Silence is reserved for what cannot be verbally expressed. The well-known Wittgensteinian quote summarizes an established understanding of the relationship between language and silence: because language is not enough to account for reality and thinking, it must be transcended by other means of expression, like music or silence. But what if the opposite is the case and silence is not the extension but the precondition of language, the ultimate source of meaning? This paper explores how this is the phenomenological and (...) Derridean philosophical framework of Coetzee’s novels, a literary universe created from the will to signify and build singular meanings. (shrink)

Recopilació dels textos de les reflexions que van tenir lloc en l'encontre inter nacional "Noves fronteres de la ciència, l'art i el pensament. Física de l'estèt ica", celebrat els dies 6 i 7 de setembre de 2005 a l'Auditori Caixa Catalunya-l a Pedrera de Barcelona. En la trobada es plantejaren preguntes universals relati ves als límits de la nostra percepció, al disseny de la matèria o a la narrativa de la complexitat circumdant. Va comptar amb la col·laboración de personalitats d'àmbits (...) no científics que, des de la seva perspectiva, contribuiren a destil·l ar l'estètica emanada de les tendències contemporànies d'aquesta disciplina cien tífica. (shrink)

Einstein's gravitational redshift derivation in his famous 1916 paper on general relativity seems to be problematic, being mired in what looks like conceptual difficulties or at least contradictions or gaps in his exposition. Was this derivation a blunder? To answer this question, we will consider Einstein’s redshift derivations from his first one in 1907 to the 1921 derivation made in his Princeton lectures on relativity. This will enable to see the unfolding of an interdependent network of concepts and heuristic derivations (...) in which previous ideas inform and condition later developments. The resulting derivations and views on coordinates and clocks are in fact not without inconsistencies. However, we can see these difficulties as an aspect of an evolving network understood as a “work in progress”. (shrink)

The purpose of this work is to address what notion of geometrical object and geometrical figure we have in different kinds of geometry: practical, pure, and applied. Also, we address the relation between geometrical objects and figures when this is possible, which is the case of pure and applied geometry. In practical geometry it turns out that there is no conception of geometrical object.

A re-evaluation of the notion of vacuum in quantum electrodynamics is presented, focusing on the vacuum of the quantized electromagnetic field. In contrast to the ‘nothingness’ associated to the idea of classical vacuum, subtle aspects are found in relation to the vacuum of the quantized electromagnetic field both at theoretical and experimental levels. These are not the usually called vacuum effects. The view defended here is that the so-called vacuum effects are not due to the ground state of the quantized (...) electromagnetic field. Nevertheless it is possible to maintain an empirically demonstrable notion of vacuum state that is consistent with the interpretation of the formalism of the theory. (shrink)

The cognitive basis of geometry is still poorly understood, even the ‘simpler’ issue of what kind of representation of geometric objects we have. In this work, we set forward a tentative model of the neural representation of geometric objects for the case of the pure geometry of Euclid. To arrive at a coherent model, we found it necessary to consider earlier forms of geometry. We start by developing models of the neural representation of the geometric figures of ancient Greek practical (...) geometry. Then, we propose a related model for the earliest form of pure geometry – that of Hippocrates of Chios. Finally, we develop the model of the neural representation of the geometric objects of Euclidean geometry. The models are based on the hub-and-spoke theory. In our view, the existence of specific models opens the possibility of addressing the relationship between geometric figures and geometric objects, in a novel way, in terms of their neural representation. (shrink)

Philosophy of Physics has emerged recently as a scholarly important subfield of philosophy of science. However outside the small community of experts it is not a well-known field. It is not clear even to experts the exact nature of the field: how much philosophical is it? What is its relation to physics? In this work it is presented an overview of philosophy of physics that tries to answer these and other questions.

