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)

This is a major work in moral philosophy, the long-awaited follow-up to Parfit's 1984 classic Reasons and Persons, a landmark of twentieth-century philosophy. Parfit now presents a powerful new treatment of reasons and a critical examination of the most prominent systematic moral theories, leading to his own ground-breaking conclusion.

Democracy is usually justified either on intrinsic or instrumental, particularly epistemic, grounds. Intrinsic justifications stress the values inherent in the democratic process itself, whereas epistemic ones stress that it results in good outcomes. This article examines whether epistemic justifications for deliberative democracy are superior to intrinsic ones. The Condorcet jury theorem is the most common epistemic justification of democracy. I argue that it is not appropriate for deliberative democracy. Yet deliberative democrats often explicitly state that the process will favour the (...) best argument. This can only be the case if deliberation improves the overall competence of the group and of the individuals that constitute it. I analyse when deliberation will increase competences and when it will not do so and find that individual competences will not reliably increase as a result of deliberation. In order for deliberative democracy to be epistemically more effective than representative democracy, strong procedural assumptions need to be made and deliberative democracy needs to be justified based on a combination of epistemic and intrinsic elements. (shrink)

Normative requirements are often overlooked, but they are central features of the normative world. Rationality is often thought to consist in acting for reasons, but following normative requirements is also a major part of rationality. In particular, correct reasoning – both theoretical and practical – is governed by normative requirements rather than by reasons. This article explains the nature of normative requirements, and gives examples of their importance. It also describes mistakes that philosophers have made as a result of confusing (...) normative requirements with reasons. (shrink)

In this book, T. M. Scanlon offers new answers to these questions, as they apply to the central part of morality that concerns what we owe to each other.

This paper is the introduction to the volume. It gives an argumentative view of the philosophical landscape concerning incommensurability and incomparability. It argues that incomparability, not incommensurability, is the important phenomenon on which philosophers should be focusing and that the arguments for the existence of incomparability are so far not compelling.

Modern logic has Wldergone some remarkable developments in the last hun dred years. These have contributed to the extraordinary use of formal logic which has become essentially the concern of mathematicians. This has led to attempts to identify logic with formal logic. The claim has even been made that all non-formal reasoning, to the extent that it cannot be formalized, no longer belongs to logic. This conception leads to a genuine impoverishment of logic as well as to a narrow conception (...) of reason. It means that as soon as demonstrative proofs are no longer available reason will no longer dominate. Even the idea of the 'reasonable' becomes foreign to logic and such expres sions as 'reasonable decisions', 'reasonable choice' or 'reasonable hypotheses' would be put aside as meaningless. The domain of action, including method ology and everything that is given over to deliberation or controversy - i.e., foreign to formal logic - would become a battleground where necessarily the reason of the strongest would always prevail. (shrink)

In the international bestseller, Thinking, Fast and Slow, Daniel Kahneman, the renowned psychologist and winner of the Nobel Prize in Economics, takes us on a groundbreaking tour of the mind and explains the two systems that drive the way we think. System 1 is fast, intuitive, and emotional; System 2 is slower, more deliberative, and more logical. The impact of overconfidence on corporate strategies, the difficulties of predicting what will make us happy in the future, the profound effect of cognitive (...) biases on everything from playing the stock market to planning our next vacation—each of these can be understood only by knowing how the two systems shape our judgments and decisions. -/- Engaging the reader in a lively conversation about how we think, Kahneman reveals where we can and cannot trust our intuitions and how we can tap into the benefits of slow thinking. He offers practical and enlightening insights into how choices are made in both our business and our personal lives—and how we can use different techniques to guard against the mental glitches that often get us into trouble. Winner of the National Academy of Sciences Best Book Award and the Los Angeles Times Book Prize and selected by The New York Times Book Review as one of the ten best books of 2011, Thinking, Fast and Slow is destined to be a classic. (shrink)

In redefining logic, philosophers need to go back to the Aristotelian roots of the subject, to expand the boundaries of the subject to include informal logic and to give up false oppositions between informal and formal logic.

