I will examine the first of Thomas Kuhn’s Thalheimer Lectures delivered in 1984, with the purpose of establishing a connection between Kuhn’s historiographical thought and his criticism of the traditional distinction between the context of discovery and the context of justification, or, as I call it, the DJ distinction. In order to do this, I will start by exploring the Kuhnian view of the so-called static approach in philosophy of science, taking as my main reference the work of Bacon, Descartes, (...) and foundationalist epistemology. I will continue by examining the relationship between Kuhnian historiography and the DJ distinction, comparing the first Thalheimer Lecture with other texts published by Kuhn. Finally, I will assert that Kuhn’s rejection of the DJ distinction is the result of adopting a historiographical matrix whose philosophical consequences are irreconcilable with the static approach in history and philosophy of science, for which the DJ distinction is essential. (shrink)

This paper examines ‘The Natures of Conceptual Change’, the Notre Dame lectures given by Kuhn in 1980. In particular, I aim to examine the content of these lectures which was not published before. This exegetical task will shed light on the sources of the notion of taxonomy used in these lectures for the first time with the explicit philosophical purposes. It also will shed new light on Kuhn's position regarding the causal theory of reference. Reviewing these archival materials paves the (...) way for intertextual comparisons, as Kuhn included part of these lectures in the texts published later and in the book Plurality of Worlds: an Evolutionary Theory of Scientific Development. In recent years, the publication of Kuhn's archival material and the research on these texts increased in quantity and quality. Faced with this encouraging landscape, a comparative examination of the different unpublished texts is crucial to refining both our research tools on Kuhn's intellectual biography and the philosophical work inspired by his proposal. (shrink)

This paper explores Thomas Kuhn’s intellectual history by examining sources that have been understudied so far: the Lowell Lectures of 1951 (The Quest for Physical Theory) and the hitherto unpublished Notre Dame Lectures of 1980. The analysis of these texts aims to reconstruct Kuhn’s development of a semantics that can account for scientific progress. This analysis will show that the alleged “linguistic turn” attributed to the author is actually a renewed interest in problems that existed well before publishing The Structure (...) of Scientific Revolutions. (shrink)

En Razón, Verdad e Historia Hilary Putnam caracterizó la racionalidad informal como una alternativa que permite superar las limitaciones evidenciadas por las concepciones formalistas de la racionalidad. Se revisa inicialmente la caracterización ofrecida por Putnam y se establece que si bien Putnam niega todo principio universal de racionalidad, admite principios relativos, generales e indeterminados, que permanecen sujetos a necesidades de interrelación cognitiva con el entorno. A continuación, se muestra que los principios aceptan excepciones, y, a partir de aquí se defiende (...) y analiza la posibilidad de revisión de principios cuya negación no resulta actualmente concebible. Finalmente, se afirma que tanto exponer como preservar creencias de la controversia constituyen elementos históricos que deben ser contemplados por una concepción informal de la racionalidad. In Reason, Truth and History, Hilary Putnam characterized informal rationality as an alternative that allows to overcome limitations evidenced by the formalist conceptions of rationality. Initially, the paper reviews the characterization provided by Putnam and establishes that, while Putnam denies any universal principle of rationality, he accepts relative, general and vague principles, that remain subject to needs of cognitive interrelationship with the environment. Secondly, we show that principles make exceptions and defend the possibility of reviewing principles whose denial is currently not conceivable. Finally, we state that both expressing and maintaining beliefs of controversy are historical elements that should be contemplated by an informal conception of rationality. (shrink)

Estudios de filosofía contemporánea, lleva por título este volumen que reúne varios trabajos del Prof. Ricardo Navia, algunos publicados previamente en revistas especializadas de Brasil y Perú, otros que se editan por primera vez. No obstante tratarse de artículos independientes, la obra presenta continuidad temática en torno a problemas de teoría del conocimiento, filosofía del lenguaje y metafilosofía, especialmente centrados en la filosofía de la segunda mitad del siglo XX.

