[carapace]

Like I said, I'm not a Forth person, but if there were any around to settle it I would bet you all those things have several implementations (I do know that many people have written OOP and OOP-like things in Forth.)

> I mean the same functionality, flexibility and level of convenience.

I feel like you're missing the point (although there's such a thing as ANSI Forth so you are in good company). In Forth re-implementing an exact model of some other system (like CLOS, which is, of course, very nice, I don't need to tell you) is a non-goal (you could do it but it would be kind of a stunt.)

The fundamental advantage of concatinative languages over pretty much all the other PLs and paradigms (except maybe Smalltalk and APL) is that they permit parsimony of code, what some have called "semantic compression", by refactoring better than other languages. One of the reasons Lisp is so powerful is that it's also pretty good for refactoring.

I could prove this using Category theory (and God willing someday I will), concatinative languages are closer to the metal (the "metal" in this case being, not the hardware, but the conceptual essence of programming and logic.)

Anyway, well met, and have a good week. :)