Art: The details ARE the art, in many cases. I was fortunate enough to see Mondrian's Composition With Lines In Black and White in person, one day, and it was one of the most amazing paintings I have ever seen.
When you get up close to it, you see that it has been tweaked, edited, modified, and changed literally hundreds of times. There is not a single brush stroke on this 4-foot-wide disc that has not been altered multiple times.
Apparently this hung in his studio for something like 17 years. He would touch it up, change it, modify every now and then, when something looked "wrong" to him.
The piece is considered incomplete... a work in progress... which I find incredibly poetic.