Although fallacies have been common since Aristotle, until recently little attention has been devoted to identifying and defining them. Furthermore, the concept of fallacy itself has lacked a sufficiently clear meaning to make it a useful tool for evaluating arguments. Douglas Walton takes a new analytical look at the concept of fallacy and presents an up-to-date analysis of its usefulness for argumentation studies. Walton uses case studies illustrating familiar arguments and tricky deceptions in everyday conversation where the charge of fallaciousness (...) is at issue. The numerous case studies show in concrete terms many practical aspects of how to use textual evidence to identify and analyze fallacies and to evaluate arguments as fallacious. Walton looks at how an argument is used in the context of conversation. He defines a fallacy as a conversational move, or sequence of moves, that is supposed to be an argument that contributes to the purpose of the conversation but in reality interferes with it. The view is a pragmatic one, based on the assumption that when people argue, they do so in a context of dialogue, a conventionalized normative framework that is goal-directed. Such a contextual framework is shown to be crucial in determining whether an argument has been used correctly. Walton also shows how examples of fallacies given in the logic textbooks characteristically turn out to be variants of reasonable, even if defeasible or questionable arguments, based on presumptive reasoning. This is the essence of the evaluation problem. A key thesis of the book, which must not be taken for granted as previous textbooks have so often done, is that you can spot a fallacy from how it was used in a context of dialogue. This is an innovative and even, as Walton notes, "a radical and controversial" theory of fallacy. (shrink)

Charles Stevenson introduced the term 'persuasive definition’ to describe a suspect form of moral argument 'which gives a new conceptual meaning to a familiar word without substantially changing its emotive meaning’. However, as Stevenson acknowledges, such a move can be employed legitimately. If persuasive definition is to be a useful notion, we shall need a criterion for identifying specifically illegitimate usage. I criticize a recent proposed criterion from Keith Burgess-Jackson and offer an alternative.

This book provides a systematic analysis of many common argumentation schemes and a compendium of 96 schemes. The study of these schemes, or forms of argument that capture stereotypical patterns of human reasoning, is at the core of argumentation research. Surveying all aspects of argumentation schemes from the ground up, the book takes the reader from the elementary exposition in the first chapter to the latest state of the art in the research efforts to formalize and classify the schemes, outlined (...) in the last chapter. It provides a systematic and comprehensive account, with notation suitable for computational applications that increasingly make use of argumentation schemes. (shrink)

The book also comes with an exhaustive array of study aids that enable the reader to monitor and enhance the learning process.

If we [women] have not stopped rape, we have redefined it, we have faced it, and we have set up the structures to deal with it for ourselves.[T]he definition of rape, which has in the past always been understood to mean the use of violence or the threat of it to force sex upon an unwilling woman, is now being broadened to include a whole range of sexual relations that have never before in all of human experience been regarded as (...) rape.In 1989 the philosopher and self-described feminist Christina Sommers published a short essay — ‘an opinion piece,’ she called it — that was eventually developed into and published as a philosophical article. In this essay Sommers criticized ‘feminist philosophers’ for being ‘oddly unsympathetic to the women whom they claim to represent.’ Specifically, Sommers accused these philosophers of ignoring the ‘values of the average woman’ and of being caught up in an ‘ideological fervor.’ To emphasize her point that the so-called feminist philosophers have lost touch with ‘the average woman,’ Sommers wrote that ‘One must nevertheless expect that many women will continue to swoon at the sight of Rhett Butler carrying Scarlett O'Hara up the stairs to a fate undreamt of in feminist philosophy.’. (shrink)

The purpose of this book is to clarify the concept of definition and improve defining activities.