Michael A. PetersBeijing Normal University, Beijing, PR China;There is an ecology of bad ideas, just as there is an ecology of weeds– Gregory Bateson (1972, p. 492)While there are classical anteced...

This dialogue (trilogue) is an attempt to critically discuss the technoscientific convergence that is taking place with biodigital technologies in the postdigital condition. In this discussion, Sarah Hayes, Petar Jandrić and Michael A. Peters examine the nature of the convergences, their applications for bioeconomic sustainability and associated ecopedagogies. The dialogue paper raises issues of definition and places the technological convergence (‘nano-bio-info-cogno’) – of new systems biology and digital technologies at the nano level – in an evolutionary context to (...) speculate, on the basis of the latest research, future possibilities. The paper also reviews these developments within familiar landscapes of posthumanism and postmodernism, raises the question of political bioeconomy and the role of postdigital education within it. (shrink)

University education is full of promise. Indeed universities have the capacity to create and shape, through staff and students, all kinds of enthralling ‘worlds’ and ‘new possibilities of life’. Yet students are encouraged increasingly to view universities as simply a means to an end, where neoliberal education delivers flexible skills to directly serve a certain type of capitalism. Additionally, the universal challenge of technological unemployment, alongside numerous other social issues, has become educationalised and portrayed in HE policy, as an issue (...) to be solved by universities. The idea that more education can resolve the problem of technological unemployment is a political construction which has largely failed to deliver its promise. In this article, we look at educationalisation in hand with technologisation and we draw on a Critical Discourse Analysis of HE policies, to demonstrate the problems arising from taken for granted visions of neoliberal social development related to education,... (shrink)

"This volume on a provocative set of topics presents papers from the 1997 conference on Religion and Sexuality at Roehampton Institute London. The papers do not confine themselves to contemporary discussion of the topics concerned, but range widely in their discourse and discuss this relationship in social, theological and political contexts."--Bloomsbury Publishing.

This paper explores relationships between environment and education after the Covid-19 pandemic through the lens of philosophy of education in a new key developed by Michael Peters and the Philosophy of Education Society of Australasia. The paper is collectively written by 15 authors who responded to the question: Who remembers Greta Thunberg? Their answers are classified into four main themes and corresponding sections. The first section, ‘As we bake the earth, let's try and bake it from scratch’, gathers wider (...) philosophical considerations about the intersection between environment, education, and the pandemic. The second section, ‘Bump in the road or a catalyst for structural change?’, looks more closely into issues pertaining to education. The third section, ‘If you choose to fail us, we will never forgive you’, focuses to Greta Thunberg’s messages and their responses. The last section, ‘Towards a new normal’, explores future scenarios and develops recommendations for critical emancipatory action. The concluding part brings these insights together, showing that resulting synergy between the answers offers much more then the sum of articles’ parts. With its ethos of collectivity, interconnectedness, and solidarity, philosophy of education in a new key is a crucial tool for development of post-pandemic education. (shrink)

The U.S. Food and Drug Administration's drug advisory committees provide expert assessments of the safety and efficacy of new therapies considered for approval. A committee hears from a variety of speakers, from six groups, including voting members of the committee, FDA staff members, employees of the pharmaceutical company seeking approval of a therapy, patient and consumer representatives, expert speakers invited by the company, and public participants. The committees convene at the request of the FDA when the risks and harms of (...) novel products are not immediately clear, and their final decisions carry significant weight, as most therapies that receive advisory committee approval are subsequently approved by the FDA. In recent years, across a series of diverse publications, the financial conflicts of interest of each category of participants in the meetings have been investigated. Here, we summarize these findings and their ethical implications, focusing on the FDA Oncologic Drugs Advisory Committee, and we suggest ways to move toward more transparent and impartial advisory committee meetings. (shrink)

In De Caelo III 2, Aristotle observes that each element is determined by an intrinsic principle to move to its proper place: earth downward, fire upward, and water and air to their respective places in the middle. However, how are we to determine the cause of elemental motion? Aristotle admits that this ranks among the most difficult problems (μάλιστα δ’ ἀπορεῖται) as it is directly related to the argument of Physics VIII 4, which defends the view that whatever is in (...) motion is moved by something. The question of how the elements move is not resolved until we are presented with his definition of inclination (ῥοπή) in De Caelo IV 1. Inclination is the nature of each element to move to its proper place. Aristotle concludes that the principle of inclination is a cause of motion continuously orienting the elements toward their proper places by activating that which is potentially heavy or potentially light. In what follows, I shall demonstrate the internal coherence of Aristotle’s natural philosophy by deploying inclination as a principle of motion and rest to define the nature of each element. This account of inclination as a principle of motion is consistent with Aristotle’s definition of nature in Physics II 1. As an active principle of motion, inclination is identified with the activity (ἐνέργεια) of the element enacting and maintaining its own end (ἐντελέχεια) by being at rest in its proper place. As a passive principle of motion, inclination is identified with the passivity of the element to be moved to its proper place by another element insofar as the respective element undergoes generation or substantial change. (shrink)

Michael Hayes makes a wide ranging journey through religious experience, astrophysics, spiritualism, molecular biology, quantum physics and history.

