Your world is very different from mine, because it would never occur to me to ask that question, much less to answer it with anything but an emphatic "no". I am

Your world is very different from mine, because it would never occur to me to ask that question, much less to answer it with anything but an emphatic "no". I am fairly sure I have never learned anything about programming from a video and have trouble imagining how that would work. I am curious - who produces these videos? Where do you find them? What sorts of things do you learn from them? How do they overcome the slow pace and low information density which appear to me to be intrinsic to the medium?