I will present a comparative analysis between Thomas Kuhn's The Copernican Revolution published in 1957 and The Structure of Scientific Revolutions published in 1962, ir order to identify divergences in the views contained in each work. I shall set forth a comparative analysis of the historiographical assumptions employed by Kuhn in each of his books. I will explore some proposals which have pointed out several discontinuities between both books, as I introduce some tools to widen this interpretative trend. I will (...) argue that although Kuhn’s work in 1957 contains some concerns and problems which anticipate his later stances, these anticipations coexist with historiographical formulations and premises which are incompatible with the core of SSR. Therefore, I will assert that Kuhn adopts different historiographical frameworks in CR and in SSR. Finally, I will conclude that these differences are expressions of Kuhn's adoption of a more externalist view in the former, and a more internalist frame in the latter. (shrink)

El problema de determinar cuál es el método de la Ciencia de la Información ha sido objeto de distintos abordajes y propuestas metodológicas. En este trabajo defendemos que dichos problemas usualmente se han planteado de manera errónea, y que su planteo no contribuye a una mejora del campo. Comenzamos con un recorrido por diferentes propuestas metodológicas, señalando el consenso existente sobre el impacto de la indagación metodológica en el status científico de la disciplina. Luego rastreamos la influencia del positivismo en (...) la metodología de la CI, sosteniendo que la concepción positivista del método científico aún sigue gobernando de forma implícita la autopercepción epistemológica de la disciplina. Finalmente ensayamos una lectura de algunos problemas metodológicos basada en la filosofía de Thomas Kuhn, enfatizando que no es la reflexión metodológica, sino el desarrollo de una tradición exitosa de resolución de problemas lo que consolida el status científico. (shrink)

The present paper proposes a critical revision of the massive truth notion, in the context of Donald Davidson’s criticism to skepticism. It´s distinguished in Davidson’s work a cuantitative sense and a cualitative sense of the massive truth, asserting that the first one has been more frequently used and has had just an intuitive level of elucidation. The main problems associated to the cuantitative notion of massive truth are revised in relation to the quantification of beliefs, the detection of error on (...) a background of truth and the application of the Davidsonian methodology to non perceptual beliefs. Over this revision it is proposed the substitution of the cuantitative notion of massive truth for a cualitative notion, and are analized its advantages over eventual skeptical objections. (shrink)

En 1983 Thomas Kuhn introdujo la distinción entre interpretación y traducción, con el propósito de fortalecer la tesis de la inconmensurabilidad y responder a objeciones formuladas por Donald Davidson y Hilary Putnam. A partir de este contexto de debate, este trabajo revisa la distinción kuhniana con el objetivo de explorar las conexiones que pueden establecerse entre las teorías rivales y las comunidades científicas que las defienden. Para ello examino el papel de la traducción, la interpretación y la comunicación en el (...) cambio teórico, con el propósito de ampliar la distinción de Kuhn y ahondar en algunas consecuencias no contempladas en su planteo original. Concluyo que la distinción entre estos planos lingüísticos resulta fundamental para comprender y evaluar el alcance de las divergencias suscitadas en casos de inconmensurabilidad. (shrink)

Este trabajo discute una de las objeciones de N. Hall al análisis contrafactual de D. Lewis. Según Hall, los intentos de fortalecer el análisis contrafactual se apoyan en la aceptación de la transitividad, la localidad y el carácter intrínseco de las relaciones causales. Esto es problemático en cuanto el concepto de doble prevención evidencia tensiones entre estas tres tesis y el concepto de dependencia, central en el análisis de Lewis. Revisando uno de los ejemplos de Hall, se defiende que su (...) crítica al análisis contrafactual cumple parcialmente su objetivo en referencia a la localidad, ya que sólo una de las estructuras causales que Hall presenta acepta la dependencia y no la localidad, no tratándose de un típico caso de doble prevención. Finalmente se propone la denominación early doble prevention para los casos que aceptan la dependencia y no la localidad, y late doble prevention para los que aceptan ambas tesis. This paper discusses one of the objections made by N. Hall to D. Lewis's counterfactual analysis. According to Hall, the attempts to strengthen the counterfactual analysis are supported by the acceptance of transitivity, locality and intrinsic nature of causal relationships. This is problematic, as the concept of double prevention demonstrates the tensions existing among these three theses and the concept of dependence which is central in Lewis's analysis. By studying one of the examples given by Hall, we can sustain that his criticism to counterfactual analysis partially fulfills its goal in reference to locality, taking into account that only one of the causal structures exposed by Hall accept dependence but not locality and is not a typical example of double prevention. Finally we suggest the name of early double prevention for those cases that accept the dependency but not the locality, and late double prevention for those accepting both theses. (shrink)

