My bringing up of Haskell and friends wasn't there to counter, but to merely observe that there are better things surrounding type systems than what is provided by even Lisp. And I wished to add that if one is to look for inspiration on building expressive type systems, then Haskell should be the place to look, not Lisp.

I also wanted to provide Haskell as a kind of system which provides an inference engine that is much stronger than Lisp's. I don't want anyone to get the idea that Lisp implementations' inference engines is even commensurable to what exists elsewhere.

It is relevant to the discussion as an example.