This paper provides a system capable of analyzing the combinatorics of a wide range of conventionally implicated and expressive constructions in natural language via an extension of Potts's (2005) L CI logic for supplementary conventional implicatures. In particular, the system is capable of analyzing objects of mixed conventionally implicated/expressive and at-issue type, and objects with conventionally implicated or expressive meanings which provide the main content of their utterances. The logic is applied to a range of constructions and lexical items in several languages.

This book is an exploration of how knowledge about the reliability of information sources manifests itself in linguistic phenomena and use, focusing on cooperation in language use and how considerations of reliability influence what is done with the information acquired through language. Empirically, the book provides a detailed consideration of the phenomena of hedging and evidentiality and analyzes them using tools from game theory, dynamic semantics, and formal epistemology. Hedging is argued to be a mechanism used by speakers to protect their reputations for cooperativity from damage inflicted by infelicitous discourse moves. The pragmatics of evidential use is also stated in terms of the sorts of histories of interaction that influence reputation: on the analysis of the book, past experience with the evidence source indexed by the evidential determines how the process of adding information will proceed. The book makes many new connections between seemingly disparate aspects of linguistic meaning and practice.

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