The paper discusses certain discrepancies between The Copernican Revolution (1957) and The Structure of Scientific Revolutions (1962) by Thomas Kuhn. It shows that they present a different consideration of extra-scientific factors, that in the former have a higher explanatory weight. It states that in 1957 Kuhn applies a casuistical historiography, focused on the Copernican revolution, and in 1962 a structural historiography, focused on the invariable features of scientific revolutions. The paper concludes that the differences between these two works are significant (...) enough so as not to be considered an expression of the same view of science. (shrink)

Resumen: Janet Folina ha propuesto una interpretación del convencionalismo de Poincaré contraria a la que ofrecen Michael Friedman y Robert DiSalle. Ambos afirman que la propuesta de Poincaré queda refutada por la relati-vidad general pues supone una noción restrictiva de los principios a priori. Folina sostiene que el convencionalismo de Poincaré no es contradictorio con la relatividad general porque permite una noción relativizada de los princi-pios a priori. Intento mostrar que la estrategia de Folina es ineficaz porque Poincaré no puede (...) explicar el papel de la variedad de Riemann en la rela-tividad general. Concluyo que la tentativa de reconstruir el desarrollo de la relatividad general a partir de la filosofía de Poincaré puede constituir un obs-táculo para comprender la radicalidad del cambio que la relatividad generó en las relaciones entre física y geometría.: Janet Folina has proposed an interpretation of Poincaré’s conven-tionalism against Michael Friedman and Robert DiSalle. They both state that Poincaré’s proposal is refuted by general relativity, since it implies a restrictive notion of a priori principles. Folina claims that Poincaré’s conventionalism is not in conflict with general relativity because from Poincaré’s proposal it is possible to extract a relativized notion of a priori principles. I intend to show that Folina’s strategy is ineffective due to Poincaré’s inability to explain the role of Riemann manifold in general relativity. I conclude that the attempt to reconstruct the development of general relativity from Poincaré’s philosophy may be an obstacle to understanding the radical nature of the change that relativity brought to the relationship between physics and geometry. (shrink)

Frecuentemente se atribuye al empirismo apelar a principios no empíricos para defender el conocimiento empírico, por ello se le ha acusado de incurrir en cierta clase de autorrefutación. Con el advenimiento del empirismo lógico, esta objeción tomó la forma de cuestionamiento al criterio empirista de significado, señalando que, al no tratarse de una proposición lógica ni empírica, no cumple con sus propias condiciones de significatividad. En este artículo pretendo mostrar que dentro del empirismo lógico se desarrollaron respuestas a estas críticas, (...) lo suficientemente consistentes como para resistir la objeción de autorrefutación. Asimismo, defiendo que la afirmación de autorrefutación del criterio empirista de significado parte de comprensión inadecuada de los niveles lingüísticos involucrados en su formulación, así como de algunos supuestos no explícitos respecto de su estatus. Empiricism has frequently been said to appeal to non-empirical principles to defend empirical knowledge, which is why it has been accused of falling into some form of self-refutation. With the advent of logical empiricism, this objection became a questioning of the empiricist criterion of meaning, noting that since it is neither a logical nor an empirical proposition, it does not fulfill its own conditions of meaningfulness. This paper intends to show that responses to this criticism, consistent enough to resist the objection of self-refutation, have been developed whithin logical empiricism. In addition, the article claims that the assertion that the empiricist criterion of meaning is self-refuting is based on an inadequate understanding of the linguistic levels involved in its formulation, as well as on some unspecified assumptions regarding its status. (shrink)

In this work we attempt to analyze the intra-theoretic characterization provided by Hilary Putnam and Werner Heisenberg between quantum mechanics and other theories. The first defended the idea that physical theories include macro principles that under specific definite historical conditions can be revised on the light of rival principles. Putnam will concentrate in the impact that quantum mechanics has produced in the classical image of knowledge. Heisenberg, on the other hand, develops his analysis from the notion of closed theories, assuming (...) the independence and incommensurability of physical theories. These divergences between the two authors will allow us to analyze how the disagreement in the consideration of the status of physical theories, goes deeper into more profound aspects related to the nature of knowledge and the relation between theory and world. (shrink)

