 It may be objected, as to the preceding theory, that van Inwagen’s relative identity trinitarianism is unintelligible. Merricks argues that this problem is more acute for van Inwagen than for Geach, as the former declines to adopt Geach’s claim that all assertions of identity, in all domains of discourse, and in everyday life, are sortal-relative (Merricks 2006, 302–4).