The valuable part of calculus to me was understanding the concepts of limits, differentiation, integration, and a tiny bit of differential equations. Learning

The valuable part of calculus to me was understanding the concepts of limits, differentiation, integration, and a tiny bit of differential equations. Learning how to actually solve integrals or differential equations was useless other than it teaching me more about calculus and how it is useful. For calculations in practice I will turn to wolfram alpha, but it has some value to understand what wolfram alpha is doing under the hood. I think a calculus course whose tests defocusses calculations might be very valuable for practically minded people. Knowing to think about derivatives is much more useful in practice than actually being able to calculate a derivative.