So you are standing outside David Zwirner Gallery David Zwirner Gallery at the far western end of 19th Street in Manhattan. Across the way stands Frank Gehry’s misty agglomeration of salt shakers, the IAC Building IAC Building. IAC is an Internet company that brings us The Daily Beast, Match.com, Urban Spoon, Ask.com, BlackPeopleMeet.com, and Vimeo, among many other Web sites—including MyWebFace™, where html surfers may “apply dramatic effects to photos” and “create a cartoon version of themselves,” and Proust.com, where one can “ask and answer questions about the different chapters of their lives helping move their oral history into a protected time capsule.” Don’t be distracted, though. You’re here to see Christopher Williams’s new show, “For Example: Dix-Huit Leçons Sur La Société Industrielle (Revision 12),” up through February 12, 2011.