Throughout the tradition of Aristotelian commentary, there is a common tendency to present a static conception of substance according to the persistence of form imposed upon matter. In this essay, I present a dynamic conception of substance beginning with an account of the striving movement of the soul in De Anima. I argue that the paradigm for Aristotle’s definition of substance as actuality (entelecheia) is necessarily determined by his account of desire (orexis) as an efficient cause of the soul. The (...) striving movement of desire as an efficient cause fulfills a holistic function by providing a teleological unity to the various capacities of the soul. (shrink)

In the introduction to her book, Praxis und Logos bei Aristoteles, Friederike Rese rightfully bemoans a common prejudice within the secondary literature that mistakenly attempts to identify Plato, the so-called ‘idealist’, as the philosopher of λόγος and Aristotle, the so-called ‘realist’, as the philosopher of πρᾶξις. This traditional distinction between the philosophical life devoted to the pursuit of λόγος and the political life devoted to the pursuit of πρᾶξις as mutually exclusive forms of human activity also manifests itself as a (...) double tendency within Aristotelian scholarship: either to situate the theoretical philosophy above the practical philosophy, or to simply invert the hierarchy by emphasizing the practical over and against the theoretical. Both tendencies in their false play of oppositions generally fail to consider the comprehensive unity of both λόγος and πρᾶξις within Aristotle’s philosophy as a whole. By bringing into question some of these highly problematic divisions separating Aristotle’s theoretical philosophy from his practical philosophy, Rese aims to rehabilitate and recover the genuine transformation of λόγος within Aristotle in order to ultimately reveal its primordial unity with πρᾶξις. Rese’s aim is nothing less than to restore to Aristotle his rightful claim as the philosopher of λόγος: “If it was Aristotle who first described λόγος as the action of both reason and speech, then Aristotle was also the first who gave the concept of πρᾶξις its status as a philosophical term”. What really distinguishes Rese’s work from other works regarding the subject is the ingenuity of her central thesis, which focuses on the capacity of λόγος as a form of reason and speech to be responsible for both the determinacy and indeterminacy of human life and action. As a form of reason, λόγος establishes limits between determined and undetermined possibilities of action insofar as every determination of πρᾶξις must necessarily take into account those undetermined possibilities produced by λόγος. Rese’s thesis incorporates the principle of non-contradiction in Aristotle’s Metaphysics by designating λόγος as the limit of reason that orients a human being towards opposing possibilities of action. As a form of speech or saying, λόγος literally functions as the actualization of Aristotle’s principle of non-contradiction: “The same thing cannot at the same time both belong and not belong to the same object and in the same respect”. Every saying and deliberating of something is at the same time a delimitation of something from something else. Therefore, saying something is merely the performative aspect of deliberation which externalizes itself in the moment of decision determining the action. Because λόγος can produce a multiplicity of possibilities for any given action, the capacity of λόγος to exclusively determine an action separates human life from the indeterminacy of animal life. “While the possession of λόγος distinguishes the human being from all other life-forms, the activity of λόγος is also the actualization of life by arriving at the determining relation that characterizes the human being”. (shrink)

