Only that Carl took part in research into the model a few decades ago [1] when there was no Erlang, according to wikipedia. [1] Carl Hewitt; Peter Bishop & Ric

Only that Carl took part in research into the model a few decades ago [1] when there was no Erlang, according to wikipedia. [1] Carl Hewitt; Peter Bishop & Richard Steiger (1973). "A Universal Modular Actor Formalism for Artificial Intelligence". IJCAI.