Most infonnallogic texts and articles assume a verbal account of reasoning which defines "argument" as a set of sentences. The present paper broadens this definition in order to account for "visual arguments" which are communicated with nonverbal visual images. Standard approaches to verbal arguments are extended in a way that allows them to explain and evaluate visual argumentation.

The analysis of multimodal argumentation in advertising is a crucial and problematic area of research. While its importance is growing in a time characterized by images and pictorial messages, the methods used for interpreting and reconstructing the structure of arguments expressed through verbal and visual means capture only isolated dimensions of this complex phenomenon. This paper intends to propose and illustrate a methodology for the reconstruction and analysis of “double-mode” arguments in advertisements, combining the instruments developed in social (...) semiotics, pragmatics, and argumentation theory. An advertisement is processed through a five-step path. The analysis of its context, text genre, and images leads to a first representation of the messages that it encodes both pictorially and verbally (step 1). These first semantic representations are further enriched by including their polyphonic articulations and presuppositions (step 2), their explicatures (step 3), and their dialogical functions and illocutionary forces (step 4). These pragmatic steps retrieve the commitment structure of the ad, which allows a further argument analysis conducted through argumentation schemes (step 5). (shrink)

Our aim is to point out some differences between verbal and visual arguments, promoting the rhetorical perspective of argumentation beyond the relevance of logic and pragmatics. In our view, if it is to be rational and successful, film as (visual) argumentation must be addressed to spectators who hold informed beliefs about the theme watched on the screen and the medium’s constraints and conventions. In our reflections to follow, we apply rhetorical analysis to film as a (...) symbolic, human, and communicative act that may sometimes be understood as a visually laid out argument. As a mixture of visual, auditory, and verbal stimuli, film demands active and complex interpretation and (re)construction. Our suggestion is to focus on five different but interrelated elements. The reconstruction and evaluation of the visual argument will be based on those elements, and the whole process will be one of visual argumentation. (shrink)

What rational foundation underlies argument-critical judgements? What are the canons of argument criticism and how are they to be "justified"? This paper explores an analogy between art- and argument-criticism and argues that the analogy promises not only to illuminate the nature of argument criticism and capture the central goals of instruction in informal logic, but also to resolve fundamental problems at the foundations of normative theory of argument concerning the "justification" of standards of reasoning.

This is a critical examination of Antoine Arnauld's Logic or the Art of Thinking (1662), commonly known as the Port-Royal Logic. Rather than reading this work from the viewpoint of post-Fregean formal logic or the viewpoint of seventeenth-century intellectual history, I approach it with the aim of exploring its relationship to that contemporary field which may be labeled informal logic and/or argumentation theory. It turns out that the Port-Royal Logic is a precursor of (...) this current field, or conversely, that this field may be said to be in the same tradition. (shrink)

The “extreme consequence” is a very common pattern in advertising messages that presents an odd, even negative, situation resulting from the use of the advertised product as a good reason to buy it. By analyzing selected advertisements employing this pattern using the conceptual integration theory and the Argumentum Model of Topics, we aim to understand how “extreme consequence” works at the rhetorical and argumentative levels. The analyses allow us to detect the typical, generic, cognitive, and argumentative structure underlying the pattern (...) and to identify the rhetorical and argumentative role played by its main components, namely exaggeration and cause-effect relation. (shrink)

The issue of whether or not there are visual arguments has been an issue in informal logic and argumentation theory at least since 1996. In recent years, books, sections of prominent conferences and special journals issues have been devoted to it, thus significantly raising the profile of the debate. In this paper I will attempt to show how the views of the later Wittgenstein, particularly his views on images and the no- tion of “picturing”, can be (...) brought to bear on the question of whether there are such things as “purely visual” arguments. I shall draw on Wittgenstein’s remarks in the Blue and Brown Books and in Philosophical Investigations in order to argue that al- though visual images may occur as elements of argumentation, broadly conceived, it is a mistake to think that there are purely visual arguments, in the sense of illative moves from premises to conclusions that are conveyed by images alone, without the support or framing of words. (shrink)

