Growth of urban areas, the corresponding increased demand for utility services and the possibility of new types of utility systems are overcrowding near surface underground space with urban utilities. Available subsurface space will continue to diminish to the point where utilidors (utility tunnels) may become inevitable. Establishing future sustainable strategies in urban underground engineering consists of the ability to lessen the use of traditional trenching. There is an increasing interest in utility tunnels for urban areas as a sustainable technique to (...) avoid congestion of the subsurface. One of the principal advantages of utility tunnels is the substantially lower environmental impact compared with common trenches. Implementing these underground facilities is retarded most by the initial cost and management procedures. The habitual procedure is to meet problems as they arise in current practice. The moral imperative of sustainable strategies fails to confront the economic and political conflicts of interest. Municipal engineers should act as a key enabler in urban underground sustainable development. (shrink)

One can (for the most part) formulate a model of a classical system in either the Lagrangian or the Hamiltonian framework. Though it is often thought that those two formulations are equivalent in all important ways, this is not true: the underlying geometrical structures one uses to formulate each theory are not isomorphic. This raises the question of whether one of the two is a more natural framework for the representation of classical systems. In the event, the answer is yes: (...) I state and sketch proofs of two technical results—inspired by simple physical arguments about the generic properties of classical systems—to the effect that, in a precise sense, classical systems evince exactly the geometric structure Lagrangian mechanics provides for the representation of systems, and none provided by Hamiltonian. The argument not only clarifies the conceptual structure of the two systems of mechanics, but also their relations to each other and their respective mechanisms for representing physical systems. It also shows why naïvely structural approaches to the representational content of physical theories cannot work. [Lagrange] grasped that he had gained a method of stating dynamical truths in a way, which is perfectly indifferent to the particular methods of measurement employed in fixing the positions of the various parts of the system. Accordingly, he went on to deduce equations of motion, which are equally applicable whatever quantitative measurements have been made, provided that they are adequate to fix positions. The beauty and almost divine simplicity of these equations is such that these formulae are worthy to rank with those mysterious symbols which in ancient times were held directly to indicate the Supreme Reason at the base of all things. (Whitehead [1948], p. 63)1. Introduction2.Classical Systems3. The Possible Interactions of a Classical System and the Structure of Its Space of States4. Classical Systems Are Lagrangian5. Classical Systems Are Not Hamiltonian6. How Lagrangian and Hamiltonian Mechanics Represent Classical Systems7. The Conceptual Structure of Classical Mechanics. (shrink)

Much controversy surrounds the question of what ought to be the proper definition of 'singularity' in general relativity, and the question of whether the prediction of such entities leads to a crisis for the theory. I argue that a definition in terms of curve incompleteness is adequate, and in particular that the idea that singularities correspond to 'missing points' has insurmountable problems. I conclude that singularities per se pose no serious problem for the theory, but their analysis does bring into (...) focus several problems of interpretation at the foundation of the theory often ignored in the philosophical literature. (shrink)

I argue that all current research programs in quantum gravity conform to the 17th century hypothetico-deductive model of scientific inquiry, perhaps of necessity given the current state of technology. In so far as they do not recognize and advertise the shortcomings of the research method they use, they do a disservice to the integrity of science, for the method admits of far less certainty accruing to its products than one would be led to believe by the pronouncements of researchers in (...) the area. (shrink)

Posterior a Hiroshima y Nagasaki se hizo visible hacia dónde conducirían la obtención y uso de conocimientos y creación de artefactos que no se correspondieran a las metas de subsistencia y mejoramiento humanos, emergieron movimientos y estudios relacionados con los impactos sociales de la ciencia y la tecnología. Surgió en ese contexto el campo denominado Ciencia- Tecnología- Sociedad (CTS), centrado en las complejas interrelaciones que la ciencia y la tecnología y la sociedad. El presente texto tiene el objetivo de profundizar (...) en el trabajo de fundamentación teórica a partir del reconocimiento de algunas ideas como: la relación de los seres humanos con sus entornos es socio- tecno- cognitiva, la interacción conocimiento- sociedad es contradictoria, y es preciso reconocer la complejidad del conocimiento CTS. Por último, una nueva propuesta, en las circunstancias actuales un acrónimo más abarcador que el de CTS puede ser SOCITEI (So: sociedad, CI: conocimiento, Te: tecnología, In: innovación). After Hiroshima and Nagasaki the destiny of the obtaining and use of knowledge as well as the creation of artifacts that were not according to the goals of human subsistence and improvement became visible, movements and studies related to the social impacts of science and technology emerged. The field called science - technology - society (CTS) (Spanish acronym) arose in that context, focused on the complex interrelationships in science technology and society. This text aims to deepen the work of theoretical foundation in recognition of some ideas like: the relationship of human beings with their environments is socio-techno - cognitive, interaction knowledge - society is contradictory, and we must recognize the complexity of knowledge CTS. Finally, in the new circumstances a new proposal a more encompassing acronym than the CTS can be SOCITEI (SO: society, CI: knowledge, TE: technology, IN: innovation) (Spanish acronyms). (shrink)

