 Secondly, although in introducing the notion of realism above mention is made of objects, properties, and facts, no theoretical weight is attached to the notion of a ‘fact’, or the notions of ‘object’ and ‘property’. To say that it is a fact that the moon is spherical is just to say that the object, the moon, instantiates the property of being spherical, which is just to say that the moon is spherical. There are substantial metaphysical issues about the nature of facts, objects, and properties, and the relationships between them (see Mellor and Oliver 1997 and Lowe 2002, part IV), but these are not of concern here.