Synthese 196 (10):4033-4058 (2019)

Mattias Skipper
National University of Singapore
The debate on the epistemology of disagreement has so far focused almost exclusively on cases of disagreement between individual persons. Yet, many social epistemologists agree that at least certain kinds of groups are equally capable of having beliefs that are open to epistemic evaluation. If so, we should expect a comprehensive epistemology of disagreement to accommodate cases of disagreement between group agents, such as juries, governments, companies, and the like. However, this raises a number of fundamental questions concerning what it means for groups to be epistemic peers and to disagree with each other. In this paper, we explore what group peer disagreement amounts to given that we think of group belief in terms of List and Pettit’s ‘belief aggregation model’. We then discuss how the so-called ‘equal weight view’ of peer disagreement is best accommodated within this framework. The account that seems most promising to us says, roughly, that the parties to a group peer disagreement should adopt the belief that results from applying the most suitable belief aggregation function for the combined group on all members of the combined group. To motivate this view, we test it against various intuitive cases, derive some of its notable implications, and discuss how it relates to the equal weight view of individual peer disagreement.
Keywords Group disagreement  Peer disagreement  Belief aggregation  Judgment aggregation  Collective epistemology
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DOI 10.1007/s11229-017-1636-0
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References found in this work BETA

Epistemology of Disagreement: The Good News.David Christensen - 2007 - Philosophical Review 116 (2):187-217.
Reflection and Disagreement.Adam Elga - 2007 - Noûs 41 (3):478–502.
Peer Disagreement and Higher Order Evidence.Thomas Kelly - 2010 - In Alvin I. Goldman & Dennis Whitcomb (eds.), Social Epistemology: Essential Readings. Oxford University Press. pp. 183--217.
Experts: Which Ones Should You Trust?Alvin I. Goldman - 2001 - Philosophy and Phenomenological Research 63 (1):85-110.

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