 Jury theorems matter more indirectly to social epistemology in groups, especially belief revision under peer disagreement. How ought one revise one’s beliefs when learning the beliefs of others? Many have argued that the number of peers, their competence and their independence all matter (Elga 2010; Kelly 2011; Lackey 2013). Barnett (2019), for example, discusses peer disagreement with a “group representative” who adopts the group’s majority view. Jury theorems can help approach such questions systematically.