It has been argued in relation to Old Babylonian mathematical procedure texts that their validity or correctness is self-evident. One “sees” that the procedure is correct without it having, or being accompanied by, any explicit arguments for the correctness of the procedure. Even when agreeing with this view, one might still ask about how is the correctness of a procedure articulated? In this work, we present an articulation of the correctness of ancient Egyptian and Old Babylonian mathematical procedure texts – (...) mathematical texts presenting the solution of problems. We endeavor to make explicit and explain how and why the procedures are reliable over and above the fact that their correctness is intuitive. (shrink)

Higher education institutions worldwide have begun to embrace sustainability issues and engage their campuses and communities in such efforts, which have led to the development of integrity and ethical values in these organizations and their relationships with stakeholders. This study provides a literary review of the concept of University Social Responsibility (USR) and sustainability programs worldwide, grouped into eight research streams: conceptual framework, strategic planning and USR, educating on USR, spreading USR, reporting and USR, evaluation of USR, barriers and accelerators (...) and case studies. The aforementioned research streams served as a context to explore best practices in sustainability on a global basis. (shrink)

Despite being increasingly available to us all, retirement pensions remain unequally distributed: between rich and poor, young and old, men and women, and possibly different generations. As this topic receives little attention in moral and political philosophy, the articles in this thesis aim to deliver an original account of justice in retirement pensions along liberal egalitarian lines. The first part defends retirement pensions as a distribution of free time. It shows that including free time in the list of goods that (...) liberal egalitarians prioritise is plausible and avoids problems that would otherwise arise with other candidates, most notably leisure. Retirement as free time is an essential feature of liberal egalitarian societies by (re)distributing the means to pursue any life project, and especially valuable for the poor who work and contribute the longest. The second part makes a case for 'libertirement', a proposal to increase the freedom to enjoy free time across life, as a matter of justice between those who live long and those who die early. Specifically, I propose adding reverse pensions and sabbaticals on top of old-age retirement. Besides showing the importance of longevity for age-group justice, I also draw implications for distributing unconditional basic income and income taxes across life, which I suggest may offer alternative paths to libertirement. Finally, the third part discusses the cases of pension inequality between genders and generations, pushing us to refine our account further. I conclude that there is often a mismatch between liberal egalitarian justice and the design of retirement schemes. The solution is often but not always to reform these systems. Sometimes, we have reasons to revise our very own principles of justice. (shrink)

In this paper, we will make explicit the relationship that exists between geometric objects and geometric figures in planar Euclidean geometry. That will enable us to determine basic features regarding the role of geometric figures and diagrams when used in the context of pure and applied planar Euclidean geometry, arising due to this relationship. By taking into account pure geometry, as developed in Euclid’s Elements, and practical geometry, we will establish a relation between geometric objects and figures. Geometric objects are (...) defined in terms of idealizations of the corresponding figures of practical geometry. We name the relationship between them as a relation of idealization. This relation, existing between objects and figures, is what enables figures to have a role in pure and applied geometry. That is, we can use a figure or diagram as a representation of geometric objects or composite geometric objects because the relation of idealization corresponds to a resemblance-like relationship between objects and figures. Moving beyond pure geometry, we will defend that there are two other ‘layers’ of representation at play in applied geometry. To show that, we will consider Euclid’s Optics. (shrink)

The question of how society should deal with social conflicts arising from cultural differences persists. Should we adopt an exclusivist approach by excluding reasons based on specific cultural traditions (culture-based reasons) from public debates about social policy, especially because these reasons do not appeal to the public at large? Or should we resort to an inclusivist approach by including reasons based on cultural traditions in public debate to give recognition to the diverse cultural identities of those who practice these traditions? (...) While these two approaches assign different roles to cultural traditions in public debate, both seem to welcome compromise between conflicting parties. This paper reviews contending normative approaches for dealing with conflicts in multicultural societies and explores the place of culture-based reasons in public debates designed to resolve conflicts. (shrink)

