The Jesuit C.F. Milliet Dechales, author of one of the most famous early modern mathematical encyclopedias, Cursus seu mundus mathematicus, wrote a hundred-folio-page long treatise devoted to the “progress of mathematics,” which was published in the second, enlarged edition of his encyclopedia. His historical treatise covers the gamut of mixed mathematics—including astronomy, mechanics, optics, music, geography and navigation, ars tignaria, and architecture. The early modern historical narratives about the mathematical sciences, from Regiomontanus’s Oratio onwards, have been aptly characterized by their (...) literary form and goals rather than their historical content. Rhetoric, humanistic topoi, and philosophical filiation turned the histories of mathematics into powerful tools for different purposes. My account of Dechales’ tract on the “progress of mathematics” analyzes the ways in which it dovetails with Jesuit approaches to mathematics, provides legitimation to the mathematical sciences as well as to their authors, and contributes to define the role and boundaries of the discipline, in particular vis-à-vis natural philosophy. (shrink)

The concept of continuing professional development (CPD) for teachers combines issues of training, recognition, and professional effectiveness. In this article, we examine the conditions and effects of the implementation of CPD policies at the international and national levels, before looking comparatively at concrete CPD training provision in two “academies” in France. We seek to identify certain conditions for the renewal of in-service teacher training engineering devices and, more broadly, to document major contemporary issues for the teaching profession: attractiveness, recognition, renewal, (...) mobility, and professional development. (shrink)

Se busca aportar elementos conceptuales para una filosofía del consentimiento, al interrogar el privilegio que otorga Paul Ricoeur a la afirmación con respecto a las múltiples formas de negatividad inscritas en el ser humano y en sus acciones. Para ello, se propone un análisis del consentimiento próximo a Le volontaire et l'involontaire, en el que se tiene siempre en la mira la hermenéutica del sí-mismo y del homo capax, desarrolladas por Ricoeur desde 1990. Se defiende que el consentimiento va siempre (...) acompañado de la paciencia, y que ambos pueden y deben ser pensados como elementos estructurales que constituyen al sí-mismo. (shrink)

