The main purpose of this essay is to explore the relationship between the incommensurability of paradigms or general theories, a thesis due to Kuhn and Feyerabend, and the idealizations and abstractions that permeate concepts and fundamental laws of physical theories. One can find some unrealistic or idealizational suppositions underlying the semantic level of the differences between the conceptual vocabularies of incommensurable theories, on which these theories rest. This kind of suppositions relates to the idealizations and abstractions involved in forming concepts (...) and formulating laws. Generally, the fundamental laws of physical theories have an abstract and idealized character. Physical theories contain conceptual networks of kind concepts and quantitative concepts, which are interconnected by several sorts of relationships. The discrepancies between such conceptual network, and their underlying assumptions, of alternative paradigms or theories make their comparison at a theoretical level, that is, their commensurability implausible. That at once strengthens the incommensurability thesis and further supports it. In addition, it follows that Kuhn’s philosophy of science indeed involves a version of conceptual or epistemological relativism about science. (shrink)

The main aim of this paper is to provide some probabilistic notions on causality proposed to be applied to the nomic statements which intend to give account of the indeterministic processes within the domain of a scientific theory. In general, such statements are, in more or less extent, idealized statements which rest on a variety of unrealistic suppositions. I try to show how the probability distribution over the final states of an indeterministic process changes accordingly as the nomic statement in (...) question is de-idealized by means of addition of the causally relevant factors. In order to illustrate the study I take few nomic statements from population genetics. Besides, in the course, I attempt to contrast the ideas embraced here with some of the notions of Humphreys´ ontic conceptions of causality and explanation, which are contrary to the epistemic view adopted here about those subjects. (shrink)

En este artículo expongo la concepción estructuralista de la explicación científica como unificación, que se basa en la noción de una relación de incrustación (embedding) entre modelos, en las versiones de Barthelborth y Forge. Ellos mantienen además unas tesis realistas, ciertamente distintas, sobre el poder explicativo de las teorías. Concuerdo con tal enfoque modelo-teórico pero disiento de sus tesis realistas. Primero presento unas críticas a ellas, después, desde una posición conceptualista, con menor compromiso ontológico, introduzco una tesis sobre ciertos patrones (...) metateóricos que forman parte de los marcos conceptuales de las teorías físicas, los cuales aportan tanto poder explicativo como fuerza unificadora. (shrink)

En este escrito se analizan ciertos conceptos del estructuralismo empirista de Bas van Fraassen, en particular, el de representación, para intentar una crítica a su posición con respecto al vínculo entre los modelos de las teorías y, en última instancia, el mundo físico por medio de los modelos de datos, a los cuales van Fraassen les adjudica el papel de representantes de los fenómenos. Al final se delinea, a muy grandes rasgos, una alternativa conceptualista.

Se analizan ciertos conceptos del estructuralismo empirista de Bas van Fraassen, en particular, el de representación, para intentar una crítica a su posición con respecto al vínculo entre los modelos de las teorías y, en última instancia, el mundo físico por medio de los modelos de datos, a los cuales van Fraassen les adjudica el papel de representantes de los fenómenos. Al final se delinea, a muy grandes rasgos, una alternativa conceptualista. The article analyzes certain concepts of the empiricist structuralism (...) of Bas van Fraassen, particularly that of representation, in order to carry out a critique of his position with respect to the link between the models of the theories and, ultimately, the physical world, through data models to which van Fraassen grants the role of representatives of phenomena. Finally, the article outlines a conceptualist alternative. (shrink)

The aim of this paper is to elaborate a notion of explanation which is applicable to stochastic processes such as quantum processes. The model-theoretic approach was adopted in order to delimit appropriate classes, by defining set-theoretical predicates, of different kinds of physical transformations that quantum systems suffer, either of transitions or of transmutations, by interaction or in a spontaneous manner. To explain a singular quantum process consists in showing that it is feasible to model it as an indeterministic process of (...) certain specified kind. (shrink)

In this paper I attempt mainly to elucidate the claim, advanced by Woorward, that the key notion to characterize physical laws is that of invariance. I draw a distinction betwen two levels of invariance in order to elaborate that thesis. I maintain that distinctive marks of the nomic status of basic laws of physics are either that they hold invariantly, within a domain of applivation, or that they fulfill some principles of symmetry. The fomer mark relatesd to the manner in (...) which physical systems change invariantly whereas the latter concerns to the invariance of the laws themselves. This view contrats with the traditional philosophical thesis that physical laws are true universal statements with a necessary character which differentiate then from accidental true generalizations, which are contingent. (shrink)

The interpretation of probability, dominant in mathematics and other scientific disciplines, that defines the probability of an event S, relatively to a sequence or class of events C, as the quotient of the number of cases in which S occurs and the total number of occurrences of events in C, that..

