[jerf]

Are you asking for six pages of text? I'm probably the worst person in the world to say that to.

That said, I have no idea how you get "poor man's Erlang" out of this specific post. As a practical matter, Erlang is a standard dynamically-typed language in this matter; as a theoretical matter it has some limited support for protocols as used by things like gen_server but I don't think I ever saw a single use outside of the standard library, and I'm about 90% sure there's no implicit satisfaction of them; you must declare what you are implementing. It is irrelevant to my point as Python or Perl. We already know what this sort of dynamically-typed interface looks like in those systems, namely, "a lot less nice in practice than in theory but still useful enough most of the time". Nice for writing scripts, sufficient for reasonably-sized programs, not a sufficient foundation for an OS with Plan 9's level of aspirations.