Previous studies suggest that small rural schools experience a range of challenges relating to their size, financial difficulties and geographical isolation, as well as potential opportunities relating to their position within their communities. In Northern Ireland, these schools are situated within the comparatively rare context of a religiously divided school system. However, research on these schools in this jurisdiction is scarce. The notion of consociationalism is highlighted as central to an understanding of the prevailing schooling system and the peace process (...) in Northern Ireland as a post-conflict society. Set against this backdrop, the paper reports on a survey of principals of small rural schools in Northern Ireland; the challenges they face and their engagement with the communities they serve. The findings reveal how these small rural primary schools, while encountering many similar challenges to such schools globally, continue to play a central consociational role in serving their respective divided communities. Their relationship with the Church is seen as particularly important. The findings raise important broader questions as to the extent to which the current system of schooling is able to contribute to the building of a more integrated society. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Isaac Barrow on the Mathematization of Nature: Theological Voluntarism and the Rise of Geometrical OpticsAntoni MaletIntroductionIsaac Newton’s Mathematical Principles of Natural Philosophy embodies a strong program of mathematization that departs both from the mechanical philosophy of Cartesian inspiration and from Boyle’s experimental philosophy. The roots of Newton’s mathematization of nature, this paper aims to demonstrate, are to be found in Isaac Barrow’s (1630–77) philosophy of the mathematical sciences.Barrow’s attitude (...) towards natural philosophy evolved from his earnest interest in medicine of around 1650, when a young Cambridge graduate, to natural philosophy (apparently under Henry More’s influence); from his thesis on the insufficiency of the Cartesian hypothesis to geometrical optics and the strong program of mathematization of natural philosophy of the middle 1660s; from Lucasian professor of Mathematics to Chaplain of his Majesty and eminent Restoration divine. Contemporary accounts of Barrow’s life suggest that he grew ever more skeptical about the worth of natural philosophy and mathematics. 1 In his last years he became a prolific [End Page 265] author of sermons and theological works. Published shortly after his death by John Tillotson (1630–94), later archbishop of Canterbury, they occupy over two thousand folio pages. Overloaded with involved philosophical arguments, Barrow’s sermons were apparently not very popular, but they were highly regarded by scholars and the Anglican hierarchy. 2 It is on certain of his sermons, as well as on the philosophical discussions contained in the Mathematical Lectures that our account of Barrow’s philosophy of the mathematical sciences will rest. 3 Barrow’s understanding of the mathematical sciences will allow us to discuss together three issues often analyzed independently: the theological background to English natural philosophy, the changing notion of mixed mathematical sciences during the seventeenth century, and finally the philosophical foundations of modern geometrical optics.It has long been recognized that significant relationships exist between theological voluntarism or intellectualism and views on natural philosophy. In particular Robert Boyle’s theological voluntarism is seen as grounding his experimentalist approach to natural philosophy. It is not quite so clear, however, how well theological voluntarism may relate to a strong program of mathematization such as the one embodied in Newton’s Principia Mathematica. In fact it has been suggested that the relationship is a negative one. This is derived from the necessary character of mathematical laws, which would put unwanted restrictions on God’s absolute dominion over nature, and also from the notion that theological intellectualism is conducive to a deductive, a priori science—the paradigm of which is of course geometry. However, Barrow’s theological voluntarism lead him to heighten the role of mathematics within natural philosophy.During the seventeenth century the so-called mixed or subalternate mathematical sciences changed profoundly. In the Enlightenment mixed mathematics—meaning above all rational mechanics—became one of the most prestigious and influential disciplines. The mixed mathematics of the Enlightenment, however, was markedly different from the Aristotelian [End Page 266] mixed mathematical sciences. The differences are noticeable both in the subject matter and in the substitution of mathematical infinitesimal analysis for geometrical synthesis, but also in the way of grounding mathematical theory on empirical evidence. Barrow’s Mathematical Lectures (delivered at Cambridge from 1664 to 1666) offer a fresh insight into the metamorphosis of these sciences just when Newton’s “mathematical principles” were in the making. Not the least interesting feature of Barrow’s discussion is that God’s omnipotence allows an evaluation of the truth of mathematical theories that do not apply to this world. Therefore, Barrow is led to introduce the distinction between the internal consistency, or mathematical truth, of a mathematical theory and its physical truth. This, in turn, leads him to the notion that theories need testing.Barrow on Matter and GodRecent literature has established significant correlations between theological voluntarism and empiricism, as well as between theological intellectualism and rationalism. As E. B. Davis writes, “the Christian doctrine of creation is a dialogue between God’s unconstrained will, which utterly transcends the bounds of human comprehension, and God’s orderly intellect, which serves as the model for the human mind.” Intellectualist theology considers God’s omniscience His... (shrink)

v. 1. Nominalism and realism.--v. 2. A theory of universals.

David Armstrong's book is a contribution to the philosophical discussion about possible worlds. Taking Wittgenstein's Tractatus as his point of departure, Professor Armstrong argues that nonactual possibilities and possible worlds are recombinations of actually existing elements, and as such are useful fictions. There is an extended criticism of the alternative-possible-worlds approach championed by the American philosopher David Lewis. This major work will be read with interest by a wide range of philosophers.

RESUMEN Este artículo reconstruye la genealogia arendtiana de las formas extremas de la violencia, tomando como hilo conductor los procesos de desingularización con un doble propósito: por un lado, analizar las (dis)continuidades históricas de dicha genealogia que trasciende la dimensión fisico-instrumental de la violencia y entra conexión con la (des)configuración de la identidad personal; por otro lado, reivindicar la vigencia de la obra de Hannah Arendt para explorar los ecos presentes de esa violencia, sin perder de vista su especificad actual. (...) ABSTRACT This paper reconstructs the Arendtian genealogy of the extreme forms of violence, taking desingularization processes as its guiding thread, with a twofold goal: on the one hand, to analyze the historical (dis)continuities of that genealogy, that goes beyond the physical-instrumental dimension of violence and comes into connection with the (de)configuration of personal identity; on the other hand, to claim the validity of Arendt's work to explore the echoes of that violence, without losing sight of its current specificity. (shrink)