We say that a sentence A is a permissive consequence of a set X of premises whenever, if all the premises of X hold up to some standard, then A holds to some weaker standard. In this paper, we focus on a three-valued version of this notion, which we call strict-to-tolerant consequence, and discuss its fruitfulness toward a unified treatment of the paradoxes of vagueness and self-referential truth. For vagueness, st-consequence supports the principle of tolerance; for truth, it supports the (...) requisite of transparency. Permissive consequence is non-transitive, however, but this feature is argued to be an essential component to the understanding of paradoxical reasoning in cases involving vagueness or self-reference. (shrink)

RésuméAu cœur de la théorie de Sophia Moreau sur la discrimination répréhensible réside le devoir moral de traiter les autres comme des êtres égaux. Cet essai soulève quelques questions sur les contours de ce devoir et suggère des moyens de renforcer la théorie. En particulier, il suggère d'intégrer une vision cosmopolite de la portée de ce devoir, d’éclairer les caractéristiques à la base du statut moral égal des personnes afin d'en identifier les fondements, ainsi que d'identifier certaines considérations relatives à (...) des intérêts d'importance afin d'en préciser le contenu. La relation entre la théorie de Moreau et le discours sur les droits humains est également brièvement examinée, et une discussion plus approfondie de ce dernier est recommandée. (shrink)

How should political power and influence be allocated in democratic systems? That is, roughly, the core of the boundary problem in democratic theory. As of late, some authors have begun paying increased attention to the methodological aspects of this dispute. This paper attempts to make a twofold contribution to this ‘methodological turn’. On the one hand, it identifies and analyzes five desiderata of a successful principle of democratic inclusion. Any such principle, I argue, must be grounded in a clearly identifiable (...) set of values, must provide a clear standard of inclusion, must specify the relevant modalities of inclusion, must provide sound bridging principles, and must be extensionally adequate. In the first half of the paper, these desiderata are developed and critically scrutinized. On the other hand, I also extract three lessons from the previous discussion. First, that a unique answer to the boundary problem (i.e. one grounded in one single principle) is unlikely. Second, that a satisfactory answer to the boundary problem need not necessarily appeal, as some have argued, to distinctively democratic values. And third, that intuitions about political exclusion (i.e. those requiring or permitting the exclusion of some individuals) should be treated with special caution. (shrink)

In this chapter we use methods of corpus linguistics to investigate the ways in which mathematicians describe their work as explanatory in their research papers. We analyse use of the words explain/explanation (and various related words and expressions) in a large corpus of texts containing research papers in mathematics and in physical sciences, comparing this with their use in corpora of general, day-to-day English. We find that although mathematicians do use this family of words, such use is considerably less prevalent (...) in mathematics papers than in physics papers or in general English. Furthermore, we find that the proportion with which mathematicians use expressions related to ‘explaining why’ and ‘explaining how’ is significantly different to the equivalent proportion in physics and in general English. We discuss possible accounts for these differences. (shrink)

The main purpose of these introductory remarks is to give the reader a sense of Philip Rossi’s philosophical project and its importance. I will then advance an interpretation of what motivates Kant’s commitment to community, and, on its basis, object to Rossi’s views on radical evil –a point which affects how one should conceive the moral vocation of humanity and the role that politics and religion play within it. My reconstruction concludes with a sketch of how the five contributions to (...) this Symposium fit together and deepen our understanding of Rossi’s overall project. (shrink)

In a recent paper, Barrio, Tajer and Rosenblatt establish a correspondence between metainferences holding in the strict-tolerant logic of transparent truth ST+ and inferences holding in the logic of paradox LP+. They argue that LP+ is ST+’s external logic and they question whether ST+’s solution to the semantic paradoxes is fundamentally different from LP+’s. Here we establish that by parity of reasoning, ST+ can be related to LP+’s dual logic K3+. We clarify the distinction between internal and external logic and (...) argue that while ST+’s nonclassicality can be granted, its self-dual character does not tie it to LP+ more closely than to K3+. (shrink)

