It is generally assumed that compatibility with special relativity is guaranteed by the invariance of the fundamental equations of quantum physics under Lorentz transformations and the impossibility of transferring energy or information faster than the speed of light. Despite this, various contradictions persist, which make us suspect the solidity of that compatibility. This paper focuses on collapse theories—although they are not the only way of interpreting quantum theory—in order to examine what seems to be insurmountable difficulties we encounter when trying (...) to construct a space–time picture of such typically quantum processes as state vector reduction or the non-separability of entangled systems. The inescapable nature of such difficulties suggests the need to go further in the search for new formulations that surpass our current conceptions of matter and space–time. (shrink)

La finitud o infinitud del universo dividió a los antiguos filósofos alimentando un debate entrelazado con las sutilezas del propio concepto de infinito y la plausibilidad de su realización en el mundo físico. Mientras el siglo XIX dio los primeros pasos en el dominio formal del infinito matemático, la cuestión del tamaño del cosmos quedaba abierta en espera de mejor evidencia empírica. Al término del siglo XX los datos observacionales de la cosmología parecen decantarse por un volumen infinito, si bien (...) en muy pocas ocasiones se subrayan los delicados problemas físicos y metafísicos que tal opción comporta. A consecuencia de ello en este artículo se defenderá, desde una posición finitista que rechaza el infinito factual, la imposibilidad de un volumen tridimensional infinito para el cosmos y, por tanto, la necesidad de revisar este aspecto de nuestros actuales modelos cosmológicos. (shrink)

Since the very begining of quantum theory there started a debate on the proper role of space and time in it. Some authors assumed that space and time have their own algebraic operators. On that basis they supposed that quantum particles had “coordinates of position”, even though those coordinates were not possible to determine with infinite precision. Furthermore, time in quantum physics was taken to be on an equal foot, by means of a so-called “Heisenberg’s fourth relation of indeterminacy” concerning (...) time and energy. In this paper, the proper role of space and time in the core of non-relativistic quantum phsysics is analyzed. We will find that, rigorously, that relation for time and energy shows a different root. For the role of space, it will be discussed that there is no “coordinate of position” in the conceptual structure of quantum physics because quantum particles are not point-like objects. (shrink)

Exposed in 1948, within his masterpiece on the scope and limits of human knowledge, the epistemological tenets that Bertrand Russell regarded as fundamental elements in the construction of scientific knowledge, are still worthy of a detailed discussion today. Given the excellence of the author, it will not be surprising to see that Russell's gnoseologic postulates, even for the present scientific view, address some of the most controversial questions still to be solved in the theory of knowledge.

A lo largo del siglo XX, y en especial a partir del desarrollo de la física cuántica y de la dinámica no lineal, los conceptos de incertidumbre, impredictibilidad e indeterminación han sido fuente de gran confusión, pese a sus distintos significados y aplicaciones. Un somero análisis de las teorías que los emplean permite distinguirlos con suficiente claridad.

El carácter fundamentalmente probabilista de la teoría cuántica cuestionó el realismo como filosofía básica de la ciencia, si bien ciertas interpretaciones instrumentalistas podrían no amenazar por sí solas la existencia de un mundo exterior e independiente de nuestra conciencia. La falta de un valor definido para tales magnitudes antes de la medición alentó la suposición de que tales valores “no existen” antes de la medida. Una reinterpretación de nuestras ideas sobre las magnitudes físicas, considerándolas formalmente representadas por conjuntos de valores (...) en lugar de valores numéricos concretos, ayudaría a disipar toda sombra de irrealidad física. (shrink)

Natural selection is one of the fundamental keys of evolutionary biology, which is as much as saying of almost all life sciences. However, the effort to assess its true meaning has been involved in endless controversies almost from the beginning. The rethinking of natural selection through an abstract scheme with three ingredients - −population, environment and interaction between them− could significantly contribute to clarify this debate.

