There must be. Look at our telephone system. It's practically
crash proof. Why? Erlang. It handles concurrency processing
perfectly. None of the processes interfere with each other. They
pass MESSAGES to each other, but they each retain their
identities.
Independence of identity while only passing messages is the key.
As soon as you get statistics involved, and people getting
lumped together as numbers that lose their individual
identities, well, then there's problems.