erlang

I recently started looking into the erlang language. It is a functional language somewhat like lisp, but concurrency is built into the language in a very fundamental way. Has anyone out there worked with erlang before? Any opinions on the language?

I recently started looking into the Greek language. It is a moon language somewhat like Russian, but mathematical symbols are built into the language in a very fundamental way. Has anyone out there worked with Greek before? Any opinions on the language?