 One might, of course, reject the idea that there are some metaphysically privileged kinds in the world. But here it is important to distinguish between internal and external questions concerning a system of categories. We can approach category theory externally in which case we would ask questions about the status of any system of categories. So, for instance, we could ask whether any system of categories must exhibit some kind of dependency on the mind, language, conceptual schemes, or whatever. Realists will answer this question in the negative, and idealists of one stripe or another in the affirmative. In addition, we can ask about our epistemic access to the ultimate categories in the world. And we can adopt positions ranging from a radical skepticism about our access to categories to a kind of infallibilism about such access.