I find calculus to be a very useful set of mental models for framing problems, even if I'm not doing actual calculations with it. Understanding things like cont

I find calculus to be a very useful set of mental models for framing problems, even if I'm not doing actual calculations with it. Understanding things like continuity, convergence, boundary conditions, gradients, etc... Almost everything you learn in a calculus course is a general problem-solving technique. (I'll say the same thing about Topology.)