training materials that I’m producing (“a book” is such a sad way of expressing such a rich subject). These things definitely do take a long time, but if they’re done <i>well</i>, they seriously are well over an order of magnitude better than the alternatives.<p>Most of all, I just want people to <i>see</i> things like that so that they realise just what is possible. Slides! Oh, such shackles we needlessly place upon ourselves. Static text! Oh, the vistas of imagination never explored, never seen, never even imagined.