AbstractIn English discourse one can find cases of the expression ‘not for nothing’ being used in argumentation. The expression can occur both in the argument and in the standpoint. In this chapter we analyse the argumentative and rhetorical aspects of ‘not for nothing’ by regarding this expression as a presentational device for strategic manoeuvring. We investigate under which conditions the proposition containing the expression ‘not for nothing’ functions as a standpoint, an argument or neither of these elements. It is also examined which type of standpoint (descriptive, evaluative or prescriptive) and which types of argument scheme (symptomatic, causal or comparison) the expression typically co-occurs with. In doing so we aim to develop a better understanding of the role and effects of ‘not for nothing’ when used in argumentation. Finally, we show that the strategic potential of ‘not for nothing’ lies in its suggestion that sufficient support has been provided while this support has in fact been left implicit.

AbstractRational agency is of central interest to philosophy, with evolutionary accounts of the cognitive underpinnings of rational agency being much debated. Yet one building block—our ability to argue—is less studied, except Mercier and Sperber’s argumentative theory (Mercier and Sperber in Behav Brain Sci 34(02):57–74,10.1017/s0140525x10000968, 2011, in The enigma of reason. Harvard University Press, Cambridge, 2017). I discuss their account and argue that it faces a lacuna: It cannot explain the origin of argumentation as a series of small steps that reveal how hominins with baseline abilities of the trait in question could turn into full-blown owners of it. This paper then provides a first sketch of the desired evolutionary trajectory. I argue that reasoning coevolves with the ability to coordinate behavior. After that, I establish a model based on niche construction theory. This model yields a story with following claims. First, argumentation came into being during the Oldowan period as a tool for justifying information ‘out of sight’. Second, argumentation enabled hominins to solve collective action problems with collaborators out of sight, which stabilized argumentative practices eventually. Archeological findings are discussed to substantiate both claims. I conclude with outlining changes resultant from my model for the concept of rational agency.

AbstractBy explaining the argument from ignorance in terms of thepresumption of innocence, many textbooks in argumentation theory suggest that some arguments from ignorance might share essential features with some types of presumptive reasoning. The stronger version of this view, suggesting that arguments from ignorance and presumptive reasoning are almost indistinguishable, is occasionally proposed by Douglas Walton. This paper explores the nature and limits of the stronger proposal and argues that initial presumptions and arguments from ignorance arenotclosely connected. There are three main reasons. First, the argument from ignorance, unlike typical presumptive reasoning, is a negative kind of inference. Second, the typical initial presumption is sensitive to a broader set of defeaters and thus assumes a higher (negative) standard of acceptability. Third, in dialectical terms, initial presumption and argument from ignorance bring different attacking rights and obligations. I conclude that Waltonian intuition is unsupported or, at best, is limited only to practical presumptions and practical arguments from ignorance.

This theoretical expose explores the complex notion of argumentative style, which has so far been largely neglected in argumentation theory. After an introduction of the problems involved, the theoretical tools for identifying the properties of the discourse in which an argumentative style manifests itself are explained from a pragma-dialectical perspective and a theoretical definition of argumentative style is provided that does full justice to its role in argumentative discourse. The article concludes with a short reflection upon the next steps that need to be taken in argumentation theory in further substantiating the notion of argumentative style.

To adequately model mathematical arguments the analyst must be able to represent the mathematical objects under discussion and the relationships between them, as well as inferences drawn about these objects and relationships as the discourse unfolds. We introduce a framework with these properties, which has been used to analyse mathematical dialogues and expository texts. The framework can recover salient elements of discourse at, and within, the sentence level, as well as the way mathematical content connects to form larger argumentative structures. We show how the framework might be used to support computational reasoning, and argue that it provides a more natural way to examine the process of proving theorems than do Lamport’s structured proofs.

The purpose of this paper is to show the pervasive, though often implicit, role of arguments in negotiation dialogue. This holds even for negotiations that start from a difference of interest such as mere bargaining through offers and counteroffers. But it certainly holds for negotiations that try to settle a difference of opinion on policy issues. It will be demonstrated how a series of offers and counteroffers in a negotiation dialogue contains a reconstructible series of implicit persuasion dialogues. The paper is a sequel to van Laar and Krabbe (2017), in which we showed that for some differences of opinion it may be reasonable to shift from persuasion dialogue, aimed at a resolution of the difference on the merits, to negotiation dialogue, aimed at compromise, whereas in the present paper we show that such a shift need not amount to the abandonment of argumentation. Our main aim in this paper as well as in the previous one is to contribute to the theory of argumentation within the context of negotiation and compromise formation.