This article surveys different philosophical theories about the nature of truth. We give much importance to truth; some demand to know it, some fear it, and others would even die for it. But what exactly is truth? What is its nature? Does it even have a nature in the first place? When do we say that some truth-bearers are true? Philosophers offer varying answers to these questions. In this article, some of these answers are explored and some of the problems (...) raised against them are presented. (shrink)

This essay is an exegetical work, the primary intention of which is to present and interpret Hegel’s notion of the “understanding” in the first chapter of his Phenomenology of Spirit. The presentation and interpretation at hand takes as its starting point the work of Slavoj Žižek, who the author feels has begun a new and exciting era of scholarship on Hegel. The overall aim of the essay is modest: to develop the Žižekian reading of Hegel at the micro level. My (...) thesis is that Hegel’s initial development of the “understanding” demonstrates how, from the very first, subjectivity grabs a hold on the incompleteness of reality—a notion that is essential to Žižek’s work. Specifically, I show that the understanding realizes itself, against its will, as an accident of the world, upon which it previously depended for its illusory neutrality. The first chapter of the Phenomenology culminates in the problem of consciousness confronting itself as an accident. Ultimately, I show how Hegel’s accidentality of consciousness, since it is determined by the world, coincides with Žižek’s teaching about the identity of the subject precariously established on the incompleteness of reality. (shrink)

This paper explores two persistent questions in the literature on presumptions: the place and the nature of presumptions in law and legal argumentation. These questions were originally raised by James Bradley Thayer, one of the masters of the Law of Evidence and the author of the classic chapter devoted this subject in A preliminary treatise on Evidence. Like Thayer, I believe that these questions deserve attention. First the paper shows that the connection between presumptions and argumentation is a constant feature (...) in the literature on presumptions, since its foundation in the Middle Ages to modern times. James Bradley Thayer was probably the last jurist who clearly saw that presumptions belong to argumentation. Second, the paper examines two sources of controversy in the language of presumptions. First, “presumption” is an ambiguous word in the legal discourse. As a result, it is almost impossible to provide a clear and succinct answer to the question “What is a presumption?”. Second, there are at least four reconstructions of the concept of presumption whose merits and shortcomings are relevant to explore. The analysis presented here may be of interest for legal and non-legal scholars and, hopefully, it may help to shed light on the possibilities and limits of an interdisciplinary dialogue about presumptions. (shrink)

The notion of rationality is crucial to Computer Science and Artificial Intelligence, Economics, Law, Philosophy, Psychology, Anthropology, etc. Most if not all of these disciplines presuppose the agent's capacity to infer in a logical manner. Theories about rationality tend toward two extremes: either they presuppose an unattainable logical capacity, or they tend to minimize the role of logic, in light of vast data on fallacious inferential performance. We analyze some presuppositions in the classical view of logic, and suggest empirical and (...) theoretical evidence for the place of inferential heuristics in a theory of rationality. We propose (1) to outline a new theory of rationality that includes the key notion of logical capacity as a necessary but realistic factor, (2) to expand the notion of inference to include non-deductive inference, specifically non-monotonic, and (3) to emphasize the logical role of inferential heuristics and constraints such as cognitive economy. (shrink)

Este artículo es una breve exposición de la formación discursiva de la biopolítica propuesta por Michel Foucault en la década de los setenta. El propósito es presentar el estatuto teórico original del mencionado concepto como una tecnología de doble faz, establecida en los siglos XVII, XVIII y XIX que interviene y establece controles reguladores sobre la vida biológica en dos formas que no son antitéticas. La primera, se centra en el cuerpo como máquina: anatomopolítica del cuerpo humano. La segunda, se (...) enfoca en el cuerpo-especie: es la biopolítica de la población. La metodología utilizada es un análisis de tipo documental que agrupó los cursos: Defender la sociedad; Seguridad, territorio y población y Nacimiento de la biopolítica, así como el libro Historia de la sexualidad 1, para conocer de manera sintética y reflexionar la idea y el sentido original del término como una tecnología de conducción de conductas individuales y colectivas. (shrink)

Este trabalho analisa a influência tributária na definição do modelo constitucional de atribuição dos resultados econômicos da exploração do petróleo offshore, no Brasil. Além da abordagem constitucional do tema, destaca-se a participação dos entes federativos estaduais nas rendas da produção de petróleo, sua federalização e, em decorrência, a redução das rendas dos entes federativos subnacionais, implicando num movimento compensatório pela via da utilização de elementos de natureza tributária, tais como o extinto Imposto Único sobre Minerais e o regime constitucional especial (...) de cobrança na origem do ICMS devido nas operações de combustíveis e derivados de petróleo. (shrink)

Objective: To evaluate moral development as an indicator of the capacity to consent among two groups of patients from the Hospital de Clínicas in Porto Alegre, RS, Brazil.Method: Fifty-nine adolescents and 60 patients over 60 years of age participated in a cross-sectional study to assess moral development using Loevinger’s model of ego stages.Results: Age and moral development showed no association, with most participants in the two groups being in the conscientious phase.Conclusions: Age is probably not an adequate variable to measure (...) decision-making capacity, because questions of medical consent relate to participants’ own personal health. Decision-making capacity should be viewed as a continuous function. While the age of the person whose consent is needed should be considered, age alone, from a moral perspective, is not the main determinant of this capacity. (shrink)

