Alethic Pluralism and the Norm of Truth

Functionalism about truth, especially in the form of "alethic functionalism" defended by Lynch 2009, counts the norms of truth for belief (NT) as a truism , among others which functionnally define truth. I argue that Lynch cannot take it as a truism, since it has many conflicting interpretations and that the ambiguity between a conceptual reading and a property reading of the truism create difficulties for alethic functionalism.