This book identifies 25 argumentation schemes for presumptive reasoning and matches a set of critical questions to each.

Vol. presents a method for critically evaluating relevance in arguments based on case studies & a new relevance theory incorporating techniques of argumentation theory, logic & artificiaI intelligence. For scholars/students in argumentation & rhetoric.

Media argumentation is a powerful force in our lives. From political speeches to television commercials to war propaganda, it can effectively mobilize political action, influence the public, and market products. This book presents a new and systematic way of thinking about the influence of mass media in our lives, showing the intersection of media sources with argumentation theory, informal logic, computational theory, and theories of persuasion. Using a variety of case studies that represent arguments that typically occur in the mass (...) media, Douglas Walton demonstrates how tools recently developed in argumentation theory can be usefully applied to the identification, analysis, and evaluation of media arguments. (shrink)

Fundamentals of Critical Argumentation presents the basic tools for the identification, analysis, and evaluation of common arguments for beginners. The book teaches by using examples of arguments in dialogues, both in the text itself and in the exercises. Examples of controversial legal, political, and ethical arguments are analyzed. Illustrating the most common kinds of arguments, the book also explains how to evaluate each kind by critical questioning. Douglas Walton shows how arguments can be reasonable under the right dialogue conditions (...) by using critical questions to evaluate them. The book teaches by example, both in the text itself and in exercises, but it is based on methods that have been developed through the author's thirty years of research in argumentation studies. (shrink)

A "slippery slope argument" is a type of argument in which a first step is taken and a series of inextricable consequences follow, ultimately leading to a disastrous outcome. Many textbooks on informal logic and critical thinking treat the slippery slope argument as a fallacy. Walton argues that used correctly in some cases, they can be a reasonable type of argument to shift a burden of proof in a critical discussion, while in other cases they are used incorrectly. Walton identifies (...) and analyzes four types of slippery slope argument. Walton presents guidelines that show how each type of slippery slope argument can be used correctly or incorrectly, using over fifty case studies of argumentation on controversial issues. These include abortion, medical research on human embryos, euthanasia, the decriminalization of marijuana, pornography, and censorship, and banning of American flag burning. (shrink)

Is the flavor of mint reducible to the minty smell, the taste, and the menthol-like coolness on the roof of one’s mouth, or does it include something over and above these—something not properly associated with any one of the contributing senses? More generally, are there features of perceptual experiences—so-called novel features—that are not associated with any of our senses taken singly? This question has received a lot of attention of late. Yet surprisingly little attention has been paid to the question (...) of what it means to say that a feature is associated with a sensory modality in the first place. Indeed, there is only one fully developed proposal in the literature, due to Casey O’Callaghan. I argue that this proposal is too permissive to inform the debate over novel features. I go on to argue that all attempts to formulate a better proposal along these lines fail. The corollary of my arguments is that the question of the existence of novel features is poorly formed. Furthermore, the problem generalizes, with the result that we should not rely on our pre-theoretical notions of the senses as the basis of theorizing about the features of perceptual experiences. (shrink)

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. (shrink)

This chapter proposes a dialectical approach to legal interpretation, consisting of three dimensions: a formalization of the canons of interpretation in terms of argumentation schemes; a dialectical classification of interpretive schemes; and a logical and computational model for comparing the arguments pro and contra an interpretation. The traditional interpretive maxims or canons used in both common and civil law are translated into defeasible patterns of arguments, which can be evaluated through sets of corresponding critical questions. These interpretive argumentation schemes are (...) classified in general categories and a distinction is drawn between schemes supporting and rebutting an interpretation. This framework allows conceiving statutory interpretation as a dialectical procedure consisting in weighing arguments pro and contra an interpretation. This procedure is formalized and represented computationally through tools from formal argumentation systems. (shrink)

