 A similar conclusion is defended in chapter 3 of the first volume of The Nature of Existence. McTaggart there raises the following worries about using ‘inductive methods’ to arrive at metaphysical results. First, McTaggart claims that the rationality of using induction in general is questionable. According to McTaggart, we need an argument for the rationality of induction, and such an argument will not be an inductive argument. Second, McTaggart raises two specific worries about using inductive arguments to derive metaphysical claims about reality as a whole. The first specific worry is that, since there is only one entity that is reality as a whole, we cannot use an inductive argument to determine the features of this entity. (McTaggart appears to conceive of inductive arguments as exemplifying the pattern there are many As and each observed A is F, so every A is F.) The second worry is that, since there are infinitely many existing entities (a claim for which McTaggart will argue for later in the Nature of Existence), and we observe only finitely many of them, any inductive argument moving from claims about the features of what we observe to the features of existent entities in general will be dubious.