The A Simili Argument draws the conclusion that a target case has a normative property Q since it shares a relevant property P with a source case. It can be seen as a complex inference constituted by three inferential steps: An abduction of the relevant property P, an induction of the class having that property, and a deduction of the target's having property Q. A major problem of this argument is the characterization of the property relevance. The standard answer refers (...) to the notion of ratio: It is the ratio that fixes what is relevant for what. But the determination of the ratio is often a difficult and controversial task. This issue is considered here from an inferentialist point of view, claiming that the ratio and relevance are determined by the normative statuses reciprocally attributed by the speakers in the context of legal argumentation. (shrink)

Several legal arguments use the notion of ratio legis in order to sustain a normative conclusion, in particular the argument from analogy and some forms of teleological argumentation. However, determining the ratio is often a difficult and controversial task. In this paper we look firstly at the speech acts typically performed by legal practitioners in order to determine the ratio and, secondly, we take into account the argumentative commitments they undertake in so doing and the argumentative constraints put on them. (...) This will lead us to distinguish different uses of the notion of ratio legis and to ask on what conditions each of them is justified. (shrink)

The paper is about the uses of the argument from legislative counterfactual intention, in the field of legal interpretation and argumentation. After presenting the argument from intention in general, it distinguishes the varities of the argument from counterfactual legislative intention and discusses their justification conditions.

The A Simili Argument draws the conclusion that a target case has a normative property Q since it shares a relevant property P with a source case. It can be seen as a complex inference constituted by three inferential steps: An abduction of the relevant property P , an induction of the class having that property, and a deduction of the target's having property Q . A major problem of this argument is the characterization of the property relevance. The standard (...) answer refers to the notion of ratio: It is the ratio that fixes what is relevant for what. But the determination of the ratio is often a difficult and controversial task. This issue is considered here from an inferentialist point of view, claiming that the ratio and relevance are determined by the normative statuses reciprocally attributed by the speakers in the context of legal argumentation. (shrink)

Abstract. The purpose of this paper is to address some of the main issues of contemporary jurisprudential methodology by considering the contribution of Jules Coleman to this subject. After a description of Coleman's methodological approach and a clarification of its philosophical background, the paper focuses on some related problems, such as the relation between linguistic meaning and conceptual content, the nature of legal concepts, the different aspects of the normativity of content, and the revisability of conceptual truths.