El carácter fundamentalmente probabilista de la medición de las magnitudes cuánticas, alentó la suposición de que tales valores “no existen” antes de la medida. Una reinterpretación de nuestras ideas sobre las magnitudes físicas, considerándolas formalmente representadas por distribuciones de valores en lugar de valores numéricos concretos, ayudaría a disipar toda sombra de irrealidad física.

En este libro un equipo formado por especialistas españoles y extranjeros pasa revista a los principales aspectos del conocimiento del mundo físico. Los autores combinan la perspectiva científica con la filosófica, en un esfuerzo de diálogo interdisciplinar que quiere estar a la altura de los tiempos. Reflejan la variedad de puntos de vista de los cultivadores de la filosofía de la naturaleza, aunque com¬parten la misma fe en el futuro de la disciplina y en el papel que le corresponde para (...) corregir los desequilibrios de la cultura contemporánea. (shrink)

ResumenLos abundantes análisis filosóficos sobre la física cuántica no se han visto en general acompa- ñados por una consideración equiparable hacia su prolongación natural en la teoría cuántica de campos. Esta teoría se ha revelado en su versión electromagnética como una de las herramientas predictivas más precisas de la ciencia física. No obstante, sus cimientos conceptuales siguen siendo altamente controvertidos y cabe dudar si una ampliación de su formalismo conducirá a la tan deseada unificación de las fuerzas fundamentales, y por (...) ende, a una comprensión global de las propiedades básicas de la naturaleza.Palabras claveFilosofía de la física, teoría cuántica de campos, unificación de fuerzas, predicciónAbstractThe abundant philosophical analyses on quantum physics have not been generally followed by an equivalent consideration toward their natural continuation in the quantum field theory. This theory is regarded in its electromagnetic version as one of the best predictive tools in physical science. Nevertheless, its conceptual foundations are still surrounded by controversy and it is doubtful if an extension of its formalism will lead us to the unification of the four basic forces, and therefore to a global understanding of the basic properties of nature.KeywordsPhilosophy of physics, quantum field theory, unification of forces, prediction. (shrink)

El anuncio en julio de 2012 de los primeros indicios experimentales sobre la existencia del bosón de Higgs, reavivó el interés del secular debate sobre el significado de conceptos como el vacío y los campos físicos. La evolución de sus interpretaciones revela mutaciones profun- das en el trasfondo filosófco de nuestra visión de la naturaleza. Especialmente por cuanto el controvertido papel de las rupturas de simetría se ha añadido a las discusiones sobre las teorías de unificación y la estructura fundamental (...) de la materia. (shrink)

La termodinámica, se desarrolló en gran medida bajo el impulso de la Revolución Industrial, que ayudó a afianzar metodológicamente las seculares investigaciones sobre el calor y la temperatura. Como tal desarrollo se produjo a la sombra de la triunfante mecánica clásica —cuyos referentes físicos son notablemente distintos— y a causa de la carencia de herramientas formales adecuadas, durante mucho tiempo se admitió sin discusión que esta ciencia había de limitarse a los sistemas en equilibrio o muy cercanos a él. En (...) el presente artículo se exponen tanto el desarrollo histórico como las premisas intelectuales de semejante opción epistemológica, señalando el cambio de perspectiva ocurrido en la segunda mitad del siglo XX. (shrink)

Estamos tan habituados a que la ciencia describa la realidad mediante ecuaciones de asombrosa eficacia que raramente nos detenemos a pensar en la gentileza que demuestra el mundo prestándose a ello. ¿Por qué la naturaleza obedece reglas matemáticas tan magníficamente precisas? ¿Es genuinamente matemático el mundo, o tan sólo parece serlo la parte que podemos descubrir de él? Estas y otras cuestiones con ellas relacionadas se discuten en el contenido de esta obra, donde se traza el apasionante viaje que ha (...) llevado a la humanidad a explorar el cosmos con la imprescindible ayuda de las herramientas suministradas por el inagotable caudal de la matemática. (shrink)

En esta obra monumental de Jesper Lützen sobre la mecánica de Heinrich Hertz encontramos una magnífica exposición de la vida y obra de este insigne físico germano. Un interesante relato de las influencias intelectuales que modelaron su pensamiento científico, culmina con un exhaustivo análisis de la reformulación de la mecánica clásica que Hertz planteó poco antes de su prematuro fallecimiento.

