This article addresses the ongoing debate between pluralistic and monistic approaches to dealing with critical disagreement. I return to the theory of world hypotheses advanced by Stephen C. Pepper, an understudied figure in aesthetics and pragmatism, to enunciate a version of pluralism that centers on the nature of critical evidence and its functioning in social settings of argument. I argue that Pepper's expansive philosophy holds interesting implications for what can be called the metaphysics of criticism, a point missed by partisans (...) of standard views of pluralism and monism. Building on his analysis of equally autonomous (but noncommensurable) world hypotheses, this study enunciates an explicit notion of rhetorical pluralism that goes beyond simple relativism. This account can be labeled “evidentiary pluralism,” since it internalizes standards for evaluation to specific worldviews and recognizes their changeable nature in the context of critical disagreement. (shrink)