AdvertisementFor John Baldessari, Conceptual Art Means Serious MischiefMarch 11, 2013Susan StambergfacebookEmail"Cutting Ribbon, Man In Wheelchair, Paintings (Version #2), 1988" shows John Baldessari's signature technique, faces covered with colorful circles. The practice had its genesis when the artist idly stuck a price sticker on the face of someone pictured in a newspaper clipping. (Courtesy the artist/John Baldessari Studio)