Knowledge and communication: A first-order theory

This paper presents a theory of informative communications among agents that allows a speaker to communicate to a hearer truths about the state of the world; the occurrence of events, including other communicative acts; and the knowledge states of any agent -- speaker, hearer, or third parties -- any of these in the past, present, or future -- and any logical combination of these, including formulas with quantifiers. We prove that this theory is consistent, and compatible with a wide range of physical theories. We examine how the theory avoids two potential paradoxes, and discuss how these paradoxes may pose a danger when this theory are extended.

• Type: Journal
• Year: 2005
• Where: AI
• Authors: Ernest Davis
• Keywords: AI 2005, Artificial Intelligence, Communicative Acts, Informative Communications, Theory