That bootstrapping and Moorean reasoning fail to instantiate persuasive argumentation is an often informally presented but not systematically developed view. In this paper, I will argue that this unpersuasiveness is not determined by principles of justification transmission but by two straightforward principles of rationality, understood as a concept of internal coherence. First, it is rational for S to believe the conclusion of an argument because of the argument, only if S believes sufficiently many premises of the argument. Second, if S (...) doubts that a source _O_ is reliable and believes that information _i_ is delivered by _O_, then S rationally suspends judgment about the truth of _i_. This paper aims to accomplish two tasks. First, it provides a thorough analysis of why bootstrapping argumentation is not an instance of rational persuasion. Second, it contains a more general theory about preconditions and limits of persuasive argumentation. (shrink)

TED Talks are still an unexplored genre of argumentation in which narrative arguments are often used in TED speakers’ strategic maneuvering to support a standpoint. In the present study, I combine the constructs of narrative positioning (NP) and strategic maneuvering (SM) to offer a conceptualization of how narrative is used in pragmatic argumentation as well as provide an exemplary analysis of a specific case of narrative arguments that were used in Winch’s (How to practice emotional first aid. https://www.ted.com/talks/guy_winch_the_case_for_emotional_hygiene.2014, 2014) TED (...) Talk. The proposed integration aims to provide a theoretical framework and empirical tools for reconstructing narrative arguments through connecting the underlying formal structure of narrative with aspects of TED speakers’ strategic maneuvering. Drawing on NP and SM constructs, the critical analysis explores how Winch’s narratives or “small stories” were strategically manipulated to support his stance with regard to the importance of mental health and to examine whether or not the use of narrative arguments as argumentation moves helped to enhance the dialectical reasonableness and rhetorical effectiveness of Winch’s argument. The analysis shows that the macro context and the knowledge gap between TED speakers and the audience makes the use of narrative arguments extremely effective. Although narrative arguments often receive criticism about their validity in providing sufficient evidence for a standpoint, their dialectical power lies in the flexibility of describing events in different fashions to draw pragmatic inferences that support the speaker’s stance. The study fills an important gap in the literature as it integrates recent approaches in narrative theory in the reconstruction and evaluation of narrative arguments in TED Talks. (shrink)

Early Chinese thought enjoys a wide appeal, in the scholarly world as much as elsewhere, as people are keen on learning about the ideas of Confucius, Mencius, and other thinkers whose views have shaped traditional Chinese culture. In the study of early Chinese thought, emphasis has long been on what thinkers said, not on how they proffered their views. Even studies that do consider the how, tend to focus on logic and argumentation, rather than rhetoric. Fortunately, in the past few (...) decades growing attention has been paid to Chinese rhetoric which has led to an impressive number of publications. This work briefly outlines rhetoric in the West and in China. (shrink)

In this paper, I spell out and argue for a new epistemic theory of argumentation. Contrary to extant views, this theory is compatible with a pluralistic framework on argumentation, where the norms governing argumentation depend on the aim with which we engage in the practice. A domain of specifically epistemic argumentation is singled out, and I argue based on recent findings in modal epistemology that this domain is governed by the modal norm of safety; where a belief is safe just (...) in case it is produced by a method that would not easily produce a false belief. While this criterion is well-known and uncontroversial in epistemology, it has hitherto not been applied to epistemic theories of argumentation. I show that the norm allows for a novel and superior perspective of the relevance of the persistent interlocutor in argumentation theory, and on the relation between dialectical and epistemic norms more generally. (shrink)

“Is every definition persuasive?” If essentialist views on definition are rejected and a pragmatic account adopted, where defining is a speech act which fixes the meaning of a term, then a problem arises: if meanings are not fixed by the essence of being itself, is not every definition persuasive? To address the problem, we refer to Douglas Walton’s impressive intellectual heritage—specifically on the argumentative potential of definition. In finding some non-persuasive definitions, we show not every definition is persuasive. The persuasiveness (...) lies not in syntactic or semantic properties, but the context. We present this pragmatic account and provide rules for analysing and evaluating persuasive definition—a promising direction for further research. (shrink)

