Yes, I suspect it is a pitfall of a multi-paradigm language that cannot assume so much about code in order to optimize. Opinionated functional languages (ie clo

Yes, I suspect it is a pitfall of a multi-paradigm language that cannot assume so much about code in order to optimize. Opinionated functional languages (ie clojure, haskell) can have a lot more guarantees about what is going on in order to optimize all those function calls, lexical bindings, etc.