Commentary Philosophy is littered with questions that are easily stated but difficult to answer. What is—well, you choose: What is justice? What is knowledge? What is virtue?  What is love? Many such questions are probably unanswerable or at least unanswerable in any way that is profitable. Any answer that is accurate is also likely to be so general as to be vacuous. That certainly seems to be the case with another popular “What is . . .?” question, namely “What is art?” It might once have been possible to answer this question with a fair degree of accuracy. These days, however, Andy Warhol seems to have preempted definition with his remark that “Art is what you can get away with.” Certainly, his own career was a testimony to the force of that sentiment. In other words, these days the question “What is art?” mark a place on the intellectual map …