Social advertising often employs persuasive imagery in support of a morally laden cause. These visual arguments can take the form of veridical representations of the given situation or the form of purposeful visual blends. Both visual routes to persuasion have serious ethical issues to confront. In what concerns the purportedly veridical images, controversies about picture retouching and framing have cast many doubts on their success in offering unmediated access to a given reality. Editorial interests have proven far (...) too influential on the destiny of what and how is presented to the audience from the amount of visual material available on a topic. Even when the audience is certain that photos are not doctored, the use of veridical images may be seen as unethical. Their disproportionate affective impact may lead the audience to hold biased opinions, since other concerns may be impossible to capture in a vivid picture. Visual blends may be the answer to this problem, employing the fictional or the figurative to help the viewer grasp the moral anatomy of a given situation. Their generous use of figurative meaning may be seen as their strength and their weakness at the same time. It makes them less likely to face accusations of distorting reality, because they do not claim to be windows on reality per se. At the same time, it makes them vulnerable to interpretations that miss their true point – one might appreciate the artistry of a visual metaphor or a visual pun and fail to consider the statement it makes about a given situation. Contemporary philosophical approaches to the place of visuals in moral persuasion inform my analysis of the use of visual arguments in charity-oriented advertising. (shrink)

Informal Logic, Argumentation Theory and Artificial Intelligence.

This is an introductory guidebook to the basic principles of how to construct good arguments and how to criticeze bad ones. It is non-technical in its approach and is based on 150 key examples, each discussed and evaluated in clear, illustrative detail. Professor Walton, a leading authority in the field of informal logic, 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. Among the many subjects covered are: forms of valid argument, relevance, appeals to emotion, personal attack, uses and abuses of expert opinion, problems in deploying statistics, loading terms, equivocation, arguments from analogy, and techniques of posing, replying to, and criticizing questions. The book will be ideally suited to courses in informal logic and in the introduction to philosophy. It will also prove valuable to studetns of pragmatics, rhetoric, and speech communication. (shrink)

This book analyzes recent artistic and activist projects in order to conceptualize the new roles and goals of a critical theory and practice of art and photography. Vered Maimon argues that current artistic and activist practices are no longer concerned with the "politics of representation" and the critique of the spectacle, but with a "politics of rights" and the performative formation of shared yet highly contested public domains. The book thus offers a critical framework in which to rethink the artistic, (...) the activist, and the political under globalization. The primary focus is on the ways contemporary artists and activists examine political citizenship as a paradox where subjects are struggling to acquire rights whose formulation rests on attributes they allegedly don't have; while the universal political validity of these rights presupposes precisely the abstraction of every form of difference, rights for all. The book will be of interest to scholars working in art history, contemporary art, photography theory, visual culture, cultural studies, critical theory, political theory, human rights, and activism. (shrink)

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. (shrink)

Georges Didi-Huberman's study is concerned with epistemological and ethical questions that arise from visual representations of the Shoah, while Michael Fried's is concerned with the ontological possibilities explored by contemporary art photography. The books have two things in common: an argument against postmodern skepticism, and an insistence that photography has become a field in which questions of history, truth, and authenticity are being explored with particular acuity. Rather than reject even the possibility that photographs have something to tell us (...) about the Shoah, Didi-Huberman shows that they can offer important insights into the difficulties and the possibilities of apprehending some aspects of the past.Fried shows that contemporary photographic work has taken on the ambitions of high modernism by accepting the challenge of “to-be-seenness.” Photography as a “historical practice” does not escape from the difficulties of evidence and of the “constructed” nature of historical understanding; photography functions neither as a pure trace of the past, nor as a mere invitation to spectacle. (shrink)

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. (shrink)

IntroductionIf we were to identify the beginning of the study of visual argumentation, we would have to choose 1996 as the starting point. This was the year that Leo Groarke published “Logic, art and argument” in Informal logic, and it was the year that he and David Birdsell co-edited a special double issue of Argumentation and Advocacy on visual argumentation . Among other papers, the issue included Anthony Blair’s “The possibility and actuality (...) of visual arguments”. It was also the year that Gail J. Chryslee, Sonja K. Foss and Arthur L. Ranney published their short text on “The construction of claims in visual argumentation” , stating that even though theorists may know a great deal about the process of argumentation, “virtually none of this knowledge is applicable to visual argumentation […] because of the properties that distinguish visual imagery from discursive symbols” .Texts on visual rhetoric have been written as far back as the early 1980s, .. (shrink)