El presente artículo busca interrogar al fenómeno de la apelación. Para ello, se examinará el vínculo entre fenomenología y apelación preguntándonos qué es preciso entender por la máxima husserliana que conmina a un retorno a las cosas mismas; en segundo lugar, intentaremos dilucidar cómo la obediencia crítica a la consigna fenomenológica ha supuesto una recomprensión de fenómeno al punto de transformar la consigna husserliana en un verdadero “retorno de las cosas mismas”. Finalmente, nos proponemos interrogar la apelación del fenómeno, a (...) partir del diálogo entre Marion y Romano. No solo intentaremos dilucidar cuál es la especificidad de la apelación, sino qué relación estricta hay entre fenómeno, particularmente insigne o saturado y apelación. (shrink)

“Probably Peirce’s best-known works are the first two articles in a series of six that originally were collectively entitled Illustrations of the Logic of Science and published in Popular Science Monthly from November 1877 through August 1878. The first is entitled ‘The Fixation of Belief’ and the second is entitled ‘How to Make Our Ideas Clear.’ In the first of these papers Peirce defended, in a manner consistent with not accepting naive realism, the superiority of the scientific method over other (...) methods of overcoming doubt and ‘fixing belief.’” — Robert Burch, “Charles Sanders Peirce,” entry in the Stanford Encyclopedia of Philosophy (2021 revision) -/- “Pragmatist epistemologies often explore how we can carry out inquiries in a self-controlled and fruitful way. (Where much analytic epistemology centres around the concept of knowledge, considered as an idealised end-point of human thought, pragmatist epistemology centres around the concept of inquiry, considered as the process of knowledge-seeking and how we can improve it.) So pragmatists often provide rich accounts of the capacities or virtues that we must possess in order to inquire well, and the rules or guiding principles that we should adopt. A canonical account is Peirce’s classic early paper ‘The Fixation of Belief‘. Here Peirce states that inquiry is a struggle to replace doubt with “settled belief“, and that the only method of inquiry that can make sense of the fact that at least some of us are disturbed by inconsistent beliefs, and will subsequently reflect upon which methods of fixing belief are correct is the Method of Science, which draws on the Pragmatic Maxim described above. This contrasts with three other methods of fixing belief: i) refusing to consider evidence contrary to one’s favored beliefs (the Method of Tenacity), ii) accepting an institution’s dictates (the Method of Authority), iii) developing the most rationally coherent or elegant-seeming belief-set (the A Priori Method).“ — Catherine Legg, “Pragmatism,” entry in the Stanford Encyclopedia of Philosophy (2021 revision). (shrink)

Se interroga la atencionalidad propia del amor en cuanto que experiencia privilegiada y primordial del cuidado. En busca de un acceso al fenómeno del amor, se propone interrogarlo conforme al tipo de atención que promueve, asumiendo y discutiendo los recursos aportados por la fenomenología husserliana, así como por las fenomenologías contraintencionales, en particular la de Waldenfels. De este modo, si para describir este fenómeno es preciso dar cuenta del fundamento afectivo de la atención, también hay que reconocer que el amor (...) es vivido como un hecho original o un acontecimiento que implica para el amante una reorientación existencial y atencional. (shrink)

RESUMEN Se interroga la atencionalidad propia del amor en cuanto que experiencia privilegiada y primordial del cuidado. En busca de un acceso al fenómeno del amor, se propone interrogarlo conforme al tipo de atención que promueve, asumiendo y discutiendo los recursos aportados por la fenomenología husserliana, así como por las fenomenologías contraintencionales, en particular la de Waldenfels. De este modo, si para describir este fenómeno es preciso dar cuenta del fundamento afectivo de la atención, también hay que reconocer que el (...) amor es vivido como un hecho original o un acontecimiento que implica para el amante una reorientación existencial y atencional. ABSTRACT The article inquires into the attentionality inherent to love as a privileged and primordial experience of care. Seeking access to the phenomenon of love, we suggest inquiring into it according to the type of attention it promotes, drawing on and discussing the resources provided by Husserlian phenomenology, as well as by counter-intentional phenomenologies, particularly Waldenfels'. Thus, while it is necessary to account for the affective grounds of attention in order to describe this phenomenon, it is also essential to recognize that love is experienced as an original fact or as an event that entails an existential and attentional reorientation of the lover. (shrink)

