In Swiss semi-direct democracy, citizens are often summoned to the polls. To vote reasonably, they need to be properly informed. The media therefore have the responsibility to provide them with arguments for and against each issue of voting. Here, we focus on argumentation in a television ‘civic debate’ about abolishing compulsory military service. To provide a unified and integrated overview of the debate dynamics, we combine the Dialogical Model of Argumentation and the Argumentum Model of Topics, which share a similar (...) emphasis on the discursive dimension of argumentation. This analysis underlines the importance of linguistic and communicative resources and procedures, without neglecting the macro socio-political environment of the debate. (shrink)

Eight structural criteria are developed as part of a dialogical method by testing them against seven examples of arguments from negative consequences. The aim is to provide a method for evaluating the arguments in the examples as fallacious or not. It is shown that any method that can be satisfactorily used to evaluate such examples needs to be based on two techniques. The first is careful application of argumentation underlying shifts from one type of dialog to another schemes. The second (...) is consideration of contextual factors concerning. (shrink)

Douglas Walton’s work is extremely vast, multifaceted, and interdisciplinary. He developed theoretical proposals that have been used in disciplines that are not traditionally related to philosophy, such as law, education, discourse analysis, artificial intelligence, or medical communication. Through his papers and books, Walton redefined the boundaries not only of argumentation theory, but also logic and philosophy. He was a philosopher in the sense that his interest was developing theoretical models that can help explain reality, and more importantly interact with it. (...) For this reason, he proposed methods that have been used for analyzing different types of dialogical interactions, and modeling procedures for regulating them. (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)

Most dialectical models view argumentation as a process of critically testing a standpoint. Further, they assume that what we critically test can be analytically reduced to individual and bi-polar standpoints. I argue that these two assumptions lead to the dominant view of dialectics as a bi-partisan argumentative discussion in which the yes-side argues against the doubter or the no-side. I scrutinise this binary orientation in understanding argumentation by drawing on the main tenets of normative pragmatic and pragma-dialectical theories of argumentation. (...) I develop my argument by showing how argumentative practice challenges these assumptions. I then lay out theoretical reasons for this challenge. This paves the way for an enhanced conceptualisation of dialectical models and their standards of rationality in terms of multi-party discussions, or argumentative polylogues. (shrink)

Most dialectical models view argumentation as a process of critically testing a standpoint. Further, they assume that what we critically test can be analytically reduced to individual and bi-polar standpoints. I argue that these two assumptions lead to the dominant view of dialectics as a bi-partisan argumentative discussion in which the yes-side argues against the doubter or the no-side. I scrutinise this binary orientation in understanding argumentation by drawing on the main tenets of normative pragmatic and pragma-dialectical theories of argumentation. (...) I develop my argument by showing how argumentative practice challenges these assumptions. I then lay out theoretical reasons for this challenge. This paves the way for an enhanced conceptualisation of dialectical models and their standards of rationality in terms of multi-party discussions, or argumentative polylogues. (shrink)

Douglas Walton has done extensive and valuable work on the concepts of presumption and practical reasoning. However, Walton’s attempt to model practical reasoning as presumptive is misguided. The notions of “inference” and of the burden of proof shifting back and forth between proponent and respondent are misleading and lead to counterintuitive consequences. Because the issue in practical reasoning is a proposal, not a proposition, there are, in the standard case, several perfectly good reasons on both sides simultaneously, which implies that (...) argument appraisal necessarily contains a subjective element—a fact argumentation theory needs to conceptualize. (shrink)

Political debate is a distinctive domain in argumentation, characterized by these features: it is about proposals for action, not about propositions that may have a truth value; there may be good arguments on both sides; neither the proposal nor its rejection follows by necessity or inference; the pros and the cons generally cannot, being multidimensional and hence incommen- surable, be aggregated in an objective way; each audience member must subjectively compare and balance arguments on the two sides; eventual consensus between (...) the debaters is not a reasonable requirement. From all this follows a view of the rhetor’s special obligation in democratic, deliberative rhetoric on which it becomes crucial, in the interest of the audience, that political debaters acknowledge good arguments on the opposite side and explain why, on balance, they deem the arguments favoring their own side to be stronger. (shrink)

Negotiation and deliberation are two context types or genres of discourse widely studied in the argumentation literature. Within the pragma-dialectical framework, they have been characterised in terms of the conventions constraining the use of argumentative discourse in each of them. Thanks to these descriptions, it has become possible to analyse the arguers’ strategic manoeuvres and carry out more systematic, context-sensitive evaluations of argumentative discussions. However, one issue that still must be addressed in the pragma-dialectical theory—and other contextual approaches to argumentation—is (...) how to distinguish negotiation and deliberation in practice. In this paper, I seek to develop criteria that can help the analyst identify them in discourse. To this end, I characterise the felicity conditions of the superordinate speech acts defining and structuring deliberation and negotiation encounters. (shrink)

Assertions have a curious relationship to certainty. On the one hand, it seems clear that we can assert many everyday propositions while not being absolutely certain about them. On the other hand, it seems odd to say things like ‘p, but I am not absolutely certain that p’. In this paper, I aim to solve this conundrum. I suggest a pretense theory of assertion, according to which assertions of p are proposals to act as if the conversational participants were absolutely (...) certain of p. I suggest that this explains why absolute certainty is not required to make assertions, while it is still problematic to voice your uncertainties once you have made an assertion. By voicing your uncertainties, you thwart your very own proposal to act as if everybody was absolutely certain. (shrink)

Some disagreements seem to be persistent: they are, pretty much, immune to persuasive argumentation. If that is the case, how can they be overcome? Can argumentation help us? I propose that to overcome persistent disagreements through argumentation, we need a dynamic and pluralistic version of argumentation. Therefore, I propose that argumentation, more than a tool that uses persuasion to change the mind of the counterpart, is a toolbox that contains persuasion, deliberation, negotiation, and other dialogical strategies that can be used (...) to reach an agreement. (shrink)

The first issue of _Artificial Intelligence and Law_ journal was published in 1992. This paper discusses several topics that relate more naturally to groups of papers than a single paper published in the journal: ontologies, reasoning about evidence, the various contributions of Douglas Walton, and the practical application of the techniques of AI and Law.

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)

The paper offers a theoretical investigation regarding the sources of normativity in practical argument from the following perspective: Do we need objectively-minded, unbiased arguers or can we count on “good” argumentative processes in which individual biases cancel each other out? I will address this problem by analysing a detailed structure of practical argument and its varieties. I will argue that given the structure proposed, biased advocacy upholds reasonableness whenever the argumentative activity is adequately designed.