While Einstein considered that sub specie astern the correct philosophical position regarding geometry was that of the conventionality of geometry, he felt that provisionally it was necessary to adopt a non-conventional stance that he called practical geometry. here we will make the case that even when adopting Einstein’s views we must conclude that practical geometry is conventional after all. Einstein missed the fact that the conventionality of simultaneity leads to a conventional element in the chrono-geometry, since it corresponds to the (...) possibility of different space-time metrics. (shrink)

We present an approach in which ancient Greek mathematical proofs by Hippocrates of Chios and Euclid are addressed as a form of (guided) intentional reasoning. Schematically, in a proof, we start with a sentence that works as a premise; this sentence is followed by another, the conclusion of what we might take to be an inferential step. That goes on until the last conclusion is reached. Guided by the text, we go through small inferential steps; in each one, we go (...) through an autonomous reasoning process linking the premise to the conclusion. The reasoning process is accompanied by a metareasoning process. Metareasoning gives rise to a feeling-knowing of correctness. In each step/cycle of the proof, we have a feeling-knowing of correctness. Overall, we reach a feeling of correctness for the whole proof. We suggest that this approach allows us to address the issues of how a proof functions, for us, as an enabler to ascertain the correctness of its argument and how we ascertain this correctness. (shrink)

A perverted space-time geodesy results from the idea of variable rods and clocks, whose length and rates are taken to be affected by the gravitational field. By contrast, what we might call a concrete geodesy relies on the idea of invariable unit-measuring rods and clocks. Indeed, this is a basic assumption of general relativity. Variable rods and clocks lead to a perverted geodesy, in the sense that a curved space-time may be seen as a result of a departure from the (...) Minkowskian space-time as an effect of the gravitational field on the rate of clocks and the length of rods. In the case of a concrete geodesy, we have a curved space-time “directly”, the curvature of which can be determined using (invariable) unit-measuring rods and clocks. In this paper, we will make the case for the plausibility of the claim that Einstein’s views on geometry in relation to general relativity are permeated by a perverted geodesy. (shrink)

Archimedes’ statics is considered as an example of ancient Greek applied mathematics; it is even seen as the beginning of mechanics. Wilbur Knorr made the case regarding this work, as other works by him or other mathematicians from ancient Greece, that it lacks references to the physical phenomena it is supposed to address. According to Knorr, this is understandable if we consider the propositions of the treatise in terms of purely mathematical elaborations suggested by quantitative aspects of the phenomena. In (...) this paper, we challenge Knorr’s view, and address propositions of Archimedes’ statics in their relation to physical phenomena. (shrink)

Une géodésie spatio-temporelle pervertie résulte des notions de règles et d’horloges variables, qui sont prises pour avoir leur longueur et leur rythme affectés par le champ gravitationnel. D’autre part ce que nous pourrions appeler une géodésie concrète repose sur les notions de règles et d’horloges invariables de mesure d’unité. En fait, il s’agit d’une hypothèse de base de la relativité générale. Les règles et les horloges variables conduisent à une géodésie pervertie dans le sens où un espace-temps courbe pourrait être (...) vu comme provenant du départ de l’espace-temps Minkowskien comme un effet du champ gravitationnel sur le rythme d’horloges et la longueur des règles. Dans le cas d’une géodésie concrète, nous avons « directement » un espace-temps courbe dont la courbure peut être déterminée en utilisant des règles et des horloges de mesure d’unité (invariables). Dans cet article, nous défendrons la plausibilité que le point de vue d’Einstein sur la géométrie par rapport à la relativité générale est imprégné par une géodésie pervertie. (shrink)

