> Theres probably a "best" lecture or lecturer out there for each topic.
This is something I've been thinking about for a while. Let's assume that there is one "best" lecture for a given topic. I think then effort could be spent with smaller study groups where students can have direct access to people who can help them understand the concepts. There is little reason to have so many other different takes unless they add to the universal body of knowledge.
And part of the problem with asking "what's the best lecture on x" is that the replies often come from people who have seen one prestigious lecture, and recommend the one they are familiar with. Popularity breeds popularity. There's a much smaller sample of people who sat through 20-30 of the same lecture series, for the same course, from different professors, and know which parts are the best from which person.
This is something I've been thinking about for a while. Let's assume that there is one "best" lecture for a given topic. I think then effort could be spent with smaller study groups where students can have direct access to people who can help them understand the concepts. There is little reason to have so many other different takes unless they add to the universal body of knowledge.