Drawn from a 1978 Speech Communication Association seminar, this collection of papers and other materials explores the subject of argumentation as epistemology. The first paper reviews several critiques of traditional argumentation theories and offers directions for new theories, and the remaining eight papers offer responses to the ideas and positions of the first. Specific topics covered in the papers include (1) the constructivist/interactionist approach to the epistemological functions of argument studies, (2) logic-in-use among everyday arguers, (3) the logic of the coordinated management of meaning, (4) conversational arguing, (5) rhetorical argument as reduplication, (6) "eiconology" as a philosophical ground for understanding the roles of arguing in knowing, (7) argument as epistemological method, and (8) the need for new argumentation theories. Other materials included in the collection are an edited transcript of the seminar and a list of the participants and their topics. (FL)