Over the past 60 years there have been tremendous advances made in Argumentation Theory. One crucial advance has been the move from the investigation of static arguments to a concern with dialogic interactions in concrete contexts. This focus has entailed a slow shift toward involving both non-logical and non-discursive elements in the analysis of an argument. I argue that the traditional attitude Informal Logic has displayed toward emotion can be and ought be moderated. In particular, I examine (...) the role of emotion in everyday argumentation, and how Informal Logic can encompass it alongside the more traditional logical mode of communication. (shrink)

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. (shrink)

Informal logic offers a radical new perspective on the evaluation of arguments. But little work has been done on how deep concepts in the logical foundations of argument need to be modified in light of such efforts. This paper offers an indication of what might be done by sketching a new approach to the theory of entailment, truth and relevance.

Informal logic offers a radical new perspective on the evaluation of arguments. But little work has been done on how deep concepts in the logical foundations of argument need to be modified in light of such efforts. This paper offers an indication of what might be done by sketching a new approach to the theory of entailment, truth and relevance.

This book presents the current state of the art regarding the application of logical tools to the problems of theory and practice of lawmaking. It shows how contemporary logic may be useful in the analysis of legislation, legislative drafting and legal reasoning concerning different contexts of lawmaking. Elaborations of the process of lawmaking have variously emphasised its political, social or economic aspects. Yet despite strong interest in logical analyses of law, questions remains about the role of logical tools in (...) lawmaking. This volume attempts to bridge that gap, or at least to narrow it, drawing together some important research problems-and some possible solutions-as seen through the work of leading contemporary academics. The volume encompasses 20 chapters written by authors from 16 countries and it presents diversified views on the understanding of logic (from strict mathematical approaches to the informal, argumentative ones) and differentiated choices concerning the aspects of lawmaking taken into account. The book presents a broad set of perspectives, insights and results into the emerging field of research devoted to the logical analysis of the area of creation of law. How does logic inform lawmaking? Are legal systems consistent and complete? How can legal rules be represented by means of formal calculi and visualization techniques? Does the structure of statutes or of legal systems resemble the structure of deductive systems? What are the logical relations between the basic concepts of jurisprudence that constitute the system of law? How are theories of legal interpretation relevant to the process of legislation? How might the statutory text be analysed by means of contemporary computer programs? These and other questions, ranging from the theoretical to the immediately practical, are addressed in this definitive collection. (shrink)

This book brings together in one place David Hitchcock’s most significant published articles on reasoning and argument. In seven new chapters he updates his thinking in the light of subsequent scholarship. Collectively, the papers articulate a distinctive position in the philosophy of argumentation. Among other things, the author:• develops an account of “material consequence” that permits evaluation of inferences without problematic postulation of unstated premises.• updates his recursive definition of argument that accommodates chaining and embedding of arguments and allows (...) any type of illocutionary act to be a conclusion. • advances a general theory of relevance.• provides comprehensive frameworks for evaluating inferences in reasoning by analogy, means-end reasoning, and appeals to considerations or criteria.• argues that none of the forms of arguing ad hominem is a fallacy.• describes proven methods of teaching critical thinking effectively. (shrink)

To illustrate the development of argumentation theory, the paper traces the journey of the pragma-dialectical theory as it widened its scope, step by step, from an abstract model of critical discussion to the complexities of actual argumentative discourse. It describes how, having contextualized, empiricalized and formalized their approach, pragma-dialecticians are now putting the theory’s analytical instruments to good use in identifying prototypical argumentative patterns in specific communicative activity types in the various communicative domains. This means that they can now (...) start answering the crucial question about the typical characteristics of their discourse asked by interested lawyers, politicians, academics and other practitioners of argumentation. (shrink)

To illustrate the development of argumentation theory, the paper traces the journey of the pragma-dialectical theory as it widened its scope, step by step, from an abstract model of critical discussion to the complexities of actual argumentative discourse. It describes how, having contextualized, empiricalized and formalized their approach, pragma-dialecticians are now putting the theory’s analytical instruments to good use in identifying prototypical argumentative patterns in specific communicative activity types in the various communicative domains. This means that they can now (...) start answering the crucial question about the typical characteristics of their discourse asked by interested lawyers, politicians, academics and other practitioners of argumentation. (shrink)

By Maurice A. Finocchiaro Studies in Logic, Logic and Argumentation, Vol. 42. London: College Publications, 2013. Pp. vii, 1-279. ISBN 978-1-84890-097-4. UK£12 US$17.10 CDN$21.12.

