And calculus is a lot of symbols signifying the infinitesimal whatever.

Spengler made the case that mathematics is more cultural, cyclical, than progressive (mankind getting smarter and smarter). He argued the Greeks, for example, were fully capable of doing calculus but didn't see the practical need.

I challenge you to write an article explaining why modern society would NOT exist without calculus. That is, if most of mankind was wiped out by a cosmic event, what problem MUST we use calculus for to feed, cloth and house us?

I'd want to see the equations in this article used in real-life ways.

Must we have it for steam engines, for cars, electricity? Or, if calculus was outlawed, what couldn't you do?

I'd love to read that story. It would allow me to make it to the end of this one ;)