According to most accounts of trust, you can only trust other people (or groups of people). To trust is to think that another has goodwill, or something to that effect. I sketch a different form of trust: the unquestioning attitude. What it is to trust, in this sense, is to settle one’s mind about something, to stop questioning it. To trust is to rely on a resource while suspending deliberation over its reliability. Trust lowers the barrier of monitoring, challenging, checking, (...) and questioning. Trust sets up open pipelines between yourself and parts of the external world. Trust permits external resources to have a similar relationship to one as one’s internal cognitive faculties. This creates efficiency, but at the price of exquisite vulnerability. We must trust in this way because we are cognitively limited beings in a cognitively overwhelming world. Crucially, we can hold the unquestioning attitude towards objects and technologies. When I trust my climbing rope, I stop worrying about its reliability. When I trust my online calendaring system, I simply go to the events indicated, without question. But, one might worry, how could one ever hold such a normatively loaded attitude as trust towards mere objects? How could it ever make sense to feel betrayed by an object? Trust is our engine for expanding and outsourcing our agency — for binding external processes into our practical selves. Thus, we can be betrayed by our smartphones in the same way that we can be betrayed by our memory. When we trust, we try to make something a part of our agency, and we are betrayed when our part lets us down. To unquestioningly trust something is to let it in—to attempt to bring it inside one’s practical functioning. This suggests a new form of gullibility: agential gullibility, which occurs when agents too hastily and carelessly integrate external resources into their own agency. (shrink)

Value capture occurs when an agent’s values are rich and subtle; they enter a social environment that presents simplified — typically quantified — versions of those values; and those simplified articulations come to dominate their practical reasoning. Examples include becoming motivated by FitBit’s step counts, Twitter Likes and Re-tweets, citation rates, ranked lists of best schools, and Grade Point Averages. We are vulnerable to value capture because of the competitive advantage that such crisp and clear expressions of value have in (...) our private reasoning and our public justification. There is, however, a price. In value capture, we take a central component of our autonomy — our ongoing deliberation over the exact articulation of our values — and we outsource it. And the metrics to which we outsource usually engineered for the interests of some external force, like a large-scale institution’s interest in cross-contextual comprehensibility and quick aggregability. That outsourcing cuts off one of the key benefits to personal deliberation. In value capture, we no longer adjust our values and their articulations in light of own rich experience of the world. Our values should often be carefully tailored to our particular selves or our small-scale communities, but in value capture, we buy our values off the rack. In some cases – like decreasing CO2 emissions – the costs of non-tailored values are outweighed by the benefit of precise collective coordination. In other cases, like in our aesthetic lives, they are not. This suggests that we should want different values suited to different scales. We should want value federalism. Some values are perhaps best pursued at the largest-scale level, others at smaller scales. The problem occurs when we exhibit an excess preference for the largest-scale values – when we consistently let the universal metrics swamp our quieter interests. (shrink)

El presente artículo busca interrogar el atender en su doble acepción, en tanto atención perceptiva y en tanto cuidado. Lo que parece interesante del examen del vínculo entre ambos sentidos es que pone en juego un sujeto que se comprende en relación estricta con la alteridad cuyo modo de ser está determinado por sus respuestas. En este sentido, el examen progresivo que va de la atención perceptiva a la atención en cuanto cuidado aporta recursos importantes para pensar la dimensión responsiva (...) del sí-mismo al alero de los aportes de la fenomenología contemporánea que va de Ricoeur, pasando por Levinas, Marion, Chrétien, Housset y Romano. This paper tries to interrogate the verb "to attend" in its double acceptation, as perceptive attention and as care. What seems interesting in the study of the link between both meanings is that it puts into play a subject who understands himself or herself in strict relationship with an otherness whose way of being is determined by his or her answers. In this sense, the progressive examination that goes from perceptive attention to attention as care brings important resources to think the responsive dimension of the self under the auspices of contemporary phenomenology: Ricoeur, but also Levinas, Marion, Chrétien, Housset and Romano. (shrink)

Este artículo se propone interrogar la relación entre sufrimiento y atención desde una perspectiva fenomenológica. A partir de este análisis intentaremos clarificar el fenómeno del sufrimiento mismo. Un fenómeno singular que ocurre de acuerdo a una saturación particular como un acontecimiento personal y dramático, y que puede ser experienciado en tanto que se impone irreversible e irrevocable. Así, cada una de estas notas constitutivas del sufrimiento revelarán la transformación y transmutación que este producen despliegue de nuestra atención, afectando la propia (...) relación con nosotros mismos, con los otros y con el mundo. Este camino interrogativo toma su impulso desde las caracterizaciones ricoeurianas del sufrimiento, entendido por el filósofo francés como la forma más vivas de consciencia de sí. (shrink)