Argumentation, which can be abstractly defined as the interaction of different arguments for and against some conclusion, is an important skill to learn for everyday life, law, science, politics and business. The best way to learn it is to try it out on real instances of arguments found in everyday conversational exchanges and legal argumentation. The introductory chapter of this book gives a clear general idea of what the methods of argumentation are and how they work as tools that can (...) be used to analyze arguments. Each subsequent chapter then applies these methods to a leading problem of argumentation. Today the field of computing has embraced argumentation as a paradigm for research in artificial intelligence and multi-agent systems. Another purpose of this book is to present and refine tools and techniques from computing as components of the methods that can be handily used by scholars in other fields. (shrink)

Media argumentation is a powerful force in our lives. From political speeches to television commercials to war propaganda, it can effectively mobilize political action, influence the public, and market products. This book presents a new and systematic way of thinking about the influence of mass media in our lives, showing the intersection of media sources with argumentation theory, informal logic, computational theory, and theories of persuasion. Using a variety of case studies that represent arguments that typically occur in the mass (...) media, Douglas Walton demonstrates how tools recently developed in argumentation theory can be usefully applied to the identification, analysis, and evaluation of media arguments. He draws upon the most recent developments in artificial intelligence, including dialogical theories of argument, which he developed, as well as speech act theory. Each chapter presents solutions to problems central to understanding, analyzing, and criticizing media argumentation. (shrink)

In this volume, Douglas Yoder uses the tools of modern and postmodern philosophy and biblical criticism to elucidate the epistemology of the Tanakh, the collection of writings that comprise the Hebrew Bible. Despite the conceptual sophistication of the Tanakh, its epistemology has been overlooked in both religious and secular hermeneutics. The concept of revelation, the genre of apocalypse, and critiques of ideology and theory are all found within or derive from epistemic texts of the Tanakh. Yoder examines how philosophers (...) such as Spinoza, Hume, and Kant interacted with such matters. He also explores how the motifs of writing, reading, interpretation, image, and animals, topics that figure prominently in the work of Derrida, Foucault, and Nietzsche, appear also in the Tanakh. An understanding of Tanakh epistemology, he concludes, can lead to new appraisals of religious and secular life throughout the modern world. (shrink)

Recent work in artificial intelligence has increasingly turned to argumentation as a rich, interdisciplinary area of research that can provide new methods related to evidence and reasoning in the area of law. Douglas Walton provides an introduction to basic concepts, tools and methods in argumentation theory and artificial intelligence as applied to the analysis and evaluation of witness testimony. He shows how witness testimony is by its nature inherently fallible and sometimes subject to disastrous failures. At the same time (...) such testimony can provide evidence that is not only necessary but inherently reasonable for logically guiding legal experts to accept or reject a claim. Walton shows how to overcome the traditional disdain for witness testimony as a type of evidence shown by logical positivists, and the views of trial sceptics who doubt that trial rules deal with witness testimony in a way that yields a rational decision-making process. (shrink)

On September 1, 2023, Texas made important revisions to it its decades‐old statute granting legal safe harbor immunity to physicians who withhold or withdraw life‐sustaining treatment over the objection of critically ill patients’ surrogate decision‐makers. However, lawmakers left untouched glaring flaws in a key safeguard for patients—the transfer option. The transfer option is ethically important because, when no hospital is willing to accept the patient in transfer, that fact is taken as strong evidence that the surrogates’ treatment requests fall outside (...) accepted medical practice. But there are serious shortcomings in how the transfer option is carried out in Texas and many other states, which undermines the ethical usefulness of the process. We identify these shortcomings and recommend revisions to state statutes and professional guidelines to overcome them. (shrink)

Wigmore thought that there was a science of proof underlying legal reasoning that could be displayed in any given case as a graphic sequence of argumentation from the evidence in the case leading to the ultimate probandum. Argumentation technology has now vindicated this approach by providing useful qualitative methods that can be applied to identifying, analyzing, and evaluating the pro and con arguments put forward by both sides in a trial. In this chapter, it is shown how to apply argumentation (...) schemes, such as argument from witness testimony, using argument diagrams applied to typical sequences of evidence-based legal reasoning in which there is a successive refinement of arguments displayed as the evidence comes into a case. It is shown how argument from applying rules to cases, teleological, argument from expert witness testimony, and abductive reasoning are centrally important for this purpose. (shrink)

