Category Theory is Overrated for Programmers. Study Abstract Algebra Instead

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For some reason, when I was a younger programmer, I developed the belief that I needed to learn Haskell and Category Theory to become a better programmer. It would be a long, arduous challenge, but then one day, I’d finally get it. I’d grok the pure math of function composition and use it to design perfect systems, entirely free of bugs. Once I learned what a monoid in the category of…

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