At a recent conference, I had one of those 'aha!' moments when some existing pieces together to give a new insight. Sometimes, a glimpse of greater clarity sheds light on where we are and where we're going. In this particular case, I'd been wrestling with concurrency issues. All concurrent software needs to share state. Obviously, if this were not true, it would just be a bag of disjoint stuff otherwise. Sharing state is where the fun starts.