On 4th June in Pembroke College we ran a workshop for those interested in Bayesian approaches to agreement and disagreement. Richard Bradley of L.S.E presented his paper comparing deliberation and aggregation as ways of dealing with disagreement and producing collective opinion.
Robin Hanson of George Mason University presented his recent research on disagreement, in which he has been extending Aumann's theorem to conclude that rational disagreement requires origin disputes. Christian List and Franz Dietrich of L.S.E. presented the paper they have written with Richard Bradley "Aggregating Causal Judgments". The occasion was a very interesting exposure of the Bayesian approach to the issue and provoked considerable discussion among the participants.