En la sección titulada Irreversibilidad y el Poder de Perdonar en La Condición Humana, Arendt afirma que “el descubridor del papel del perdón en la esfera de los asuntos humanos fue Jesús de Nazaret”. En lo que sigue, quisiéramos aproximarnos al uso antiguo del verbo griego sungignôskô que a nuestro entender cumple el mismo papel que Arendt advierte en esta supuesta novedad cristiana —la “mutua exoneración de lo que se ha hecho”—, no sólo para entender en qué consistiría el descubrimiento (...) que Arendt atribuye a Jesús, sino porque creemos que la idea de que los griegos desconocían la facultad de perdonar es, si no falsa, al menos imprecisa. In the section titled Irreversibility and the Power to Forgive in the Human Condition, Arendt claims that “the discoverer of the role of forgiveness in the sphere of human affairs was Jesus of Nazareth”. In what follows, we would like to approach the ancient use of the Greek verb sungignôskô which, in our opinion, fulfills the same role that Arendt finds in this alleged Christian novelty —the “mutual exoneration of what has been done”— not only to understand what would the actual discovery Arendt attributes to Jesus imply, but because we believe claiming the Greeks were unaware of the faculty of forgiveness is, if not false, at least inaccurate. (shrink)

An energy condition, in the context of a wide class of spacetime theories, is, crudely speaking, a relation one demands the stress-energy tensor of matter satisfy in order to try to capture the idea that "energy should be positive". The remarkable fact I will discuss in this paper is that such simple, general, almost trivial seeming propositions have profound and far-reaching import for our understanding of the structure of relativistic spacetimes. It is therefore especially surprising when one also learns that (...) we have no clear understanding of the nature of these conditions, what theoretical status they have with respect to fundamental physics, what epistemic status they may have, when we should and should not expect them to be satisfied, and even in many cases how they and their consequences should be interpreted physically. Or so I shall argue, by a detailed analysis of the technical and conceptual character of all the standard conditions used in physics today, including examination of their consequences and the circumstances in which they are believed to be violated. (shrink)

In this chapter, we discuss a selection of current views of the neural correlates of consciousness (NCC). We focus on the different predictions they make, in particular with respect to the role of prefrontal cortex (PFC) during visual experiences, which is an area of critical interest and some source of contention. Our discussion of these views focuses on the level of functional anatomy, rather than at the neuronal circuitry level. We take this approach because we currently understand more about experimental (...) evidence at this coarse level and because these results are appropriate for arbitrating between current theoretical frameworks. We discuss the Two-Visual-Systems Hypothesis (Milner & Goodale 1995; 2006), Local Recurrency (Lamme 2010; Lamme 2006), Higher Order (Lau 2008; Lau & Rosenthal 2011) and Global Workspace theories (Baars 1997; Baars 2005; Dehaene & Naccache 2001; Dehaene 2014). Despite the apparent stark differences between conscious and unconscious perceptual processing, available evidence suggests that their neural substrates must be largely shared. This indicates that the difference in neural activity between conscious and unconscious perceptual processing is likely to be subtle and highly specialized. We argue that current experimental evidence about the involvement of specific activity in prefrontal cortex supports the higher order neural theory of consciousness. In consequence, imaging techniques that focus only on marked differences between conscious and unconscious level of activity are likely to be insensitive to the relevant neural activity patterns that underlie conscious experiences. Finally, it follows from the evidence we discuss that the functional advantages of conscious over unconscious perceptual processing may be more limited than commonly thought. (shrink)

