I think that's fair to a certain extent - a queue is the simplest form of message passing or work distribution. There are many other data structures that have b

I think that's fair to a certain extent - a queue is the simplest form of message passing or work distribution. There are many other data structures that have been developed that work well with multiple threads. I think what _is_ out of vogue is just protecting an arbitrary data structure with a mutex and calling it thread safe.