In an attempt to explore the role of argumentation in scientific inquiry, I explore the conception of argument that appears fruitful in the light of the recent trends in the philosophy of science, away from logical empiricism, and toward a greater emphasis on change, disagreement, and history. I begin by contrasting typical instances philosopers’ theories of both empiricism and apriorism, with typical instances of scientists’ uses of these two attitudes, suggesting that such practice shows a judiciousness lacking in epistemological (...) theory. Then I examine at some length three important version of scientific judgement, namely Einstein's opportunism, Boltzmann's pluralism, and Huygens's eclecticism. I go on to discuss some recent work in the philosophy of science, exploring connections between the notion of judgment and Feyerabend's anarchism, Harold Brown's view of rationality, and Dudley Shapere's analysis of scientific change. All of this suggests a notion of argument in the sense of informallogic, and I examine some aspects of Galileo's work in its terms. (shrink)

Topics covered in Discrete Mathematics have become essential tools in many areas of studies in recent years. This is primarily due to the revolution in technology, communications, and cyber security. The book treats major themes in a typical introductory modern Discrete Mathematics course: Propositional and predicate logic, proof techniques, set theory (including Boolean algebra, functions and relations), introduction to number theory, combinatorics and graph theory. An accessible, precise, and comprehensive approach is adopted in the treatment of each topic. The (...) ability of abstract thinking and the art of writing valid arguments are emphasized through detailed proof of (almost) every result. Developing the ability to think abstractly and roguishly is key in any areas of science, information technology and engineering. Every result presented in the book is followed by examples and applications to consolidate its comprehension. The hope is that the reader ends up developing both the abstract reasoning as well as acquiring practical skills. All efforts are made to write the book at a level accessible to first-year students and to present each topic in a way that facilitates self-directed learning. Each chapter starts with basic concepts of the subject at hand and progresses gradually to cover more ground on the subject. Chapters are divided into sections and subsections to facilitate readings. Each section ends with its own carefully chosen set of practice exercises to reenforce comprehension and to challenge and stimulate readers. As an introduction to Discrete Mathematics, the book is written with the smallest set of prerequisites possible. Familiarity with basic mathematical concepts (usually acquired in high school) is sufficient for most chapters. However, some mathematical maturity comes in handy to grasp some harder concepts presented in the book. (shrink)

This book illustrates the program of Logical-Informational Dynamics. Rational agents exploit the information available in the world in delicate ways, adopt a wide range of epistemic attitudes, and in that process, constantly change the world itself. Logical-Informational Dynamics is about logical systems putting such activities at center stage, focusing on the events by which we acquire information and change attitudes. Its contributions show many current logics of information and change at work, often in multi-agent settings where social behavior is essential, (...) and often stressing Johan van Benthem's pioneering work in establishing this program. However, this is not a Festschrift, but a rich tapestry for a field with a wealth of strands of its own. The reader will see the state of the art in such topics as information update, belief change, preference, learning over time, and strategic interaction in games. Moreover, no tight boundary has been enforced, and some chapters add more general mathematical or philosophical foundations or links to current trends in computer science. The theme of this book lies at the interface of many disciplines. Logic is the main methodology, but the various chapters cross easily between mathematics, computer science, philosophy, linguistics, cognitive and social sciences, while also ranging from pure theory to empirical work. Accordingly, the authors of this book represent a wide variety of original thinkers from different research communities. And their interconnected themes challenge at the same time how we think of logic, philosophy and computation. Thus, very much in line with van Benthem's work over many decades, the volume shows how all these disciplines form a natural unity in the perspective of dynamic logicians (broadly conceived) exploring their new themes today. And at the same time, in doing so, it offers a broader conception of logic with a certain grandeur, moving its horizons beyond the traditional study of consequence relations. (shrink)