A growing interest in and concern about the adequacy and fairness of modern peer-review practices in publication and funding are apparent across a wide range of scientific disciplines. Although questions about reliability, accountability, reviewer bias, and competence have been raised, there has been very little direct research on these variables.The present investigation was an attempt to study the peer-review process directly, in the natural setting of actual journal referee evaluations of submitted manuscripts. As test materials we selected 12 already published (...) research articles by investigators from prestigious and highly productive American psychology departments, one article from each of 12 highly regarded and widely read American psychology journals with high rejection rates (80%) and nonblind refereeing practices.With fictitious names and institutions substituted for the original ones (e.g., Tri-Valley Center for Human Potential), the altered manuscripts were formally resubmitted to the journals that had originally refereed and published them 18 to 32 months earlier. Of the sample of 38 editors and reviewers, only three (8%) detected the resubmissions. This result allowed nine of the 12 articles to continue through the review process to receive an actual evaluation: eight of the nine were rejected. Sixteen of the 18 referees (89%) recommended against publication and the editors concurred. The grounds for rejection were in many cases described as “serious methodological flaws.” A number of possible interpretations of these data are reviewed and evaluated. (shrink)

First published in 1984, Cultural Analysis is a systematic examination of the theories of culture contained in the writings of four contemporary social theorists: Peter L. Berger, Mary Douglas, Michel Foucault, and Jürgen Habermas. This study of their work clarifies their contributions to the analysis of culture and shows the converging assumptions that the authors believe are laying the foundation for a new approach to the study of culture. The focus is specifically on culture, a concept that remains subject (...) to ambiguities of treatment, and concentrates on questions concerning the definition and content of culture, its construction, its relations with social conditions, and the manner in which it may be changing. The books demonstrates how these writers have made strides towards defining culture as an objective element of social interaction which can be subjected to critical investigation. (shrink)

Commonsense Consequentialism is a book about morality, rationality, and the interconnections between the two. In it, Douglas W. Portmore defends a version of consequentialism that both comports with our commonsense moral intuitions and shares with other consequentialist theories the same compelling teleological conception of practical reasons. Broadly construed, consequentialism is the view that an act's deontic status is determined by how its outcome ranks relative to those of the available alternatives on some evaluative ranking. Portmore argues that outcomes should (...) be ranked, not according to their impersonal value, but according to how much reason the relevant agent has to desire that each outcome obtains and that, when outcomes are ranked in this way, we arrive at a version of consequentialism that can better account for our commonsense moral intuitions than even many forms of deontology can. What's more, Portmore argues that we should accept this version of consequentialism, because we should accept both that an agent can be morally required to do only what she has most reason to do and that what she has most reason to do is to perform the act that would produce the outcome that she has most reason to want to obtain.Although the primary aim of the book is to defend a particular moral theory, Portmore defends this theory as part of a coherent whole concerning our commonsense views about the nature and substance of both morality and rationality. Thus, it will be of interest not only to those working on consequentialism and other areas of normative ethics, but also to those working in metaethics. Beyond offering an account of morality, Portmore offers accounts of practical reasons, practical rationality, and the objective/subjective obligation distinction. (shrink)

Properties and objects are everywhere, but remain a philosophical mystery. Douglas Ehring argues that the idea of tropes--properties and relations understood as particulars--provides the best foundation for a metaphysical account of properties and objects. He develops and defends a new theory of trope nominalism.

ABSTRACT In this wide-ranging interview Professor Douglas V. Porpora discusses a number of issues. First, how he became a Critical Realist through his early work on the concept of structure. Second, drawing on his Reconstructing Sociology, his take on the current state of American sociology. This leads to discussion of the broader range of his work as part of Margaret Archer’s various Centre for Social Ontology projects, and on moral-macro reasoning and the concept of truth in political discourse.