The detection of hate speech and fake news in political discourse is at the same time a crucial necessity for democratic societies and a challenge for several areas of study. However, most of the studies have focused on what is explicitly stated: false article information, language that expresses hatred, derogatory expressions. This paper argues that the explicit dimension of manipulation is only one – and the least problematic – of the risks of political discourse. The language of the unsaid is (...) much more dangerous and incomparably more difficult to detect, hidden in different types of fallacies and inappropriate uses of emotive language. Through a threefold coding scheme based on the instruments of argumentation theory and pragmatics, a corpus of argumentative tweets published by 4 politicians (Matteo Salvini, Donald Trump, Jair Bolsonaro, and Joseph Biden) within 6 months from their taking office (corresponding to the official end of their election campaign) is analyzed, detecting the types of argument, the fallacies, and the uses and misuses of “emotive words.” This coding results in the argumentation profiles of the speakers, which are compared statistically to show their different implicit strategies and deceptive tactics. (shrink)

One of the crucial problems of argumentation schemes as illustrated in (Walton, Reed & Macagno 2008) is their practical use for the purpose of analyzing texts and producing arguments. The high number and the lack of a classification criterion make this instrument extremely difficult to apply practically. The purpose of this paper is to analyze the structure of argumentation schemes and outline a possible criterion of classification based on alternative and mutually-exclusive possibilities. Such a criterion is based not on what (...) an argument is, but how it can be understood and interpreted. The schemes are grouped according to an end-means principle, which is strictly bound to the ontological structure of the conclusion and the premises. On this view, a scheme can be selected according to the intended or reconstructed purpose of an argument and the possible strategies that can be used to achieve it. (shrink)

The representation and classification of the structure of natural arguments has been one of the most important aspects of Aristotelian and medieval dialectical and rhetorical theories. This traditional approach is represented nowadays in models of argumentation schemes. The purpose of this article is to show how arguments are characterized by a complex combination of two levels of abstraction, namely, semantic relations and types of reasoning, and to provide an effective and comprehensive classification system for this matrix of semantic and quasilogical (...) connections. To this purpose, we propose a dichotomous criterion of classification, transcending both levels of abstraction and representing not what an argument is but how it is understood and interpreted. The schemes are grouped according to an end-means criterion, which is strictly bound to the ontological structure of the conclusion and the premises. On this view, a scheme can be selected according to the intended or reconstructed purpose of an argument and the possible strategies that can be used to achieve it. (shrink)

Argumentation schemes [1–3] are a relatively recent notion that continues an extremely ancient debate on one of the foundations of human reasoning, human comprehension, and obviously human argumentation, i.e., the topics. To understand the revolutionary nature of Walton’s work on this subject matter, it is necessary to place it in the debate that it continues and contributes to, namely a view of logic that is much broader than the formalistic perspective that has been adopted from the 20th century until nowadays. (...) With his book Argumentation schemes for presumptive reasoning, Walton attempted to start a dialogue between three different fields or views on human reasoning – one (argumentation theory) very recent, one (dialectics) very ancient and with a very long tradition, and one (formal logic) relatively recent, but dominating in philosophy. Argumentation schemes were proposed as dialectical instruments, in the sense that they represented arguments not only as formal relations, but also as pragmatic inferences in the sense that they depend on what the interlocutors share and accept in a given dialogical circumstance and affect their dialogical relation. In this introduction, the notion of argumentation scheme will be analyzed in detail, showing its different dimensions and its defining features which make them an extremely useful instrument in Artificial Intelligence. This theoretical background will be followed by a literature review on the uses of the schemes in computing, aimed at identifying the most important areas and trends, the most promising proposals, and the directions of future research. (shrink)

Douglas Walton’s multitudinous contributions to the study of argumentation seldom, if ever, directly engage with argumentation in mathematics. Nonetheless, several of the innovations with which he is most closely associated lend themselves to improving our understanding of mathematical arguments. I concentrate on two such innovations: dialogue types (§1) and argumentation schemes (§2). I argue that both devices are much more applicable to mathematical reasoning than may be commonly supposed.

