I find that the phrase "pause+rewind" doesn't quite give the right impression; sure, sometimes you missed a sentence and need to rewind, and that's great. Othe

I find that the phrase "pause+rewind" doesn't quite give the right impression; sure, sometimes you missed a sentence and need to rewind, and that's great. Other times, I'd like to fire up an editor and type out the code the lecturer's showing (I'm often surprised at how many things my mind missed just skimming the slide), see if it compiles, how it behaves for 10 minutes or so. Kind of like a self-imposed mini lab, if I'm feeling a bit behind on the topic at hand. Other times, it's great to play it at 1.5x, or even skip sections entirely. E.g. if I'm comfortable with the topic / environment, I don't want to sit through 20 minutes of setting an IDE up, or a walkthrough of "hello world". I wonder if it would be possible to deviate from the strict linear progression of lectures, and allow the learner to choose. The difficulties in prerequisite knowledge might outweigh the benefits, but it might be an interesting idea. More of a library of closely related lectures and information, rather than a single course.