Every physical theory has two different forms of mathematical equations to represent its target systems: the dynamical and the kinematical. Kinematical constraints are differentiated from equations of motion by the fact that their particular form is fixed once and for all, irrespective of the interactions the system enters into. By contrast, the particular form of a system's equations of motion depends essentially on the particular interaction the system enters into. All contemporary accounts of the structure and semantics of physical theory (...) treat dynamics, i.e., the equations of motion, as the most important feature of a theory for the purposes of its philosophical analysis. I argue to the contrary that it is the kinematical constraints that determine the structure and empirical content of a physical theory in the most important ways: they function as necessary preconditions for the appropriate application of the theory; they differentiate types of physical systems; they are necessary for the equations of motion to be well posed or even just cogent; and they guide the experimentalist in the design of tools for measurement and observation. It is thus satisfaction of the kinematical constraints that renders meaning to those terms representing a system's physical quantities in the first place, even before one can ask whether or not the system satisfies the theory's equations of motion. (shrink)

este trabajo se dividirá en dos puntos: i) exponer las similitudes y las diferencias entre la teoría del materialismo eliminativista de los esposos Churchland y la teoría del funcionalismo de Daniel Dennett con respecto a su conceptualización sobre la concienci; y ii) analizar de manera crítica los planteamientos del materialismo eliminativista y del funcionalismo con respecto a su conceptualización acerca de la conciencia. Además, se sostendrá que en el ámbito de las ciencias cognitivas no existe un consenso, como tampoco una (...) base teórica y conceptual sobre qué es la conciencia. Así mismo, se tendrá en cuenta que, sobre el concepto de conciencia se indaga por la pertinencia del término ―si existe o no―; y de existir: si responde a patrones deterministas o si es un fenómeno ajeno a toda realidad empírica; lo cual lleva, de manera inevitable, a indagar por el debate acerca del libre albedrío. (shrink)

Although black holes are objects of central importance across many fields of physics, there is no agreed upon definition for them, a fact that does not seem to be widely recognized. Physicists in different fields conceive of and reason about them in radi- cally different, and often conflicting, ways. All those ways, however, seem sound in the relevant contexts. After examining and comparing many of the definitions used in practice, I consider the problems that the lack of a universally accepted (...) definition leads to, and discuss whether one is in fact needed for progress in the physics of black holes. I conclude that, within reasonable bounds, the profusion of different definitions is in fact a virtue, making the investigation of black holes possible and fruitful in all the many different kinds of problems about them that physicists consider, although one must take care in trying to translate results between fields. (shrink)

Arguably the most foundational principle in perception research is that our experience of the world goes beyond the retinal image; we perceive the distal environment itself, not the proximal stimulation it causes. Shape may be the paradigm case of such “unconscious inference”: When a coin is rotated in depth, we infer the circular object it truly is, discarding the perspectival ellipse projected on our eyes. But is this really the fate of such perspectival shapes? Or does a tilted coin retain (...) an elliptical appearance even when we know it’s circular? This question has generated heated debate from Locke and Hume to the present; but whereas extant arguments rely primarily on introspection, this problem is also open to empirical test. If tilted coins bear a representational similarity to elliptical objects, then a circular coin should, when rotated, impair search for a distal ellipse. Here, nine experiments demonstrate that this is so, suggesting that perspectival shapes persist in the mind far longer than traditionally assumed. Subjects saw search arrays of three-dimensional “coins,” and simply had to locate a distally elliptical coin. Surprisingly, rotated circular coins slowed search for elliptical targets, even when subjects clearly knew the rotated coins were circular. This pattern arose with static and dynamic cues, couldn’t be explained by strategic responding or unfamiliarity, generalized across shape classes, and occurred even with sustained viewing. Finally, these effects extended beyond artificial displays to real-world objects viewed in naturalistic, full-cue conditions. We conclude that objects have a remarkably persistent dual character: their objective shape “out there,” and their perspectival shape “from here.”. (shrink)

I explain the difficulty of making various concepts of and relating to probability precise, rigorous and physically significant when attempting to apply them in reasoning about objects living in infinite-dimensional spaces, working through many examples from cosmology. I focus on the relation of topological to measure-theoretic notions of and relating to probability, how they diverge in unpleasant ways in the infinite-dimensional case, and are even difficult to work with on their own. Even in cases where an appropriate family of spacetimes (...) is finite-dimensional, and so admits a measure of the relevant sort, however, it is always the case that the family is not a compact topological space, and so does not admit a physically significant, well behaved probability measure. Problems of a different but still deeply troubling sort plague arguments about likelihood in that context, which I also discuss. I conclude that most standard forms of argument used in cosmology to estimate the likelihood of the occurrence of various properties or behaviors of spacetimes have serious mathematical, physical and conceptual problems. (shrink)