By synthesizing the argumentation theory of new rhetoric with research on heuristics and motivated reasoning, we develop a conceptual view of argumentation based on reasoning motivations that sheds new light on the morality of decision-making. Accordingly, we propose that reasoning in eristic argumentation is motivated by psychological (e.g., anxiety reduction) or material (e.g., vested interests) gains that do not depend on resolving the problem in question truthfully. Contrary to heuristic argumentation, in which disputants genuinely argue to reach a practically rational (...) solution, eristic argumentation aims to defeat the counterparty rather than seeking a reasonable solution. Eristic argumentation is susceptible to arbitrariness and power abuses; therefore, it is inappropriate for making moral judgments with the exception of judgments concerning moral taboos, which are closed to argumentation by their nature. Eristic argumentation is also problematic for strategic and entrepreneurial decision-making because it impedes the search for the right heuristic under uncertainty as an ecologically rational choice. However, our theoretical view emphasizes that under extreme uncertainty, where heuristic solutions are as fallible as any guesses, pretense reasoning by eristic argumentation may be instrumental for its adaptive benefits. Expanding the concept of eristic argumentation based on reasoning motivations opens a new path for studying the psychology of reasoning in connection to morality and decision-making under uncertainty. We discuss the implications of our theoretical view to relevant research streams, including ethical, strategic and entrepreneurial decision-making. (shrink)

The aim of this article is to show how modifications of meaning can influence argumentation. I present the basic concept of so-called ‘semantic argumentation,’ its definition, and its different variants. I analyse the various kinds of argument in which meanings of terms are modified in support of a persuasive goal. The analysis of different semantic arguments reveals certain structures and patterns that are needed to construct a typology of such arguments. I thus outline a basic concept of argumentation based on (...) modifications of meaning, before presenting various examples of such arguments together with an analysis of their structures, and then, finally, constructing a typology for them. (shrink)

The New Rhetoric identifies the self-deliberator as one of three main types of audience. But such a turn toward the self is at odds with studies of contemporary argumentation, particularly social argumentation. Argumentation takes place “out there”, modifying the environments in which audiences operate. Equally interesting is the use of self-deliberation as a rhetorical strategy. Arguing with oneself, especially when that self is distanced in some way from the individual involved, employs self-deliberation beyond the ends that Perelman assigned to it. (...) In this paper, my goal is to explore the nature of the self-deliberator as an audience and self-deliberation as a rhetorical strategy employed in argumentation. (shrink)

The informal logic movement began as an attempt to develop – and teach – an alternative logic which can account for the real life arguing that surrounds us in our daily lives – in newspapers and the popular media, political and social commentary, advertising, and interpersonal exchange. The movement was rooted in research and discussion in Canada and especially at the University of Windsor, and has become a branch of argumentation theory which intersects with related traditions and approaches (notably formal (...) logic, rhetoric and dialectics in the form of pragma-dialectics). In this volume, some of the best known contributors to the movement discuss their views and the reasoning and argument which is informal logic’s subject matter. Many themes and issues are explored in a way that will fuel the continued evolution of the field. Federico Puppo adds an insightful essay which considers the origins and development of informal logic and whether informal logicians are properly described as a “school” of thought. In considering that proposition, Puppo introduces readers to a diverse range of essays, some of them previously published, others written specifically for this volume. (shrink)

The article develops and justifies, on the basis of the epistemological argumentation theory, two central pieces of the theory of evaluative argumentation interpretation: 1. criteria for recognizing argument types and 2. rules for adding reasons to create ideal arguments. Ad 1: The criteria for identifying argument types are a selection of essential elements from the definitions of the respective argument types. Ad 2: After presenting the general principles for adding reasons (benevolence, authenticity, immanence, optimization), heuristics are proposed for finding missing (...) reasons, for deductive arguments, e.g., semantic tableaux are suggested. (shrink)

