Informal Philosophy

Informal Philosophy provides an original look at how we should understand and teach philosophy. Avrum Stroll persuasively argues that philosophy should be evaluated using its own methodology and should not merely mimic formal scientific analysis, because while modern science does inform our philosophical views about man and his place in nature, it does not solve philosophical problems. Stroll effectively makes the case for the use of informal philosophy—that is, an approach guided by common sense, appealing to ordinary discourse, and employing a context-driven line of inquiry—to answer philosophical problems.

In just the last twenty years there has arisen a strong interest, especially among teachers of logic at the universities, in teaching techniques of applied logical reasoning and critical thinking. Many universities are now stressing these skills at an introductory level, and to meet the need, informal logic has begun to form and grow as a discipline in its own right. Like all subjects, it helps us to understand it if we can situate it in a context of historical development. This collection of essays provides the readings required to understand the development of a subject whose historical origins have been so far little studied. Many of the chapters are written by scholars in philosophy and speech communication who are themselves leading contributors to the subject, and their contemporary views throw light on how these earlier writers have influenced their thinking. This dimension gives an added interest to the essays, and indicates the way informal logic is currently evolving and seeking out its ancient historical origins.

We are pleased to release this digital edition of Ralph Johnson’s The Rise of Informal Logic as Volume 2 in the series Windsor Studies in Argumentation. This edition is a reprint of the previous Vale Press edition with some minor corrections. We have decided to make this the second volume in the series because it is such a compelling account of the formation of informal logic as a discipline, written by one of the founders of the field. The book includes essential chapters on the history and development of informal logic. Other chapters are key reflections on the theoretical issues raised by the attempt to understand informal argument. Many of the papers were previously published in important journals. A number of them were co-authored with J. Anthony Blair. Three of them have appeared only in the present book.

The title of this book refers to the tension between formal and informal elements in the ways analytical philosophy is practiced. The authors examine questions of the scopes and limits of both kinds of research methods.

This is an introductory guide to the basic principles of constructing good arguments and criticizing bad ones. It is nontechnical in its approach, and is based on 150 key examples, each discussed and evaluated in clear, illustrative detail. The author explains how errors, fallacies, and other key failures of argument occur. He shows how correct uses of argument are based on sound argument strategies for reasoned persuasion and critical questions for responding. Among the many subjects covered are: techniques of posing, replying to, and criticizing questions, forms of valid argument, relevance, appeals to emotion, personal attack, uses and abuses of expert opinion, problems in deploying statistics, loaded terms, equivocation, and arguments from analogy.

The basic question of this monograph is: how should we go about judging arguments to be reasonable or unreasonable? Our concern will be with argument in a broad sense, with realistic arguments in natural language. The basic object will be to engage in a normative study of determining what factors, standards, or procedures should be adopted or appealed to in evaluating an argument as “good,” “not-so-good,” “open to criticism,” “fallacious,” and so forth. Hence our primary concern will be with the problems of how to criticize an argument, and when a criticism is reasonably justified.

Second edition of the introductory guidebook to the basic principles of constructing sound arguments and criticising bad ones. Non-technical in approach, it is based on 186 examples, which Douglas Walton, a leading authority in the field of informal logic, discusses and evaluates in clear, illustrative detail. Walton explains how errors, fallacies, and other key failures of argument occur. He shows how correct uses of argument are based on sound strategies for reasoned persuasion and critical responses. This edition takes into account many developments in the field of argumentation study that have occurred since 1989, many created by the author. Drawing on these developments, Walton includes and analyzes 36 new topical examples and also brings in work on argumentation schemes. Ideally suited for use in courses in informal logic and introduction to philosophy, this book will also be valuable to students of pragmatics, rhetoric, and speech communication.

Following a brief introduction, Chapter 1 outlines the basic concepts and principles of informal logic. Chapters 2 and 3 focus on deductive and inductive reasoning (analogical and statistical) and include a discussion of validity, soundness and cogency. Chapter 4 presents rhetorical devices and informal fallacies. Chapter 5 discusses strategies and tactics for the evaluation of complex argumentation. Chapter 6 provides an overview that includes a guide to good critical thinking habits, a discussion of the composition and development of argumentative essays, and an introduction to information literacy. Appendices include a synopsis of categorical logic and resources for additional study. The book includes diagrams and external hyperlinks.