Most work on fallacies continues to conceptualize fallacious reasoning as involving a breach of a formal or quasi-formal rule. Chaim Perelman's theory of argumentation provides a way to conceptualize fallacies in a completely different way. His approach depends on an understanding of standards of rationality as essentially connected with conceptions of universality. Such an approach allows one to get beyond some of the basic problems of fallacy theory, and turns informal logic toward substantive philosophical questions. I show this by reinterpreting (...) three so-called fallacies - theargumentum ad baculum, equivocation and composition/division - in the light of Perelman's account. (shrink)

The article develops and justifies, on the basis of the epistemological argumentation theory, two central pieces of the theory of evaluative argumentation interpretation: 1. criteria for recognizing argument types and 2. rules for adding reasons to create ideal arguments. Ad 1: The criteria for identifying argument types are a selection of essential elements from the definitions of the respective argument types. Ad 2: After presenting the general principles for adding reasons (benevolence, authenticity, immanence, optimization), heuristics are proposed for finding missing (...) reasons, for deductive arguments, e.g., semantic tableaux are suggested. (shrink)

The issue I address in this paper is the age-old problem of the relationship between logic and rhetoric. More specifically, I ask the question, how do logic and rhetoric differ in their approaches to the study of argumentation? What makes this question timely are the changes that logic has undergone in the last 25 years. In this paper, I develop the idea that an argument is the central event in what I call argumentative space. I present a conception of argumentative (...) space as a subspace within rational space and seek to provide a rough characterization of the main features of argumentative space as understood, on the one hand, by informal logic and, on the other hand, by rhetoric. (shrink)

Hamblin’s Fallacies remains one of the crucial documents in the development of informal logic and argumentation theory. His critique of traditional approaches to the fallacies (what he dubbed ‘The Standard Treatment’) helped to revitalize the study of fallacies. Recently I had occasion to reread Fallacies and came to the conclusion that some of my earlier criticisms (1989, 1990) had missed the real force of what was going on there, that I and others have perhaps not fully appreciated what Hamblin is (...) up to. In this paper, I plan to revisit Fallacies and make manifest its coherence. (shrink)

The article outlines a general epistemological theory of argument: a theory that regards providingjustified belief as the principal aim of argumentation, and defends it instrumentalistically. After introducing some central terms of such a theory, answers to its central questions are proposed: the primary object and structure of the theory, the function of arguments, which is to lead to justified belief, the way such arguments function, which is to guide the addressee's cognizing, objective versus subjective aspects of argumentation, designing different types (...) of argument. Then the notion of ' valid argument' is defined and criteria for the adequate use of such arguments are introduced. Finally, this conception is justified as, among others, leading to more true beliefs than competing conceptions. (shrink)

An overview of the epistemological approach to argumentation, explaining what it is, justifying it as better than a rhetorical or a consensual ist approach.systematizing the main directions and theories according to their criteria for good argumentation and presenting their contributions to major topics of argumentation theory. Also. an introduction to the articles of the two special issues of Informal Logic about the epistemological approach to argumentation.