Practical reason is the general human capacity for resolving, through reflection, the question of what one is to do. Deliberation of this kind is practical in at least two senses. First, it is practical in its subject matter, insofar as it is concerned with action. But it is also practical in its consequences or its issue, insofar as reflection about action itself directly moves people to act. Our capacity for deliberative self-determination raises two sets of philosophical problems. First, there are (...) questions about how deliberation can succeed in being practical in its issue. What do we need to assume — both about agents and about the processes of reasoning they engage in — to make sense of the fact that deliberative reflection can directly give rise to action? Can we do justice to this dimension of practical reason while preserving the idea that practical deliberation is genuinely a form of reasoning? Second, there are large issues concerning the content of the standards that are brought to bear in practical reasoning. Which norms for the assessment of action are binding on us as agents? Do these norms provide resources for critical reflection about our ends, or are they exclusively instrumental? Under what conditions do moral norms yield valid standards for reasoning about action? The first set of issues is addressed in sections 1-3 of the present article, while sections 4-5 cover the second set of issues. (shrink)

‘In Context’ is aimed at giving contextualization its rightful place in the study of argumentation. First, Frans H. van Eemeren explains the crucial role of context in a reconstructive analysis of argumentative discourse. He distinguishes four levels of contextualization. Second, he situates his approach to context in the field of argumentation studies by comparing it with Walton’s approach. He emphasizes the importance of distinguishing clearly between a normatively motivated theoretical ideal model and empirically-based communicative activity types. Third, van Eemeren concentrates (...) on the ‘macro-level’ of contextualization: contextualization in institutionalized communicative activity types. He makes clear that the macro-context of a communicative activity type can be characterized argumentatively by describing the disctinctive features of the empirical counterparts of the four stages of a critical discussion in the activity type concerned. Fourth, he points out what the consequences of the macrocontextualization of argumentative discourse in a certain communicative activity type are for the strategic maneuvering that may takes place and the identification of fallacies as derailments of strategic maneuvering. Fifth, van Eemeren draws some general conclusions regarding the role of contextualization in the analysis and evaluation of argumentative discourse. (shrink)

In 1958, Chaïm Perelman and Lucie Olbrechts-Tyteca published Traité de l'argumentation: La nouvelle rhétorique, the culmination of many years study. A seminal work in philosophy and rhetoric, it aimed to bring classical Aristotelian rhetoric into the modern era and present a model of argumentation that promoted action and reasonableness. One distinctive feature of the dense account found in this work is the claim that the success of argumentation can in part be measured by the responses of the audience for which (...) it is intended. By that standard, the project of the new rhetoric appears unsuccessful, because the audience for whom Perelman (and Olbrechts-Tyteca) expressly wrote was the audience least captivated by .. (shrink)

Searle’s tool for understanding culture, law and society is the opposition between brute reality and institutional reality, or in other words between: observer-independent features of the world, such as force, mass and gravitational attraction, and observer-relative features of the world, such as money, property, marriage and government. The question posed here is: under which of these two headings do moral concepts fall? This is an important question because there are moral facts – for example pertaining to guilt and responsibility – (...) which hover uncomfortably close to the boundary between the observer-relative and the observer-independent. By means of a thought experiment involving an imagined Chinese society in which guilt is determined by the random throwing of sticks, I seek to show that moral concepts threaten the foundations of Searle’s philosophy of social reality. (shrink)

