Atran adds a synthesis of much of the literature on folk-biological classification to important new experimental data relevant to long-standing inferences about the structure of folk taxonomies. What we know about such systems is somewhat overstated, and key issues remain unresolved, especially concerning the centrality of “generic species,” the primacy of “general purpose” taxonomies, and domain specificity.
When certain formal symbol systems (e.g., computer programs) are implemented as dynamic physical symbol systems (e.g., when they are run on a computer) their activity can be interpreted at higher levels (e.g., binary code can be interpreted as LISP, LISP code can be interpreted as English, and English can be interpreted as a meaningful conversation). These higher levels of interpretability are called "virtual" systems. If such a virtual system is interpretable as if it had a mind, is such a "virtual (...) mind" real? This is the question addressed in this "virtual" symposium, originally conducted electronically among four cognitive scientists: Donald Perlis, a computer scientist, argues that according to the computationalist thesis, virtual minds are real and hence Searle's Chinese Room Argument fails, because if Searle memorized and executed a program that could pass the Turing Test in Chinese he would have a second, virtual, Chinese-understanding mind of which he was unaware (as in multiple personality). Stevan Harnad, a psychologist, argues that Searle's Argument is valid, virtual minds are just hermeneutic overinterpretations, and symbols must be grounded in the real world of objects, not just the virtual world of interpretations. Computer scientist Patrick Hayes argues that Searle's Argument fails, but because Searle does not really implement the program: A real implementation must not be homuncular but mindless and mechanical, like a computer. Only then can it give rise to a mind at the virtual level. Philosopher Ned Block suggests that there is no reason a mindful implementation would not be a real one. (shrink)
En "Legal Reasons, Sources and Gaps", Raz señala que las lagunas jurídicas existen sólo cuando el derecho habla con voz incierta o cuando habla con muchas voces, pero que no hay lagunas cuando el derecho guarda silencio. En este último caso habría reglas de clausura, analíticamente verdaderas, que impiden la ocurrencia de esas lagunas. Según Raz, si hay una laguna en un sistema jurídico, entonces no es verdadero ni falso que exista una razón concluyente para ejecutar cierta acción. Así, una (...) de las contribuciones más importantes de Raz a la solución del problema de las lagunas jurídicas es subrayar que el discurso jurídico no está completamente controlado por la bivalencia. Sin embargo, a menudo se sostiene que el rechazo de la bivalencia conduce a contradicciones. Si esta afirmación fuese verdadera, entonces la solución de Raz al problema de las lagunas jurídicas se vería seriamente amenazada. En este artículo mostramos, con ayuda de una herramienta analítica sofisticada, i.e., la lógica de la verdad de G.H. von Wright, que el rechazo de la bivalencia sólo nos compromete a aceptar la conclusión trivial de que puede haber proposiciones que no son verdaderas ni falsas. Por esta razón, el trabajo de Raz todavía puede ser considerado un buen punto de partida para analizar las relaciones entre normas, razonamiento práctico y lagunas jurídicas. Sin embargo, también mostramos que para admitir proposiciones que no son verdaderas ni falsas, las tesis de Raz deben ser reformuladas. De otra manera, la tesis de que no existen lagunas cuando el derecho guarda silencio no sería compatible con el rechazo de la bivalencia. /// In his paper "Legal Reasons, Sources and Gaps", Raz says that legal gaps only exist when law speaks with uncertain voice or when it speaks with many voices, but there are no gaps when law is silent. In this later case, rules of closure, which are analytically true, prevent from the occurrence of gaps. According to Raz, if there is a gap in a legal system, then both the claim that there is a conclusive legal reason to perform a certain action, and its negation are neither true nor false. Therefore, one of the Raz's most important contributions to the solution of the problem of legal gaps is to remark that legal discourse is not altogether governed by the principie of bivalence. However, philosophers often claim that the denial of bivalence leads to a logical inconsistency. If this claim were true, then Raz's solution to the problem of gaps would be seriously threatened. In this paper we show--with the aid of a sophisticated analytical tool, i.e., von Wright's truth-logic--that the rejection of bivalence only commits us to accept the trivial conclusion that propositions can lack truth-values. For this reason, Raz's paper can still be regarded as a good starting-point for analyzing the relationships between norms, practical reasoning and legal gaps. However, we also show that in order to admit propositions which are neither true nor false, Raz's theses must be reformulated. Otherwise, the claim that there is no gap when law is silent would not be compatible with the rejection of bivalence. (shrink)
