We tend to think of artists as people with sorts of egos that make them want to stay in the spotlight, to get attention. An exhibition of three important L.A. artists focuses, instead, on their various of methods of making themselves disappear. Aptly titled, Disappearing—California c. 1970 at the Modern Art Museum in Fort Worth, this show is the first to look in detail at the conceptually-based art of Chris Burden, Jack Goldstein and Bas Jan Ader.