I also prefer written text to video. But I'm prepared to admit that there are certain things that come through better on video, that there are quite a few learn

I also prefer written text to video. But I'm prepared to admit that there are certain things that come through better on video, that there are quite a few learners who learn better via video, and that great lectures have a wonderful charm that complements written material nicely. Feynman's transcribed lectures are great, but videos of Feynman's live delivery are extra great. The Long Island accent alone is worth the price of admission. Feynman sounds like a human being, a guy who lives down the street, not like some disembodied Platonic ideal of genius. I've also been in quite a few classes where the textbook was simply useless but the lecturer saved the day. [1] (And the opposite, as well.) And your ideas all sound great. Obviously there will be lots of room for experimentation. It's going to take many years to fully explore our new genres. --- [1] I would pay cash money for a video of Neil Ashcroft's graduate stat mech lectures. Or Roald Hoffmann on the band structure of solids -- although his textbook, written by him, isn't bad either; they complement each other perfectly, by design.