Hal of course was in top form, here is the audio and transcript. Excerpt: COWEN: Why doesn’t business use more prediction markets? They would seem to make sense, right? Bet on ideas. Aggregate information. We’ve all read Hayek. VARIAN: Right. And we had a prediction market. I’ll tell you the problem with it. The problem […] The post My Conversation with Hal Varian appeared first on Marginal REVOLUTION.