In The Uses of Argument, Stephen Toulmin proposed a model for the layout of arguments: claim, data, warrant, qualifier, rebuttal, backing. Since then, Toulmin’s model has been appropriated, adapted and extended by researchers in speech communications, philosophy and artificial intelligence. This book assembles the best contemporary reflection in these fields, extending or challenging Toulmin’s ideas in ways that make fresh contributions to the theory of analysing and evaluating arguments.

The article discusses burden of proof rules in social criticism. By social criticism I mean an argumentative situation in which an opponent publicly argues against certain social practices; the examples I consider are discrimination on the basis of species and discrimination on the basis of one's nationality. I argue that burden of proof rules assumed by those who defend discrimination are somewhat dubious. In social criticism, there are no shared values which would uncontroversially determine what is the reasonable presumption and (...) who has the burden of proof, nor are there formal rules which would end the debate and determine the winner at a specific point. (shrink)

The concept of burden of proof is used in a wide range of discourses, from philosophy to law, science, skepticism, and even in everyday reasoning. This paper provides an analysis of the proper deployment of burden of proof, focusing in particular on skeptical discussions of pseudoscience and the paranormal, where burden of proof assignments are most poignant and relatively clear-cut. We argue that burden of proof is often misapplied or used as a mere rhetorical gambit, with little appreciation of the (...) underlying principles. The paper elaborates on an important distinction between evidential and prudential varieties of burdens of proof, which is cashed out in terms of Bayesian probabilities and error management theory. Finally, we explore the relationship between burden of proof and several (alleged) informal logical fallacies. This allows us to get a firmer grip on the concept and its applications in different domains, and also to clear up some confusions with regard to when exactly some fallacies (ad hominem, ad ignorantiam, and petitio principii) may or may not occur. (shrink)

In this paper, I examine the question of commitment transmissibility in public political arguments. I explore the idea that under certain conditions, arguers become accountable for the commitments of their “argumentative associates” (Mohammed 2019a ). I present cases where arguers make discursive effort to distance themselves from an undesirable associate in order to avoid acquiring the associate’s commitments, as well as cases where arguers fail to do so and face the consequences. I discuss the concept of commitment in argumentation (e.g. (...) Hamblin 1970, Walton & Krabbe 1995 ), and I build on the scheme of guilt and honour by association (Groarke and Tindale 2004 ). The result is a nuanced normative view of arguments by association: the transmissibility of commitments between argumentative associates is a way to hold arguers accountable for the argumentative potential (Mohammed 2019b ; see also Kjeldsen 2017 ; Serafis 2022 ) of their discourse, and yet, commitment transmissibility remains defeasible to avoid the over-attribution of commitment by association. (shrink)

For 15 years, former assistant football coach Jerry Sandusky used his Penn State University perquisites to lure young and fatherless boys by offering them special access to one of the most revered football programs in the country. He repeatedly used the football locker room as a space to groom, molest, and rape his victims. In February 2001, an eye-witness alerted Penn State’s top leaders that Sandusky was caught sexually assaulting a young boy in the showers. Instead of taking swift action (...) against Sandusky, leaders began a cover-up that is considered one of the worst scandals in sports history. While public outcry has focused on the leaders’ silence, we focus on the talk that occurred within the organization by key personnel. Drawing from court documents and internal investigative reports, we examine two euphemism clusters that unfolded in the scandal. The first cluster comprises reporting euphemisms, in which personnel used coded language to report the assault up the chain of command. The second cluster comprises responding euphemisms, in which Penn State’s top leaders relied on an innocuous, but patently false, interpretation of earlier euphemisms as a decision-making framework to chart their course of action. We use this case to demonstrate how euphemistic language impairs ethical decision-making, particularly by framing meaning and visibility of acts, encouraging mindless processing of moral considerations, and providing a shield against psychological and material consequences. Further, we argue that euphemism may serve as a disguised retort to critical upward communication in organizations. (shrink)

Uno de los debates más recientes referentes a la innovación tecnológica entre los especialistas en ética es aquel sobre la mejora humana, el cual ha surgido a raíz de la posibilidad de modificar los límites de la naturaleza humana usando el poder de la ciencia. Muchos filósofos nos han avisado del peligro de modificar técnicamente nuestra naturaleza humana. Otros, por contra, defienden que no existe diferencia moral relevante alguna entre las nuevas técnicas biomédicas de mejora y las tecnologías aceptadas como (...) habituales por los seres humanos. Este artículo pretende examinar críticamente tal argumento. El fin de este análisis crítico será doble, primero, mostrar que los autores que defienden esta posición poseen visiones sesgadas y prejuiciosas de la realidad y, segundo, que es necesario establecer una definición más precisa y acotada del término “mejora”. (shrink)

