I apply Kooi and Tamminga's (2012) idea of correspondence analysis for many-valued logics to strong three-valued logic (K3). First, I characterize each possible single entry in the truth-table of a unary or a binary truth-functional operator that could be added to K3 by a basic inference scheme. Second, I define a class of natural deduction systems on the basis of these characterizing basic inference schemes and a natural deduction system for K3. Third, I show that each of the resulting natural (...) deduction systems is sound and complete with respect to its particular semantics. Among other things, I thus obtain a new proof system for Lukasiewicz's three-valued logic. (shrink)

C.S. Peirce's and Isaac Levi's accounts of the belief-doubt-belief model are discussed and evaluated. It is argued that the contemporary study of belief change has metamorphosed into a branch of philosophical logic where empirical considerations have become obsolete. A case is made for reformulations of belief change systems that do allow for empirical tests. Last, a belief change system is presented that (1) uses finite representations of information, (2) can adequately deal with inconsistencies, (3) has finite operations of change, (4) (...) can do without extra-logical elements, and (5) only licenses consistent beliefs. (shrink)

Quine's holistic empiricist account of scientific inquiry can be characterized by three constitutive principles: *noncontradiction*, *universal revisability* and *pragmatic ordering*. We show that these constitutive principles cannot be regarded as statements within a holistic empiricist's scientific theory of the world. This claim is a corollary of our refutation of Katz's [1998, 2002] argument that holistic empiricism suffers from what he calls the Revisability Paradox. According to Katz, Quine's empiricism is incoherent because its constitutive principles cannot themselves be rationally revised. Using (...) Gärdenfors and Makinson's logic of belief revision based on epistemic entrenchment, we argue that Katz wrongly assumes that the constitutive principles are *statements* within a holistic empiricist's theory of the world. Instead, we show that constitutive principles are best seen as *properties* of a holistic empiricist's theory of scientific inquiry and we submit that, without Katz's mistaken assumption, the paradox cannot be formulated. We argue that our perspective on the status of constitutive principles is perfectly in line with Quinean orthodoxy. In conclusion, we compare our findings with van Fraassen's [2002] argument that we should think of empiricism as a stance, rather than as a doctrine. (shrink)

This paper presents two systems of natural deduction for the rejection of non-tautologies of classical propositional logic. The first system is sound and complete with respect to the body of all non-tautologies, the second system is sound and complete with respect to the body of all contradictions. The second system is a subsystem of the first. Starting with Jan Łukasiewicz's work, we describe the historical development of theories of rejection for classical propositional logic. Subsequently, we present the two systems of (...) natural deduction and prove them to be sound and complete. We conclude with a ‘Theorem of Inversion’. (shrink)

While psychologists and political scientists have long investigated issues of interest to philosophers, the development of political experimental philosophy has remained limited. This slow progress is surprising, given that political philosophers commonly acknowledge the relevance of empirical data for normative theorizing. In this chapter, we illustrate the importance of empirical data by outlining recent developments in three domains related to theories of justice, where empirical results reinforce or endanger popular philosophical theories. Our first showcase concerns the boundaries of the concept (...) of fairness. While both libertarian thinkers and social egalitarians have united in rejecting the concept of natural injustice, we show that people do consider that unpreventable natural inequalities can be described as unfair. Second, we take the example of impartiality devices, such as the veil of ignorance or the idea of an impartial spectator, to show that such devices are efficient at shifting people’s intuitions in a more impartial manner. Third, we review empirical data on fairness intuitions to show that people conform to a pluralist theory of justice, valuing desert, needs-satisfaction, and equality at the same time. However, distribution according to desert enjoys a privileged position: people mostly care for the satisfaction of basic needs of deserving recipients, and people are willing to tolerate large inequalities in meritocratic contexts. The centrality of desert leads to dilemmas for mainstream egalitarian theorists, as theories that do not recognize the value of desert could fail to find support or legitimacy within the population. (shrink)

This paper presents a conception of corruption informed by epistemic democratic theory. I first explain the view of corruption as a disease of the political body. Following this view, we have to consider the type of actions that debase a political entity of its constitutive principal in order to assess corruption. Accordingly, we need to consider what the constitutive principle of democracy is. This is the task I undertake in the second section where I explicate democratic legitimacy. I present democracy (...) as a procedure of social inquiry about what ought to be done that includes epistemic and practical considerations. In the third section, I argue that the problem of corruption for a procedural conception of democracy is that the epistemic value of the procedure is diminished by corrupted agents’ lack of concern for truth. Corruption, according to this view, consists in two deformities of truth: lying and bullshit. These deformities corrupt since they conceal private interests under the guise of a concern for truth. In the fourth section, I discuss the difficulties a procedural account may face in formulating solutions to the problem of corruption. (shrink)

