Standing and Its Origins: The Phenomenological Foundation of Second-Personal Obligation

Stephen Darwall's second-person standpoint is among the most powerful accounts of moral obligation in contemporary moral philosophy. By showing that obligation is irreducibly second-personal - arising from reciprocal accountability between persons who recognize one another as equals with standing to make demands - Darwall identifies the structure that earlier ethical theories presupposed without articulating. Yet Darwall's account contains three explanatory gaps that its own internal commitments cannot close: it does not explain (i) why human beings come to experience others as having standing in the first place; (ii) why asymmetric need acquires normative force within the second-personal frame; or (iii) what makes second-personal address motivationally potent rather than merely formally valid. This paper argues that these are not peripheral lacunae but foundational presuppositions - claims that Darwall's structural account must assume in order to proceed. The Natural Moral Sense (NMS) framework, a phenomenological-realist account of moral obligation's origin, fills all three gaps by providing the developmental and phenomenological account Darwall's analytical framework requires but cannot supply from within its own resources. The paper advances an asymmetric presupposition thesis: NMS is explanatorily prior to Darwall's structural account, which is practically indispensable but explanatorily secondary. This is not a critique of Darwall's achievement but a specification of its foundations. The paper also distinguishes this foundational dependence from the weaker 'scope limitation' reading, on which NMS and Darwall simply address different questions, and responds to the objection that Darwall's project is insulated from phenomenological critique by its analytical character.