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 2001 by "The New York Times" and as founders in Wikipedia's first press release in January 2002. In August of that year, Wales identified himself as "co-founder" of Wikipedia. Sanger assembled on his personal webpage an assortment of links that appear to confirm the status of Sanger and Wales as co-founders. For example, Sanger and Wales are historically cited or described in early news citations and press releases as co-founders. Wales was quoted by "The Boston Globe" as calling Sanger's claim "preposterous" in February 2006, and called "the whole debate" "silly" in an April 2009 interview. In late 2005, Wales