What is truth? What role does truth play in the connections between language and the world? What is the relationship between truth and being? Douglas Edwards tackles these questions and develops a distinctive metaphysical worldview. He argues that in some domains language responds to the world, whereas in others language generates the world.

The idea of basic action is a fixed point in the contemporary investigation of the nature of action. And while there are arguments aimed at putting the idea in place, it is meant to be closer to a gift of common sense than to a hard-won achievement of philosophical reflection. It first appears at the stage of innocuous description and before the announcement of philosophical positions. And yet, as any decent magician knows, the real work so often gets done in (...) the set-up. I argue that the seemingly innocent idea of basic action is, in fact, bound up with a wide-spread conception of the nature of bodily or physical action (section 3). Its legitimacy is vital to the intelligibility of the causal theory of action, according to which physical action consists of a mere event and a condition of mind joined (in the right way) by the bond of causality. Left unchecked, means-end reason threatens to permeate physical action, and thus threatens the sovereignty of the sphere of material events at the center of the causal theory: such events, including the movements of one’s body when one intentionally moves it, are thought to be constitutively independent of the subject’s rational capacities. Basic action is a necessary countermeasure, a sort of metaphysical containment wall needed to preserve the separate jurisdictions of the mind of the acting subject and what merely happens. I argue that so long as action theory proceeds under the assumption that there must be basic action, it must regard our relation to the progress of our own deeds as not different in principle from Marx’s understanding of the relation of the non-worker (Nichtarbeiter) to the material processes that realize his own ideas, namely the work done on the factory floor. Each is alienated from the progress, or getting done, of his deeds. In each the process of doing something intentionally turns out to be a case of delegating tasks to another power. How the process comes to completion is not willed, and at best watched: the causal work is not the agent’s work, his knowledge not self-knowledge (section 5). We should find this unacceptable. And if this is right, it should be a pressing question whether there must be basic action. I argue that we have no good reason to think so: basic action is not forced on us by argument (sections 2 and 4). It is open to us to consider an alternative, one on which action is not, in the fundamental case, barren of means- end structure, but instead permeated by it: we register as a force in nature not at the limit of the means-end order but precisely in its constitution. [from article introduction]. (shrink)

How should we teach controversial issues? And which issues should we teach as controversies? In this paper, I argue that educators should heed what I call a ‘psychological condition’ in their practical efforts to address these questions. In defending this claim, I engage with the various decision criteria that have been advanced in the controversial issues literature: the epistemic criterion, behavioral criterion, political criterion and politically authentic criterion. My argument is that the supporters of these various criteria have focused too (...) closely on the socio-political and epistemic qualities of controversial issues in deriving their controversial issues pedagogies and have thereby overlooked the necessary subjective conditions for teaching controversial issues. If our pedagogical efforts to cultivate students’ reason by means of controversial issues are to be successful, then we must understand controversy as fundamentally a psychological phenomenon consisting in an intellectual tension in the minds of students. In the final pages, I conclude by recommending several forms of directive teaching that promise to be instrumental for creating such intellectual tension. (shrink)

Minors are generally considered incompetent to provide legally binding decisions regarding their health care, and parents or guardians are empowered to make those decisions on their behalf. Parental authority is not absolute, however, and when a parent acts contrary to the best interests of a child, the state may intervene. The best interests standard is the threshold most frequently employed in challenging a parent''s refusal to provide consent for a child''s medical care. In this paper, I will argue that the (...) best interest standard provides insufficient guidance for decision-making regarding children and does not reflect the actual standard used by medical providers and courts. Rather, I will suggest that the Harm Principle provides a more appropriate threshold for state intervention than the Best Interest standard. Finally, I will suggest a series of criteria that can be used in deciding whether the state should intervene in a parent''s decision to refuse medical care on behalf of a child. (shrink)

This study looks to the work of Tarski's mentors Stanislaw Lesniewski and Tadeusz Kotarbinski, and reconsiders all of the major issues in Tarski scholarship in light of the conception of Intuitionistic Formalism developed: semantics, truth, paradox, logical consequence.

