I agree 100% that textbooks have too many levels of abstraction added over time. There's a really interesting answer given on this exact same subject by Bill Ga

I agree 100% that textbooks have too many levels of abstraction added over time. There's a really interesting answer given on this exact same subject by Bill Gates at the Aspen Festival - check it out here: http://www.youtube.com/watch?v=Iqf3rvg742g http://www.youtube.com/watch?v=Iqf3rvg742g