"Contrary to the old laws of information theory, it was common for us to find that more information was received than had been sent. I have almost never had that experience with anyone else. If you have not had it, you don't know how marvelous collaboration can be ..."That is from a post I did sometime back. It is a quote by Daniel Kahneman talking about his work with Amos Tversky. I was reminded of this yesterday when talking to Michael Woolcock about his collaboration with Lant Pritchett - in preparation for an interview about a paper Michael recently wrote with Lant. I will post the interview in the next couple of days, and I think you will like it.