The Paris Peace Conference was arguably the most complex negotiation ever undertaken. The principal product of the conference, the Treaty of Versailles, failed to accomplish any of the major goals of its framers. Relations between Allies and with the defeated enemies seriously deteriorated as a...

Group decision making is commonly used in juries, businesses, and in politics to increase the informational basis for a decision and to improve decision accuracy. Recent work on generalizing Condercet's jury theorem provides a compelling justification for using groups in this manner. But these...