This paper presents an interpretation of the paradoxical decision of Abraham done by Søren A. Kierkegaard in his work Fear and Trembling as an ethics of silence. The main idea is to understand ethics not as moral standards or specific duties, but as the responsibility of becoming a single individual in time; singularity as the intimate and personal relationship with the calling of love. In such a way, that silence is the experience of the encounter with the paradox that being (...) human means to be singular in conditions that claim an universal and general transparent manifestation dependent of the dominant rational discourse.Then, silence becomes the fundamental ethical claim to become a human person, as spirit in time, where it becomes a time of trial and examination, a temporality, where the trial is the fidelity to love’s calling, the listening of the possibilities that are presented by the anxiety of the decision. These possibilities are not immanent to the world or to history, they call for a personal choice, always containing a space of revelation; therefore of listening to the interiority of the personal choice that for Kierkegaard is the passion of faith, communicated and lived in silence. Concluding that an ethics of silence by the image of Abraham implies to re-think the role of philosophy in relationship to faith, hope and love in time, as a silent thought. (shrink)

El crecimiento y el desarrollo de la complejidad cultural a lo largo de la historia humana, poseen la forma de una espiral en movimiento que se abre a las posibilidades; desde un punto se extienden una serie de círculos concéntricos que amplían el espectro cultural. Esta apertura la podemos percibir desde un concepto clave en la obra wittgensteineana, a saber, la noción de ver aspectos. Por otra parte, con ella también podemos distinguir y entender otro punto clave en esa dinámica (...) cultural, ello es: la idea de cambio y conflicto social. Así pues, la idea del presente trabajo es mostrar las estructuras epistémicas con las que operan los conflictos y los cambios socioculturales -tan relevantes para el desarrollo social y la teoría antropológica-, tomando como fondo la idea wittgensteineana de visión de aspectos. Con lo que encontramos, que el presente artículo además de ser una contribución al “estudio cultural” con base en un interés epistemológico, pretende vincular la filosofía wittgensteineana con la antropología científica.Palabras clave: Visión de aspectos, conflicto, cambio social, Wittgenstein, epistemología.The growth and development of cultural complexity throughout human history has had the form of a moving spiral that opens to possibilities; from one point, a series of concentric circles is extended that expand the cultural spectrum. This opening can be perceived from a key concept in Wittgenstein’s thought, namely, the notion of seeing aspects. On the other hand, with this concept we can also identify and understand another key point in that cultural dynamic: the idea of change and social conflict. Thus, the idea of this paper is to show the epistemic structures through which conflicts and socio-cultural changes operate, which are so relevant to social development and the anthropological theory, taking the Wittgensteinian idea of seeing aspects as a background. This article is not only a contribution to “cultural study” based on an epistemological interest, but it also tries to link Wittgenstein’s philosophy with scientific anthropology.Key words: Vision of aspects, conflict, social change, Wittgenstein, epistemology. (shrink)

O presente artigo visa tratar do “novo materialismo” na filosofia de Karl Marx após 1845, com a produção das chamadas _Teses ad Feuerbach_. Nesse sentido, buscaremos expor essa nova concepção filosófica através da reformulação da relação sujeito-objeto levada a cabo por Marx, que levou o autor a uma noção crítica de ciência, distinta daquela que vigorava no pensamento europeu e posteriormente caracterizada como tradicional, bem como da crítica da metafísica da economia política. A partir dessas críticas, a concepção marxiana se (...) apresenta como uma continuação da chamada _deutsch Wissenschaft_, uma ciência filosófica, influenciada desde Hegel, que agora coloca o modo de produção capitalista como objeto crítico que constitui uma essência histórica específica e que deve ser conhecida enquanto tomada de consciência de si e por si apontando para a necessidade de rompimento com uma atividade científica instrumentalizada pelas necessidades do desenvolvimento das relações de produção e da valorização da riqueza capitalistas. Nesse sentido, a filosofia marxiana, tendo a negatividade como motor da razão, fundamenta uma teoria crítica e revolucionária da sociedade capitalista e reivindica uma práxis emancipadora e emancipada dos interesses e finalidades da produção capitalista estrita. (shrink)

