 As Rosen notes (2010), however, these principles rule out so-called Moorean connections, grounding connections that aren’t mediated by essential truths. If, say, non-reductive physicalism about the mental is best formulated in terms of Moorean connections as Rosen suggests, then the above grounding-to-essence principle has the undesirable result of ruling out what is arguably the dominant view concerning the metaphysics of mind.