The branch of philosophical logic which has become known as “belief change” has, in the course of its development, become alienated from its epistemological origins. However, as formal criteria do not suffice to defend a principled choice between competing systems for belief change, we do need to take their epistemological embedding into account. Here, on the basis of a detailed examination of Isaac Levi's epistemology, we argue for a new direction of belief change research and propose to construct systems for (...) belief change that can do without, but do not rule out, selection functions, in order to enable an *empirical* assessment of the relative merits of competing belief change systems. (shrink)

abstract The moral value of distributive equality constitutes one of the most contentious debates in political philosophy. Following Frankfurt, many philosophers have claimed that the intuitive appeal of equality is illusory and that egalitarian intuitions are fundamentally intuitions about the importance of satisfying basic needs. According to this argument, our intuitions tell us that inequality ceases to matter once a certain threshold has been reached. Despite the widespread appeal to intuitions regarding this issue, few empirical studies have tried to assess (...) whether Frankfurt and his followers are right in claiming the lack of intuitiveness of equality per se. In a series of three experiments, we show that experimental evidence does not allow us to settle the intuitiveness of each theory: laypeople are divided in the consideration of the respective importance of needs and equality. While our results do show that laypeople attach special importance to needs‐fulfilment, it also seems that they are divided when it comes to the importance they grant to equality once needs are fulfilled. No theory is unanimously backed by participants, and it seems that, fundamentally, divisions among philosophers reflect deep divisions among people. (shrink)

Dans l’égoïsme vertueux. Montaigne et la formation de l’esprit libéral (2023), Thierry Gontier considère que Montaigne est le fondateur d’un socle de valeurs vertueusement égoïstes liées à la sphère privée. Nous ralliant à la perspective ouverte par Gontier, nous souhaitons dans cet article examiner la formation de cet égoïsme vertueux à l’aune des influences que les guerres de Religion ont eu sur la pensée politique et morale de Montaigne. Sur la base d’un bref rappel de l’histoire du républicanisme, nous tentons, (...) dans un premier temps, de montrer pourquoi les idéaux républicains et les valeurs qui les accompagnent ne sont plus de mise dans le contexte français du XVIe siècle. Cela nous permet, dans un second temps, d’exposer comment Montaigne, afin de répondre à la crise sociale, déploie une pensée qui, reconnaissant l’importance du bien public, mise néanmoins avant tout sur la conquête de soi. (shrink)

Sensory substitution devices make use of one substituting modality to get access to environmental information normally accessed through another modality . Based on behavioural and neuroimaging data, some authors have claimed that using a vision-substituting device results in visual perception. Reviewing these data, we contend that this claim is untenable. We argue that the kind of information processed by a SSD is metamodal, so that it can be accessed through any sensory modality and that the phenomenology associated with the use (...) of a SSD is best described in terms of spatial phenomenology, only. (shrink)

Tercera Cultura: #TheLibro es una introducción a las ciencias cognitivas -Psicología, Lingüística, Filosofía, Neurociencia, Antropología, Inteligencia Artificial- escrita en un lenguaje simple y claro, ilustrado con ejemplos de la cultura popular, dirigido a estudiantes y geeks de todas las edades.

Concepto es una palabra que refiere a un constructo problemático en la psicología cognitiva y en la filosofía de la mente, el cual indistintamente refiere a cierto tipo de representaciones mentales, a entidades extramentales e incluso a habilidades psicológicas. Lo cierto es que las teorías de conceptos emblemáticas al interior de la filosofía y la psicología, como la Teoría Clásica de conceptos (entendidos como definiciones aristotélicas), o como la Teoría de Prototipos de Rosch (entendidos como estructuras estadísticas de datos), no (...) logran dar cuenta de fenómenos tales como la productividad, la sistematicidad y la composicionalidad del pensamiento humano. Se analizarán los requisitos que una buena teoría psicológica sobre los conceptos debe satisfacer, y se presentará un breve esbozo de la Teoría de Sistemas de Símbolos Perceptuales de Lawrence Barsalou. (shrink)

Este artículo propone, sustentándose en una lectura crítica de las investigaciones realizadas en el ámbito educativo sobre el Pensamiento Crítico, en la necesidad de hacer efectiva una pedagogía cimentada en experiencias significativas de aprendizajes estructuradas desde el Saber, el Hacer y el Ser en la educación militar.

Históricamente ha sido la filosofía, y específicamente la axiología y la ética, la principal disciplina en la cual se ha llevado a cabo la reflexión en torno a los conceptos de virtud y valor. Sin embargo, en las últimas décadas, los avances en disciplinas afines a la filosofía, como la psicología, la antropología y la sociología parece indicar que, para lograr una comprensión cabal de los valores y de la virtud como fenómenos naturales, es necesario complementar los métodos característicos de (...) la reflexión filosófica con métodos empíricos de investigación, para así iluminar la reflexión normativa sobre el “deber ser” con los hallazgos sobre la naturaleza humana, sobre el “es”. (shrink)