Supervaluationism is a well known theory of vagueness. Subvaluationism is a less well known theory of vagueness. But these theories cannot be taken apart, for they are in a relation of duality that can be made precise. This paper provides an introduction to the subvaluationist theory of vagueness in connection to its dual, supervaluationism. A survey on the supervaluationist theory can be found in the Compass paper of Keefe (2008); our presentation of the theory in this paper will be short (...) to get rapidly into the logical issues. This paper is relatively self-contained. A modest background on propositional modal logic is, though not strictly necessary, advisable. The reader might find useful the Compass papers Kracht (2011) and Negri (2011) (though these papers cover issues of more complexity than what is demanded to follow this paper). (shrink)

Michel Janssen and Harvey Brown have driven a prominent recent debate concerning the direction of an alleged arrow of explanation between Minkowski spacetime and Lorentz invariance of dynamical laws in special relativity. In this article, I critically assess this controversy with the aim of clarifying the explanatory foundations of the theory. First, I show that two assumptions shared by the parties—that the dispute is independent of issues concerning spacetime ontology, and that there is an urgent need for a constructive interpretation (...) of special relativity—are problematic and negatively affect the debate. Second, I argue that the whole discussion relies on a misleading conception of the link between Minkowski spacetime structure and Lorentz invari-ance, a misconception that in turn sheds more shadows than light on our understand-ing of the explanatory nature and power of Einstein’s theory. I state that the arrow connecting Lorentz invariance and Minkowski spacetime is not explanatory and uni-directional, but analytic and bidirectional, and that this analytic arrow grounds the chronogeometric explanations of physical phenomena that special relativity offers. (shrink)

Frost's article advocates for universal models of reading and critiques recent models that concentrate in what has been described as “cracking the orthographic code.” Although the challenge to develop models that can account for word recognition beyond Indo-European languages is welcomed, we argue that reading models should also be constrained by general principles of visual processing and object recognition.

To what degree can language be acquired from linguistic input alone? This question has vexed scholars for millennia and is still a major focus of debate in the cognitive science of language. The complexity of human language has hampered progress because studies of language–especially those involving computational modeling–have only been able to deal with small fragments of our linguistic skills. We suggest that the most recent generation of Large Language Models (LLMs) might finally provide the computational tools to determine empirically (...) how much of the human language ability can be acquired from linguistic experience. LLMs are sophisticated deep learning architectures trained on vast amounts of natural language data, enabling them to perform an impressive range of linguistic tasks. We argue that, despite their clear semantic and pragmatic limitations, LLMs have already demonstrated that human-like grammatical language can be acquired without the need for a built-in grammar. Thus, while there is still much to learn about how humans acquire and use language, LLMs provide full-fledged computational models for cognitive scientists to empirically evaluate just how far statistical learning might take us in explaining the full complexity of human language. (shrink)

In this paper we investigate a semantics for first-order logic originally proposed by R. van Rooij to account for the idea that vague predicates are tolerant, that is, for the principle that if x is P, then y should be P whenever y is similar enough to x. The semantics, which makes use of indifference relations to model similarity, rests on the interaction of three notions of truth: the classical notion, and two dual notions simultaneously defined in terms of it, (...) which we call tolerant truth and strict truth. We characterize the space of consequence relations definable in terms of those and discuss the kind of solution this gives to the sorites paradox. We discuss some applications of the framework to the pragmatics and psycholinguistics of vague predicates, in particular regarding judgments about borderline cases. (shrink)

In a previous paper (see ‘Tolerant, Classical, Strict’, henceforth TCS) we investigated a semantic framework to deal with the idea that vague predicates are tolerant, namely that small changes do not affect the applicability of a vague predicate even if large changes do. Our approach there rests on two main ideas. First, given a classical extension of a predicate, we can define a strict and a tolerant extension depending on an indifference relation associated to that predicate. Second, we can use (...) these notions of satisfaction to define mixed consequence relations that capture non-transitive tolerant reasoning. Although we gave some empirical motivation for the use of strict and tolerant extensions, making use of them commits us to the view that sentences of the form ‘ p∨¬p ’ and ‘ p∧¬p ’ are not automatically valid or unsatisfiable, respectively. Some philosophers might take this commitment as a negative outcome of our previous proposal. We think, however, that the general ideas underlying our previous approach to vagueness can be implemented in a variety of ways. This paper explores the possibility of defining mixed notions of consequence in the more classical super/sub-valuationist setting and examines to what extent any of these notions captures non-transitive tolerant reasoning. (shrink)

