system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is the real world significance/ benefit of calculus?

 I stink at math and would like to understand!
gpt
The most unhelpful, but most true answer: Basically everything.

Almost everything runs on, is modeled by, understood using calculus to some extent. Newton's second law, which is the basis of any kind of physical motion, and so used in all forms of engineering, mechanics, fluids, etc, etc, etc, is an equation in Calculus. The equations that allow us to discuss how electricity will flow, what magnetic fields will do, how light will propagate, are Calculus equations. Even many things in something that may seem like it has nothing to do with Calculus benefit from it, or discrete versions of it, particularly in Computer Science.

Your whole world runs on Calculus. If you take advantage of anything invented after 1700, then you're more than likely directly benefiting from Calculus. Calculus is an infection. We are in symbiosis with Calculus.

Calculus tells us how things change, and everything changes, so we need Calculus for everything.