How does a department store bathroom janitor benefit from multivariable calculus, complex analysis, partial differential equations, linear algebra, probability, vector fields, transformations of time to frequency, ad infinita?

He goes on to become something other than a janitor - at least that worked for me.

That’s great! But we still need janitors. and if everyone knows these things, then knowing them isn’t exactly a pathway upwards. So let’s ask again, what do they do with it.

I'd love to hear more about your story!