This thesis analyzes from a philosophical perspective different models for nonmonotonic inference, belief revision and the handling of inconsistencies. ;The first chapter serves as an introduction to the subject, giving examples and analyzing the main concepts. As a result of these discussions, this thesis tries to: produce a refined map of the main notions related to this subject, maintain that there can be a fault tolerant logic that stands in support of fault tolerant reasoning, and defend the use of deductive (...) databases as models for changes of belief. ;The second chapter explores monotonic proposals to deal with uncertain reasoning. These include logics based on a classical notion of consequence, interpretations of defeasible reasoning as containing implicit premises, and systems in which temporal change is an integral part of the representation of states of affairs, via temporal indices or more elaborate devices. ;The third chapter explores quantitative approaches to nonmonotonic reasoning like dispositional logic, and theories of probabilistic reasoning including Bayesian, certainty factors, and Dempster-Shafer. ;The fourth chapter explores qualitative approaches. Here we mention conditional, default, and nonmonotonic logics, and the circumscription and autoepistemic formalisms. ;The fifth chapter studies different proposals to deal with contradictions. It starts with a review of the types of belief inconsistencies, and then it presents mechanisms to prevent, control or correct them. I explore paraconsistent logics, specially relevance logics, to "bracket" the area of conflict and allow inferences about non-related topics to continue unaffected. Then I examine different methods to get rid of the inconsistencies, including the use of dependency-directed backtracking and of relevance logic. ;Finally, I present my conclusions, and mention some of the open problems. (shrink)

When is a proposition true? It is common to expert an answer of the form “at instant x”. In section I) I present an example of the consequences that such instantaneous semantics in tense logic can have, and review some of the problems that have led to the proposal of using intervals, rather than instants, as the indices at which to evaluate propositions. In the section II) I present some of the problems with the intervals themselves, and in section III) (...) I consider the possibilities of having he best of both worlds. Due to the still tentative character of interval semantics, I focus on the consideration of metatheoretical issues rather than on the technical points of the particular systems of interval semantics so far proposed. (shrink)

The principle of overlap of classes holds that when two entities interface, the effect is a blurring of boundaries between conceptual territories. In this paper, this question is in order: Is Folk Catholicism an instance of overlap of classes? If Folk Catholicism is not construed as such, these fallacies – using Robin George Collingwood’s perspective in his An Essay on Philosophical Method, may unfold: the fallacy of precarious margins, the fallacy of identified coincidents, and the fallacy of false disjunction. The (...) first fallacy holds that the ‘Folk’ in Folk Catholicism has no contribution to how ‘Catholicism’ unfolds. The second fallacy maintains that the extensions of both ‘Folk’ and ‘Catholicism’ are clearly delineated. The third fallacy underscores that Folk and Catholicism are mutually exclusive terms. When such fallacies are accepted, this paper holds that Folk Catholicism as a construct may be a contradiction of terms on what it means to be Folk and Catholic. This is the illogical consequence given that the truth of what it means to be folk necessitates the falsity of what it means to be Catholic and vice-versa. However, when recognized from the lens of the overlap, Folk Catholicism is construed as a term that evolves and is historically conditioned. (shrink)

An initial study of Robin George Collingwood's The Principles of Art and Benedetto Croce's Aesthetic: A Science ofExpression and General Linguistic gives an immediate impression that Collingwood appropriated and incorporated many elements in Croce's work to his own position. This is probably the main reason why Collingwood, in his correspondence with Croce, sincerely expressed his gratitude to the Italian Philosopher for laying the foundation of his art-theory. Collingwood's acknowledgement of Croce's influence and the apparentsimilarity in their theories on art disposes (...) us to wonder if Collingwood mayhave only extended, hence, reiterated the principles of Croce's position. Given this impression, the present article hopes to provide a study between Collingwood's and Croce's theories of art in the hope that we can tease out a crucial difference between their standpoints. If we can demonstrate a significant difference, then we may have provided ourselves with the cudgels to assert that Collingwood's theory of art is also unique. (shrink)

Plato's Dialogues One by One interprets and contextualizes each of Plato's dialogues. Victorino Tejera analyzes and explains the content and intellectual quality of the dialogues, highlighting their dramatic aliveness and historico-political allusiveness. He treats each dialogue according to its own integrity, not imposing any system outside of their individual composition, and with an even-handedness that does not place too much emphasis on any aspect or neglect any included concept. With this approach, Tejera seeks to free Plato from the constraints (...) constructed by Academia and to treat him as the open-minded intellectual son of Socrates, releasing the free-flying swan that in the myth became the home of the soul of the master. (shrink)

Victorino Tejera combines an American naturalist approach to Aristotle's modes of knowing with new applications of Justus Buchler's systematic metaphysics. Bridging the gap between classical and modern, Tejera reveals a cohesive revitalization of metaphysical naturalism for contemporary scholars.

We look at two fundamental logical processes, often intertwined in planning and problem solving: inference and update. Inference is an internal process with which we uncover what is implicit in the information we already have. Update, on the other hand, is produced by external communication, usually in the form of announcements and in general in the form of observations, giving us information that might not have been available (even implicitly) before. Both processes have received attention from the logic community, usually (...) separately. In this work, we develop a logical language that allows us to describe them together. We present syntax, semantics and a complete axiom system; we discuss similarities and differences with other approaches and mention how the work can be extended. (shrink)

Tejera examines how Platonism--a philosophy imported from outside Plato's dialogues--changed our understanding of the dialogues.