Disimplicature

Speranza

Conceptual role semanticists argue that concepts are individuated in terms of their roles in cognition. Some prominent conceptual role semanticists argue for the further claim that concepts are individuated in terms of their rational roles in cognition. 

This further claim places substantive normative constraints on concept-constitutive roles. 

Grice argues that conceptual role semanticists can and should resist the claim that conceptual roles must be specified in inherently normative terms.