Acknowledgments -- I. Introduction -- II. A Model of Aristotelian Causation -- Perfective Impulses -- Active and Acquiescent Powers -- Dynamic Re-Alignment -- Dynamic Equilibrium -- Tendency to Order -- Referential Grid -- Summary -- III. An Aristotelian Theory of Communication -- Institutional Contexts -- Modes of Proof -- Topical Aids to Speech Construction -- Summary -- IV. "Information Theory": Causality and Criticism -- Definition of "Information Theory" -- The Concept of Entropy -- Epistemological Status -- Referential Grid -- Sources of Observed Change -- Statistical Relationships -- Entropy as a Causal Model of "Information Theory" -- Implications of the "Information Theory" / Causal Model for Rhetorical Criticism -- Summary -- V. A Comparison of Critical Perspectives -- Bibliography -- Index of Authors.