Sellars gives a unified treatment of the alethic, causal, and deontic modalities as (once again) material mode metalinguistic speech expressing the inferential commitments and priorities embedded in the language.  Thus, using modal language in talking about the world and our agency in the world does not commit us to recognizing independent, metaphysically real necessary connections or the existence of moral facts independent of moral agents.  It does commit us to prescribing and proscribing certain linguistic or conceptual transitions, including language-exit transitions that emerge in action.  As Robert Kraut describes it, “metaphysical claims that initially appear to state language-world connections—claims about the relation between predicates and properties, for example—are, on Sellars’s theory, construed as normative claims about appropriate linguistic usage” (Kraut 2010: 601).