El presente trabajo expone las similitudes �o coincidencias� entre las obras filosóficas de Paul Ricoeur y Ludwig Wittgenstein. Se establece un marco de comparación entre las categorías memoria-habito y memoria-recuerdo (cuya oposición analiza Ricoeur desde una fenomenología de la memoria en su obra La Memoria, la historia, el olvido) y las categorías ver y ver aspectos (cuya oposición analiza Wittgenstein desde una filosofía del lenguaje en su obra Observaciones sobre la filosofía de la psicología). De estos pares de oposiciones se (...) extraen puntos de comparación que permiten entender la funcionalidad del trabajo historiográfico. (shrink)

A conflict of interest is a situation in which a person has competing loyalties or interests that make it difficult to fulfil his or her duties impartially. Conflict of interest is not categorically improper in itself but requires proper management. A SCOPUS literature search was performed for publications on the efficacy/safety of Phospho-Di-Esterase Inhibitors for treating erectile dysfunction. A categorization tool was used to review and classify the publications as supportive/not-supportive for the discussed active ingredient and reporting or not reporting (...) a COI for that specific drug or for the remaining PDEIs. Multivariable binary logistic regression was performed. In the 419 selected records the prevalence of supportive opinions was higher when a COI for the index label was declared. The CoOpCaT showed good internal consistency, discriminative validity and intra/inter-rater agreement. The strongest predictor for a supportive opinion was the total number of financial COIs for the index label. A mild protective effect of the total number of financial COIs for any competitor label was noted. Financial COIs have frequently been associated with bias, and the measures currently adopted to restrain it lack effectiveness. Some evidence for monitoring and/or compensating this bias is reported here, but the ultimate solution remains distant. (shrink)

El fin de la filosofía. -- Sobre la situación presente del pensamiento. -- Hegel. -- Sobre Soren Kierkegaard. -- La estética de Georg Lukács. -- Georg Buchner. -- Tomás Mann. -- Ernst Junger. -- Lo grotesco literario. -- Borges, el hacedor.

O artigo pretende examinar um aspecto ainda pouco explorado no parágrafo 36 de Além do bem e do mal (BM), a saber: a função e o alcance do princípio da economia para a apresentação da hipótese da vontade de poder. A pertinência do princípio se estabelece, ao menos, a partir de Ockham e Newton, que prescrevem a simplicidade como critério para a decisão entre teorias ou explicações concorrentes. O foco aqui, no entanto, será a adesão efetivada por Richard Avenarius e (...) Ernst Mach, que conduzem o princípio da economia ao centro metodológico de seus empreendimentos filosóficos e são relevantes fontes para o uso que Nietzsche faz do princípio em BM §36. Avalia-se, por fim, que Nietzsche promove a redução econômica e estratégica ao confronto de forças (ou vontades) como alternativa à redução empiriocrítica, restrita a uma compreensão físico-mecânica do mundo, de Avenarius e Mach. Pondera-se também, como contraexemplo do princípio da economia, o paralelismo psicofísico de Wundt. Em suas considerações finais, o artigo indica, como perspectiva para futuros trabalhos, algumas vantagens da abordagem da vontade de poder a partir do princípio em questão, em especial, uma renovada direção para o exame do problema da circularidade e autorreferência. (shrink)

