you can do harder things
When a precocious yet nonconformist teenager asks why they need to learn calculus, what should you say? You know they will never use it in adulthood, outside of certain career choices. You could say, “It’ll help you get into college,” but then they’re left wondering why college cares if you know calculus. And once they’re in college, maybe you could say, “To get a good job,” but why would a potential hirer care how you did in multivariate calculus if your job doesn’t require any knowledge of calculus?...