Abstract
A platitude in epistemology is that an individual’s belief does not qualify as knowledge if it is true by luck. Individuals, however, are not the only bearers of knowledge. Many epistemologists agree that groups can also possess knowledge in a way that is genuinely collective. If groups can know, it is natural to think that, just as true individual beliefs fall short of knowledge due to individual epistemic luck, true collective beliefs may fall short of knowledge because of collective epistemic luck. This paper argues, first, that the dominant view of epistemic luck in the literature, the modal view, does not yield a satisfactory account of lucky collective beliefs. Second, it argues that collective epistemic luck is better explained in terms of groups lacking (suitably defined) forms of control over collective belief formation that are specific to the different procedures for forming collective beliefs. One of the main implications of this, we will argue, is that groups whose beliefs are formed via internal deliberation are more vulnerable to knowledge-undermining collective luck than groups that form their beliefs via non-deliberative methods, such as non-deliberative anonymous voting. The bottom line is that the greater exposure to knowledge-undermining luck that deliberation gives rise to provides a reason (not a conclusive one) for thinking that non-deliberative methods of group belief formation have greater epistemic value.
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