Informal logic began in the 1970s as a critique of then-current theoretical assumptions in the teaching of argument analysis and evaluation in philosophy departments in the U.S. and Canada. The last 35 years have seen significant developments in informal logic and critical thinking theory. The paper is a pilot study of the influence of these advances in theory on what is taught in courses on argument analysis and critical thinking in U.S. and Canadian philosophy departments. Its (...) finding, provisional and much-qualified, is that the theoretical developments and refinements have had limited impact on instruction in leading philosophy departments. (shrink)

A "good" arguer is like an architect with a penchant for civil and civic engineering. Such an arguer can design and present their reasons artfully about a variety of topics, as good architects do with a plenitude of structures and in various environments. Failures in this are rarely hidden for long, as poor constructions reveal themselves, often spectacularly, so collaboration among civical engineers can be seen as a virtue. Our logical virtues should be analogous. When our arguments fail due to (...) being uncivil and demagogic, since we inhabit the arguments we build, we are all crushed beneath our flawed reasoning. This mixed metaphor takes us to a self-referential analysis of argumentation, analogy, and humor. I argue that good argumentation strives to collaboratively convince rather than belligerently persuade. A convincing means toward this end is through humorous analogical arguments, whether the matter at hand is ethical, logical, theological, phenomenological, epistemological, metaphysical, political, or about baseball. (shrink)

Informal logic is an attempt to develop a logic that can assess and analyze the arguments that occur in natural language discourse. Discussions in the field may address instances of scientific, legal, and other technical forms of reasoning, but the overriding aim has been a comprehensive account of argument that can explain and evaluate the arguments found in discussion, debate and disagreement as they manifest themselves in daily life — in social and political commentary; in news reports (...) and editorials in the mass media ; in advertising and corporate and governmental communications; and in personal exchange. (shrink)

Grennan bases his evaluation of arguments on two criteria: logical adequacy and pragmatic adequacy. He asserts that the common formal logic systems, while logically sound, are not very useful for evaluating everyday inferences, which are almost all deductively invalid as stated. Turning to informal logic, he points out that while more recent informal logic and critical thinking texts are superior in that their authors recognize the need to evaluate everyday arguments inductively, they typically cover only (...) inductive fallacies, ignoring the inductively sound patterns frequently used in successful persuasion. To redress these problems, Grennan introduces a variety of additional inductive patterns. Concluding that informal logic texts do not encourage precision in evaluating arguments, Grennan proposes a new argument evaluation procedure that expresses judgments of inferential strength in terms of probabilities. Based on theories of Stephen Toulmin, Roderick Chisholm, and John Pollock, his proposed system allows for a more precise judgment of the persuasive force of arguments. (shrink)

In this overview article, we first explain what we take informal logic to be, discussing misconceptions and distinguishing our conception of it from competing ones; second, we briefly catalogue recent informal logic research, under 14 headings; third, we suggest four broad areas of problems and questions for future research; fourth, we describe current scholarly resources for informal logic; fifth, we discuss three implications of informal logic for philosophy in particular, and take note (...) ofpractical consequences of a more general sort. (shrink)

This article discusses Harvey Siegel’s general justification of the epistemological theory of argumentation in his seminal essay “Arguing with Arguments." On the one hand, the achievements of this essay are honoured—in particular, a thorough differentiation of the different meanings of ‘argument’ and ‘argumentation,’ the semantic justification of the fundamentality of arguments as sequences of propositions, and the detailed critiques of alternative theories of argumentation. On the other hand, suggestions for strengthening the theory are added to Siegel's expositions, (...) which make different perspectives within the epistemological theory of argumentation recognisable. (shrink)

