This reminds me of a (minor) problem in Anglo-Saxon studies. They wrote a lot of riddles, usually where the answer is a pun or some diversion--a perfect example goes something like "I sit near a man's belt belt and then you jam me into an orifice" and the answer is a key.
One of the great "unanswered" riddles goes something like "after a battle I put myself down onto myself and then I myself sit on myself." Nobody could figure it out for centuries because (well, largely because it was kind of unrewarding to devote brain power to it) they were looking for a concept to satisfy all three premises in modern English (or German I guess). What they needed to look for was an Anglo-Saxon word, in this case
sedg which means a sword, and by extension a man of fighting age, and also unmown grass (cf. "blades of grass"). See, the Old English riddle needed an answer in Old English.
Likewise, looking at art in terms of what utilitarian value it can offer to collective society (as, say, Plato does) will make art look frivolous and even damaging (as, say, Plato concludes). But art is not a utilitarian thing and neither its creation nor its consumption arises from a utilitarian impulse in people. Attempting to assign utilitarian value to it (to locate "enlightenment" as a discreet reward) is frustrating and hopeless because it's not there. Since empirically we can see that art has no small significance, it stands to reason that art has a value that is not utilitarian.
(As an aside, nobody wants utilitarian art. For a look at the great experiment in utilitarian art, check out http://en.wikipedia.org/wiki/Art_of_the_Third_Reich vs. http://en.wikipedia.org/wiki/Degenerate_Art_Exhibition and the numerous, numerous works of art history on their respective significance.)
I get it though. It's definitely a question I used to struggle with, until I read some piece by Stanley Fish that might well have been this one: http://opinionator.blogs.nytimes.com/2008/01/06/will-the-humanities-save-us/
Whence I quote:
via Stanley Fish
It is not the business of the humanities to save us, no more than it is their business to bring revenue to a state or a university. What then do they do? They don’t do anything, if by “do” is meant bring about effects in the world. And if they don’t bring about effects in the world they cannot be justified except in relation to the pleasure they give to those who enjoy them.
I admit that that's a little unsatisfying because it gives people a license to say and do stupid, wasteful things with their time. (I'm looking at you, Hearst.) It grieves me every time I go near Wikipedia and the article of the day is on Final Fantasy XIII--or when the article on "Volsung" includes a stray "in pop culture" entry about the Dragon Priest in Skyrim who has no backstory or character but shares a name with the mythico-literary figure, and some guy ran to Wikipedia to make note of it.
But the issue is with individuals, not the concept of art.
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Willis, it seems like every other time you post, I need to look up a word that's in the OED or Urban Dictionary but not both.
-Mimir