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1. Theoria: An International Journal for Theory, History and Foundations of Science: Volume > 30 > Issue: 1
The editors

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monographic section

2. Theoria: An International Journal for Theory, History and Foundations of Science: Volume > 30 > Issue: 1
Ioannis Votsis, Gerhard Schurz

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3. Theoria: An International Journal for Theory, History and Foundations of Science: Volume > 30 > Issue: 1
Michael Schippers, Mark Siebel

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The debate on probabilistic measures of coherence has focused on evaluating sets of consistent propositions. In this paper we draw attention to the largely neglected question of whether such measures concur with intuitions on test cases with inconsistent propositions and whether they satisfy general adequacy constraints on coherence and inconsistency. While it turns out that, for the vast majority of proposals in their original shape, this question must be answered in the negative, we show that it is possible to adapt many of them in order to improve their performance.El debate sobre las medidas probabilísticas de coherencia se ha centrado en evaluar conjuntos de proposiciones consistentes. En este artículo llamamos la atención sobre una cuestión largamente postergada, a saber, si tales medidas coinciden con las intuiciones sobre los ejemplos de prueba relativos a proposiciones inconsistentes, y si satisfacen condiciones generales de adecuación para la coherencia y la inconsistencia. Aunque esta cuestión se responde negativamente para la mayoría de propuestas, mostramos cómo es posible adaptar muchas de ellas para mejorar su rendimiento en este sentido.
4. Theoria: An International Journal for Theory, History and Foundations of Science: Volume > 30 > Issue: 1
Jonah N. Schupbach

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In (Schupbach 2008), I put forward a “possibility result” for Bayesian Coherentism, showing that there exist plausible sets of ceteris paribus conditions that imply that coherence is truth-conducive. Against this result, Schubert (2012) argues that the specific ceteris paribus conditions I consider are “jointly inconsistent”. In this article, I prove to the contrary that these conditions can consistently be enforced while allowing degrees of coherence to vary. Next, I consider a related criticism, inspired by Olsson’s (2005) constraints on ceteris paribus conditions. This leads to a general discussion of the principle(s) that should guide one in choosing appropriately stringent ceteris paribus conditions.En (Schupbach 2008) planteo un “resultado de posibilidad” para el bayesianismo coherentista mostrando que existen conjuntos plausibles de condiciones ceteris paribus que implican que la coherencia conduce a la verdad. Schubert (2012) argumenta en contra de este resultado que las condiciones ceteris paribus que considero son “inconsistentes tomadas conjuntamente”. En este articulo demuestro, sin embargo, que estas condiciones pueden ser satisfechas permitiendo que los grados de coherencia varien. Abordo despues una critica relacionada con la anterior e inspirada en los requisitos impuestos por Olsson (2005) a las condiciones ceteris paribus. Eso lleva a una discusion general del principio, o principios, que deberia guiarnos para elegir unas condiciones ceterisparibus que sean apropiadas, es decir, que no sean ni muy restrictivas, ni demasiado laxas.
5. Theoria: An International Journal for Theory, History and Foundations of Science: Volume > 30 > Issue: 1
Victor Gijsbers

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Coherence is a measure of how much our beliefs hang together. Understanding is achieved when we see that something is not just a brute, isolated fact. This suggests that it might be possible to use the extant probabilistic measures of coherence to formulate a measure of understanding. We attempt to do so, but it turns out that a coherence theory runs into trouble with the asymmetry of understanding. We identify four difficulties and show how they have been solved by a unification approach to explanation. We also identify four advantages of the coherence approach, and assess the possibilities of reconciling the strengths of the two approaches.La coherencia es una medida sobre cuanta interdependencia hay entre nuestras creencias. La comprension se obtiene cuando vemos que algo no es un hecho bruto, aislado. Esto sugiere la posibilidad de usar las medidas probabilisticas de coherencia al uso para elaborar una medida de la comprension. Explorare esta posibilidad, a pesar de que una teoria de la coherencia tropieza con problemas aqui dado el caracter asimetrico de la comprension. Identifico cuatro dificultades al respecto y muestro como han sido resueltas mediante un enfoque de la explicacion basado en la nocion de unificacion. Tambien identifico cuatro ventajas en la aproximacion desde la coherencia y examino que perspectivas hay de reconciliar los puntos fuertes de ambos planteamientos.
6. Theoria: An International Journal for Theory, History and Foundations of Science: Volume > 30 > Issue: 1
Gerhard Schurz