Could relativist theses about scientific theories be coherent with realist theses about the relationship between such theories and the physical world? This is the central issue of this paper that we approach, mainly, on Giere’s perspectival realism. We consider that his epistemological relativist theses are plausible and sustainable, but his realist thesis about the representational role that plays the theoretical models with respect to real systems as well as his thesis about true hypotheses are not. After trying to show that, (...) we delineate an epistemological version of conceptual relativism which becomes cognate with Giere’s perspectival claims but that it does not comprise realist claims. (shrink)

El objetivo del presente papel de trabajo es el de examinar los problemas derivados de la diferenciación entre matemáticas y dialéctica en República VI-VII. Se trata de una lectura problemática de los pasajes donde se expone el método dialéctico en este diálogo, a saber, el símil de la línea (509c-511e). Todo ello lo pretendemos abordar a la luz de las implicaciones a) epistemológicas, b) ontológicas y c) metodológicas. Mostraremos las dificultades que se derivan de las tres perspectivas propuestas, en torno (...) a la relación de identidad o diferencia entre matemática y dialéctica. Palabras clave: Platón; República; Matemáticas; Dialéctica; UnidadThe aim of this paper is to examine the problems derived from differentiating between Mathematics and Dialectics in Republic VI-VII. We undertake a problematic reading of the passages where dialectic method is expounded in this dialogue, namely, the simile of the line (509c-511e). We intend to approach all of this in the light of implications of these sorts: a) epistemological, b) ontological, and c) methodological. We will show the difficulties, derived from the three perspectives proposed, regarding the relation of identity or difference between Mathematics and Dialectics. Keywords: Plato; Republic; Mathematics; Dialectics; Unity. (shrink)

This article analyzes Toole’s novel from a causal perspective, focusing on the cause-effect dynamics that make the plot advance, from the initial event at D.H. Holmes until the outcome in the Night of Joy. A combination of qualitative and quantitative methodologies has been applied to identify a series of 47 causal events that summarize all actions with an impact on plot development. Our research shows that the causal study of the novel is a useful approach that can reinforce or modify (...) qualitative assessments of previous studies. The relevance of “Night of Joy” plot within the whole narrative and its key role in the rest of the subplots are verified in numerical terms. Besides, we have expanded and quantified the causal chains operating in the novel; and we have made sure, as well, that every subplot is essential in order to reach the final outcome (with the only exception of Dr. Talc’s story). Finally, we have formulated an alternative outline of secondary plots than the ones supported by preceding research by using numeric metrics, demonstrating that “Paradise Vendors” and “Dorian Greene”, previously considered secondary storylines, exert a high impact on Confederacy’s finale, and are, perhaps, not so secondary plots after all. (shrink)

It is estimated that typhoid fever (TF) annually affects more than 12 million persons, worldwide. TF is the result of a generalized infection by the enterobacterium Salmonella typhi. Patients with TF, most of whom live in developing countries have impaired activity for several weeks resulting in an important loss in productivity and welfare. Death may occur, with the single most frequent cause being intestinal perforation. While the first priority must be to develop better methods of disease prevention, there is also (...) an urgent need to devise easy, accurate, and inexpensive diagnostic assays that will allow early routine distinction of TF from other febrile illnesses. Research on TF offers the opportunity to explore many aspects of pathogenesis and the host immune response, as well as to contribute toward the development of new vaccines and diagnostic laboratory tests. (shrink)

En este artículo defendemos el valor de la perspectiva de Ortega sobre el problema del anacronismo en historia. Para ello, exponemos dicho problema en la Escuela de París. Seguidamente, explicamos las aportaciones de Ortega sobre ese problema en los años 40. Finalmente, hacemos un balance de las aportaciones de Ortega y su actualidad.

Collective book dedicated to the philosophical thought of Francisco Suárez.

Updated digital transcription of Spanish translation of the paper by Henry Reeve “The Autobiography of John Stuart Mill”, Edinburgh Review, 134, pp. 91-129, originally published at Revista Europea in 1874.