> Something like calculus was cutting edge when Newton and Leibnitz were around, now it's what people learn in high school. To your point, I had lots of such i

> Something like calculus was cutting edge when Newton and Leibnitz were around, now it's what people learn in high school. To your point, I had lots of such in (American public) high school in Chicago suburbia, but now decades later it seems a small fraction of Americans ever took calculus. I find that sad, since I thought it kinda beautiful work.