The study of rationality and practical reason, or rationality in action, has been central to Western intellectual culture. In this invigorating book, John Searle lays out six claims of what he calls the Classical Model of rationality and shows why they are false. He then presents an alternative theory of the role of rationality in thought and action. A central point of Searle's theory is that only irrational actions are directly caused by beliefs and desires—for example, the actions of a (...) person in the grip of an obsession or addiction. In most cases of rational action, there is a gap between the motivating desire and the actual decision making. The traditional name for this gap is "freedom of the will." According to Searle, all rational activity presupposes free will. For rationality is possible only where one has a choice among various rational as well as irrational options. Unlike many philosophical tracts, Rationality in Action invites the reader to apply the author's ideas to everyday life. Searle shows, for example, that contrary to the traditional philosophical view, weakness of will is very common. He also points out the absurdity of the claim that rational decision making always starts from a consistent set of desires. Rational decision making, he argues, is often about choosing between conflicting reasons for action. In fact, humans are distinguished by their ability to be rationally motivated by desire-independent reasons for action. Extending his theory of rationality to the self, Searle shows how rational deliberation presupposes an irreducible notion of the self. He also reveals the idea of free will to be essentially a thesis of how the brain works. (shrink)

The paper distinguishes between instrumental reasons and instrumental rationality. It argues that instrumental reasons are not reasons to take the means to our ends. It further argues that there is no distinct form of instrumental reasoning or of instrumental rationality. In part the argument proceeds through a sympathetic examination of suggestions made by M. Bratman, J. Broome, and J. Wallace, though the accounts of instrumental rationality offered by the last two are criticised.

In this paper, I argue that, just as the problem of unconceived alternatives provides a basis for a New Induction on the History of Science to the effect that a realist view of science is unwarranted, the problem of unconceived objections provides a basis for a New Induction on the History of Philosophy to the effect that a realist view of philosophy is unwarranted. I raise this problem not only for skepticism’s sake but also for the sake of making a (...) point about philosophical argumentation, namely, that anticipating objections to one’s claim is not the same as supporting one’s claim. In other words, defending p from objections does not amount to support or evidence for p. This, in turn, presents dialectical and pragma-dialectical approaches to argumentation with the following question: does proper argumentation require that arguers anticipate and respond to unconceived objections? (shrink)

Relativism is usually a derogatory word in philosophical bioethics in the West. If people make the mistake of trying to understand radically “different” points of view, an accusation of relativism is quickly forthcoming. But why should this be an accusation? My aim in this paper is to demonstrate that it should not.

Synthese: An International Journal for Epistemology, Logic and Philosophy of Science, 157, 2007, 197-240. Published version available at: http://www.springerlink.com/content/q9402gv46t415504/fulltext.pdf.

Seneca in his Moral Epistles to Lucilium ridicules Protagoras’ claim that both sides of any position can be equally well argued. Cicero, on the contrary, in the surviving fragments of his dialogue, the Republic, maintains in the person of Laelius that the thorough exploration of the strengths and weaknesses of any position pro and con is the best and often the only dialectical avenue to the discovery of difficult truths. There are therefore at least two sides to the issue of (...) whether philosophers ought to address their arguments to the two sides of any issue. This paper examines the epistemic advantages and disadvantages of the same reasoning agent playing both roles of advocate and critic, as opposed to encouraging only distinct independently minded reasoning agents each to consider any of the opposing sides of an issue in dispute. The question in argumentation theory posed by this inquiry in simplest terms is whether a single thinker considering both sides of an issue is more able to arrive at truth, or whether, as the popular adage has it, two minds are inherently dialectically better than one. The answer proposed here is that it does not matter provided that the conflict of opposing views are in some manner resolved with the sincere intention of arriving at the truth. (shrink)

Relativism is usually a derogatory word in philosophical bioethics in the West. If people make the mistake of trying to understand radically “different” points of view, an accusation of relativism is quickly forthcoming. But why should this be an accusation? My aim in this paper is to demonstrate that it should not.