El Anti-Excepcionalismo Lógico afirma que la Lógica es como cualquier otra ciencia. Si esta afirmación es cierta, entonces ella no sólo es revisable, sino que además todo lo que se puede decir sobre las ciencias aplica, mutatis mutandis, para la misma. El propósito de este artículo es explorar esta consecuencia del Anti-Excepcionalismo Lógico, acercando a la Filosofía de la Lógica el marco teórico de las Máquinas Nomológicas de Nancy Cartwright. De acuerdo con esta visión, lo que hay de verdadero en (...) las teorías científicas no está en el mundo sino en sus modelos: sistemas altamente controlados, estables, artificiales y específicos, dentro de los cuales se manifiestan regularidades sistematizables y enseñables. Mi afirmación es que lo mismo puede decirse de la Lógica: ella no captura las Leyes del Pensamiento o de la Razón, porque el pensamiento y la razón no están gobernados necesariamente por leyes. Sobre lo que sí puede decirse que versan las Leyes de la Lógica son metafísicas posibles: historias acerca de qué son las proposiciones, el pensamiento, la verdad y la validez. A fin de ilustrar y defender esta tesis, presento un ejemplo de Máquina Nomológica de la Lógica Clásica, basada en una lectura original del Tractatus de Wittgenstein, e investigo algunas de sus consecuencias. Mi conclusión es que esta imagen de la Lógica impacta en el problema de la revisión de la Lógica Clásica, en la medida en que muestra que dicha revisión no necesariamente responde a un proceso racional de adecuación de la teoría a los hechos porque los “hechos” relevantes no son anteriores a la teoría misma, sino que están moldeados y conducidos por ella. Palabras clave: Anti-Excepcionalismo Lógico, Abductivismo, Máquinas Nomológicas, Revisión Lógica, Filosofía de la Lógica. (shrink)

Scholars have long maintained that Machiavelli's "The Prince" does not develop a single sustained argument but rather presents a set of disparate reflections; however, de Alvarez takes a different view. In "The Machiavellian Enterprise", he demonstrates that there is an internal consistency in "The Prince" built upon a key argument that has been previously overlooked. De Alvarez presents his bold and sophisticated argument in an accessible manner and incites debates and discussions that reshape the view of the western tradition's most (...) original political philosopher. (shrink)

The negative impacts of agriculture on the environment and the inequity that limits access to healthy food for the entire population impede sustainable development. This article reflects contributions to food security and alternatives for transitioning to sustainable food systems. It is concluded that food, as a human right, is a complex and transdisciplinary issue, which must be integrated as a transversal axis in the economic, social, environmental, governance, and cultural dimensions to contribute to sustainable development and therefore the convenience of (...) making the transition from the concept of food security to that of food sustainability. (shrink)

Universal basic income proposes providing instalments of constant magnitude to all. One problem with a stable basic income across life is that it seems unfair to shorter-lived persons, who are worst-off due to premature death and receive less over their whole lives. Basic capital solves this problem by providing a one-off grant to the young, but I argue that it mistreats long-lived persons, as it does not guarantee their real freedom across life. There is a dilemma between these proposals regarding (...) their respective unfairness to the short- and long-lived. The solution I propose is a net basic income of decreasing magnitude until a specific age, after which the income is constant. This solution is compatible with constant income benefits across life, and it offers a fair answer to the problem of unequal longevity, a widely neglected but essential challenge in debates about basic income. (shrink)

in this paper we return to Marshall Clagett’s view about the existence of an ancient Greek geometry of motion. It can be read in two ways. As a basic presentation of ancient Greek geometry of motion, followed by some aspects of its further development in landmark works by Galileo and Newton. Conversely, it can be read as a basic presentation of aspects of Galileo’s and Newton’s mathematics that can be considered as developments of a geometry of motion that was first (...) conceived by ancient Greek mathematicians. (shrink)

The purpose of this work is to address the relation existing between ancient Greek practical geometry and ancient Greek pure geometry. In the first part of the work, we will consider practical and pure geometry and how pure geometry can be seen, in some respects, as arising from an idealization of practical geometry. From an analysis of relevant extant texts, we will make explicit the idealizations at play in pure geometry in relation to practical geometry, some of which are basically (...) explicit in definitions, like that of segments in Euclid’s Elements. Then, we will address how in pure geometry we, so to speak, “refer back” to practical geometry. This occurs in two ways. One, in the propositions of pure geometry. The other, when applying pure geometry. In this case, geometrical objects can represent practical figures like, e.g., a practical segment. (shrink)