In Roman rhetoric, contrarium was variably considered either a figure of speech or an argument. The paper examines the logical pattern of this type of argument, which according to Cicero is based on a third Stoic indemonstrable syllogism: $$ \neg ({\hbox{p}} \wedge {\hbox{q}});<$> <$>{\hbox{p}} \to \neg {\hbox{q}}{\hbox{.}} $$ The persuasiveness of this type of argument, however, vitally depends on the validity of the alleged ‹incompatibility’ forming its major premiss. Yet this appears to be the argument’s weak point, as the ‹incompatibilities’ (...) employed generally hold for the most part only, and are reducible to topical argument schemes. This is why in practical usage such arguments are most often phrased as rhetorical questions, the persuasive force of which, enhanced by certain strategical maneuverings and fallacies, makes the audience swallow the argument. (shrink)

Reasonable reconstruction of public statements is an essential component of civil discourse especially in contentious political contexts. This essay addresses the problems posed by irony through the perspective of the speaker and the audience. I argue that existing attempts to systematize the identification and reconstruction of irony focus unduly on forms of contrary irony, thereby neglecting the more complex figure of Socratic Irony. Socratic Irony, which can be characterized by the invocation of the voice of the other, is distinguished from (...) other important meanings of the word “irony” and illustrated by one ancient and three contemporary examples. When encountering this stylistic device, reasonable audiences must choose their principle of reconstruction. Of the five options for this choice, the final one reconstructing Socratic Irony using recurring markers is ultimately championed and its functionality demonstrated on the four earlier examples. (shrink)

Argumentation is considered crucial in numerous disciplines in schools and universities because it constitutes an important proficiency in peoples' daily and professional lives. However, it is unclear whether argumentation is understood and practiced in comparable ways across disciplines. This study consequently examined empirically how students perceive argumentation in science and language lessons. Specifically, we investigated students' beliefs about the relevance of discourse and the role of facts. Data from 3,258 high school students from 85 German secondary schools were analyzed with (...) multigroup multilevel structural equation modeling in order to disentangle whether or not differences in argumentation across disciplines exist and the extent to which variation in students' beliefs can be explained by gender and school track. Results showed that students perceived the role of facts as highly relevant for science lessons, whereas discursive characteristics were considered significantly less important. In turn, discourse played a central role in language lessons, which was believed to require less knowledge of facts. These differences were independent of students' gender. In contrast, school track predicted the differences in beliefs significantly. Our findings lend evidence on the existence of disciplinary school cultures in argumentation that may be the result of differences in teachers' school-track-specific classroom practice and education. Implications in terms of a teacher's role in establishing norms for scientific argumentation as well as the impact of students' beliefs on their learning outcomes are discussed. (shrink)

How do Dutch people let each other know that they disagree? What do they say when they want to resolve their difference of opinion by way of an argumentative discussion? In what way do they convey that they are convinced by each other’s argumentation? How do they criticize each other’s argumentative moves? Which words and expressions do they use in these endeavors? By answering these questions this short essay provides a brief inventory of the language of argumentation in Dutch.

Communication can be risky. Like other kinds of actions, it comes with potential costs. For instance, an utterance can be embarrassing, offensive, or downright illegal. In the face of such risks, speakers tend to act strategically and seek ‘plausible deniability’. In this paper, we propose an account of the notion of deniability at issue. On our account, deniability is an epistemic phenomenon. A speaker has deniability if she can make it epistemically irrational for her audience to reason in certain ways. (...) To avoid predictable confusion, we distinguish deniability from a practical correlate we call ‘untouchability’. Roughly, a speaker has untouchability if she can make it practically irrational for her audience to act in certain ways. These accounts shed light on the nature of strategic speech and suggest countermeasures against strategic speech. (shrink)

In response to an accusation of having said something inappropriate, the accused may exploit the difference between the explicit contents of their utterance and its implicatures. Widely discussed in the pragmatics literature are those cases in which arguers accept accountability only for the explicit contents of what they said while denying commitment to the implicature. In this paper, we sketch a fuller picture of commitment denial. We do so, first, by including in our discussion not just denial of implicatures, but (...) also the mirror strategy of denying commitment to literal meaning and, second, by classifying strategies for commitment denial in terms of classical rhetorical status theory. In addition to providing a systematic categorization of our data, this approach offers some clues to determine when such a defence strategy is a reasonable one and when it is not. (shrink)

Cancellability is an essential feature of implicatures. However, its reliability has been challenged by several cases and examples in which conversational implicatures seem to be hard or even impossible to cancel. Should it then be concluded that not all implicatures are cancellable, and therefore Grice's cancellability test should be weakened or abandoned? The present paper addresses this problem by drawing a distinction between theoretical and practical cancellability, where the latter concept captures the (un)reasonableness of explicit or contextual cancellation. By analyzing (...) three legal cases of misleading advertising, I show how the indefensibility of an interpretation can account for the practical uncancellability of an implicature. To explain and account for the reasonableness of an interpretation, the presumptive inferences involved must be reconstructed and evaluated considering different dimensions, such as the conversational context and the associated presumptions. (shrink)