I think looking at it as a 'failure' or 'deficiency' is the wrong mindset. OCaml makes a different tradeoff than Haskell. In exchange for not having ad-hoc poly

I think looking at it as a 'failure' or 'deficiency' is the wrong mindset. OCaml makes a different tradeoff than Haskell. In exchange for not having ad-hoc polymorphism, OCaml's functor system allows much quicker compilation and easier-to-understand type errors. Like everything in tech, it's a tradeoff.