What kind of thing is a reason for action? What is it to act for a reason? And what is the connection between acting for a reason and rationality? There is controversy about the many issues raised by these questions. In this paper I shall answer the first question with a conception of practical reasons that I call ‘Factualism’, which says that all reasons are facts. I defend this conception against its main rival, Psychologism, which says that practical reasons are (...) mental states or mental facts, and also against a variant of Factualism that says that some practical reasons are facts and others are false beliefs. I argue that the conception of practical reasons defended here provides plausible answers to the second and third questions above; and gives a more unified and satisfactory picture of practical reasons than those offered by its rivals. (shrink)

Las células madre embrionarias humanas son células pluripotentes con potenciales aplicaciones en medicina regenerativa e interés considerable en investigación y biotecnología. Sin embargo, dada la estrecha relación con principios morales y bioéticos, ha existido una considerable discusión sobre la posibilidad de patentar o no este tipo de células madre. En el presente artículo, se revisa la legislación europea en materia de propiedad industrial, y la tradición del sistema jurídico continental en el reconocimiento de la dignidad humana como principio fundamental y (...) su relación con la protección de invenciones biotecnológicas, centrados en la reciente sentencia del caso Brüstle v. Greenpeace e.V. (shrink)

Durante las cuatro últimas décadas, Javier Muguerza ha contribuido como nadie a la modernización del pensamiento español, dando a conocer y comentando lo mejor que se publicaba en otras lenguas, particularmente a lo tocante a la filosofía analítica, a la teoría crítica y a las corrientes morales y políticas anglosajonas y alemanas, además de tener muy en cuenta todo lo que se escribía en español y prestar una especial atención al espíritu del pensamiento práctico kantiano. La deuda que con él (...) tiene contraída la filosofía en castellano es muy difícil de calcular. En el libro Disenso e incertidumbre. Un homenaje a Javier Muguerza, un grupo de importantes filósofos analiza su obra en profundidad ofreciendo al lector la oportunidad única de conocerla desde múltiples puntos de vista. (shrink)

RESUMEN El trabajo tiene como objetivo revelar la contribución social de médicos camagüeyanos negros a la educación católica, a partir de su relación con los colegios regentados por la Iglesia, en un contexto marcado por desigualdades raciales. Se utilizaron métodos teóricos como la revisión documental y bibliográfica, también fueron aplicadas historias de vida y entrevistas. La investigación se centra en el quehacer asistencial de médicos camagüeyanos, vinculados a las Hermanas Oblatas de la Providencia, en particular a los colegios a cargo (...) de estas monjas negras, que educaban a niñas y niños de ese color de piel. Se pudo esclarecer quiénes fueron los doctores más vinculados a esas instituciones y establecer cuál fue su labor en ellas en las décadas del 40- 50 del siglo XX. Queda valorada su contribución social en la asistencia brindada a ese segmento poblacional y al significado de esta sin la mediación de prejuicios raciales. ABSTRACT The purpose of this paper is reveal the social contribution of black Camagüey doctors to the Catholic education from it relation with the schools occupied by the church in a context marked by racials ineguality. It put in practical use theoric methods such as documentary an bibliographical revisión; it also were aplyed life history and entreviews. The research it focus in the assistance job of the Camaguey doctor linked to the Sisters Providence Oblates, especially the schools of these black nuns who give education to black girls and boys. The paper show who were the doctors most linked to these religious institution and to situate their Jobs in these schools in the ´40 and ´50 of the 20 th century. Their social contribution is valved in this type of population and the meaning of this contribution with out racial prejudice. (shrink)