Existence in Black is the first collective statement on the subject of Africana Philosophy of Existence. Drawing upon resources in Africana philosophy and literature, the contributors explore some of the central themes of Existentialism as posed by the context of what Frantz Fanon has identified as "the lived-experience of the black." Among questions posed and explored in the volume are: What is to be done in a world of near universal sense of superiority to, if not universal hatred of, black (...) folk?; What is black suffering?; What is the meaning (if any) of black existence? The introduction argues that a response to these questions requires a journey through the resources of identity questions in critical race theory and the teleological dimensions of liberation theory. The contributors address these questions through an analysis of nearly every dimension of Africana phiosophy. In the first half of the book, they address Black Philosophies of Existence in terms of Traditional African Philosophy, the Harlem Renaissance, Du Boisian Double-Consciousness, and Fanonian and Sartrean Philosophies of Existence. In the second half of the book, contributors consider racial identity through examinations of such concepts as equality, death, mimesis, property, embodiment, technology, disappointment, and dread. Part II is an exploration of postmodern challenges to "black existence" through discussions of postmodern conservatism, Nietzsche's thoughts on blacks, Richard Wright and fragmented consciousness, and feminist critiques of race. And Part IV is an examination of problems of historical responsibility and constructing black liberation theories. Contributors are: Ernest Allen, Jr., Robert Birt, Bernard Boxill, George Carew, Bobby Dixon, G.M. James Gonzales, Lewis R. Gordon, Leonard Harris, Floyd Hayes, III, Paget Henry, Patricia Huntington, Joy Ann James, Clarence Shole Johnson, Bill E. Lawson, Howard McGary, Roy D. Morrison, William Preston, Jean-Paul Sartre, T. Denean Sharpley-Whiting, Gary Schwartz, Robert Westley, and Naomi Zack. (shrink)
When certain formal symbol systems (e.g., computer programs) are implemented as dynamic physical symbol systems (e.g., when they are run on a computer) their activity can be interpreted at higher levels (e.g., binary code can be interpreted as LISP, LISP code can be interpreted as English, and English can be interpreted as a meaningful conversation). These higher levels of interpretability are called "virtual" systems. If such a virtual system is interpretable as if it had a mind, is such a "virtual (...) mind" real? This is the question addressed in this "virtual" symposium, originally conducted electronically among four cognitive scientists: Donald Perlis, a computer scientist, argues that according to the computationalist thesis, virtual minds are real and hence Searle's Chinese Room Argument fails, because if Searle memorized and executed a program that could pass the Turing Test in Chinese he would have a second, virtual, Chinese-understanding mind of which he was unaware (as in multiple personality). Stevan Harnad, a psychologist, argues that Searle's Argument is valid, virtual minds are just hermeneutic overinterpretations, and symbols must be grounded in the real world of objects, not just the virtual world of interpretations. Computer scientist Patrick Hayes argues that Searle's Argument fails, but because Searle does not really implement the program: A real implementation must not be homuncular but mindless and mechanical, like a computer. Only then can it give rise to a mind at the virtual level. Philosopher Ned Block suggests that there is no reason a mindful implementation would not be a real one. (shrink)
The behavioural decision-theoretic concepts of mental accounting, framing and transaction utility have now been employed in marketing models and techniques. To date, however, there has not been any discussion of the ethical issues surrounding these significant developments. In this paper, an ethical evaluation is structured around three themes: (i) utilitarian justification (ii) the strategic exploitation of cognitive habits, and (iii) the claim of scientific status for the techniques. Some recommendations are made for ethical practices.
There are numerous occasions on which we need to reason about a finite number of events. And we often need to consider only those events which are given or which we perceive. These give rise to the Criteria of Finiteness and Closedness. Allen's logic provides a way of reasoning about events. In this paper I examine Allen and Hayes' axiomatisation of this logic, and develop two other axiomatisations based on the work by Russell and Thomason. I shall show that these (...) three axiomatisations are weakly equivalent, and that only the last two meet the Criteria of Finiteness and Closedness (to different degrees). I shall then examine two ways of constructing instants of time in a finite and closed world, i.e. the Russell construction and the Thomason construction. I shall prove that these two constructions are equivalent under certain conditions. (shrink)