One way in which we might approach the challenge posed by the Sorites Paradox is considering that Sorites-susceptible predicates have several candidate extensions, or several ways in which these expressions can be made precise. For example, a candidate extension for the predicate ‘is a baby’ is the set of humans of less than two years, but also the set of those less than two years and one second, and of those less than two years and two seconds. In this chapter (...) we present and discuss two theories for vague predicates based on this idea: supervaluationism and subvaluationism. The chapter is structured in three parts. The first presents the super- and subvaluationist theories: their similarities and differences in the semantics, the resulting logics with their most characteristic features. The second reviews the super- and subvaluationist solutions to the Sorites Paradox and provides discussion on several controversies surrounding these theories. The third part introduces proof procedures for s’valuationist logics. (shrink)

Topics in Cognitive Science, Volume 14, Issue 3, Page 634-645, July 2022.

This paper presents and defends a way to add a transparent truth predicate to classical logic, such that and A are everywhere intersubstitutable, where all T-biconditionals hold, and where truth can be made compositional. A key feature of our framework, called STTT (for Strict-Tolerant Transparent Truth), is that it supports a non-transitive relation of consequence. At the same time, it can be seen that the only failures of transitivity STTT allows for arise in paradoxical cases.

When we speak about different interpretations of quantum mechanics it is suggested that there is one single quantum theory that can be interpreted in different ways. However, after an explicit characterization of what it is to interpret quantum mechanics, the right diagnosis is that we have a case of predictively equivalent rival theories. I extract some lessons regarding the resulting underdetermination of theory choice. Issues about theoretical identity, theoretical and methodological pluralism, and the prospects for a realist stance towards quantum (...) theory can be properly addressed once we recognize that interpretations of quantum mechanics are rival theories. (shrink)

A partir da pergunta que dá título a este artigo, pretendemos posicionar o pensamento de Michel Foucault em relação ao materialismo através de uma análise que contemple as três fases de seu pensamento, a saber, a arqueologia, a genealogia e a ética. Mediante esta análise, concluímos não só pela filiação do pensamento de Michel Foucault no campo mais amplo e plural dos materialismos, mas também pela radicalidade que o filósofo assume em relação ao materialismo em todas as fases de seu (...) pensamento. Do ponto de vista da arqueologia, argumentamos que a tomada do discurso não em seu caráter representativo, significativo ou teleológico, mas na concretude e singularidade de seu aparecimento, reforça de forma significativa o materialismo; em relação à genealogia, mostramos como a microfísica do poder, ao voltar-se contra os efeitos de hegemonia que produzem a abstração dos Grandes Conceitos e das Grandes Coisas, revelam a materialidade de um jogo de forças sujeitado pelas formas oficiais do saber e do poder; por fim, do ponto de vista da ética, esclarecemos que o âmbito da análise da relação de si consigo não consiste no domínio da interioridade, refúgio último do imaterialismo, mas justamente no âmbito da produção de subjetividade determinada por uma relação com a exterioridade, a alteridade e o fora. Dessa forma, consideramos a noção de Materialismo Radical pertinente para compreendermos, de forma mais rigorosa, tanto certas características próprias ao pensamento de Michel Foucault, quanto sua indubitável filiação ao materialismo. (shrink)

This paper is concerned with the claim that supervaluationist consequence is not classical for a language including an operator for definiteness. Although there is some sense in which this claim is uncontroversial, there is a sense in which the claim must be qualified. In particular I defend Keefe's position according to which supervaluationism is classical except when the inference from phi to Dphi is involved. The paper provides a precise content to this claim showing that we might provide complete (and (...) sound) systems of deduction for supervaluationist consequence in which proofs are completely classical with the exception of a single last step (involving the above mentioned inference). (shrink)

According to a popular narrative, in 1932 von Neumann introduced a theorem that intended to be a proof of the impossibility of hidden variables in quantum mechanics. However, the narrative goes, Bell later spotted a flaw that allegedly shows its irrelevance. Bell’s widely accepted criticism has been challenged by Bub and Dieks: they claim that the proof shows that viable hidden variables theories cannot be theories in Hilbert space. Bub’s and Dieks’ reassessment has been in turn challenged by Mermin and (...) Schack. Hereby I critically assess their reply, with the aim of bringing further clarification concerning the meaning, scope and relevance of von Neumann’s theorem. I show that despite Mermin and Schack’s response, Bub’s and Dieks’ reassessment is quite correct, and that this reading gets strongly reinforced when we carefully consider the connection between von Neumann’s proof and Gleason’s theorem. (shrink)

