even if no one understands a piece of art
it still is art.
give an example
ha ha.. surely almost any piece of Art is not truly understandable... at
least not in a complete transference of meaning from the Artist to the
Viewer.
Without reading up on it, do you understand Andres bricks, De Vinci's Mona Lisa, Lynches Inland Empire... ?
Art is when the Artist deems it to be thus... that is it! (maybe someone else can deem it Art too)