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I don't want to be overly rude, but this is nonsense. The reason to learn calculus is that it's incredibly useful in several domains and never learning it prevents you from become a skilled practitioner in those domains which in turn reduces your future earning potential.

Basically: https://www.smbc-comics.com/comic/why-i-couldn39t-be-a-math-...

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That is a good comic. But I am not sure "reduces your future earning potential" is really right. If you are going for future earning potential, then there are other things. Probably along the lines of - learn to code - find a way to migrate to the US - live in SF/NYC - learn algorithms and data structures - learn leet code - emotional control/resilience for putting up with those kinda jobs ... etc

I reckon there are plenty of PhDs earning less than $100k around the world, who know calculus and matrix algebra like their ABCs.

Everything can be incredibly useful in several domains, but we don't teach everything. Instead, people learn what they need when they start working in that domain.

The point of the article is that calculus is not taught because it might be incredibly useful for a small percentage of students, but because it measures their ability to pick up a hard subject and ace it.

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