I examine the debate between substantivalists and relationalists about the ontological character of spacetime and conclude it is not well posed. I argue that the hole argument does not bear on the debate, because it provides no clear criterion to distinguish the positions. I propose two such precise criteria and construct separate arguments based on each to yield contrary conclusions, one supportive of something like relationalism and the other of something like substantivalism. The lesson is that one must fix an (...) investigative context in order to make such criteria precise, but different investigative contexts yield inconsistent results. I examine questions of existence about spacetime structures other than the spacetime manifold itself to argue that it is more fruitful to focus on pragmatic issues of physicality, a notion that lends itself to several different explications, all of philosophical interest, none privileged a priori over any of the others. I conclude by suggesting an extension of the lessons of my arguments to the broader debate between realists and instrumentalists. 1 Introduction2 The Hole Argument3 Limits of Spacetimes4 Pointless Constructions5 The Debate between Substantivalists and Relationalists6 Existence and Physicality: An Embarassment of Spacetime Structures7 Valedictory Remarks on Realism and Instrumentalism, and the Structure of Our Knowledge of Physics. (shrink)

Resumen: Entre el pensamiento de José Gaos y el de Eduardo Nicol se cierne una diferencia sustancial en torno al concepto de la filosofía. Para el primero, ésta es una suerte de confesión personal; mientras que para Nicol la filosofía debe ser producto de una hazaña dialógica y el conocimiento tiene que ser objetivo.: José Gaos’s and Eduardo Nicol’s concepts of philosophy differ substantially. For the former, philosophy is a sort of personal confession, whereas for the later it must be (...) the outcome of dialogical achievement, and as for knowledge, this has to be objective. (shrink)

Introspection is a fundamental part of our mental lives. Nevertheless, its reliability and its underlying cognitive architecture have been widely disputed. Here, I propose a principled way to model introspection. By using time-tested principles from signal detection theory (SDT) and extrapolating them from perception to introspection, I offer a new framework for an introspective signal detection theory (iSDT). In SDT, the reliability of perceptual judgments is a function of the strength of an internal perceptual response (signal- to-noise ratio) which is, (...) to a large extent, driven by the intensity of the stimulus. In parallel to perception, iSDT models the reliability of introspective judgments as a function of the strength of an internal introspective response (signal-to-noise ratio) which is, to a large extent, driven by the intensity of conscious experiences. Thus, by modelling introspection after perception, iSDT can calibrate introspection’s reliability across a whole range of contexts. iSDT offers a novel, illuminating way of thinking about introspection and the cognitive processes that support it. (shrink)

All accounts of causality that presuppose the propagation or transfer or some physical stuff to be an essential part of the causal relation rely for the force of their causal claims on a principle of conservation for that stuff. General Relativity does not permit the rigorous formulation of appropriate conservation principles. Consequently, in so far as General Relativity is considered and fundamental physical theory, such accounts of causality cannot be considered fundamental. The continued use of such accounts of causality ought (...) not be proscribed, but justification is due from those who would use them. (shrink)

El presente artículo estudia los fundamentos metodológicos de la obra cartesiana como antecedente filosófico en la estructuración de la ‘función’ y el ‘símbolo’ en la obra de Cassirer. Dicha incorporación se habría desarrollado a través de dos momentos: en el primero se reconoce el valor de los estudios científicos y matemáticos propuestos por el francés como una vía indispensable para el estudio de las sustancias naturales del mundo; el segundo, critica la falta de continuidad metodológica empleada en el estudio de (...) la sustancia humana. Para tales fines, se elabora un análisis comparativo entre las obras de Descartes y las de Cassirer. (shrink)

Martin Buber believed that life's deepest truth lies in human relationships. In this classic work he puts this belief into practice, applying it to the concrete problems of contemporary society.

