You could easily use the reasoning from calculus in your everyday life. For example, understanding even just the basic gist of stokes' theorem could be useful

You could easily use the reasoning from calculus in your everyday life. For example, understanding even just the basic gist of stokes' theorem could be useful just as a basic cognitive tool. But a lot of people are never challenged to think about this. Like imagine not having any intuition for flux. There are people who have none. That's cognitive impairment if you ask me.