This paper addresses the role of analogical reasoning in archaeoastronomy - the discipline which studies the connections between the ancient monuments and the heavens. Archaeoastronomy is a highly interdisciplinary science, placed at the border between the humanities – especially archaeology – and the scientific approach to cultural heritage. As a consequence, its scientific foundations are a delicate matter. We plan to investigate here the question of what constitutes the evidence for analogical inferences in archaeoastronomy and to what extent one can (...) achieve confirmation of archaeoastronomical hypotheses by means of such analogies. Our claim will be that, when deployed in accordance with the methodology articulated in this paper, analogies can be a highly effective epistemic tool for generating and supporting hypotheses about the relation of archaeological sites with astronomical events. (shrink)

Nel 2011 sono mancati Paolo Lucentini e Alfonso Maierù. Nel ricordarne la vicenda umana e professionale come ricercatori e come docenti, questo articolo intende mettere in luce in particolare il contributo che essi hanno dato alla Storia del pensiero medievale accompagnando gli studi dottrinali con importanti edizioni di testi inediti. Paolo Lucentini and Alfonso Maierù passed away in 2011. This article, in remembrance of their personal and professional roles as researchers and teachers, will highlight the contributions that they made to (...) the history of medieval thought, showing how they combined doctrinal studies with important editions of unedited texts. (shrink)

ABSTRACT: In its historical deployment, socialist thought has attracted the attention of numerous experts and thinkers. The results reached from the above mentioned efforts, are quite irregular in fact. These studies are very often linked the marxist tradition, that shifted its identity to label previous social reformers as "utopian socialists". Specifically, our academic Spanish tradition has traditionally been dependant -historically and intellectually- on other Continental currents of thought. We state, that the preeminence and fundamental influence on our Spanish culture in (...) the Iberian Peninsula, has traditionally had its origin here, between modernity and industrialism, in France. Consistently, contributions concerning authors like Saint-Simon, Fourier or Cabet do exist. However, it is necessary to say that there is a bibliographical and very significant emptiness around one of the most relevant figures of European history in the 19th Century. Such emptiness has to do with the absence of publications concerning Robert Owen and his meaning in Spanish. Key words: Christianity, Modernity, Industrialism, Utopian Socialism, Socialism, Rationality, History. (shrink)

From the thirties "sinarquismo" became an important sociopolitic and socioideological strength in contrast with the Mexican posrevolutionary political system. This article makes an attempts to give and answer to some questions : what was the "sinarquismo" origin and development? Under what bases did it take root socially, politically and ideologically speaking?. How was "sinarquismo" linked to the global context of conservative, catholic and right-winger movements? And what was the story of the "sinarquista" movement in the middle occident of Mexico?

This paper surveys the issue of relativistic causality within the framework of algebraic quantum field theory . In doing so, we distinguish various notions of causality formulated in the literature and study their relationships, and thereby we offer what we hope to be a useful taxonomy. We propose that the most direct expression of relativistic causality in AQFT is captured not by the spectrum condition but rather by the axiom of local primitive causality, in that it entails a form of (...) local determinism for quantum fields which generalizes the constraint of no superluminal propagation of classical field theories to relativistic quantum field theory. We discuss the status of the axiom of micro-causality by locating its place within a large family of separability/independence/locality conditions developed for AQFT and also by relating it to so-called no-signalling theorems. And we also provide a critical survey of attempts to understand the implications for relativistic causality of the distant correlations endemic to the states in models of AQFT satisfying the standard axioms, and we provide an assessment of attempts to employ Reichenbach's common cause principle in AQFT to defuse worries that these distant correlations implicate direct causal connections between relatively spacelike events. (shrink)

In this paper I propose a way of characterizing human agency in terms of the concept of a two‐way power. I outline this conception of agency, defend it against some objections, and briefly indicate how it relates to free agency and to moral praise‐ and blameworthiness.