Making arguments makes reasons apparent. Sometimes those reasons may affect audiences’ relationships to claims (e.g., accept, adhere). But an over-emphasis on audience effects encouraged by functionalist theories of argumentation distracts attention from other things that making arguments can accomplish. We advance the normative pragmatic program on argumentation through two case studies of how early advocates for women’s suffrage in the U.S. made reasons apparent in order to show that what they were doing wasn’t ridiculous. While it might be possible to (...) identify this as a new function of argumentation, we encourage instead attention to a more important question: explaining how all the diverse uses of argument have pragmatic force. (shrink)

We present a case study of how mathematicians write for mathematicians. We have conducted interviews with two research mathematicians, the talented PhD student Adam and his experienced supervisor Thomas, about a research paper they wrote together. Over the course of 2 years, Adam and Thomas revised Adam’s very detailed first draft. At the beginning of this collaboration, Adam was very knowledgeable about the subject of the paper and had good presentational skills but, as a new PhD student, did not yet (...) have experience writing research papers for mathematicians. Thus, one main purpose of revising the paper was to make it take into account the intended audience. For this reason, the changes made to the initial draft and the authors’ purpose in making them provide a window for viewing how mathematicians write for mathematicians. We examined how their paper attracts the interest of the reader and prepares their proofs for validation by the reader. Among other findings, we found that their paper prepares the proofs for two types of validation that the reader can easily switch between. (shrink)

Within the framework of pragma-dialectics, this paper analyzes the use of dissociations in the spokespersons’ replies at the press conferences held by the Chinese Ministry of Foreign Affairs between 2015 and 2017. As shown in the research results, to cut down the authority of their opponents in criticizing China and to convince the international general public of the Chinese standpoints, four subtypes of dissociation are used, which can be differentiated as: “distorted” Term I versus “authentic” Term II, “ambiguous” Term I (...) versus “univocal” Term II, “broadened” Term I versus “exact” Term II, and “narrowed” Term I versus “exact” Term II. The strategic maneuvering carried out by the spokespersons in confronting their immediate opponents by means of the various subtypes of dissociation is in the first place directed at their primary audience, i.e. the international general public. To make a convincing case, in using dissociations the spokespersons not only adapt in their strategic maneuvering to the demands of their primary audience but also in their selection from the topical potential and the presentational devices. (shrink)

Статья посвящена выявлению оснований доксологии Матса Розенгрена – шведского философа, который пытается реабилитировать доксу в теории познания и рассматривает возможность построения «протагорейской гносеологии». Доксология – это вариант натурализованной конструктивистской теории познания, развивающийся на базе риторической версии философской антропологии, где формулируется реалистичная версия субъекта познавательной деятельности. Познание, с точки зрения доксологии, – это преобразование человеческими коллективами мира и себя, предпосылкой которого является освоение объективированных результатов своей предшествующей деятельности. В ходе исследования использованы методы интерпретации и критический метод философии с опорой на принципы (...) историзма, непротиворечивости и системности рассмотрения. Показано, что выражением доксологической позиции и доксологического стиля мышления является неософистическая трактовка тезиса Протагора о человекомерности. Согласно этой трактовке, человек – это человечество, а не индивид; мерой, общей для всех людей, является логос, который формирует природу человека и мира в целом. В основе доксологической трактовки познавательной деятельности лежит схема функционального круга логоса и доксы. Содержательные предпосылки доксологического стиля мышления Розенгрен находит в работах П. Бурдьё, Л. Флека, Э. Кассирера, К. Касториадиса, в которых продемонстрировано, как фактически способы восприятия, мышления и действия, и способы производства, объективации и освоения опыта человеческих коллективов могут взаимозависимо конструировать друг друга. (shrink)