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Two key ideas of scientific explanation−explanation as causal information and explanation as unification-have frequently been set into mutual opposition. This paper proposes a “dialectical solution” to this conflict, by arguing that causal explanations are preferable to non-causal ones, because they lead to a higherdegree of unification at the level of explaining statistical regularities. The core axioms of the theory of causal nets (TC) are justified because they offer the best if not the only unifying explanation of two statistical phenomena: screening off and linking up. Alternative explanations of the two phenomena are discussed and it isshown why they don’t work. It is demonstrated that although the core axioms of TC are empirically vacuous, extended versions of TC have empirical content by means of which they can generate independently testable predictions.Con frecuencia se han planteado como contrapuestas dos ideas clave en la explicacion cientifica (explicacion como informacion causal y explicacion como unificacion). El presente articulo propone una “solucion dialectica” argumentando que las explicaciones causales son preferibles a las no-causales porque aquellas comportan un mayor grado de unificacion en la explicacion de regularidades estadisticas. Los axiomas centrales de la teoria de redes causales (TC) estan justificados porque ofrecen la mejor, si no la unica, explicacion unificada de dos fenomenos estadisticos: neutralizacion (screening off) y vinculacion (linking up). Se discuten las explicaciones alternativas de estos dos fenomenos y se razona por que no funcionan. Se demuestra ademas que aunque los axiomas centrales de TC son empiricamente vacuos, las versiones extendidas de TC tienen un contenido empirico gracias al cual pueden generar predicciones independientemente contrastables.
7. Theoria: An International Journal for Theory, History and Foundations of Science: Volume > 30 > Issue: 1
Ioannis Votsis

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There is a strong tendency in science to opt for simpler and more unified hypotheses. A view that has often been voiced is that such qualities, though aesthetically pleasing or beautiful, are at best pragmatic considerations in matters of choosing between rival hypotheses. This essay offers a novel conception and an associated measure of unification, both of which are manifestly more than just pragmatic considerations. The discussion commences with a brief survey of some failed attempts to conceptualise unification. It then proceeds to an analysis of the notions of confirmational connectedness and disconnectedness, as these are essential ingredients in the proposed conception of unification and its associated measure. Roughly speaking, the notions attempt to capture the way support flows or fails to flow between the content parts of a hypothesis. Equally roughly, the more the content of a hypothesis is confirmationally connected, i.e. support flows between its content parts, the more that content is unified. Since the confirmational connectedness of two content parts is determined by purely objective matters of fact, the proposed notion and measure of unification are themselves strictly objective, i.e. not merely pragmatic. The essay concludes with a discussion of how the proposed measure handles several examples but also how it relates to the debate over measures of coherence.En la ciencia hay una marcada tendencia a preferir las hipotesis mas simples y unificadas. Una opinion mantenida a menudo es que tales cualidades, aun siendo atractivas o esteticamente satisfactorias, constituyen consideraciones pragmaticas, a lo sumo, en el asunto de la eleccion entre teorias rivales. Este ensayo ofrece una concepcion novedosa de unificacion y una medida asociada a ella, ambas claramente algo mas que meras consideraciones pragmaticas. La discusion comienza con un breve repaso de algunos intentos fallidos de conceptualizar la unificacion. Despues se analizan las nociones de conexion y desconexion confirmacional, componentes esenciales en la nocion de unificacion y la medida asociada que aqui se proponen. Dicho brevemente, esas nociones pretenden captar el modo en que el apoyo discurre o no entre las partes del contenido de las hipotesis. Simplificando, cuanto mas conectado confirmacionalmente esta el contenido de una hipotesis, mas unificado esta. Dado que la conectividad confirmacional de dos partes del contenido esta determinada por cuestiones de hecho objetivas, la nocion y la medida que propongo son tambien estrictamente objetivas, esto es, su valor no es meramente pragmatico. El ensayo concluye con una discusion sobre como la medida propuesta afronta diversos ejemplos y sobre su relacion con el debate sobre las diferentes medidas de coherencia.

articles

8. Theoria: An International Journal for Theory, History and Foundations of Science: Volume > 30 > Issue: 1
Javier Vidal

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En este articulo, desarrollo una version modificada de la teoria de la conciencia en terminos de pensamientos de orden superior. Argumento que un estado mental es consciente cuando va acompanado por un pensamiento de se implicito. Esta nueva version es importante porque puede acomodar la objecion de que un pensamiento de orden superior que es la conclusion de una inferencia consciente no puede hacer que un estado mental se vuelva consciente. Argumento tambien que si la introspeccion consiste en tener un pensamiento de se explicito, puede mantenerse la distincion entre estados mentales conscientes y estados mentales que, ademas, estan bajo introspeccion.In this paper I develop a modified version of the higher-order thought theory of consciousness. I argue that a mental state is conscious when it is accompanied by an implicit de se thought. This new version is important because it can accomodate the objection that a higher-order thought which is the conclusion of a conscious inference is not able to make a state mental conscious. Also I argue that if introspection consists in one’s having an explicit de se thought, the distinction between conscious mental states and mental states which are in addition introspected can be preserved.

in memoriam

9. Theoria: An International Journal for Theory, History and Foundations of Science: Volume > 30 > Issue: 1
Pedro Ribas

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book reviews

10. Theoria: An International Journal for Theory, History and Foundations of Science: Volume > 30 > Issue: 1
Alfredo Marcos

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11. Theoria: An International Journal for Theory, History and Foundations of Science: Volume > 30 > Issue: 1

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12. Theoria: An International Journal for Theory, History and Foundations of Science: Volume > 30 > Issue: 1

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