ABSTRACT Fallacies are traditionally defined as potentially deceptive failures of rationality or reasonableness. Fallacy theories seek to model this failure by formulating standards of rationality or reasonableness that arguers must observe when engaging in argumentative interaction. Yet it remains relatively easy to reject or avoid fallacy judgments even in the most clear-cut cases. In this article, I argue for a pluralist approach to criticism in which the fallacy accusation is only the starting point for a more complex form of criticism. (...) In a pluralist approach, the identification of fallacies works as a first step precisely because it can be so easily set aside. In doing so, the evaluator seeks other evaluative angles that depart from the original one. As a case in point, I exemplify the approach on a piece of argumentative discourse in the scientific context. I conclude by spelling out some of the methodological consequences of the present approach. (shrink)

Everyday life reasoning and argumentation is defeasible and uncertain. I present a probability logic framework to rationally reconstruct everyday life reasoning and argumentation. Coherence in the sense of de Finetti is used as the basic rationality norm. I discuss two basic classes of approaches to construct measures of argument strength. The first class imposes a probabilistic relation between the premises and the conclusion. The second class imposes a deductive relation. I argue for the second class, as the first class is (...) problematic if the arguments involve conditionals. I present a measure of argument strength that allows for dealing explicitly with uncertain conditionals in the premise set. (shrink)

The fallacies, as traditionally conceived, are wrong ways of reasoning that nevertheless appear attractive to us. Recently, however, Woods (2013) has argued that they don’t merit such a title, and that what we take to be fallacies are instead largely virtuous forms of reasoning. This reformation of the fallacies forms part of Woods’ larger project to naturalize logic. In this paper I will look to his analysis of the argumentum ad hominem as a case study for the prospects of this (...) project. I will argue that the empirical literature on implicit bias presents a difficulty for the reformation of the ad hominem as cognitively virtuous. Cases where implicit bias influences our assessment of the truth or claim or argument are instances of ad hominem reasoning, and these qualify as fallacious on Woods’ own definition. (shrink)