Alethic Functionalism and the Norm of Belief

A common objection to deflationism is that it is unable to account for the normative import of truth as a norm for assertion and belief. Most of the versions of truth pluralism agree, against deflationsim that the normativity of truth is a substantive feature of it. Alethic functionalism, as defended by Lynch (2009) includes it among the platitudes characteristic of the role of truth which are manifested differently in various domains. But I argue that this multiple manifestation is incompatible both with the uniformity and the substantiveness of the norm of truth for belief. Either alethic functionalism has to reject the first, but then it cannot maintain the view that the same norm of truth applies across domains, or it gives up the second, and comes dangerously close to deflationism.