My thesis is that morality arises when a group of people reach an implicit agreement or come to a tacit understanding about their relations with one another. Part of what I mean by this is that moral judgments - or, rather, an important class of them - make sense only in relation to and with reference to one or another such agreement or understanding. This is vague, and I shall try to make it more precise in what follows. But it (...) should be clear that I intend to argue for a version of what has been called moral relativism. (shrink)

This paper sets out to explore the relation between social argumentation and inner debate by taking into account suggestions from argumentation studies and from social and discursive psychology. It develops Dascal’s (2005) claim that there are metonymical and structural relations between the two realms of debate by substantiating it with data taken from international migrants’ inner debates at moments of difficult decisions. The data are drawn from the experience of migrating mothers who have to decide whether to go back or (...) to remain in their host country (the UK). I show that others are present in migrants’ multivoiced decisions in two important senses: first, inner debates can be reconstructed as critical discussions (van Eemeren and Grootendorst 1984). Second, the locus from analogy has the special function of allowing the comparison between the migrant’s experience and someone else’s experience. (shrink)

This paper sets out to explore the relation between social argumentation and inner debate by taking into account suggestions from argumentation studies and from social and discursive psychology. It develops Dascal’s claim that there are metonymical and structural relations between the two realms of debate by substantiating it with data taken from international migrants’ inner debates at moments of difficult decisions. The data are drawn from the experience of migrating mothers who have to decide whether to go back or to (...) remain in their host country. I show that others are present in migrants’ multivoiced decisions in two important senses: first, inner debates can be reconstructed as critical discussions. Second, the locus from analogy has the special function of allowing the comparison between the migrant’s experience and someone else’s experience. (shrink)

Over the past 20 years, there has been a huge amount of work on which things you can kill in self‐defense and why. This paper surveys that work.

Intentional explanation and attributions of mentality -- International systems -- Reply to Arbib and Gunderson -- Brain writing and mind reading -- The nature of theory in psychology -- Skinner skinned -- Why the law of effect will not go away -- A cure for the common code? -- Artificial intelligence as philosophy and as psychology -- Objects of consciousness and the nature of experience -- Are dreams experiences? -- Toward a cognitive theory of consciousness -- Two approaches to mental (...) images -- Why you can't make a computer that feels pain -- Free will and personhood -- Mechanism and responsibility -- The abilities of men and machines -- Conditions of personhood -- On giving libertarians what they say they want -- How to change your mind -- Where am I? (shrink)

He further argues that it is necessary to rethink traditional conceptions of argument, and to find a position that avoids the limitations of both the highly abstract approach of formal logic and the highly contextualized approaches of rhetoric and communication theory.".

In this much-anticipated book, Jonathan Dancy offers the only available full-scale treatment of particularism in ethics, a view with which he has been associated for twenty years. Dancy now presents particularism as the view that the possibility of moral thought and judgement does not in any way depend on an adequate supply of principles. He grounds this claim on a form of reasons-holism, holding that what is a reason in one case need not be any reason in another, and maintaining (...) that moral reasons are no different in this respect from others. Ethics Without Principles offers detailed treatment and criticism of opposing positions of all sorts, with useful summaries. It also contains three chapters on the nature of what Dancy calls 'contributory' reasons, which, though the topic of much interest at the moment, are not often discussed in anything like the detail given here. And it offers a distinctive form of value-holism to go with the holism of reasons. As Dancy's definitive statement on particularism, the book will be required reading for all those working on moral philosophy and ethical theory. (shrink)

The claim that argumentation has no proper role in either philosophy or education, and especially not in philosophical education, flies in the face of both conventional wisdom and traditional pedagogy. There is, however, something to be said for it because it is really only provocative against a certain philosophical backdrop. Our understanding of the concept "argument" is both reflected by and molded by the specific metaphor that argument-is-war, something with winners and losers, offensive and defensive moments, and an essentially adversarial (...) structure. Such arguments may be suitable for teaching a philosophy, but not for teaching philosophy. Surely, education and philosophy do not need to be conceived as having an adversarial essence-if indeed they are thought to have any essence at all. Accordingly, philosophy and education need more pragmatic goals than even Pierce's idealized notion of truth as the end of inquiry, e.g., the simple furtherance of inquiry. For this, new metaphors for framing and understanding the concept of argumentation are needed, and some suggestions in that direction will be considered. (shrink)

This discussion reviews the thinking of some prominent philosophers of argument to extract principles common to their thinking. It shows that a growing concern with dialogical pragmatics is better appreciated as a part of applied ethics than of applied epistemology. The discussion concludes by indicating a possible consequence for philosophy of argument and invites further discussion by asking whether argumentation philosophy has an implicit, underlying moral, or even political, posture.

