I haven’t yet heard Matt’s talk but I did listen to Marc David’s intro to the conference. I suspect that the common ground Matt referred to is the important part the mind/mental state (and probably stress) plays with regards to food and metabolism. Marc David knows that all these people have different ideas and often directly conflicting ones, my take away was that his goal was not to create a definitive answer but to help forward the discussion.
I listened to some of the speakers yesterday and was able to pick out some interesting tidbits even though I disagreed with some of the speakers basic assumptions. I’m certainly not going to spend the money to purchase these but I’ll listen to the ones that most interest me as I’m going about my housework this week.