Hello Greg, Saturday, November 26, 2005, 8:25:38 PM, you wrote: GW> Maybe this is a different topic, but exploring concurrency in Haskell GW> is definitely on my "to do" list, but this is really a bit of a puzzle. GW> One thing I've been thinking lately is that in functional programming GW> the process is really the wrong abstraction (computation is reduction, GW> not a sequence of steps performed in temporal order). But what is GW> concurrency if their are no processes to "run" concurrently? I've beren GW> thinking about action systems and non-determinism, but am unsure how GW> the pieces really fit together. for pure functional computations concurrency is just one of IMPLEMENTATION mechanisms, and it doesn't appear in abstractions DEFINITIONS -- Best regards, Bulat mailto:bulatz@HotPOP.com