Francesco Petrarca, translated by H. Nachod: Introduction. A self-portrait. The ascent of Mont Ventoux. On his own ignorance and that of many others. A disapproval of an unreasonable use of the discipline of dialectic. An Averroist visits Petrarca. Petraca's aversion to Arab science. A request to take up the fight against Averroes.--Lorenzo Valla, translated by C.E. Trinkaus, Jr.: Introduction by C.E. Trinkaus, Jr. Dialogue on free will.--Marsilio Ficino, translated by J.L. Burroughs: Introduction, by J.L. Burroughs. Five questions concerning the mind.-- (...) Giovanni Pico della Mirandola, translated by E.L. Forbes Introduction, by P.O. Kristeller. Oration on the dignity of man.--Pietro Pomponazzi, translated by W.H. Hay. Introduction, by J.H. Randall. On the immortality of the soul.--Juan Luis Vives, translated by N. Lenkeith: Introduction, by N. Lenkeith. A fable about man.--Selective bibliography (p. 397-400). (shrink)
"Hay quien va por la vida viéndola, dejándose sorprender por la existencia". Esta obra es una aproximación laica a los fundamentos de la experiencia mística. Ayudándose de pensadores contemporáneos como Eugenio Trías, Marià Corbí o María Zambrano, la autora fundamenta el silencio de sí como peculiar vía de conocimiento y explora las formas en las que éste pueda favorecerse. Es una invitación a adentrarse en la lucidez asombrada como núcleo de una experiencia de vida plenamente humana. Mediante la relectura (y (...) el redescubrimiento) de los maestros del camino interior -exploradores del conocimiento silencioso-, se pondrá en evidencia la práctica de un peculiar esfuerzo de desegocentración como medio de sutilización de las capacidades humanas. La exploración de La nube del no-saber, del Bhagavad Gîta, o de las obras de Maestro Eckhart, Rûmî, Al-Yîlî, Lanfranchi, Juan de la Cruz, Teresa de Jesús, Nisargadatta Maharaj o Yoka Daishi entre otros, nos acerca a unas lecciones de vida que, nacidas de la experiencia mística, dejarán al descubierto la aportación propia e insustituible de ese rico legado. (shrink)
The paper seeks to present a conception of the didactics of logic according to Jean Alexis Borrelly (1738–1810), the author of among others Plan de réformations des etudes élémentaires (La Haye 1776) and a textbook for logic Elémens de l’art de penser, ou la logique, réduite à ce qu’elle a d’utile (Berlin 1777). The legacy of Borrelly summarises the tendencies typical of the Enlightenment with regard to 1) reforms of education, 2) redefining values in the didactics of philosophy, and 3) (...) modification in the then logic. The presentation has a twofold structure. In part one I present some specific characteristics of Borrelly’s didactic plan against the background of school reforms. Part two is devoted to the teaching of logic: 1) the nature of logic in the didactic curriculum, 2) its realization in Borrelly’s textbook for logic, and that against the background of modern tendencies in reforming a conception of this discipline. This is in particular with regards to the theory and practice of the didactics of logic in Polish school reforms contemporary to Borrelly’s accomplishments. It has been pointed out that both at the declarative level and in the textbooks Borrelly’s conception is an example of eclectic achievements typical of the Enlightenment. They come to terms with the radical solutions (e. g. Descartes, Locke), hostile to formal logic, with school requirements, a fact that makes Borrelly’s solution to be one of the standards characteristic, for instance, of the popular Logic of Port-Royal by A. Arnauld and P. Nicole. (shrink)
En este escrito pretendo hacer una exposición de algunas de las ideas más importantes de Brandom. Esta exposición tenderá a mostrar, en primer lugar, los conceptos más importantes de la teoría semántica inferencialista que plantea Brandom. En segundo lugar, esta exposición tenderá a mostrar que hay dos formas de racionalidad en la teoría que Brandom elabora, a saber, la racionalidad que usa conceptos e introduce contenidos conceptuales en el lenguaje, y la racionalidad que esclarece y critica los contenidos de los (...) conceptos. Por último, todo lo anterior será conducido a señalar la gran importancia que Brandom atribuye al vocabulario lógico. (shrink)
O'Donnell, J. R. Anton Charles Pegis on the occasion of his retirement.--Conlan, W. J. The definition of faith according to a question of MS. Assisi 138: study and edition of text.--Spade, P. V. Five logical tracts by Richard Lavenham.--Maurer, A. Henry of Harclay's disputed question on the plurality of forms.--Brown, V. Giovanni Argiropulo on the agent intellect: an edition of Ms. Magliabecchi V 42.--Synan, E. A. The Exortacio against Peter Abelard's Dialogus inter philosophum, Iudaeum et Christianum.--Fitzgerald, W. Nugae Hyginianae.--Sheehan, M. (...) M. Marriage and family in English conciliar and synodal legislation.--Shook, L. K. Riddles relating to the Anglo-Saxon scriptorium.--Boyle, L. E. The De regno and the two powers.--Colledge, E. A Middle English Christological poem.--Gough, M. R. E. Three forgotten martyrs of Anazarbus in Cilicia.--Häring, N. Chartres and Paris revisited.--Hayes, W. Greek recentiores, (Ps.) Basil, Adversus eunomium, IV-V.--Owens, J. The physical world of Parmenides. (shrink)