This article discusses how the study of metaphoric and more generally, figurative language use contributes to critical discourse analysis. It shows how cognitive linguists’ recognition of metaphor as a fundamental means of concept- and argument-building can add to CDA's account of meaning constitution in the social context. It then discusses discrepancies between the early model of conceptual metaphor theory and empirical data and argues that discursive-pragmatic factors as well as sociolinguistic variation have to be taken into account in order to (...) make cognitive analyses more empirically and socially relevant. In conclusion, we sketch a modified cognitive approach informed by Relevance Theory within CDA. (shrink)

We report on an exploratory study of the way eight mid-level undergraduate mathematics majors read and reflected on four student-generated arguments purported to be proofs of a single theorem. The results suggest that mid-level undergraduates tend to focus on surface features of such arguments and that their ability to determine whether arguments are proofs is very limited -- perhaps more so than either they or their instructors recognize. We begin by discussing arguments (purported proofs) regarded as texts and validations of (...) those arguments, i.e., reflections of individuals checking whether such arguments really are proofs of theorems. We relate the way the mathematics research community views proofs and their validations to ideas from reading comprehension and literary theory. We then give a detailed analysis of the four student-generated arguments and finally analyze the eight students' validations of them. (shrink)

Arguers sometimes cite a decision made in an earlier situation as a reason for making the equivalent decision in a later situation. I argue that there are two kinds of “case-to-case arguments”. First, there are arguments by precedent, which cite the mere existence of the past decision as a reason to decide in the same way again now, independent of the past decision’s merits. Second, there are case-to-case arguments from parralel reasoning which presuppose that the past decision was justified and (...) are used to show that an equivalent present decision would also be justified. Both arguments are a type of argument by analogy. They differ in their structures and conditions of cogency, even though they often look the same in presentation. Their similar appearance poses a risk of miss-evaluation and fallacious use. Therefore a clearly theorized distinction is important. (shrink)

A macroscope is proposed and tested here for the discovery of the unique argumentative footprint that characterizes how a collective manages differences and pursues disagreement through argument in a polylogue. The macroscope addresses broader analytic problems posed by various conceptualizations of large-scale argument, such as fields, spheres, communities, and institutions. The design incorporates a two-tier methodology for detecting argument patterns of the arguments performed in arguing by an interactive collective that produces views, or topographies, of the ways that issues are (...) generated in the making and defending of standpoints. The design premises for the macroscope build on insights about argument patterns from pragma-dialectical theory by incorporating research and theory on disagreement management and the Argumentum Model of Topics. The design reconceptualizes prototypical and stereotypical argument patterns for characterizing large-scale argumentation. A prototype of the macroscope is tested on data drawn from six threads about oil-drilling and fracking from the subreddit Changemyview. The implementation suggests the efficacy of the macroscope’s design and potential for identifying what communities make controversial and how the disagreement space in a polylogue is managed through stereotypical argument patterns in terms of claims/premises, inferential relations, and presentational devices. (shrink)

In Giving Reasons: A Linguistic-pragmatic-approach to Argumentation Theory (Springer, 2011), I provide a new model for the semantic and pragmatic appraisal of argumentation. This model is based on a characterization of argumentation as a second order speech-act complex. I explain the advantages of this model respecting other proposals within Argumentation Theory, such as Pragma-dialectics, Informal Logic, the New Rhetoric or the Epistemic Approach.

Brand Equity Planning with Structuralist Rhetorical Semiotics furnishes an innovative conceptual model and methodology for brand equity planning, with view to addressing a crucial gap in the marketing and semiotic literatures concerning how advertising multimodal textual elements may be transformed into brand associations, with an emphasis on rhetorical relata as modes of connectivity between a brand’s surface and depth grammar. The scope of this project is inter-disciplinary, spanning research areas such as brand equity, structuralist semiotics, textual semiotics, visual and film (...) semiotics, multimodal rhetoric, film theory, psychoanalysis. The proposed connectionist conceptual model of the brand trajectory of signification is operationalized through a methodological framework that encompasses a structuralist semiotic interpretative approach to the textual formation of brand equity, supported by quantitative content analysis with the aid of the software Atlas.ti and the application of multivariate mapping techniques. (shrink)