The question of the existence of gravitational stress-energy in general relativity has exercised investigators in the field since the inception of the theory. Folklore has it that no adequate definition of a localized gravitational stress-energetic quantity can be given. Most arguments to that effect invoke one version or another of the Principle of Equivalence. I argue that not only are such arguments of necessity vague and hand-waving but, worse, are beside the point and do not address the heart of the (...) issue. Based on a novel analysis of what it may mean for one tensor to depend in the proper way on another, which, en passant, provides a precise characterization of the idea of a "geometric object", I prove that, under certain natural conditions, there can be no tensor whose interpretation could be that it represents gravitational stress-energy in general relativity. It follows that gravitational energy, such as it is in general relativity, is necessarily non-local. Along the way, I prove a result of some interest in own right about the structure of the associated jet bundles of the bundle of Lorentz metrics over spacetime. I conclude by showing that my results also imply that, under a few natural conditions, the Einstein field equation is the unique equation relating gravitational phenomena to spatiotemporal structure, and discuss how this relates to the non-localizability of gravitational stress-energy. (shrink)

This article introduces a different insight on the role of leadership in the process to develop sustainability and achieve lasting improvement in quality of life. Authors bring together the societal, organizational and individual levels of sustainability in one conceptual framework and discuss the interconnectedness among these three levels. The conclusion is that an effective approach to sustainability starts from the inside, i.e. from the individual level. This implies a decisive role for personal leadership in the change path towards sustainability. It (...) brings new challenges and responsibilities for higher education in the preparation of a new generation of managers and leaders who can think and act from a sustainability perspective. (shrink)

The ambiguous-cue task is composed of two-choice simultaneous discriminations involving three stimuli: positive (P), ambiguous (A) and negative (N). Two different trial types are presented: PA and NA. The ambiguous cue (A) served as an S- in PA trials, but as an S+ in NA trials. When using this procedure, it is typical to observe a less accurate performance in PA trials than in NA trials. This is called the ambiguous-cue effect. Recently, it was reported in starlings that the ambiguous-cue (...) effect decreases when the stimuli are presented on an angled (120°) panel. The hypothesis is that the angled panel facilitates that the two cues from each discrimination are perceived as a compound, precluding value transfer via a second-order conditioning mechanism. In this experiment, we used pigeons and a flat panel. Nevertheless, our data were quite similar to the previous data in starlings. We conclude that the form of the panel cannot explain the ambiguous-cue effect. Several alternatives to be explored in future experiments are suggested. The riddle of the ambiguous-cue problem still remains unsolved. (shrink)

The Coronavirus Disease 2019 pandemic prompted the need for a teleneuropsychology protocol for the cognitive assessment of older adults, who are at increased risk for both COVID-19 and dementia. Prior recommendations for teleneuropsychological assessment did not consider many of the unique challenges posed by COVID-19. The field is still in need of clear guidelines and standards of care for the assessment of older adults under the current circumstances. Advantages of teleneuropsychological assessment during the COVID-19 pandemic include reduced risk of contracting (...) the virus, eliminating travel time and reducing cost, and more rapid access to needed services. Challenges include disparities in technology access among patients, reduced control over the testing environment, impeded ability to make behavioral observations, and limited research on valid and reliable cognitive assessment measures. The aim of this perspective review is to propose a teleneuropsychological protocol to facilitate neuropsychological assessment utilizing a virtual platform. The proposed protocol has been successful with our clinical and research populations and may help neuropsychologists implement teleneuropsychology services without compromising validity or reliability. However, there is increasing need for research on teleneuropsychological assessment options for both clinical and research purposes. (shrink)

(1982). Fluvial interconnection in the context of Latin American integral development. World Futures: Vol. 18, Alternatives for Humankind: The Role of Latin America, pp. 71-116.

Aunque con el paso del tiempo, las tendencias político-liberales cambiaron completamente su sentido, no se puede entender directamente en qué puede consistir algo como la democracia, esto apelando a ejemplos de la desigualdad descarada que se vive en todo el mundo. Este ensayo no pretende enumerar todos los casos de desigualdad, tampoco se propone hablar del significado de la democracia a lo largo de la historia; el motivo es hablar, a un nivel muy general, del sentido de la democracia en (...) la educación como un ideal que tiene que prevalecer en lo académico. Retomaremos algunos personajes visionarios que cambiaron la forma en el cómo se educa, expondremos de qué manera es importante su método educativo para la concepción de una educación, ligada a un ideal democrático. Finalizaré llegando, de una manera muy particular, al concepto de democracia en la educación y él por qué se considera que es un valor integral para educar. (shrink)

