I read this somewhere I thought that it applied here. Visual art is communication - a visual language. There is a sender and a receiver. The artist is the originator of a concept or message. The viewer is the receiver of that message. They must both understand the same language for a dialog to take place. Intent is not enough. The artist can have all the intent in the world that what she/he presents is art but if that message (intent) isn't understood by the viewer than that piece isn't art to that viewer. To someone else who understands the artist's language the communication can take place. An understanding of the intent through the visual language is the key to the communication. The viewer must take responsibility to learn the language of artists and not just blame the artist if they don't "get it". I think it was Duchamp's intent with "The Fountain" to pose this very question. "Is this urinal art if I say it is?" Obviously it is because we (some not all) understand his message and are still discussing it now. Welcome to art 101.