It is argued that a certain form of the view that the semantic paradoxes show that natural languages are "inconsistent" provides the best response to the semantic paradoxes. After extended discussions of the views of Kirk Ludwig and Matti Eklund, it is argued that in its strongest formulation the view maintains that understanding a natural language is sharing cognition of an inconsistent semantic theory for that language with other speakers. A number of aspects of this approach are discussed and a (...) few objections are entertained. (shrink)

A measure of good and bad is internal to something falling under it when that thing falls under the measure in virtue of what it is. The concept of an internal standard has broad application. Compare the external breed standards arbitrarily imposed at a dog show with the internal standards of health at work in the veterinarian's office. This paper is about practical standards, measures of acting well and badly, and so measures deployed in deliberation and choice. More specifically, it (...) is about the attempt to explain the unconditional validity of certain norms (say, of justice and prudence) by showing them to be internal to our agency and the causality it involves. This is constitutivism. Its most prominent incarnations share a set of assumptions about the nature of agency and our knowledge of it: conceptualism, formalism and absolutism. This essay investigates the merits and viability of rejecting all of them while still seeking the ground of practical normativity in what we are, in our fundamental activity. (shrink)

If “perfectionism” in ethics refers to those normative theories that treat the fulfillment or realization of human nature as central to an account of both goodness and moral obligation, in what sense is “human flourishing” a perfectionist notion? How much of what we take “human flourishing” to signify is the result of our understanding of human nature? Is the content of this concept simply read off an examination of our nature? Is there no place for diversity and individuality? Is the (...) belief that the content of such a normative concept can be determined by an appeal to human nature merely the result of epistemological naiveté? What is the exact character of the connection between human flourishing and human nature? These questions are the ultimate concern of this essay, but to appreciate the answers that will be offered it is necessary to understand what is meant by “human flourishing.” “Human flourishing” is a relatively recent term in ethics. It seems to have developed in the last two decades because the traditional translation of the Greek term eudaimonia as “happiness” failed to communicate clearly that eudaimonia was an objective good, not merely a subjective good. (shrink)

The essays can be seen as addressing Tarski's seminal treatment of four basic questions about logical consequence. (1) How are we to understand truth, one of ...

In this article, I argue that Brad Hooker's rule-consequentialism implausibly implies that what earthlings are morally required to sacrifice for the sake of helping their less fortunate brethren depends on whether or not other people exist on some distant planet even when these others would be too far away for earthlings to affect.

The aim of this paper is to display an alternative to the familiar decompositional approach in action theory, one that resists the demand for an explanation of action in non-agential terms, while not simply treating the notion of intentional agency as an unexplained primitive. On this Anscombean alternative, action is not a worldly event with certain psychological causes, but a distinctive form of material process, one that is not simply caused by an exercise of reason but is itself a productive (...) exercise of reason. I argue that to comprehend the proposed alternative requires an account of the temporality of events in general. An event does not simply have a position in time, but is itself temporally structured. With the inner temporality of events in view, the Anscombean conception of action as a specifically self-conscious form of temporal unity is made available for critical reflection. (shrink)

This paper presents a model for the structure of universal frameworks in logic, mathematics, and physics that are closed to logical conclusion by the mechanism of paradox across a dualism of elements. The prohibition takes different forms defined by the framework of observation inherent to the structure. Forms include either prohibition to conclusion on the logical relationship of internal elements or prohibition to conclusion based on the existence of an element not included in the framework of a first element. The (...) model is applied to logical arguments in philosophy, mathematics, and physics and is initially a geometrical analysis of quantum theory and its application in experiment. Conclusion from the analysis is extended to give insight into the complexity of infinities above the two-dimensional boundary of the model. (shrink)

