Wikipedia – A New Community of Practice? O'Sullivan discusses the group's aims; its community and make-up; its costs of doing business (transaction costs); its relations with the public; and its legacy. The second part of the book applies the group theory approach to Wikipedia, devoting a chapter to each aspect. Chapter 10, on the structure of Wikipedia, explains the use of "talk pages" and . Chapter 13, "Wikipedia and the Nature of Knowledge," explores the question of expertise. In this chapter O'Sullivan claims a fundamental disagreement between Wikipedia's two founders, Jimmy Wales and Larry Sanger. While Wales, an admirer of the economist Friedrich Hayek, believed in the
Jimmy Wales traveled outside North America prior to the site's founding, his participation in the Wikipedia project has seen him flying internationally on a near-constant basis as its public face. When Larry Sanger left Wikipedia, Wales's approach was different from Sanger's. Wales was fairly hands-off. Despite involvement in other projects, Wales has denied intending to reduce his role within Wikipedia, telling "The New York Times" in 2008 that "Dialing down is not an option for me ... Not to be too dramatic about it, but, 'to create and distribute a free encyclopedia of the highest possible quality to every single person on