RESUMEN El artículo examina el consuelo como una cuestión filosófica en cuanto que concreción de la solicitud, y muestra los recursos que aporta para comprender al ser humano como sujeto sufriente y respondiente. Se analiza el consuelo en cuanto que fenómeno de acceso a otras dimensiones constitutivas del ser humano, como la afectividad, la apelación y el cuidado. ABSTRACT The article examines consolation as a philosophical issue insofar as it is a materialization of attentiveness, and explains the resources it offers (...) to understand human beings as suffering and caring subjects. It analyzes consolation as a phenomenon that provides access to other constitutive dimensions of the human being, such as affectivity, appeal, and care. (shrink)

El artículo examina el consuelo como una cuestión filosófica en cuanto que con-creción de la solicitud, y muestra los recursos que aporta para comprender al ser humano como sujeto sufriente y respondiente. Se analiza el consuelo en cuanto que fenómeno de acceso a otras dimensiones constitutivas del ser humano, como la afec-tividad, la apelación y el cuidado.

RESUMEN En el siguiente texto se intentará dilucidar si acaso es posible hacer la experiencia de las cosas en su momento no temático ni objetivo con los recursos que aporta la nueva fenomenología, en particular, los propios de las obras de Marion y Maldiney. Con este fin, se interrogará la fenomenalidad propia de los objetos, para luego avanzar hacia el examen de dos experiencias privilegiadas buscando dilucidar lo que significa e implica hacer el encuentro de las cosas a-temáticamente, esto es: (...) la mirada estética y la experiencia de la sorpresa. ABSTRACT The following paper will attempt to elucídate if it is possible to make the experience of things neither in its thematics nor objective perceptual moment, through the use of some resources provided by the new phenomenology, in particular, those that are found in Marion's and Maldiney's philosophical works. To achieve this, on the one hand, we will investigate the proper phenomenality of objects, on the other, we will research two privileged experiences to understand what it means and implies to make an a-thematical encounter of things, namely: the aesthetics view and the experience of surprise. (shrink)

En el siguiente texto se intentará dilucidar si acaso es posible hacer la experiencia de las cosas en su momento no temático ni objetivo con los recursos que aporta la nuevafenomenología, en particular, los propios de las obras de Marion y Maldiney. Con este fin, se interrogará la fenomenalidad propia de los objetos, para luego avanzar hacia el examen de dos experiencias privilegiadas buscando dilucidar lo que significa e implica hacer el encuentro de las cosas a-temáticamente, esto es: la mirada (...) estética y la experiencia de la sorpresa. (shrink)

RESUMEN Este artículo reconstruye la genealogia arendtiana de las formas extremas de la violencia, tomando como hilo conductor los procesos de desingularización con un doble propósito: por un lado, analizar las (dis)continuidades históricas de dicha genealogia que trasciende la dimensión fisico-instrumental de la violencia y entra conexión con la (des)configuración de la identidad personal; por otro lado, reivindicar la vigencia de la obra de Hannah Arendt para explorar los ecos presentes de esa violencia, sin perder de vista su especificad actual. (...) ABSTRACT This paper reconstructs the Arendtian genealogy of the extreme forms of violence, taking desingularization processes as its guiding thread, with a twofold goal: on the one hand, to analyze the historical (dis)continuities of that genealogy, that goes beyond the physical-instrumental dimension of violence and comes into connection with the (de)configuration of personal identity; on the other hand, to claim the validity of Arendt's work to explore the echoes of that violence, without losing sight of its current specificity. (shrink)

Se busca aportar elementos conceptuales para una filosofía del consentimiento, al interrogar el privilegio que otorga Paul Ricoeur a la afirmación con respecto a las múltiples formas de negatividad inscritas en el ser humano y en sus acciones. Para ello, se propone un análisis del consentimiento próximo a Le volontaire et l'involontaire, en el que se tiene siempre en la mira la hermenéutica del sí-mismo y del homo capax, desarrolladas por Ricoeur desde 1990. Se defiende que el consentimiento va siempre (...) acompañado de la paciencia, y que ambos pueden y deben ser pensados como elementos estructurales que constituyen al sí-mismo. (shrink)