The purpose of this paper is to study the philosophical basis of the architecture of two Artificial Intelligence systems (AlphaGo and Hide and Seek). The problem considers the elucidation of the epistemological distinction between “knowledge” and “intuition” and questions whether the fulfillment of a programmed metric can be considered as a product of knowledge or, as an example of intuitive thinking. Through the analysis of both examples, it is shown that achieving the desired objective (winning a game of Go and (...) developing new hiding strategies) is not derived from the system’s architecture, but from the AI’s creativity to achieve the desired result; in that sense, it can be confirmed that certain intelligent systems are capable of creative and intuitive thinking. El objetivo del presente artículo es estu- diar los fundamentos filosóficos de la arquitectura de programación en dos sistemas de Inteligencia Artificial (AlphaGo y Hide and Seek). El problema dilucida la distinción epistemológica de los concep- tos “conocimiento”, “intuición” y “abducción”, para definir si el cumplimiento exitoso de una métrica programada, por parte de una computadora, es con- dición suficiente para atribuirle un comportamiento inteligente. A través del análisis de ambos ejemplos se muestran dos cuestiones: i) el cumplimiento exitoso de un objetivo programado ofrece nuevos recursos de conocimiento, ii) dichos conocimientos dependen de la ejecución de un programa cuyo pro- cesamiento es desarrollado por una IA y, por tanto, las operaciones superan las capacidades intelectivas humanas. Las conclusiones apuntan a que las com- putadoras son recursos de conocimiento especiales de comprobación de hipótesis. (shrink)

Kierkegaard’s distinction of chatter from silence gives forgiveness a linguistic spin. How can forgiveness be spoken? Is forgiveness something to be said and heard? Is saying it aloud saying too much, or too little? What is said when (and if) forgiveness is said? Should forgiveness be chatted away, or reserved in silence? For Kierkegaard, the answer(s) is (are) neither/nor: forgiveness can only be said indirectly, kept (almost) indistinguishable from resentment or indifference, as if discarded in the face of offense—if it (...) is to happen. (shrink)

I examine the debate between substantivalists and relationalists about the ontological character of spacetime and conclude it is not well posed. I argue that the hole argument does not bear on the debate, because it provides no clear criterion to distinguish the positions. I propose two such precise criteria and construct separate arguments based on each to yield contrary conclusions, one supportive of something like relationalism and the other of something like substantivalism. The lesson is that one must fix an (...) investigative context in order to make such criteria precise, but different investigative contexts yield inconsistent results. I examine questions of existence about spacetime structures other than the spacetime manifold itself to argue that it is more fruitful to focus on pragmatic issues of physicality, a notion that lends itself to several different explications, all of philosophical interest, none privileged a priori over any of the others. I conclude by suggesting an extension of the lessons of my arguments to the broader debate between realists and instrumentalists. 1 Introduction2 The Hole Argument3 Limits of Spacetimes4 Pointless Constructions5 The Debate between Substantivalists and Relationalists6 Existence and Physicality: An Embarassment of Spacetime Structures7 Valedictory Remarks on Realism and Instrumentalism, and the Structure of Our Knowledge of Physics. (shrink)

Reseña del libro Ciencia y política en Karl Popper. Más nueve ensayos sobre otros temas de su obra. Blanca Inés Prada Márquez (2018). Windmills Editions. 366 pp.

I argue that, contrary to the recent claims of physicists and philosophers of physics, general relativity requires no interpretation in any substantive sense of the term. I canvass the common reasons given in favor of the alleged need for an interpretation, including the difficulty in coming to grips with the physical significance of diffeomorphism invariance and of singular structure, and the problems faced in the search for a theory of quantum gravity. I find that none of them shows any defect (...) in our comprehension of general relativity as a physical theory. I conclude by comparing general relativity with quantum mechanics, a theory that manifestly does stand in need of an interpretation in an important sense. Although many aspects of the conceptual structure of general relativity remain poorly understood, it suffers no incoherence in its formulation as a physical theory that only an ‘interpretation’ could resolve. *Received November 2007; revised February 2009. †To contact the author, please write to: Center for Philosophy of Science, University of Pittsburgh, 817 Cathedral of Learning, Pittsburgh, PA 15260; e‐mail: [email protected] . When science starts to be interpretive it is more unscientific even than mysticism. (D. H. Lawrence, “Self‐Protection”). (shrink)

