Robert M Watson Jr
Calculus is simple ... unless you don't know algebra, analytic geometry, etc. The complex becomes simple when built on a solid broad foundation. A fine castle is not just a pile of bricks except that it is ... some piles are just a bit more orderly than others.
You are right, of course. I learned calculus too and it was easy because my teacher was good. He showed us how to do it, and we could do it.