El siguiente artículo interroga dos concepciones que Ricoeur desarrolla sobre la vida en dos momentos distintos de su obra: el primero corresponde a una filosofía de la voluntad desarrollado a lo largo de una década (1950-1960), y el segundo a una hermenéutica de los textos que elabora particularmente a partir de su trilogía Temps et récit. Nuestra tesis de lectura consiste en afirmar que los discursos que Ricoeur ha elaborado sobre la vida, tanto fenomenológico como hermenéutico, están marcados por el (...) predominio de la afirmación, de la potencia del sí que se sobrepone a las diversas figuras de la negatividad, cobrando sentido el título de su obra póstuma Vivo hasta la muerte. Consentir y narrar son dos modos de afirmar a pesar de su opacidad y negatividad. The following article examines two manner of understandings life that Ricoeur develops in two different moments of his work: the first moment corresponds to a philosophy of the will developed during the decade of the 50th and the second corresponds to a hermeneutics of the texts that Ricoeur develops particularly in his trilogy Temps et récit. My thesis is that the different discourses that Ricoeur has elaborated about life, phenomenological and hermeneutical, are marked by the idea of affirmation, that is, by the potency of a self that overcomes the different figures of negativity. Then, we can make sense of the title of Ricoeur posthumous work Living Up to Death. Consent and narrate are two ways to affirm despite its opacity and negativity. (shrink)

El siguiente ensayo busca tematizar los alcances y posibilidades de una fenomenología hermenéutica del testigo en la obra de Paul Ricoeur. Dos objetivos dan cuerpo a este intento: 1) situar el lugar del testigo en el marco de la fenomenología contemporánea, particularmente, de Husserl, Sartre y Lévinas; 2) preguntarse por la condición pasible del testigo, condición que a mí juicio hace de éste un respondiente, inscribiendo la obra ricoeuriana, con todas las cautelas correspondientes, que deben ser muchas, al inicio de (...) lo que puedo llamar el avance de diversos intentos de conducir una fenomenología de la responsividad (Jean-Louis Chrétien, Emmanuel Housset, Claude Romano), siendo cada uno de ellos, en todo caso, tan singular y original que habría que probar si son o no coincidentes. En este sentido, este ensayo es un prolegómeno a otro futuro que tendría por tarea tomar en serio a cada uno de estos fenomenólogos franceses. (shrink)

Se busca aportar elementos conceptuales para una filosofía del consentimiento, al interrogar el privilegio que otorga Paul Ricoeur a la afirmación con respecto a las múltiples formas de negatividad inscritas en el ser humano y en sus acciones. Para ello, se propone un análisis del consentimiento próximo a Le volontaire et l'involontaire, en el que se tiene siempre en la mira la hermenéutica del sí-mismo y del homo capax, desarrolladas por Ricoeur desde 1990. Se defiende que el consentimiento va siempre (...) acompañado de la paciencia, y que ambos pueden y deben ser pensados como elementos estructurales que constituyen al sí-mismo. By inquiring into the privilege granted by Paul Ricoeur to affirmation with respect to the multiple forms of negativity inscribed in human beings and their actions, the article seeks to contribute conceptual elements for a philosophy of consent. To this effect, it proposes an analysis of consent along the lines of Le volontaire et l'involontaire, bearing in mind the hermeneutics of self and of homo capax, developed by Ricoeur since 1990. The paper argues that consent goes hand in hand with patience, and that both can and should be thought as structural elements that constitute the oneself. Neste artigo, procura-se contribuir elementos conceituais para uma filosofia do consentimento, ao interrogar o privilégio que outorga Paul Ricoeur à afirmação a respeito das múltiplas formas de negatividade inscritas no ser humano e em suas ações. Para isso, propõe-se uma análise do consentimento próximo a Le volontaire et l'involontaire, no qual se tem sempre no alvo a hermenêutica do si-mesmo e do homo capax, desenvolvidas por Ricoeur desde 1990. Defende-se que o consentimento vai sempre acompanhado da paciência e que ambos podem e devem ser pensados como elementos estruturais que constituem o si-mesmo. (shrink)

Two distinguished philosophers present opposing views on the questions of howthe objects of consciousness are perceived. (Philosophy).

