You can use FP in Java, or OO in Haskell. That doesn't mean that they're equally usable paradigms. I believe Scala had the goal of offering a high level of usa

You can use FP in Java, or OO in Haskell. That doesn't mean that they're equally usable paradigms. I believe Scala had the goal of offering a high level of usability for both FP and OO. It failed despite an admirable effort, because of an incredible amount of language complexity.