PORTUGUESE: Neste artigo, apresentaremos uma visão particular do desenvolvimento de teorias científicas que denominamos (inspirados em Ortega y Gasset) "perspectivismo". Discutiremos como, através desse enfoque, é possível compatibilizar diversas descrições aparentemente distintas e incompatíveis de uma suposta realidade que se investiga. Fazemos isso distinguindo entre a "realidade" (R) e a "descrição empírica da realidade" (Re). Aceitando que podemos ter diversas descrições empíricas de uma mesma realidade, discutimos o caso particular em que esse esquema é utilizado nos debates atuais acerca da (...) ontologia da física quântica, em especial da mecânica quântica não relativista. Como se sabe, essa teoria é compatível com distintas ontologias (ou metafísicas), em particular, pode ser vista como comprometida com uma ontologia de indivíduos, mas também com uma ontologia de não indivíduos. Ambas as alternativas são plausíveis e merecem ser desenvolvidas. Propomos que o perspectivismo aqui apresentado é neutro com relação à escolha de uma metafísica (ontologia), bem como aos debates entre realistas e antirrealistas em filosofia da ciência. Concluímos que passar do pluralismo aceito pelo perspectivista ao realismo ou antirrealismo envolve comprometimento com teses mais robustas acerca da relação entre realidade e descrição da realidade.ENGLISH: In this article we present a particular view of the development of scientific theories which (following Ortega y Gasset), we term "perspectivism". Making use of this view, we discuss how we can accommodate distinct and apparently incompatible descriptions of a supposed reality under investigation. We distinguish between a "reality" (R) and its "empirical description", (Re). Acknowledging that we can have diverse empirical descriptions of the same reality, we discuss the particular case in which the view is applied to current debates on the ontology of quantum physics, especially of non-relativistic quantum mechanics. As it is well known, this theory is compatible with treating quantum objects either as individuals or as non-individuals. Both ontologies are possible and deserve to be developed. We propose that the perspectivism developed here is neutral not only with respect to the choice of an ontology, but also concerning the debates among realists and anti-realists in the philosophy of science. We conclude that to go beyond the pluralism accepted by perspectivism, and to adopt realism or anti-realism, involves commitment to strong theses about the relation between reality and its descriptions. PORTUGUESE: Neste artigo, apresentaremos uma visão particular do desenvolvimento de teorias científicas que denominamos (inspirados em Ortega y Gasset) "perspectivismo". Discutiremos como, através desse enfoque, é possível compatibilizar diversas descrições aparentemente distintas e incompatíveis de uma suposta realidade que se investiga. Fazemos isso distinguindo entre a "realidade" (R) e a "descrição empírica da realidade" (Re). Aceitando que podemos ter diversas descrições empíricas de uma mesma realidade, discutimos o caso particular em que esse esquema é utilizado nos debates atuais acerca da ontologia da física quântica, em especial da mecânica quântica não relativista. Como se sabe, essa teoria é compatível com distintas ontologias (ou metafísicas), em particular, pode ser vista como comprometida com uma ontologia de indivíduos, mas também com uma ontologia de não indivíduos. Ambas as alternativas são plausíveis e merecem ser desenvolvidas. Propomos que o perspectivismo aqui apresentado é neutro com relação à escolha de uma metafísica (ontologia), bem como aos debates entre realistas e antirrealistas em filosofia da ciência. Concluímos que passar do pluralismo aceito pelo perspectivista ao realismo ou antirrealismo envolve comprometimento com teses mais robustas acerca da relação entre realidade e descrição da realidade. (shrink)

A critically acute summary of the main theories about the 'State', from Greek antiquity to the present. The authors highlight the importance of archaeology to our knowledge of how the first States were formed and how they functioned. They also ask what conditions of social production led to the State arising as the self-interested regulator of social relationships.

