Haskell uses some concepts from category theory, but even there (as people pointed out in a Haskell thread a while ago) it is not actually necessary to understa

Haskell uses some concepts from category theory, but even there (as people pointed out in a Haskell thread a while ago) it is not actually necessary to understand the category theory behind them. E.g. to be able to use monads. If category theory isn't even helpful for Haskell programming, we can be pretty sure that it doesn't help at all with more common languages.