Using print ads and recognizing the role of visual images in argument (Groarke) and the presence of arguments in ads (Slade), this paper argues that the work of argumentation theorists from Aristotle to van Eemeren and Grootendorst can be used to support the thesis that ads are arguments. I cite as evidence definitions, demarcations, delineations, and descriptions of argument put forth by leading scholars in the field of argumentation. This includes Aristotle, Informal Logic, Toulmin (Claim, (...) Data, Warrant, Backing, Qualifier, Rebuttal), Johnson and Blair (argument as “reasons or evidence as grounds or support for an opinion”), Gilbert (Multi-Modal Argumentation), and van Eemeren and Grootendorst (argumentation as a social activity and pragma-dialectics). I show how, although just fitting a particular advertisement to someone’s definition does not mean that all ads are arguments, nevertheless, the fact that we can find in an ad all these elements from this variety of scholars over time, leaves us reasonably secure in stating that an ad is indeed an argument. Since my argument would be the same for practically any ad, I am using only one ad. I do, however, use the kind of ad that is least likely to seem to be an argument: an ad with few words, an ad which is mostly visual. If I can show how even an almost entirely visual ad can be analyzed as an argument using the terms of all these scholars of argumentation, I will maintain that most ads could be analyzed in the same way. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Forgeries and Art Evaluation:An Argument for Dualism in AestheticsTomas Kulka (bio)If a fake is so expert that even after the most thorough and trustworthy examination its authenticity is still open to doubt, is it or is it not as satisfactory a work of art as if it were unequivocally genuine? 1It is a wonderful moment in the life of a lover of art when he finds himself suddenly confronted (...) with a hitherto unknown painting by a great master, untouched, on the original canvas, and without any restoration, just as it left the painter's studio. And what a picture! Neither the beautiful signature... nor the pointillé on the bread which Christ is blessing, is necessary to convince us that we have here—I am inclined to say—the masterpiece of Johannes Vermeer of Delft... quite different from all his other paintings and yet every inch a Vermeer. In no other picture by the great master of Delft do we find such sentiment, such a profound understanding of the Bible story—a sentiment so nobly human expressed through the medium of highest art.2The author of these lines is Professor Abraham Bredius, the nestor of Holland's art historians and the greatest authority on seventeenth-century Dutch painting. The source is The Burlington Magazine for Connoisseurs, the most prestigious periodical for the history of art of the period. The year is 1937. The painting, however, is not a masterpiece of Vermeer but a fake produced by the mediocre Dutch artist Han van Meegeren.The Problem of ForgeryMany art dealers have been financially ruined, and many art historians academically discredited, because of incorrect attribution. Apart from the practical problems that worry curators and art historians, there is also a theoretical problem, which has become a subject of heated discussions since the late 1960s. The dispute gained a momentum with the publication of Nelson Goodman's Languages of Art. In its third chapter titled "Art and Authenticity," [End Page 58] which put the problem of forgeries on the agenda of contemporary aesthetics, Goodman states that a "philosopher of art caught without an answer to [the] question... why there is any aesthetic difference between a deceptive forgery and an original work... is at least as badly off as a curator of paintings caught taking a Van Meegeren Vermeer for a Vermeer."3Although the literature on the problem of forgeries is extensive, the answers that have been put forward fall roughly into three categories: the formalist answer, which states that there is no aesthetic difference between an original painting and a deceptive forgery; the reductionist answer, which claims that there is such a difference and that it can be traced to the minute physical differences between originals and its copies; and the historicist answer, which also asserts that there must be an aesthetic difference but claims that it stems from the different histories of the two objects.The most prominent proponent of the formalist approach is Monroe C. Beardsley. His theory is based on the assumption that "two objects that do not differ in any observable qualities cannot differ in aesthetic value."4 Aesthetic formalism, as the name suggests, maintains that works of art should be judged according to their form. Only the visual features of the painted surface—the configuration of its lines and colors, composition, spatial relations, texture, design, etc., are relevant for its appreciation. The subject of our evaluation is the finished product, not the information pertaining to the history of its production. Who, when, and where painted the picture, just like the intentions of the painter, are irrelevant for the assessment of its aesthetic qualities. Only the "internal" properties, that is, the properties of the "work itself," count. The "external" properties, by which Beardsley means anything that "relates to something existing before the work itself, to the manner in which it was produced, or its connection to antecedent objects," have no bearing on aesthetic value. Hence the conclusion that if fakes resemble the original "in their internal characteristics, so that no one could tell them apart just by looking at them" there can be no aesthetic difference between them.5 Originality is thus excluded... (shrink)

