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Re:On Marketing Haskell by tome on Monday June 01, 2020 @04:11AM (#23376300)
> What software issue does category theory and abstract algebra solve?

They address (not solve) the problem of lack of code reuse. I have never seen a language where I can put to use so much code written elsewhere without knowledge of my particular use case. They also address the problem of reasoning about the behaviour of code being difficult.

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