EXCERPT ROBIN MACKAY: Matthew, listening to your presentation, I was immediately struck by some remarkable convergences with what Elie had said earlier. ELIE AYACHE: I was amazed by the similarity. To be sure, Matthew’s was a paper about the market, in my terms. The art market has always fascinated me in terms of where does value lie, etc, and I think there are a few books already that attempt to address this from a quantitative point of view…