Metacognition is the capacity to evaluate the success of one's own cognitive processes in various domains; for example, memory and perception. It remains controversial whether metacognition relies on a domain-general resource that is applied to different tasks or if self-evaluative processes are domain specific. Here, we investigated this issue directly by examining the neural substrates engaged when metacognitive judgments were made by human participants of both sexes during perceptual and memory tasks matched for stimulus and performance characteristics. By comparing patterns (...) of fMRI activity while subjects evaluated their performance, we revealed both domain-specific and domain-general metacognitive representations. Multivoxel activity patterns in anterior prefrontal cortex predicted levels of confidence in a domain-specific fashion, whereas domain-general signals predicting confidence and accuracy were found in a widespread network in the frontal and posterior midline. The demonstration of domain-specific metacognitive representations suggests the presence of a content-rich mechanism available to introspection and cognitive control. (shrink)

Resumen En este trabajo se estudia la función del cuerpo humano y su relación con la cultura en la Filosofía de formas simbólicas de Ernst Cassirer. Según el neokantiano, la relación cuerpo-alma conforma la relación básica para el desarrollo de la “Fenomenología del conocimiento”, sin embargo, a través del proceso dialéctico es necesario negar la forma material para lograr la forma espiritual de la cultura por lo que la organicidad corporal, al parecer, debe anularse en esta progresión dialéctica. El objetivo (...) es analizar y describir cómo la forma del cuerpo fundamenta el escenario mítico expresivo, pero también la fase representativa del lenguaje y la significativa de la ciencia, permitiendo la unidad en todo el proceso de la construcción del conocimiento y la forma de la cultura.In this paper is studied the function of human body and its relation with the culture, in Ernst Cassirer’s “Philosophy of Symbolic Forms”. According to the neokantian, the relation soul-body conforms the basic relation to develop the Phenomenology of knowledge, nevertheless through the dialectic process is necessary to deny the material form to achieve the spiritual form of the culture, so the organic form, apparently, needs to be annulled in this dialectic progression. The aim is to analyze, and describe, how the form of the body appear in expressive mythical stage, but also in representative stage of language and significative stage of science, allowing the unity in the entire process of the construction of knowledge and the form of culture. (shrink)

Este documento profundiza en la propuesta de solución sobre el conocimiento del singular desarrollado por Ernst Cassirer. El problema plantea que la relación entre lo particular y lo general se concibe ya en los primeros estudios del autor hasta cristalizar en su propuesta de intercambiar los conceptos sustantivos por conceptos funcionales. Este intercambio metodológico permitirá al neokantiano fundamentar, eventualmente, la Philosophie der Symbolischen Formen como cosmovisión que concibe a la cultura como criterio universal de sentido de todas las acciones del (...) ser humano y al símbolo como unidad funcional armónica entre el singular y el universal. (shrink)

Aflicción no es un término que mencione Nietzsche a propósito del hombre moderno, sin embargo, y ésta es la tesis que se intenta demostrar, esta palabra responde a la manera en la que actúa el moderno en relación a su «voluntad de poder», es decir, ante el carácter propenso a dominar que para Nietzsche se manifiesta en todas las funciones básicas de lo vivo. Es el modo o los caminos por los que el moderno ha buscado dominar, lo que da (...) muestra de su congoja ante su «voluntad de poder».Nietzsche plantea que la única realidad a la que tenemos acceso es a la de nuestra vida instintiva. Es decir, que la única expresión de la vida de la que nosotros tenemos cierto tipo de experiencia «directa»1 es la de nuestro mundo de apetitos y pasiones. Ahora bien, ¿cómo explicar nuestra vida instintiva? Pues mediante una tesis que la designe y defina desde su carácter inteligible, a saber, la «voluntad de poder». Por lo tanto, la «voluntad de poder» no define a la vida entendida como otra realidad externa a nosotros, sino que designa el carácter de la única expresión de la vida a la que tenemos acceso directo, esto es, de nuestro mundo de apetitos y pasiones. En este sentido el hombre es un conglomerado de voluntades de poder y el cuerpo es un conjunto de centros vitales que luchan entre sí. (shrink)

La imagen del jorobado que aparece aquí y allá en el corpus benjaminiano, una imagen que el mismo Benjamin califica como el prototipo de la distorsión es también el prototipo del sujeto necesitado de perdón. Una lectura crítica de los lugares en los que Benjamin refiere a esta “imagen distorsionada” ofrece la posibilidad de levantar una teoría del perdón que no reduce el perdón a una forma jurídica, a una particular dinámica emocional, o a un intercambio de condiciones morales, sino (...) que la dota además de una clara dimensión corporal que está simplemente ausente en la mayoría de las consideraciones a propósito del perdón desarrolladas en el siglo XX. (shrink)