The paper's thesis is that dialogue is not an adequate model for all types of argument. The position of Walton is taken as the contrary view. The paper provides a set of descriptions of dialogues in which arguments feature in the order of the increasing complexity of the argument presentation at each turn of the dialogue, and argues that when arguments of great complexity are traded, the exchanges between arguers are turns of a dialogue only in an extended or metaphorical (...) sense. It argues that many of the properties of engaged back-and-forth exchanges of paradigmatic argument dialogues are not found in ‘solo’ arguments, and that at least some of the norms appropriate to the former type of argument, such as some of the pragma-dialectical rules of van Eemeren and Grootendorst's model, do not apply to the latter. (shrink)

In this paper we defend a particular version of the epistemic approach to argumentation. We advance some general considerations in favor of the approach and then examine the ways in which different versions of it play out with respect to the theory of fallacies, which we see as central to an understanding of argumentation. Epistemic theories divide into objective and subjective versions. We argue in favor of the objective version, showing that it provides a better account than its subjectivist rival (...) of the central fallacy of begging the question. We suggest that the strengths of the objective epistemic theory of fallacies provide support for the epistemic approach to argumentation more generally. (shrink)

This chapter contains sections titled: The Nature of Critical Thinking Critical Thinking: Skills/Abilities and Dispositions Critical Thinking and the Problem of Generalizability The Relationship Between Critical Thinking and Creative Thinking “Critical Thinking” and Other Terms Referring to Thinking Critical Thinking and Education Critiques of Critical Thinking Conclusion.

In this paper we describe an approach to practical reasoning, reasoning about what it is best for a particular agent to do in a given situation, based on presumptive justifications of action through the instantiation of an argument scheme, which is then subject to examination through a series of critical questions. We identify three particular aspects of practical reasoning which distinguish it from theoretical reasoning. We next provide an argument scheme and an associated set of critical questions which is able (...) to capture these features. In order that both the argument scheme and the critical questions can be given precise interpretations we use the semantic structure of an Action-Based Alternating Transition System as the basis for their definition. We then work through a detailed example to show how this approach to practical reasoning can be applied to a problem solving situation, and briefly describe some other previous applications of the general approach. In a second example we relate our account to the social laws paradigm for co-ordinating multi-agent systems. The contribution of the paper is to provide firm foundations for an approach to practical reasoning based on presumptive argument in terms of a well-known model for representing the effects of actions of a group of agents. (shrink)

In this paper we consider persuasion in the context of practical reasoning, and discuss the problems associated with construing reasoning about actions in a manner similar to reasoning about beliefs. We propose a perspective on practical reasoning as presumptive justification of a course of action, along with critical questions of this justification, building on the account of Walton. From this perspective, we articulate an interaction protocol, which we call PARMA, for dialogues over proposed actions based on this theory. We outline (...) an axiomatic semantics for the PARMA Protocol, and discuss two implementations which use this protocol to mediate a discussion between humans. We then show how our proposal can be made computational within the framework of agents based on the Belief-Desire-Intention model, and illustrate this proposal with an example debate within a multi agent system. (shrink)

We make choices all the time - about trivial matters, about how to spend our money, about how to spend our time, about what to do with our lives. And we are also constantly judging the decisions other people make as rational or irrational. But what kind of criteria are we applying when we say that a choice is rational? What guides our own choices, especially in cases where we don't have complete information about the outcomes? What strategies should be (...) applied in making decisions which affect a lot of people, as in the case of government policy? This book explores what it means to be rational in all these contexts. It introduces ideas from economics, philosophy, and other areas, showing how the theory applies to decisions in everyday life, and to particular situations such as gambling and the allocation of resources. ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable. (shrink)

Beginning with a discussion of the Informal Logic Movement and the renewed interest in critical thinking in education, this book critically assesses the work of Robert Ennis, Richard Paul and John McPeck.