What's the point? research or is there a more practical way to use this?
Perhaps a nice way to figure out what general topics to learn (and what order to learn them in) when self-studying a subject
Edit: looking closer, it seems to be more about recommending textbooks based on how many syllabi include a given textbooks
This is super cool! Based on this, the most popular CS textbook is (of course) CLRS. For physics, it's Halliday. And for calculus, it's Stewart, a demonstrably suboptimal choice.