Abstract

This work sets out to present how the notion of delusion may be understood (and extended) within the semantic framework of Robert Brandom's inferentialism. The mechanisms of reliability and community‐oriented proprieties, among others, provide inferentialists with effective tools for understanding commitments (and so beliefs) in communities. These tools may be used to describe and assess both commitments that we might consider sound and commitments that we might consider delusional, both in terms of how they arise and in terms of how they may be reinforced. Delusions are accordingly rendered in perspectival and normative terms, which is elaborated through a number of examples. The picture of how a delusional commitment may be understood, how it may be reinforced, and its character as community internal or external provide some interesting perspectives on delusions in shared social contexts, as well as how they may originate intractable conflicts and disconnects between sub‐groups within a broader linguistic community.