General relativity poses serious problems for counterfactual propositions peculiar to it as a physical theory. Because these problems arise solely from the dynamical nature of spacetime geometry, they are shared by all schools of thought on how counterfactuals should be interpreted and understood. Given the role of counterfactuals in the characterization of, inter alia, many accounts of scientific laws, theory confirmation and causation, general relativity once again presents us with idiosyncratic puzzles any attempt to analyze and understand the nature of (...) scientific knowledge must face. (shrink)

Studying the neural correlates of conscious awareness depends on a reliable comparison between activations associated with awareness and unawareness. One particularly difficult confound to remove is task performance capacity, i.e. the difference in performance between the conditions of interest. While ideally task performance capacity should be matched across different conditions, this is difficult to achieve experimentally. However, differences in performance could theoretically be corrected for mathematically. One such proposal is found in a recent paper by Lamy, Salti and Bar-Haim [Lamy (...) D, Salti M, Bar-Haim Y. Neural correlates of subjective awareness and unconscious processing: an ERP study. J Cognitive Neurosci 2009,21:1435-46], who put forward a corrective method for an electroencephalography experiment. We argue that their analysis is essentially grounded in a version of High Threshold Theory, which has been shown to be inferior in general to Signal Detection Theory. We show through a series of computer simulations that their correction method only partially removes the influence of perfor- mance capacity, which can yield misleading results. We present a mathematical correction method based on Signal Detection Theory that is theoretically capable of removing performance capacity confounds. We discuss the limitations of mathemati- cally correcting for performance capacity confounds in imaging studies and its impact for theories about consciousness. (shrink)

In the early 1970s it is was realized that there is a striking formal analogy between the Laws of black-hole mechanics and the Laws of classical thermodynamics. Before the discovery of Hawking radiation, however, it was generally thought that the analogy was only formal, and did not reflect a deep connection between gravitational and thermodynamical phenomena. It is still commonly held that the surface gravity of a stationary black hole can be construed as a true physical temperature and its area (...) as a true entropy only when quantum effects are taken into account; in the context of classical general relativity alone, one cannot cogently construe them so. Does the use of quantum field theory in curved spacetime offer the only hope for taking the analogy seriously? I think the answer is `no'. To attempt to justify that answer, I shall begin by arguing that the standard argument to the contrary is not physically well founded, and in any event begs the question. Looking at the various ways that the ideas of ``temperature'' and ``entropy'' enter classical thermodynamics then will suggest arguments that, I claim, show the analogy between classical black-hole mechanics and classical thermodynamics should be taken more seriously, without the need to rely on or invoke quantum mechanics. In particular, I construct an analogue of a Carnot cycle in which a black hole ``couples'' with an ordinary thermodynamical system in such a way that its surface gravity plays the role of temperature and its area that of entropy. Thus, the connection between classical general relativity and classical thermodynamics on their own is already deep and physically significant, independent of quantum mechanics. (shrink)

Implementing corporate social responsibility (CSR) in supply chains is not a trivial task. In fact, many firms in recent years have publicly proclaimed that in order to keep their CSR commitments, they had to reduce reliance on external suppliers by vertically integrating their operations. Our aim in this article is to examine whether there is truly a relationship between a firm’s CSR performance and its level of vertical integration. Drawing on a multi-industry sample of 2,715 firm-year observations, and after addressing (...) endogeneity concerns, we demonstrate that firms with higher CSR performance tend to vertically integrate more (or, outsource less). We also demonstrate that this tendency is weaker for firms that have higher degrees of asset specificity or international diversification. Our core conclusion is that CSR performance and outsourcing are at odds, but firms can reconcile this tension by deepening their collaborations with suppliers. (shrink)

I argue that an adequate semantics for physical theories must be grounded on an account of the way that a theory provides formal and conceptual resources appropriate for---that have propriety in---the construction of representations of the physical systems the theory purports to treat. I sketch a precise, rigorous definition of the required forms of propriety, and argue that semantic content accrues to scientific representations of physical systems primarily in virtue of the propriety of its resources. In particular, neither the adequacy (...) of those representations nor any referential relations their terms may enter into play any fundamental role in the determination of the representation's semantic content. One consequence is that anything like traditional Tarskian semantics is inadequate for the task. (shrink)