What I got from the article is that the author is blaming Khan for not explaining a few things in his history videos that may not be immediately obvious to a vi

What I got from the article is that the author is blaming Khan for not explaining a few things in his history videos that may not be immediately obvious to a viewer. I think this is a _much_ bigger issue in classrooms. I've had many instructors and professors at my university skip over the details. Because (1) they assume we know it already, (2) they are too lazy to discuss or write it, (3) there is not enough time. Khan does an excellent job teaching in his math videos. Almost never have I felt like my questions weren't answered by him. He probably thinks as a beginner would and tries to make it as simplified as possible. He writes down everything. Even uses different colours for different concepts. Why? I don't know, maybe he wants to make sure his viewers benefit from his work. A classroom teacher couldn't care less, they still get paid at the end of the day.