Esta pesquisa analisa alguns tópicos sobre a metodologia de acordo com a filosofia da ciência de Larry Laudan, além de examinar, na área da educação, esta proposta de interpretação filosófica. Trouxemos como elementos algumas considerações e definições sobre a metodologia em Laudan, isto é, da metodologia como um instrumento para a realização da axiologia (que são as metas e os valores cognitivos), porém, apresentando também interessantes relações para com as teorias específicas, como o de justificar as teorias específicas e de (...) ser restringida por elas. A metodologia é também, dentro do modelo reticulado de Laudan, justificada pela axiologia. Para além desta análise, há também uma defesa da metodologia enquanto o estudo dela própria, o que permite encontrarmos conexões interessantes em teorias da educação, como no caso da investigação-ação, onde vemos que estamos diante de uma tradição de pesquisa nos moldes defendidos pela filosofia da ciência de Laudan, por reconhecermos que temos um modelo reticular composto por teorias específicas, metodologias e axiologia também na área da educação. Veremos também que a metodologia em Laudan possui um caráter dinâmico, tensionando e sendo tensionada pelos componentes da tradição de pesquisa, caracterizando o modelo reticulado de racionalidade proposto pelo filósofo. Este debate em Laudan, juntamente com a tradição de pesquisa da investigação-ação da área da educação serão investigados neste artigo. Como base para a construção deste texto, utilizamos as seguintes obras de Laudan: The Progress and its problems: towards a theory of scientific growth (1977), Science and Values (1984a), Explaining the success of science: beyond epistemic realism and relativism (1984b), Methodology’s prospects (1986), Progress or Rationality? The Prospects for Normative Naturalism (1987a), Aim-less Epistemology? (1990a) e Normative Naturalism (1990b). (shrink)

The Agriculture, Food and Human Values Society and the journal _Agriculture and Human Values_ provided a crucial intellectual space for the early transdisciplinary critique of the industrial agrifood system. This paper describes that process and presents the concept of “The Doctors of Agrifood Studies” as a metaphor for the key role critical agrifood social scientists played in documenting the unsustainability of conventional agriculture and working to create an alternative, ethical, sustainable agrifood system. After the introduction, the paper details the “Critical (...) Turn” in agrifood studies, followed by a reconsideration of my “Four Questions” framework, focusing on the current tension between the food security and food sovereignty discourses and movements. (shrink)

To understand Nietzsche’s pedagogy of self-overcoming and to determine its true import for contemporary education, it is necessary to understand Nietzsche’s view of the self that is to be overcome. Nevertheless, previous interpretations of self-overcoming in the journals of the philosophy of education have lacked serious engagement with the Nietzschean self. I devote the first part of this paper to redressing this neglect and arguing for a view of the Nietzschean self as an assemblage of ontologically basic affects which have (...) been guided and modulated by the incorporation of perspectives. This interpretation has important consequences for self-overcoming, for it constrains the individual’s conscious agency to operations on perspectives. In light of this view I then advance a competing conception of self-overcoming and discuss some of the shortcomings of antecedent interpretations. Although previous interpreters have done their part to exhaust the characteristic actions of self-overcoming, I argue that they have either exaggerated the deleteriousness of social influence in the formation of the authentic individual, or else ignore it altogether. In the final part I reconsider the debate over the democratic or aristocratic nature of Nietzsche’s pedagogy of self-overcoming. Interestingly, self-overcoming cannot be labeled strictly as either, and out of this ambiguity grows the role of the school as an agent of cultural transformation. (shrink)

This collection of thirteen original essays by such well-known philosophers as Thomas Nagel, Peter Singer, J.O. Urmson, David A.J. Richards, James Griffin, R.B. Brandt, John C. Harsanyi, T.M. Scanlon, and others discusses the philosophy of R.M. Hare put forth in his book Moral Thinking, including his thoughts on universalizability, moral psychology, and the role of common-sense moral principles. In addition, Professor Hare responds to his critics with an essay and a detailed, point-by-point criticism.