I think, a better answer (for now) would be, calculus is hard, some people get it, some don't, we don't know which. So, we have to try all of you in the hopes h

I think, a better answer (for now) would be, calculus is hard, some people get it, some don't, we don't know which. So, we have to try all of you in the hopes humanity will get enough people out of that practice that understand it and can further fields that rely heavily on calculus.