A range of related topics are gathered together under the title "The Definition of Art." These include: (1) metaphysical questions, such as "Is there a set of necessary properties whose possession is conjointly sufficient for a candidate to qualify as an artwork?" and, if so, "What are they?"; and (2) the epistemological issue of how we go about establishing that a candidate is an artwork. Traditionally the default assumption among many philosophers has been that there are necessary and sufficient conditions for classifying things as artworks; that these conditions can be assembled into a real or essential definition of art; and that the application of the aforesaid definition provides us with the means to establish that this or that candidate is an artwork. The trick with this approach is to specify, successfully, the pertinent necessary and sufficient conditions.

Needless to say, this enterprise has turned out...