Abstract A very basic intuition is that argumentation is about giving reasons. This is recognized, for example, when it is stated that the object of study of argumentation theory is argumentative practices that consist, in whole or in part, but, at least, to a significant extent, of asking for, giving, and examining reasons. But this consensus does not translate into theory. In fact, reasons occupy a modest place in argumentation theory. Logical properties can be understood in terms of reasons or in terms of inferences, and in this sense, we can contrast reasons-based theories of argument with inference-based theories of argument. I will first show that the distinction between reasons-based and inference-based theories of argument is robust, and that there is a real difference between them. I will then argue that, as far as argumentation is concerned, a logical approach based on reasons is preferable to one based on inferences.

AbstractAnyone interested in philosophical argumentation should be prepared to study philosophical debates and controversies because it is an intensely dialogical, and even contentious, genre of argumentation. There is hardly any other way to do them justice. This is the reason why the present special issue addresses philosophical argumentation within philosophical debates. Of the six articles in this special issue, one deals with a technical aspect, the diagramming of arguments, another contrasts two moments in philosophical argumentation, Antiquity and the twentieth century, focusing on the use of refutation, and the remaining four analyze particular philosophical controversies. The controversies analyzed differ significantly in their characteristics (time, extension, media, audience,…). Hopefully, this varied sample will illuminate some salient aspects of philosophical argumentation, its representation and variations throughout history. We are fully aware that, given the scarcity of previous studies of philosophical debates from the perspective of argumentation theory, the following specimens of analysis must have several shortcomings. But it is a well-known adage that the hardest part is the beginning. That is what we tried to achieve here, no more, but no less either.

AbstractThe debate on the a fortiori and the universal that took place between April 1914 and April 1919 in the journal Mind has a double interest for argumentation theorists. First, the discussion is an example of a philosophical polylogue that exhibits the characteristics of a quasi-engaged dialogue (Blair Blair, J. A. (2012 [1998]). “The Limits of the Dialogue Model of Argument”. Argumentation 12, pp. 325–339. Reprinted in J.A. Blair, Groundwork in the Theory of Argumentation, pp. 231–244. Dordrecht: Springer, 2012.), confirming Blair’s hypothesis that journal papers and scholarly monographs can be analyzed as turns in non-engaged or quasi-engaged dialogues. It could be said that philosophical argumentation is dialectical but not dialogical. Second, the debate is a discussion in argumentation theory. Generalism in the theory of argument claims that the very possibility of arguing depends on a suitable supply of general rules that specify what kinds of conclusions can be drawn from what kinds of data, while particularism denies this. Although the terminology may be alien, I will also show that the debate on the a fortiori and the universal was a debate on generalism and particularism.