Partly this is a meme diffusion problem - eg. we have really good diagrams that explain visually why Pythagoras' theorem holds ... yet students often don't see

Partly this is a meme diffusion problem - eg. we have really good diagrams that explain visually why Pythagoras' theorem holds ... yet students often don't see these more intuitive forms. Another example is the Feynman Video Lectures are effectively inaccessible, due to being in an ugly format - they should be on youtube as a planetary resource. I was recently looking at reviewing University chem so I can have informed discussions with my teenage son.. Atkins has a great book, but at an exorbitant price. College texts seem to be a kind of scam. Some would argue its morally justified to pirate such content. We seem to be stuck in all these local minima for minor psychological or economic reasons. There should be open texts that cover most of the basics of highschool and freshman science, with upkeep costs shared by universities/schools or covered by a library tax. We can think of education methods as a technology itself, and the best technology, namely the best explanations, are much much better than the average - how do we propagate the best ideas ? Having ratings on quality, like those on goodreads and amazon, seems to be a practical benefit, but maybe we need smaller granularity - eg. rate a particular diagram on an open biochem textbook wiki.