by A. Klefstad December 22, 2002 Justin Schaefer, 22, notes that being optimistic is a very healthy tool. Schaefer is a brilliant maker of visuality—paintings, fabric sculptures, installations, environment, graffitti, drawings, and more—and is also a talented creator of partnerships, a curator of shows in Minneapolis and New York. All this sounds high-flying, and in terms of its aesthetics, it is, but it’s…