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
Brazil–Nigeria relations government opened the "Casa da Nigeria" or "Nigerian Culture House" in the historic Pelourinho neighborhood of Salvador, Bahia, with the support of the governments of Bahia and Brazil. The house, located inside a former slave quarters at No. 26 Alfredo Brito Street, is centered in an area of Salvador which long served as a cultural and economic center (particularly the trafficking of slaves) for the city in colonial times. Brazil–Nigeria relations Brazil–Nigeria relations refers to the current and historical relationship between Brazil and Nigeria. Relations focus primarily upon trade and culture. The two nations, one the largest country in Latin