This handbook offers a deep analysis of the main forms of legal reasoning and argumentation from both a logical-philosophical and legal perspective. These forms are covered in an exhaustive and critical fashion, and the handbook accordingly divides in three parts: the first one introduces and discusses the basic concepts of practical reasoning. The second one discusses the main general forms of reasoning and argumentation relevant for legal discourse. The third one looks at their application in law as well as at (...) the different areas of legal reasoning. The handbook’s division in three parts reflects its conceptual architecture, since legal reasoning and argumentation are considered in relation to the more general types of reasoning. (shrink)

En esta contribución intentaré mostrar que el criterio lex superior derogat legi inferiori conduce a una consecuencia que, al menos en lo que conozco, no ha sido todavía advertida. Si las normas de la máxima jerarquía de un sistema jurídico, verbigracia, normas constitucionales constituyen un conjunto consistente, entonces necesariamente el sistema jurídico es consistente. Dicho de otra manera, lex superior preserva necesariamente la consistencia. Si las normas del nivel más alto son miembros de un conjunto consistente, los niveles inferiores de (...) la jerarquía no podrían admitir normas contradictorias con las superiores. Más aún, habida cuenta que de una contradicción se sigue cualquier norma, en virtud del principio lógico ex falso quodlibet, de dos normas contradictorias que pertenecen a algún nivel inferior se derivan algunas normas en contradicción con normas del nivel superior; así normas contradictorias no podrían ser admitidas en los niveles inferiores. In this contribution, I shall intend to show that the criterion lex superior derogat legi inferiori has a consequence which, as far as I know, has not been noted yet: if the higherlevel norms in a legal system, i.e. constitutional norms, configure a consistent set, then necessarily the legal system is consistent. Lex superior preserves necessarily the consistency, as it were. If higher-level norms are members of a consistent set, then the lower-levels could admit no norm in contradiction with the higher-level norms. Moreover, given that from a contradiction follows anything, in virtue of the logical principle ex falso quodlibet, from two contradictory lower-level norms follow some norms in contradiction with norms of the higher-level, thus contradictory norms could never be admit in the lower-levels. (shrink)

This paper intends to show that it is possible to take convincingly into account the platitudes which underlie our moral practice. It deals with the articulation of an indirect strategy to answer the arguments of moral scepticism: if we can generate a conceptual space that takes such platitudes into account, perhaps we could ignore the sceptic doubts.Several metaethical conceptions can ecumenically carry out this task. Particularly, even if moral realism implies cognitivism and objectivism, moral objectivism –the plausibility of rational agreement (...) in morals- does presuppose necessarily neither realism nor cognitivism.An argument against moral relativism is also presented. It is argued that there are several ways of pluralism compatible with the very field of moral objectivity.The conclusion maintains that only an objectivist account of our moral practice is apt to make sense of our institutional designs that acknowledge universal human rights. (shrink)

Algunos de los más relevantes filósofos del derecho de los últimos años, como Carlos S. Nino y Ronald Dworkin, han defendido que hay una pluralidad de conceptos de Derecho. Scott Shapiro ha sostenido una posición especialmente relevante acerca de ello: la palabra ‘Derecho’ es sistemáticamente ambigua, pues a veces designa un conjunto de normas y otras veces una organización social. Esta es precisamente la tesis criticada en el trabajo. Se argumenta, basándose en determinada literatura filosófica acerca de los conceptos, que (...) los conceptos de objetos sociales de carácter intencional contienen una dimensión social y una dimensión significativa, normativa en el caso del derecho. El mismo concepto de Derecho expresa una dimensión social y una normativa imbricadas entre sí. Some of the most relevant legal philosophers in the last decades, as Carlos S. Nino and Ronald Dworkin, have defended the idea that there is a plurality of concepts of law. Scott Shapiro has sustained this account in a particularly relevant way: the word ‘law’ displays a ubiquitous ambiguity, sometimes designates a set of norms and other a social organization. This is precisely the thesis which is criticized in the paper. It is argued, from a certain philosophical literature about the concepts, that concepts of social objects of intentional character contain a social dimension and a meaning dimension, normative in the case of the law. That is to say, the concept of law expresses a social dimension and a normative dimension intertwined. (shrink)

This article analyzes the thesis of ethical relativism, as defended by Alchourrón and Bulygin. These authors offer, on the one hand, a suggestive conception according to which the question “what are our obligations?” is equivalent to thinking about what is to be done; on the other hand, they defend a relativist conception of ethics. They present three objections to constructivist accounts of ethics that are not relativist: a) the argument of the burden of the proof; b) a version of the (...) dilemma of Euthyphro, and c) the argument of particularism. This article presents counterarguments to these objections in the attempt to show that they are not conclusive and that a space therefore remains for objectivity in the normative sphere. Keywords: Alchourrón-Bulygin, ethical relativism, ethical constructivism, burden of proof, particularism. (shrink)

The author discusses a question related to a certain aspect of justification of legal decisions, often so-called internal justification-a legal decision is internally justified if and only if it can be deduced from the norm(s) applicable to the case, and from the statement(s) describing the facts of the case. According to this notion, infinite irrelevant logical consequences are justified. To avoid this counterintuitive conclusion, the author analyzes three notions of relevance: Sperber-Wilson's notion, Anderson-Belnap's notion, and Schurz's notion. The author presents (...) a reconstruction of the notion of relevance very close to Schurz's notion, extended to make it suitable to the particular characteristics of deontic logic. Finally, this notion of relevance is used to discuss some aspects of the concept of normative system, conceived as a deductive system, that is, a system containing all its logical consequences. (shrink)

This article attempts to illustrate the originality, depth, and farsightedness of Joseph Raz's conception, especially his idea that legal norms provide us with protected reasons to act, that is, with first-order reasons to behave as they prescribe, and with second-order, exclusionary reasons not to act for reasons against what they prescribe. But the article also highlights some aspects that raise doubts in my mind, especially with regard to the scope of these exclusionary reasons. This in two ways: by asking, on (...) the one hand, in what sense and subject to what limits legal norms provide exclusionary reasons for the organs entrusted with applying the law, especially for judges, and on the other hand, how and to what extent legal norms provide citizens with exclusionary reasons. So, in recognizing the strength of the Razian conception, the article also points to some of the difficulties it faces. (shrink)

In this comment to the brilliant book on the Constitutionalism in Latin-America, Gargarella, it is accepted that perhaps is the equality the empty promise among the ideals of constitutionalism in this region of the world. It is also accepted that an important part of the reason for this absence of equality lies in the institutional design, in the engine room of the Constitution, concretely in an hypertrophy of presidentialism. A complementary suggestion is added: the ideal of a constitutional democracy presupposes (...) the existence of a State with an autonomous, efficient, professional and robust public Administration. Only with a well-designed tax system and an Administration apt to carry out the proper functions it is possible to build a well-ordered society in which the Rawlsian Difference Principle is respected and honoured. (shrink)