I don't think you need calculus to calculate right amount of fence for your garden.
> Since math modeling is everywhere in "modeling" industries like engineerings, financial-ish jobs and othet
In other words, certain career choices, as the OP says.
> Since math modeling is everywhere in "modeling" industries like engineerings, financial-ish jobs and othet
In other words, certain career choices, as the OP says.
(Also, while it might not be the tools needed for the average homeowner, there are plenty of optimisation problems similar to "how much fence do I need" which are most easily solved by solving the Euler-Lagrange equations)
While it's always better to work out the numbers if possible, sometimes it isn't possible and people get trapped trying.