  Defenders of historical definitions have replies. First, as regards autonomous art traditions, it can be held that anything we would recognize as an art tradition or an artistic practice would display aesthetic concerns, because aesthetic concerns have been central from the start, and persisted centrally for thousands of years, in the Western art tradition. Hence it is an historical, not a conceptual truth that anything we recognize as an art practice will centrally involve the aesthetic; it is just that aesthetic concerns that have always dominated our art tradition (Levinson 2002). The idea here is that if the reason that anything we’d take to be a Φ-tradition would have Ψ-concerns is that our Φ-tradition has focused on Ψ-concerns since its inception, then it is not essential to Φ-traditions that they have Ψ-concerns, and Φ is a purely historical concept. But this principle entails, implausibly, that every concept is purely historical. Suppose that we discovered a new civilization whose inhabitants could predict how the physical world works with great precision, on the basis of a substantial body of empirically acquired knowledge that they had accumulated over centuries. The reason we would credit them with having a scientific tradition might well be that our own scientific tradition has since its inception focused on explaining things. It does not seem to follow that science is a purely historical concept with no essential connection to explanatory aims. (Other theorists hold that it is historically necessary that art begins with the aesthetic, but deny that art’s nature is to be defined in terms of its historical unfolding (Davies 1997).) Second, as to the first artworks, or the central art-forms or functions, some theorists hold that an account of them can only take the form of an enumeration. Stecker takes this approach: he says that the account of what makes something a central art form at a given time is, at its core, institutional, and that the central artforms can only be listed (Stecker 1997 and 2005). Whether relocating the list at a different, albeit deeper, level in the definition renders the definition sufficiently informative is an open question. Third, as to the Euthyphro-style dilemma, it might be held that the categorial distinction between artworks and “mere real things” (Danto 1981) explains the distinction between experts and non-experts. Experts are able, it is said, to create new categories of art. When created, new categories bring with them new universes of discourse. New universes of discourse in turn make reasons available that otherwise would not be available.  Hence, on this view, it is both the case that the experts’ say-so alone suffices to make mere real things into artworks, and also true that experts’ conferrals of art-status have reasons (McFee 2011). 