I try to tackle some of these points in An Open Letter to the Erlang Beginner (or Onlooker) (http://ferd.ca/an-open-letter-to-the-erlang-beginner-or-onlooker.ht

I try to tackle some of these points in An Open Letter to the Erlang Beginner (or Onlooker) (http://ferd.ca/an-open-letter-to-the-erlang-beginner-or-onlooker.html http://ferd.ca/an-open-letter-to-the-erlang-beginner-or-onlo...). As for the nine nines (99.9999999%) in the Ericsson AXD 301 ATM switches, Please note that this is not an indication that none of the components in an Erlang-based system failed, but that a general switch system was available 99.9999999% of the time, planned outages included. This is partially because Erlang is built on the notion that a failure in one of the components should not affect the whole system.