We can imagine a metaphysician making a grand claim about this list. He could say that there really are things in each of those eight categories. Furthermore, he could say, there is no redundancy in the list: there is nothing that belongs in more than one of the categories. Finally, this metaphysician could claim that the list is complete: everything that exists falls into one or another of the categories in the list. In this way our metaphysician would have endorsed a fairly robust ontological scheme.[2]