[jose_zap]

> Because performance problems are particularly hard to solve in Haskell due to its high level of abstraction.

Does not match my experience. Haskell typically compiles to quite performant code, at least for all the cases that I’ve used it for.

Then few times I had to optimize anything for performance, it did not feel different than other languages. It was in almost every case about the architecture of the code and not something to do with the language itself.