 Early exponents of grounding within analytic philosophy date from the 1960s (Bergmann 1961: 229, Hochberg 1967: 416–7). Recently, grounding has been explained in a variety of different ways (Correia and Schnieder 2012, Raven 2015). But, broadly speaking, we can distinguish between two conceptions which assign different logical forms to grounding statements: (1) the “predicate” or “relational” view whereby grounding statements are assigned the logical form “x grounds y” where “x” and “y” mark singular term positions and the verb expresses a relation; (2) the “operator” view whereby the canonical form of a grounding statement is characterised by a sentence operator. So statements about something grounding something else have the logical form “p because q” where “p” and “q” mark positions for sentences. The predicate view of grounding is held by, amongst others, Schaffer 2009, Audi 2012, Raven 2012; the operator view is advanced by Fine 2001, 2012, Schnieder 2006a, Correia 2011 [2014]. (A third approach, owed to Mulligan 2007, recognises a plurality of different forms of grounding statements.) The choice between (1) and (2) is often made either on the basis of an assessment of the logical form of typical grounding claims, or on the basis of ontological commitment, for example, the claim that the operator approach to grounding is “ontologically neutral” because (allegedly) operators don’t stand for anything as (allegedly) predicates do (Correia 2010: 254, Fine 2012: 47).