We examine the theory of the set theoretic multiverse proposed by Joel David Hamkins, whose purpose is to address philosophical questions about independence questions in standard set theory, but which when spelled out formally has some of the flavor of an alternative set theory. A set theoretic Platonist might say about the Continuum Hypothesis (CH) that, since there is “of course” a single universe of sets, CH is either true or false in that world, but that we cannot determine which of CH and \