 was an avant-garde impulse. So you can kind of track every art movement in the 20th century as having an element of the avant-garde in it. As a matter of fact, that was the game in the 20th century was leapfrogging the guys who came before you to try to make it weirder and try to make it more extreme until you get to something like conceptual art where it vanishes completely and then it has to rebuild itself again and again.