 Pettit draws on the literature on judgment aggregation (E.g. Kornhauser and Sager, 1986; List &amp; Pettit, 2002). Here’s a version of the sort of case Pettit has in mind: several colleagues (A, B, and C) heading to the APA convention in Chicago have to decide whether to take the El (train) from the airport. An affirmative judgment regarding each of the following considerations or “premises” is necessary for the decision/conclusion to get on board: whether the train is safe enough, whether it’s quick enough, and whether it’s scenic enough (e.g. whether it’s okay that they’ll miss out on a view of the lake). Let us also suppose, given appropriate background assumptions, that the satisfaction of these conditions amounts to a conclusive reason to take the train. Finally, suppose the group arrives at judgments regarding the premises by majority vote as follows: 