En el artículo se examinan los dos intentos de Aristóteles por explicar el fenómeno de las acciones voluntarias e involuntarias: Ética Eudemia (EE) II 6-9 y Ética Nicomaquea (EN) III 1. Entre ambos tratamientos hay muchas coincidencias, pero también diferencias sustantivas, tanto en la caracterización de las acciones involuntarias como en la estrategia argumentativa general y la definición de lo voluntario. El artículo procura dar cuenta de dichas diferencias de contenido en función de la estrategia metodológica general por la que (...) opta Aristóteles en uno y otro caso. The article examines Aristotle's two attempts to explain the phenomena of voluntary and involuntary actions: Eudemian Ethics (EE) II 6-9 and Nicomachean Ethics (EN) III 1. Though there are notorious coincidences, there are also substantial differences between them in the characterization of involuntary actions, in the general argumentative strategy, and in the definition of voluntary actions. The paper endeavors to account for these material differences on the basis of the general methodological strategy used by Aristotle in each case. (shrink)
Nada hay más confortable para el hombre, ni más peligroso, que las certezas. Nuestra mejor defensa es la filosofía, que consiste engran medida en el arte de cuestionarlas, de atreverse a pensar, de interpelar las verdades establecidas y ver qué esconden. En estepaseo por la historia de la filosofía, Fernando Savater nos presenta a los grandes personajes que con sus preguntas, y en ocasiones con sus respuestas, han marcado el pensamiento occidental. Platón, Aristóteles, Hobbes, Tomás de Aquino, Nietzsche, Marx, Ortega, (...) Wittgenstein y hasta dieciocho filósofos más desfilan por estas páginas de la mano de Savater, que con su habitual estilo lúcido, ameno e inteligente explica sus ideas más importantes y resume sus trayectorias. Un canto al irrenunciable ejercicio de la libertad intelectual, este libro es en realidad una invitación a huir de los tópicos y a compartir con los grandes filósofos la maravillosa aventura de pensar. (shrink)
Los niños con malformaciones congénitas que antes eran incompatibles con la vida, ahora pueden mantenerse en vida, pero habitualmente el defecto subyacente y sus consecuencias no pueden mejorarse. Durante este periodo surge el dilema de reanimar, continuar un tratamiento agresivo, o bien no tomarninguna actitud activa ante un determinado caso. Por eso, muchos neonatólogos se plantean ahora una aplicación selectiva de las opciones terapéuticas (lo que algunos llaman tratamiento selectivo). Sin embargo, algunos problemas estrictamente médicos hacen dificil la aplicación de (...) un tratamiento selectivo neonatal. En primer lugar, es complicado establecer un diagnóstico preciso en un rn. En segundo lugar, el pronóstico es muchas veces incierto. En tercerlugar, la actuación médica es en muchas ocasiones urgente y no puede demorarse salvo a costa de disminuir las posibilidades de supervivencia o aumentar el riesgo de secuelas posteriores en el niño. Por ahora , no hay critérios médicos fiables para valorar en la sala de parto si un prematuro extremo de bajo peso (PEBP) en concreto sobrevivirá. Si sobrevive es poco posible predecir si será normal o quedará leve o gravemente dañado. Por consihuiente, por una parte,para algunos niños un tratamiento agresivo no sólo no se puede probar que sea beneficioso, sino que incluso puede serles perjudicial. Por otra parte podemos pensar que un bebé no tratado enérgicamente podría haber sobrevivido razonablemente intacto con la aplicación de una terapia más agresiva. Es un dilema cruél. Las opciones pueden estar no tanto entre "correctos" e "incorrectos" absolutos, como entre bienes y daños mayores o menores. (shrink)
Domestic livestock animals and soils must be considered together as part of an agroecosystem which includes plants. Soil sustainability may be simply defined as the maintenance of soil productivity for future generations. There are both positive and negative aspects concerning the role of animals in soil sustainability. In a positive sense, agroecosystems which include ruminant animals often also include hay forage-or pasture-based crops in the humid regions. Such crops stabilize the soil by decreasing erosion, improving soil structure and usually require (...) fewer chemical inputs. Monogastric animal culture is based on an agroecosystem consisting of mainly grain crops. These crops can result in the soil being exposed to water and wind erosion although soil conservation practices that significantly reduce soil losses may be followed. The management of animal manures is not always compatible with soil conservation practices. Careful management of the nutrients in manure is absolutely necessary to avoid nitrate contamination of ground water or phosphorus loading of streams and lakes. In a negative sense, increases in animal livestock populations in association with human population growth are promoting desertification in the arid and semi-arid regions of the world. The key component for a fully compatible and acceptable association between domestic animals and soil productivity is proper management. Careful management of the components of an animal-based agroecosystem is required if soil productivity and environmental quality are to be maintained. Although we have much to learn, technologies are available to move a considerable way towards this ideal state. (shrink)