Arguments from analogy are pervasive in everyday reasoning, mathematics, philosophy, and science. Informal logic studies everyday argumentation in ordinary language. A branch of fuzzy logic, approximate reasoning, seeks to model facets of everyday reasoning with vague concepts in ill-defined situations. Ways of combining the results from these fields will be suggested by introducing a new argumentation scheme—a fuzzy analogical argument from classification—with the associated critical questions. This will be motivated by a case study of analogical reasoning in the virtual friendship (...) debate within information ethics. The virtual friendship debate is a disagreement over whether virtual friendships are genuine friendships. It will be argued that the debate could move away from its current impasse, caused by unproductive metaphysical and logical assumptions, if extant arguments are reinterpreted as fuzzy analogical arguments from classification, and subjected to a new set of critical questions which would replace the quest for facts of essence about friendship with an emphasis on empirical data, persuasion, and definitional power. (shrink)

This article analyses letters to the editor written on or about Muslims printed in a British broadsheet newspaper. The pragma-dialectical theory of argumentation is applied as a model for explaining and understanding the arguments employed in the sampled letters. Our presentation of pragma-dialectical theory focuses on argumentative reasonableness. More specifically, we introduce the four dialectical stages through which any argument must pass and explain the ten rules of critical discussion that participants must follow throughout if they are to resolve the (...) argument. The article focuses in particular on the letter writers' use of argument schemes-that is, the manner in which these writers use arguments to support their standpoints. We conclude by highlighting the role that unreasonable arguments can play in perpetuating racialized inequalities and hence the importance of analyzing argumentation. (shrink)

Arguing that our attachment to Aristotelian modes of discourse makes a revision of their conceptual foundations long overdue, the author proposes the consideration of unacknowledged factors that play a central role in argument itself. These are in particular the subjective imprint and the dynamics of argumentation. Their inclusion in a four-dimensional framework and the focus on thesis validity allow for a more realistic view of our discourse practice. Exhaustive analyses of fascinating historical and contemporary arguments are provided. These range from (...) Columbus’s advocacy of the Western Passage to India, over the trial of King Louis XVI during the French Revolution, to today’s highly charged controversies surrounding euthanasia and embryo research. Excavating foundational issues such as the purpose of argument itself and the contested role of argument as a generator of knowledge, the book culminates in a discussion of the relationship between rationality and reasonableness and criticizes the restrictions of ‘rational’ argument relying on fixed logical, economic or cultural criteria that in reality are mutable. Here, a true, open argument requires the infusion of Paul Lorenzen’s principle of ‘transsubjectivity’, which recognizes but transcends the partiality of the individual and which can be seen in the pragmatic and expanding consensus that humanity can control itself to safeguard the future of a fragile, damaged world. (shrink)

Despite the effort educators put into developing in students the critical writing and thinking skills needed to compose effective arguments, undergraduate college students are often accused of churning out essays lacking in creative and critical thought, arguments too obviously formulated and with sides too sharply drawn. Theories abound as to why these deficiencies are rampant. Some blame students’ immature cognitive and emotional development for these lacks. Others put the blame of lackadaisical output on the assigning of shopworn writing subjects, assigned (...) topics such as on American laws and attitudes about capital punishment and abortion. Although these factors might contribute to faulty written output in some cases, the prevailing hindrance is our very pedagogy, a system in which students are rewarded for composing the very type of argument we wish to avoid — the eristic, in which the goal is not truth seeking, but successfully disputing another’s argument. Certainly the eristic argument is the intended solution in cases when a clear‑cut outcome is needed, such as in legal battles and political campaigns when there can only be one winner. However, teaching mainly or exclusively the eristic, as is done in most composition classrooms today, halts the advancement of these higher‑order inquiry skills we try developing in our students. (shrink)

This paper explains the importance of classifying argumentation schemes, and outlines how schemes are being used in current research in artificial intelligence and computational linguistics on argument mining. It provides a survey of the literature on scheme classification. What are so far generally taken to represent a set of the most widely useful defeasible argumentation schemes are surveyed and explained systematically, including some that are difficult to classify. A new classification system covering these centrally important schemes is built.

