The same thought occurred to me, with reference to exactly the same earlier piece. Economic computer models surely suffer from most of the problems that the climate models do. I kept expecting him to repeat the same critique and was a little surprised when he didn't. I'm willing to cut him a little more slack than you are, though; it's true that he might just be changing his tune to suit a predefined viewpoint, but I can think of other interpretations as well. Hopefully he'll write more about it and we can see.