> On Feb 12, 2017, at 4:51 PM, Jack Firth <jackhfi...@gmail.com> wrote:
>
> Somewhat reductionally, anyone can write a Racket library that implements a
> `#lang` with the semantics of any language on that list, so Racket therefore
> supports all paradigms. This doesn't really say anything useful.
If you want to use this form of a claim, you need to add a constraint:
subject to interoperability with existing Racket libraries without
recompiling them.
Google expressive power of programming languages. It is radically different
from Turing’s concept of universality, and I think more useful to developers.
If you accept this restriction on the mapping space between languages, you will
realize that even Racket can’t express it all.
— Matthias
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