In this paper, I argue that, other things being equal, simpler arguments are better. In other words, I argue that, other things being equal, it is rational to prefer simpler arguments over less simple ones. I sketch three arguments in support of this claim: an argument from mathematical proofs, an argument from scientific theories, and an argument from the conjunction rule.

To describe how metaphors work from an argumentative point of view is the first step of this paper. After describing the metaphorical argumentative mechanism, the second step is to apply this mechanism by analyzing some paradigmatic international metaphors that are used in public speeches. This analysis will enable us to see some common grounds between different cultures and countries, especially regarding economical issues and argumentation theory.

Feminists note an association of arguing with aggression and masculinity and question the necessity of this connection. Arguing also seems to some to identify a central method of philosophical reasoning, and gendered assumptions and standards would pose problems for the discipline. Can feminine modes of reasoning provide an alternative or supplement? Can overarching epistemological standards account for the benefits of different approaches to arguing? These are some of the prospects for argumentation inside and outside of philosophy that feminists consider. -/- (...) The further concern is that the academic study of argumentation – in philosophy and other disciplines – has failed to account for the type of reasoning needed for social justice movements. What resources for addressing these concerns can be found in informal logic and interdisciplinary argumentation theory? Since part of the perceived problem derives from assuming that arguing is a contest, are more collaborative epistemological frameworks better? Can regular politeness or civility hedge against undesirable tendencies of argumentation? Can “critical thinking” pedagogy involving argument educations answer the needs of social justice? (shrink)

Recent theorizing and research concerning the pragmatics of analogy in persuasion posits that it serves two communicative functions. Specifically, rebuttal analogy instrumentally functions as argument and also as a social attack device used to demean the competence or character of opponents. The study reported here empirically investigated message receivers' perceptions of rebuttal analogy users. Participants were exposed to one of four messages employing rebuttal analogy or to one of the same four messages with a nonanalogy version of the rebuttal argument. (...) As anticipated, the findings revealed that participants perceived the communicator employing rebuttal analogy as less ethical and less competent than communicators using nonanalogy counterparts. These results are discussed and future research is proposed. (shrink)

Mathematicians often speak of conjectures, yet unproved, as probable or well-confirmed by evidence. The Riemann Hypothesis, for example, is widely believed to be almost certainly true. There seems no initial reason to distinguish such probability from the same notion in empirical science. Yet it is hard to see how there could be probabilistic relations between the necessary truths of pure mathematics. The existence of such logical relations, short of certainty, is defended using the theory of logical probability (or objective Bayesianism (...) or non-deductive logic), and some detailed examples of its use in mathematics surveyed. Examples of inductive reasoning in experimental mathematics are given and it is argued that the problem of induction is best appreciated in the mathematical case. (shrink)

According to van Eemeren, argumentation theory is a hybrid discipline, because it requires a multidisciplinary, if not interdisciplinary approach, combining descriptive and normative insights. He points out that modern argumentation theorists give substance to the discipline by relying either on a dialectical perspective, concentrating on the reasonableness of argumentation, or on a rhetorical perspective, concentrating on its effectiveness. Both the dialectical and the rhetorical perspective are interpreted in ways related to how they were viewed by Aristotle, but in modern argumentation (...) theory the relationship between the two, captured in Aristotle’s term antistrophos, is lost. According to van Eemeren, this relationship, which he considers crucial to a full-fledged argumentation theory, has been recovered in extended pragma-dialectics with the help of the theoretical notion of ‘strategic manoeuvring.’. (shrink)

