 When the various agents in a community may widely disagree over the non-evidential plausibilities of hypotheses, the Bayesian logic of evidential support may represent this kind of diversity across the community of agents as a collection of the agents’ vagueness sets of support functions. Let’s call such a collection of support functions a diversity set. That is, a diversity set is just a set of support functions \(P_{\alpha}\) that cover the ranges of values for comparative plausibility assessments for pairs of competing hypotheses