A Theory of Argument is an advanced textbook intended for students in philosophy, communications studies and linguistics who have completed at least one course in argumentation theory, information logic, critical thinking or formal logic. Containing nearly 400 exercises, Mark Vorobej develops a novel approach to argument interpretation and evaluation. One of the key themes of the book is that we cannot succeed in distinguishing good argument from bad arguments until we learn to listen carefully to others. Part (...) I develops a relativistic account of argument cogency that allows for rational disagreement. Part II offers a comprehensive and rigorous account of argument diagramming. Hybrid arguments are contrasted with linked and convergent arguments, and a novel technique is introduced for graphically recording disagreements with authorial claims. (shrink)

Michael Gilbert’s multi-modal theory of argument challenges earlier accounts of arguing assumed in formal and informal logic. His account of emotional, visceral, and kisceral modes of arguing rejects the assumption that all arguments must be treated as instances of one “logical mode.” This paper compares his alternative modes to other modes proposed by those who have argued for visual, auditory, and other “multimodal” modes of arguing. I conclude that multi-modal and multimodal (without the hyphen) modes are complementary. (...) Collectively, they represent an important attempt to radically expand the scope of informal logic and the argumentation that it studies. (shrink)

Rather than the art of putting forward logically valid arguments leading to Truth, argumentation is here viewed as the use of verbal means ensuring an agreement on what can be considered reasonable by a given group, on a more or less controversial matter. What is acceptable and plausible is always coconstructed by subjects engaging in verbal interaction. It is the dynamism of this exchange, realized not only in natural language, but also in a specific cultural framework, that has to (...) be accounted for. From this perspective, it is not enough to reconstruct patterns of reasoning. As logos is by definition both Reason and Language, abstract schemata have to be examined in their verbal realization in a given situation of discourse. Such an approach to arguments allows for a “thick” description taking into account their discursive and communicational aspects, as well as argumentation’s constitutive dialogism and its inscription in a set of common representations, opinions and beliefs (a doxa). This approach, exemplified by the analysis of a short text on stock options borrowed from the French newspaper Libération, is an attempt at establishing a dialogue between disciplines like argumentation theories, rhetorical criticism and discourse analysis. (shrink)

In a posthumous paper, Perelman discusses his decision to bring his theory of argumentation together with rhetoric rather than calling it an informal logic. This is due in part because of the centrality he gives to audience, and in part because of the negative attitude that informal logicians have to rhetoric. In this paper, I explore both of these concerns by way of considering what benefits Perelman’s work can have for informal logic, and what (...) insights the work of informal logicians might bring to the project of Perelman and Olbrechts-Tyteca. (shrink)

The so-called March of Progress depicts human evolution as a linear progression from mohkey to man. Shelley (1996) analyzed this image as a visual argument proceeding through "rhetorical" and "demonstrative" modes of visual logic. In this paper, I confirm and extend this view of visual logic by examining variations of the original March image. These variations show that each mode of visual logic can be altered or isolated in support of new conclusions. Furthermore, (...) the March can be included in a visual "frame" to produce new arguments, much as a verbal argument can be made a component of a new and larger argument. (shrink)

The philosophical logic of Stéphane Lupasco, based on the principles of dynamic opposition and a law of the included middle, offers a needed alternative to the still quasi-exclusive application of classical, binary logic to post-classical natural and social sciences, art theory and political and social action. The system of Lupasco, extended by Basarab Nicolescu by the principle of levels of reality, is grounded in the major discoveries in quantum physics, biology, mathematics and systems science of the twentieth century. (...) It leads to a conception of the unity of knowledge and to a rigorous description of the dynamics of the highest human faculties of consciousness, art and social justice. As one of the ‘pillars’ of transdisciplinarity, this logic provides an interpretation of the fundamental modes of functioning of the physical and mental universes and the emergence of the new reality of ‘cyber-space-time’. The argument is made that an understanding of the underlying logic is essential to the transdisciplinary perspective, practice and attitude. The concepts of Lupasco and Nicolescu are thus relevant to issues discussed in Technoetic Arts. (shrink)

