It is not just "matters". It is a deeply-researched and well-engineered explicitly concurrent programming language by smart and passionate people. It is a very rare example of first-class project, compared to the common nonsense, like Java or, god forbid, NodeJS.)
If it is not that popular (which is rather good) it is not a language's fault. It is due to inability to acquire and maintain an appropriate mindset.
If it is not that popular (which is rather good) it is not a language's fault. It is due to inability to acquire and maintain an appropriate mindset.
btw, there is a nice lecture - http://www.youtube.com/results?search_query=Erlang%2BJoe%2BA...