Work on analogy has been done from a number of disciplinary perspectives throughout the history of Western thought. This work is a multidisciplinary guide to theorizing about analogy. It contains 1,406 references, primarily to journal articles and monographs, and primarily to English language material. classical through to contemporary sources are included. The work is classified into eight different sections (with a number of subsections). A brief introduction to each section is provided. Keywords and key expressions of importance to research on (...) analogy are discussed in the introductory material. Electronic resources for conducting research on analogy are listed as well. (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)

A generation before Beardsley, legal scholar John Henry Wigmore invented a scheme for representing arguments in a tree diagram, aimed to help advocates analyze the proof of facts at trial. In this essay, I describe Wigmore's "Chart Method" and trace its origin and influence. Wigmore, I argue, contributes to contemporary theory in two ways. His rhetorical approach to diagramming provides a novel perspective on problems about the theory of reasoning, premise adequacy, and dialectical obligations. Further, he advances a novel solution (...) to the problem of assessing argument quality by representing the strength of argument in meeting objections. (shrink)

In this paper we analyze the uses and misuses of argumentation schemes from verbal classification, and show how argument from definition supports argumentation based on argument from verbal classification. The inquiry has inevitably included the broader study of the concept of definition. The paper presents the schemes for argument from classification and for argument from definition, and shows how the latter type of argument so typically supports the former. The problem of analyzing arguments based on classification is framed in a (...) structure that reveals the crucial role it plays in the persuasion process. The survey of the literature includes the work of Hastings, Perelman, Kienpointner and Schiappa, but still finds much of value in Aristotle. Lessons drawn from Aristotle’s Topics are shown to be useful for developing new tools for assessing definitions and arguments from definition. (shrink)

In her 2007 paper, “Argument Has No Function” Jean Goodwin takes exception with what she calls the “explicit function claims”, arguing that not only are function-based accounts of argumentation insufficiently motivated, but they fail to ground claims to normativity. In this paper I stake out the beginnings of a functionalist answer to Goodwin.

The main rationale for adopting the epistemological approach to argumentation seems to take the form of a criticism of the consensus theory. This criticism says that some instances of clearly bad argumentation count as acceptable instances of argumentation on the consensus theory. Supposedly, the epistemological approach does not have this problem. I suggest that the kind of normativity argumentation theorists should be concerned with is the normativity associated with giving real-world advice on how to partake in a critical discussion. I (...) try to show that when we understand the normativity of argumentative standards in this way, the main criticism of the consensus theory falls short, and the epistemological approach does not really have the advantages over the consensus theory that it is purported to have. If I am right, then the main reason offered for adopting the epistemological approach fails, and we should stick with the consensus theory. (shrink)

The principle of charity is used in philosophy of language and argumentation theory as an important principle of interpretation which credits speakers with “the best” plausible interpretation of their discourse. I contend that the argumentation account, while broadly advocated, misses the basic point of a dialectical conception which approaches argumentation as discussion between two parties who disagree over the issue discussed. Therefore, paradoxically, an analyst who is charitable to one discussion party easily becomes uncharitable to the other. To overcome this (...) paradox, I suggest to significantly limit the application of the principle of charity depending on contextual factors. (shrink)

What are the implications of taking seriously Chaïm Perelman's proposition that “definitions are rhetorical”? Efforts to find Real Definitions are dysfunctional to the extent they direct argumentation toward pseudo “is” claims and away from explicit “ought” claims about how words are to be used. Addressing definitional disputes explicitly as propositions ofought rather thanis could put on the agenda the pragmatic concerns of definitional choice that might otherwise remain tacit.

This essay argues that scientific discourse is amenable to interpretation and assessment from the perspective of the narrative paradigm and its attendant logic, narrative rationality. It also contends that this logic entails a revised conception of knowledge, one that permits the possibility of wisdom. The text analyzed is James D. Watson and Francis H. Crick's proposal of the double helix model of DNA.

This essay argues that Plato's “Gorgias,” a dialogue lauding dialectic over rhetoric, uses a question-and-answer format as a heuristic of argument. Specific observations are advanced to explain the implications of Plato's techniques and to provide a more sensitive understanding of the process by which sought to gain the adherence of his readers.