Book excerpt: Robert Smithson, Gertrude Stein, Claes Oldenburg, El Lissitsky, Marshall McLuhan, Richard Serra, Timothy Leary, Ad Reinhardt, Adrian Piper, R. Buckminster Fuller, Vito Acconci, Wynham Lewis, F. T. Marinetti, Lucy R. Lippard, John Baldessari, John Cage, Marcel Duchamp, Sol Lewitt, and a variety of other poets, painters, sculptors, composers, physicists, anthropologists, and philosophers all cooperate here to construct a mode of communication which is no longer bound to specific categories of referentiality nor, consequently, to manipulated divisions of aesthetic labor.