Summary of Part IV: Complexities of Information Sharing

In Part I, we defined Information Sharing as the process in which a sender exploits information that she shares with the recipient, to anchor her utterances to objects (section 1.7). This idea has remained central to our account. Parts II and III demonstrated that the nature of the information exploited can vary considerably: from a simple database of atomic facts, on the one hand, to a set of complex axioms (section 10.6), on the other.