It is a widespread belief that the Kochen-Specker theorem imposes a contextuality constraint on the ontology of beables in quantum hidden variables theories. On the other hand, after Bell’s influential critique, the importance of von Neumann’s wrongly called ‘impossibility proof’ has been severely questioned. However, Max Jammer, Jeffrey Bub and Dennis Dieks have proposed insightful reassessments of von Neumann’s theorem: what it really shows is that hidden variables theories cannot represent their beables by means of Hermitian operators in Hilbert space. (...) Hereby I show that i) the very same constraint can be derived from Gleason’s theorem, and that ii) if we consider the import of von Neumann’s and Gleason’s theorems, the relevance of the Kochen-Specker theorem for hidden variables theories gets substantially weakened: it does not force them to be contextual in any interesting sense of the term. (shrink)

Nietzsche understands that the world unfolds as a will to power. If we want to properly understand this cosmological perspective, we must start by attributing immanent activity not only to organisms, but also to beings called “inorganic”. With this in mind, in this article we examine, in an “ascending” way, the features of the vital becoming in both strata, that is, from the minerals, with their attractions and repulsions, until reaching the man himself and his conscious operations. All the problems (...) involved in this monistic perspective are approached from argumentations that are based on Nietzsche’s readings. Strauss, Dubois Reymond, Herzen, Spencer, Lange, Delfœuf, are some of the cited sources that allow this writing to give an account of how Nietzsche makes life prevail, beyond being, as the primordial phenomenon in all orders. (shrink)

In 1991 Larry Laudan and Jarret Leplin proposed a solution for the problem of empirical equivalence and the empirical underdetermination that is often thought to result from it. In this paper we argue that, even though Laudan and Leplin’s reasoning is essentially correct, their solution should be accurately assessed in order to appreciate its nature and scope. Indeed, Laudan and Leplin’s analysis does not succeed in completely removing the problem or, as they put it, in refuting the thesis of underdetermination (...) as a consequence of empirical equivalence. Instead, what they show is merely that science possesses tools that may eventually lead out of an underdetermination impasse. We apply their argument to a real case of two empirically equivalent theories: Lorentz’s ether theory and Einstein’s special relativity. This example illustrates the validity of Laudan and Leplin’s reasoning, but also shows the importance of the reassessment we argue for. (shrink)

In this paper I argue that the case of Einstein׳s special relativity vs. Hendrik Lorentz׳s ether theory can be decided in terms of empirical evidence, in spite of the predictive equivalence between the theories. In the historical and philosophical literature this case has been typically addressed focusing on non-empirical features. I claim that non-empirical features are not enough to provide a fully objective and uniquely determined choice in instances of empirical equivalence. However, I argue that if we consider arguments proposed (...) by Richard Boyd, and by Larry Laudan and Jarret Leplin, a choice based on non-entailed empirical evidence favoring Einstein׳s theory can be made. (shrink)

Substructural approaches to paradoxes have attracted much attention from the philosophical community in the last decade. In this paper we focus on two substructural logics, named ST and TS, along with two structural cousins, LP and K3. It is well known that LP and K3 are duals in the sense that an inference is valid in one logic just in case the contrapositive is valid in the other logic. As a consequence of this duality, theories based on either logic are (...) tightly connected since many of the arguments for and objections against one theory reappear in the other theory in dual form. The target of the paper is making explicit in exactly what way, if any, ST and TS are dual to one another. The connection will allow us to gain a more fine-grained understanding of these logics and of the theories based on them. In particular, we will obtain new insights on two questions concerning ST which are being intensively discussed in the current literature: whether ST preserves classical logic and whether it is LP in sheep’s clothing. Explaining in what way ST and TS are duals requires comparing these logics at a metainferential level. We provide to this end a uniform proof theory to decide on valid metainferences for each of the four logics. This proof procedure allows us to show in a very simple way how different properties of inferences (unsatisfiability, supersatisfiability and antivalidity) that behave in very different ways for each logic can be captured in terms of the validity of a metainference. (shrink)