Against Grounding Trinitarianism

Christian metaphysics advances a surprising thesis about the nature of fundamental reality: the fundamental level of reality is triune (in some sense). Certain Christian traditions maintain that there is a hierarchical structure within the trinity, and recently it has been proposed that such relations should be explicated in terms of the notion of metaphysical ground. This paper is a systematic exploration of the viability of a ground theoretic account of this conception of fundamental reality. We argue for two claims. First, the only adequate ground theoretic accounts must involve laws of ground and must take them to play distinctive explanatory roles. Second, taking the laws of ground to play these distinctive explanatory roles raises a dilemma: either fundamental reality isn't triune in the way demanded by the Christian account or it makes poor predictions about the modal status of certain facts about the laws of ground.