This paper deals with Hobbes's theory of optical images, developed in his optical magnum opus, ‘A Minute or First Draught of the Optiques’, and published in abridged version in De homine. The paper suggests that Hobbes's theory of vision and images serves him to ground his philosophy of man on his philosophy of body. Furthermore, since this part of Hobbes's work on optics is the most thoroughly geometrical, it reveals a good deal about the role of mathematics in Hobbes's philosophy. (...) The paper points to some difficulties in the thesis of Shapin and Schaffer, who presented geometry as a ‘paradigm’ for Hobbes's natural philosophy. It will be argued here that Hobbes's application of geometry to optics was dictated by his metaphysical and epistemological principles, not by a blind belief in the power of geometry. Geometry supported causal explanation, and assisted reason in making sense of appearances by helping the philosopher understand the relationships between the world outside us and the images it produces in us. Finally the paper broadly suggests how Hobbes's theory of images may have triggered, by negative example, the flourishing of geometrical optics in Restoration England. (shrink)

Recent conversation has blurred two very different social epistemic phenomena: echo chambers and epistemic bubbles. Members of epistemic bubbles merely lack exposure to relevant information and arguments. Members of echo chambers, on the other hand, have been brought to systematically distrust all outside sources. In epistemic bubbles, other voices are not heard; in echo chambers, other voices are actively undermined. It is crucial to keep these phenomena distinct. First, echo chambers can explain the post-truth phenomena in a way that epistemic (...) bubbles cannot. Second, each type of structure requires a distinct intervention. Mere exposure to evidence can shatter an epistemic bubble, but may actually reinforce an echo chamber. Finally, echo chambers are much harder to escape. Once in their grip, an agent may act with epistemic virtue, but social context will pervert those actions. Escape from an echo chamber may require a radical rebooting of one's belief system. (shrink)

Introduction (version française) à ERRS 2018, 9, 2, “Affectivité, initiative, fragilité et vulnérabilité dans l’anthropologie philosophique de Ricœur”.

Introduction (english version) of ERRS, 2018, 9, 2, “Affectivity, Initiative, Fragility and Vulnerability in Ricœur’s Philosophical Anthropology”.

Il s’agit dans cet article de montrer que l’éthique ricoeurienne exposée dans Soi-même comme un autre peut et doit être pensée par rapport à l’anthropologie et l’ontologie que le philosophe a progressivement développées depuis son premier grand projet philosophique phénoménologique jusqu’à son œuvre de maturité. Dans le but d’esquisser cette approche des fondements onto-anthropologiques de l’éthique ricœurienne, nous partons d’abord des textes de jeunesse de Ricœur dans lesquels il développe une longue méditation sur le risque qu’implique l’acte de la liberté: (...) risque d’être soi-même, de décider et d’agir sur le monde avec et pour les autres. Puis, notre analyse s’intéresse à la conception ricœurienne du consentement et de l’affectivité afin de voir dans quelle mesure elle est susceptible d’éclairer le développement de l’éthique et de la notion de sujet éthique dans le cadre de la phénoménologie herméneutique de Ricœur. L’article conduit ainsi une analyse de la question du “je peux” et du “je veux” dans Le volontaire et l’involontaire, en passant par L’homme faillible pour déboucher enfin sur un examen de “l’homme agissant et souffrant” dans Soi-même comme un autre. (shrink)

There is an uncanny unanimity about the founding role of Kepler's Dioptrice in the theory of optical instruments and for classical geometric optics generally. It has been argued, however, that for more than fifty years optical theory in general, and Dioptrice in particular, was irrelevant for the purposes of telescope making. This article explores the nature of Kepler's achievement in his Dioptrice . It aims to understand the Keplerian 'theory' of the telescope in its own terms, and particularly its links (...) to Kepler's theory of vision. It deals first with Kepler's way to circumvent his ignorance of the law of refraction, before turning to Kepler's explanations of why lenses magnify and invert vision. Next, it analyses Kepler's account of the properties of telescopes and his suggestions to improve their designs. The uses of experiments in Dioptrice , as well as the explicit and implicit references to della Porta's work that it contains, are also elucidated. Finally, it clarifies the status of Kepler's Dioptrice vis-à-vis , classical geometrical optics and presents evidence about its influence in treatises about the practice of telescope making during roughly the first two-thirds of the seventeenth century. (shrink)