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> Scala is ... quite complex Do you mean the Scala language is complex or the Scala libraries (not the Scala API) that people created (e.g. Cats, Akka ...) are complex? If you say that the Scala language is complex, could you give an example?

> Erlang's actor model ... is one of the greatest successes of language design to date IMO, if you work within 1 VM, the thread model is closest to us as almost all languages have it. How many languages the actor model is implemented in? I know Erlang, Scala. What else?