A friend of mine, Harry Pierson, is a great thought-provoker. I'm a big fan of thought provokers. Pat Helland is another, as are David Chappell and Martin Fowler. Harry has been asking me to make sure we build a layer of indirection into our message addressing system (which I agree with, but haven't been really thinking about).

So this morning, as I was just waking up (literally), I thought about my recent post on Event Driven Architecture and whether to use events or documents. Both models share a key behavior: send out a message without any idea of who will