Investigations into inter-level relations in computer science, biology and psychology call for an *empirical* turn in the philosophy of mind. Rather than concentrate on *a priori* discussions of inter-level relations between 'completed' sciences, a case is made for the actual study of the way inter-level relations grow out of the developing sciences. Thus, philosophical inquiries will be made more relevant to the sciences, and, more importantly, philosophical accounts of inter-level relations will be testable by confronting them with what really happens (...) in science. Hence, close observation of the ever-changing reduction relations in the developing sciences, and revision of philosophical positions based on these empirical observations, may, in the long run, be more conducive to an adequate understanding of inter-level relations than a traditional *a priori* approach. (shrink)

Control measures, such as “lockdowns”, have been widely used to suppress the COVID-19 pandemic. Under some conditions, they prevent illness and save lives. But they also exact an economic toll. How should we balance the impact of such policies on individual lives and livelihoods (and other dimensions of concern) to determine which is best? A widely used method of policy evaluation, benefit–cost analysis (BCA), answers these questions by converting all the effects of a policy into monetary equivalents and then summing (...) them up. A different method, social welfare analysis, proceeds by determining the effects of a policy on individual wellbeing and then applying an aggregation formula to them to evaluate the overall effects of a policy. In this chapter, we survey these methods and argue that social welfare analysis has important advantages. One crucial advantage is that it enables ethical considerations relating to the impact of policies on individual wellbeing and its distribution to be incorporated into policy assessments in a transparent way. We illustrate this with a simple numerical model for evaluating pandemic policies that vary in terms of the stringency of the controls that they impose on individual behaviour, showing how the evaluation depends on the ethical significance accorded to their impact on the wellbeing of different age and income groups. (shrink)

Rémi Brague es un pensador francés reconocido por sus estudios de filosofía antigua y medieval. También ha analizado diversos aspectos de la antropología filosófica y cultural de nuestro tiempo, en un contexto amplio del estudio de la historia de las ideas. En la actualidad es profesor emérito de Filosofía Medieval en la Universidad de la Sorbona de París y de Historia del Cristianismo Europeo en la Ludwig-Maximilians-Universität München en Alemania donde ocupó la cátedra Romano Guardini. Es miembro del Instituto de (...) Francia desde 2009. (shrink)

The majority of The Legend of the Middle Ages: Philosophical Explorations of Medieval Christianity, Judaism, and Islam has been published previously in different forms, but this edition has been completely revised by the author, the well-known French medievalist and intellectual historian Rémi Brague. It was first published in French under the title Au moyen du Moyen Âge in 2006. The book consists of sixteen essays ranging from Brague’s early years at the Université Panthéon-Sorbonne (Paris I) in the 1990s up until (...) 2005. As a collection of articles, therefore, The Legend of the Middle Ages is not designed to be a monograph; one should not expect a single argument from the book, although it does explore key intersections of medieval religion and philosophy that I will touch upon later. (shrink)

In their article “Out of nowhere: thought insertion, ownership and context-integration”, Jean-Remy Martin & Elisabeth Pacherie criticize the standard approach to thought insertion. However, their criticism is based on a misunderstanding of what the standard approach actually claims. By clarifying the notions ‘sense of ownership’ and ‘sense of agency’, I show that Martin & Pacherie’s own approach can be construed as a refined version of the standard approach.

Remodel[l]ing Reality is an inquiry into Wittgenstein's notion of übersichtliche Darstellung and the phenomenon of installation in visual art. In a sense, both provide a perspicuous overview of a particular part of our complex world, but the nature of the overview differs. Although both generate knowledge, philosophy via the übersichtliche Darstellung gives us a view of how things stand for us, while the installation shows an unexpected, exiting point of view. The obvious we tend to forget and the ambiguity of (...) reality are related to each other in a dynamic way. It is in this reflexive dynamics that we constantly remodel our reality. Tools we use are our creative abilities and our powers of imagination. In our choices and solutions we show which aspects of reality we find important and how we communicate these values. The outcome of this investigation is a new perspective on the art of installation and a new insight in Wittgenstein's notion of übersichtliche Darstellung. Because of this combination, the book is itself an artwork: an InstallationPackage. The book is distributed by Ideabooks Amsterdam, Isbn 978 90 804240 3 6. Remodel[l]ing Reality is included in Special Collections, Allard Pierson Museum Amsterdam. (shrink)

Professeur Finkelstein avait posée la question, pourquoi, bien que leurs réalisations scientifiques et leur scientifique approche soient similaires, Bernard était beaucoup plus connu dans son pays, France, et à son époque, que Bois-Reymond en Allemagne? Une question similaire a été posée au sujet du pourquoi Darwin est connu pour la théorie de l'évolution, tandis que Wallace a été remis en arrière-fond dans leur temps et dans l'histoire. Selon Finkelstein, la cause de la differences entre Bois-Reymond et Bernard, peut être trouvée (...) dans la culture et la place de la science dans l'œil public en France contre les memes choses en Allemagne. C'est-à-dire, la rhétorique de la science a été plus respectée en France qu'en Allemagne, ce que Finkelstein a soutenu avec persuasion et éloquence. (shrink)