Argument evaluation, one of the central problems in argumentation theory, consists in studying what makes an argument a good one. This paper proposes a formal approach to argument evaluation from the perspective of justification logic. We adopt a multi-agent setting, accepting the intuitive idea that arguments are always evaluated by someone. Two general restrictions are imposed on our analysis: non-deductive arguments are left out and the goal of argument evaluation is fixed: supporting a given proposition. Methodologically, our approach (...) uses several existing tools borrowed from justification logic, awareness logic, doxastic logic and logics for belief dependence. We start by introducing a basic logic for argument evaluation, where a list of argumentative and doxastic notions can be expressed. Later on, we discuss how to capture the mentioned form of argument evaluation by defining a preference operator in the object language. The intuitive picture behind this definition is that, when assessing a couple of arguments, the agent puts them to a test consisting of several criteria. As a result of this process, a preference relation among the evaluated arguments is established by the agent. After showing that this operator suffers a special form of logical omniscience, called preferential omniscience, we discuss how to define an explicit version of it, more suitable to deal with non-ideal agents. The present work exploits the formal notion of awareness in order to model several informal phenomena: awareness of sentences, availability of arguments and communication between agents and external sources. We discuss several extensions of the basic logic and offer completeness and decidability results for all of them. (shrink)

Scare Tactics, the first book on the subject, provides a theory of the structure of reasoning used in fear and threat appeal argumentation. Such arguments come under the heading of the argumentum ad baculum, the `argument to the stick/club', traditionally treated as a fallacy in the logic textbooks. The new dialectical theory is based on case studies of many interesting examples of the use of these arguments in advertising, public relations, politics, international negotiations, and everyday argumentation on (...) all kinds of subjects. Many of these arguments are amusing, once you see the clever tactic used; others are scary. Some of the arguments appear to be quite reasonable, while others are highly suspicious, or even outrageously fraudulent. In addition to the examples taken from logic textbooks, other cases treated come from a variety of sources, including political debates, legal arguments, and arguments from media sources, like magazine articles and television ads. The purpose of this book is to explain how such arguments work as devices of persuasion, and to develop a method for analyzing and evaluating their reasonable and fallacious uses in particular cases. The book shows how such arguments share a common structure, revealing several distinctive forms of argument nested within each other. Based on its account of this cognitive structure, the new dialectical theory presents methods for identifying, analyzing, and evaluating these arguments, as they are used in specific cases. The book is a scholarly contribution to argumentation theory. It is written in an accessible style, and uses many colorful and provocative examples of fear and threat appeal arguments that are suitable for classroom discussions. The matters treated will be of interest to professionals and students in law, critical thinking, advertising, speech communication, informal logic, cognitive science, rhetoric, and media studies. (shrink)

The first genuine appraisal of Virilio's contribution to contemporary art, photography, film, television and more. This collection of 13 original writings, including a newly translated piece by Virilio himself, is indispensable reading for all students and researchers of contemporary visual culture. Paul Virilio is one of the leading and most challenging critics of art and technology of the present period. Re-conceptualising the most enduring philosophical conventions on everything from technology and photography to literature, anthropology, cultural, and media studies through (...) his own original theories and arguments, Virilio's work has produced substantial debate, compelling readers to ask if his criticism is out of touch or out in front of traditional perspectives. (shrink)

The issue of the relationship between formal and informal logic depends strongly on how one understands these two designations. While there is very little disagreement about the nature of formal logic, the same is not true regarding informal logic, which is understood in various (often incompatible) ways by various thinkers. After reviewing some of the more prominent conceptions of informal logic, I will present my own, defend it and then show how informal (...) logic, so understood, is complementary to formal logic. (shrink)

Natural normativity describes the means whereby social and cultural controls are placed on argumentative behaviour. The three main components of this are Goals, Context, and Ethos, which combine to form a dynamic and situational framework. Natural normativity is explained in light of Pragma-dialectics, Informal Logic, and Rhetoric. Finally, the theory is applied to the Biro-Siegel challenge.

Many have adopted the view that informal logic is importantly dependent on epistemology . Finocchiaro has raised this issue in the context argumentation theory, as perhaps distinguished from informal logic A recent pair of issues of Informal Logic , guest edited by Christoph Lumer, was devoted to epistemological approaches to argumentation. On the other hand, both Johnson and Blair and Johnson have expressed reservations. In this paper I want to take another look (...) at the relationship between informal logic and epistemology. I will argue that there are reasons for skepticism regarding the Received View that have not been taken into consideration and fully appreciated by those who advocate some form of this view. (shrink)