I would say that Alan Kay was trying to create something like Erlang, if you look at the early plans, and the terminology like "messages". But due to hardware l

I would say that Alan Kay was trying to create something like Erlang, if you look at the early plans, and the terminology like "messages". But due to hardware limitations of the time, he ended up with a much less capable system, lacking the asynchronicity and heterogeneity. Erlang appeared 15 years later, and was / is quite successful in certain niches, more recently also as Elixir.