Erlang pretty much blows Node.js out of the water, in terms of sophistication of concurrency primitives (to mention one thing). Erlang is really just syntax on top of BEAM, which is pretty tailored to the language (you'll notice Elixir and Erlang share identical types etc).
Elixir adds some nice metaprogramming features, and I love that it exists. Erlang is used for a lot of Important Things in production, and its value to many developers is stability and fault tolerance. Erlang moves slow. It's nice to see a sister language that can more rapidly develop new language features (maybe some of the goods ones will get added to Erlang (:
Joe Arms post about Elixir is pretty interesting [1]
Elixir adds some nice metaprogramming features, and I love that it exists. Erlang is used for a lot of Important Things in production, and its value to many developers is stability and fault tolerance. Erlang moves slow. It's nice to see a sister language that can more rapidly develop new language features (maybe some of the goods ones will get added to Erlang (:
Joe Arms post about Elixir is pretty interesting [1]
[1] http://joearms.github.io/2013/05/31/a-week-with-elixir.html