> If you think calculus is not important to software development than you are not bothering to look. Just a few examples:
Half of what you listed isn't really Calculus at all: for comparison my highschool taught functions, continuous vs discontinuous, rates of change, and topographic maps in Math classes which happened years before taking Calculus. Then the Calc class was like 70% memorizing "whats the integral of cosecant?", was which I think we should be able to agree is absurdly useless even for people who actively work in a math-heavy field.
I suspect this form of calculus is what people are responding to when they say calc is useless; they should be teaching the things you're saying (including how to think about functions) and e.g. introducing Euler's method getting into what happens when your step size become arbitrarily small are all useful things to a broader set of people, but the actual implementation of Calculus classes in practice is instead entirely useless trivia that provides almost no insights if you wanted to do any of the things in your comment.
Half of what you listed isn't really Calculus at all: for comparison my highschool taught functions, continuous vs discontinuous, rates of change, and topographic maps in Math classes which happened years before taking Calculus. Then the Calc class was like 70% memorizing "whats the integral of cosecant?", was which I think we should be able to agree is absurdly useless even for people who actively work in a math-heavy field.
I suspect this form of calculus is what people are responding to when they say calc is useless; they should be teaching the things you're saying (including how to think about functions) and e.g. introducing Euler's method getting into what happens when your step size become arbitrarily small are all useful things to a broader set of people, but the actual implementation of Calculus classes in practice is instead entirely useless trivia that provides almost no insights if you wanted to do any of the things in your comment.