The critic, theorist, and sometimes curator, David Hickey, wrote in one of his essays, "...three decades of art theory and art history have destroyed our understanding of art practice."
He also says that the young artists now has lost the sound footing of history(as he called it).
He has a list of ten that supports his statement.
1)Pluralism
2) Self-Indulgence
3)Rousseau.
4)Suzi Gablik
5)Let's take some responsibility
6.)Jean Baudrillard, in The Conspiracy of Art
7.)www.youtube.com
8) Lane Relyea
9)Surrealism
10)Tracey Emin