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Chapter 15 begins with a general discussion of cultural adaptation the development of complex networks of conversation based on increasingly complex social organization, and the eventual fragmentation of discourse based on separate and often competing interests.The chapter discusses how the development of media first consolidated audiences then facilitated the fragmentation of audiences and the proliferation of incommensurable and conflicting narratives.The recent fragmentation of the US “national story,” centered around the Civil War and the issue of slavery, is used as a case study to illustrate the fragmentation of discourse and narratives, along with associated group and individual identities.The chapter closes with a brief discussion of the interaction of public discourse with politeness, facework, and homeostasis.
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