Resumen: El objetivo principal de este escrito es proponer un papel propedéutico de las intuiciones racionales, a fin de defender una propuesta híbrida entre el acceso epistémico a priori y a posteriori. Las intuiciones racionales deben ser informadas empíricamente, y descartadas cuando hay pruebas contra ellas, cuando la evidencia empírica muestra que la intuición racional es errada, por lo que cualquier creencia guiada por ella también lo sería. Se sostiene que las intuiciones racionales cumplen un importante rol propedéutico: ayudan a (...) comprender diferentes escenarios modales a través de ejemplificaciones contrafácticas. Esto no se opone a la variación cultural de intuiciones, por ello se propone un confiabilismo intuicional variable. Esta propuesta comprende a las intuiciones como falibles y como no conductoras de verdad: no es el objetivo de las intuiciones rastrear la verdad de alguna proposición, sino ayudar a comprender los escenarios hipotéticos que pueden ser relevantes en diferentes áreas.: The main target of this paper is to propose a preparatory learning role of rational intuitions, in order to defend a hybrid proposal between a priori and a posteriori epistemic access. Rational intuitions must be informed empirically, and discarded when there is evidence against them, when empirical evidence shows that rational intuition is wrong, so any belief guided by it would also be wrong. It is argued that rational intuitions play an important propaedeutic role: they help to understand different modal scenarios through counterfactual exemplifications. This is not opposed to the cultural variation of intuitions, therefore a variable intuitional reliability is proposed. This proposal includes intuitions as fallible and as not truth conducive: it is not the goal of intuitions to trace the truth of a proposition, but to help understand the hypothetical scenarios that may be relevant in different areas. (shrink)

In this paper we present a reconstruction of Hegel's critique of Kant. We try to show the congruence of that critique in both theoretical and practical philosophy. We argue that this congruence is to be found in Hegel's criticism of Kant's hylemorphism in his theoretical and practical philosophy. Hegel is much more sympathetic to Kant's response to the distinction between matter and form in his theoretical philosophy and he credits Kant with ‘discovering’ here that thinking is an activity that always (...) takes place within a greater whole. He, however, argues that the consequences of this are much more significant than Kant suspects and that, most importantly, the model of cognition in which thought (form) confronts something non-thought (matter) is unsustainable. This leads to Hegel's appropriation of Kantian reflective judgements, arguing that the greater whole in which thinking takes place is a socially shared set of meanings, something resembling what Kant calls a sensus communis. From here, it is not far to Hegel's Geist, which eventually gains self-consciousness in Sittlichkeit, a whole of social practices of mutual recognition. In practical philosophy, Hegel argues for the importance of situating oneself within such a whole in order to attain the self-knowledge required for autonomous, or ethically required, action. For this to happen, he claims, it is necessary to recognise the status of Kantian Moralität as a form of Sittlichkeit or social practice. This would justify our practices without an appeal to a ‘fact of reason’ and also allow a wider range of actions that could count as autonomous. (shrink)

This work will examine the main issues generated in the discussion about social justice, freedom and equality from a Marxist and egalitarian liberalism perspective, which would require an answer if the search for a good society continues. Since the world’s economic, social, political and cultural situation has changed in the last decades, nowadays the necessary ethic-political foundations for a fair and free social order must be discussed. The problem is to clarify, in the light of political philosophy and human sciences, (...) the proposals made about such social order and for the current moment, and from the socialist and egalitarian liberal theories with thinkers such as Marx, Cohen and Roemer, for the first, and Rawls, Dworkin Nagel and Sen, for the second, among others. The purpose of this work is mainly didactic and deals with a description of situations such as poverty, exclusion and social inequality that the world lives in. It also deals with the authors’ proposals about such topics, analyzing if there is incompatibility between the capitalist institutions and the socialist project for the achievement of these ideals/values that give origin to the title. (shrink)

According to Locke’s Principle, material objects are identical if and only if they are of the same kind and once occupy the same place at the same time. There is disagreement about whether this principle is true, but what is seldom disputed is that, even if true, the principle fails to constitute an applicable criterion of identity. In this paper, I take issue with two arguments that have been offered in support of this claim by arguing (i) that we can (...) have knowledge of past whereabouts, and so verify the right hand side of Locke’s Principle, without having to assess concrete identity claims first; (ii) that even under conditions of incomplete knowledge of past whereabouts we can use Locke’s Principle to decide concrete identity problems. (shrink)