ObjectiveBulimia nervosa and binge eating disorder are eating disorders characterized by recurrent binge eating episodes. Overlap exists between ED diagnostic groups, with BE episodes presenting one clinical feature that occurs transdiagnostically. Neuroimaging of the responses of those with BN and BED to disorder-specific stimuli, such as food, is not extensively investigated. Furthermore, to our knowledge, there have been no previous published studies examining the neural response of individuals currently experiencing binge eating, to low energy foods. Our objective was to examine (...) the neural responses to both low energy and high energy food images in three emotive categories in BN and BED participants.MethodsNineteen females with BN or BED, comprising the binge eating group, and 19 age-matched healthy control ’s completed thorough clinical assessment prior to functional MRI. Neural response to low energy and high energy foods and non-food images was compared between groups using whole-brain exploratory analyses, from which six regions of interest were then selected: frontal, occipital, temporal, and parietal lobes; insula and cingulate.ResultsIn response to low energy food images, the BEG demonstrated differential neural responses to all three low energy foods categories compared to HCs. Correlational analyses found a significant association between frequency of binge episodes and diminished temporal lobe and greater occipital lobe response. In response to high energy food images, compared to HC’s, the BEG demonstrated significantly decreased neural activity in response to all high energy food images. The HC’s had significantly greater neural activity in the limbic system, occipital lobe, temporal lobe, frontal lobe, and limbic system in response to high energy food images.ConclusionResults in the low energy food condition indicate that binge frequency may be related to increased aberrant neural responding. Furthermore, differences were found between groups in all ROI’s except the insula. The neural response seen in the BEG to disgust food images may indicate disengagement with this particular stimuli. In the high energy food condition, results demonstrate that neural activity in BN and BED patients may decrease in response to high energy foods, suggesting disengagement with foods that may be more consistent with those consumed during a binge eating episode. (shrink)

This chapter discusses the features of a hybrid expressivist view that has the resources to straightforwardly address issues about logical embedding and the connection between moral judgment and motivation. Following Mark Schroeder’s work in assessing the merits of current hybrid views and proposals made by Dan Boisvert, Michael Ridge, and David Copp, it briefly reviews why the hybrid expressivist may be optimistic about “having it both ways.” However, it argues that the current set of assumptions that lead to optimism (...) also lead to a kind of entangling problem. This arises from assumptions about the generalized structure of the mental states associated with moral thought and language. In response it proposes that agents can possess generalized noncognitive attitudes toward types rather than propositions involving universals. The chapter suggests that this modified hybrid expressivism can explain the connection between morality and motivation without being committed to the strongest forms of internalism. (shrink)

It is true for many disciplines within the humanities that there are numerous excellent works that introduce the beginner to the basic building blocks of the discipline, and also many advanced studies for the accomplished scholar, but few works that help the student get from the beginning stage to the advanced level. That has certainly been true of the discipline of Sanskrit. Once a student has devoted a couple of years to working through one of the excellent introductions to the (...) language by Ashok Aklujkar, Michael Coulson, Madhav Deshpande, Robert Goldman, or Walter Maurer, there have been hardly any intermediate texts to help the student systematically progress to more advanced levels. Now, however, with the publication of Scholastic Sanskrit, an important step has been taken toward filling that lacuna. This book assumes that the student has learned enough about Sanskrit grammar and syntax to be ready to begin plunging into the vast corpus comprising the many genres of Sanskrit literature. It is built on the conviction that even a student at the early stages of exploring Sanskrit literature can benefit from the work of traditional commentators; it is also built on the observation that until now there have not been reliable guides to help the student make intelligent use of Sanskrit commentaries. (shrink)

In a series of works published over a period of twenty five years, C.W. Huntington, Jr. has developed a provocative and radical reading of Madhyamaka inspired by ‘the insights of post- Wittgensteinian pragmatism and deconstruction’. This article examines the body of Huntington’s work through the filter of his seminal 2007 publication, ‘The Nature of the M?dhyamika Trick’, a polemic aimed at a quartet of other recent commentators on Madhyamaka who attempt ‘to read N?g?rjuna through the lens of modern symbolic logic’, (...) a project which is the ‘end result of a long and complex scholastic enterprise … [which] can be traced backwards from contemporary academic discourse to fifteenth century Tibet, and from there into India’ and which Huntington sees as distorting the Madhyamaka project which was not aimed at ‘command[ing] assent to a set of rationally grounded doctrines, tenets, or true conclusions’. This article begins by explicating some disparate strands found in Huntington’s work, which I connect under a radicalized notion of ‘context’. These strands consist of a contextualist/pragmatic theory of truth, a contextualist epistemology, and a contextualist ontology where entities are viewed as necessarily relational I then use these linked theories to find fault with Huntington’s own readings of Candrak?rti and N?g?rjuna, arguing that Huntington misreads the semantic context of certain key terms and fails to follow the implications of N?g?rjuna and Candrak?rti’s reliance on the role of the pram??as in constituting conventional reality. Thus, I find that Huntington’s imputation of a rejection of logic and rational argumentation to N?g?rjuna and Candrak?rti is unwarranted. Finally, I offer alternate readings of the four contemporary commentators selected by Huntington, using the conceptual apparatus developed earlier to dismiss Robinson’s and Hayes’s view of N?g?rjuna as a charlatan relying on logical fallacies, and to find common ground between Huntington’s project and the view of N?g?rjuna developed by Tillemans and Garfield as a thinker committed using reason to reach, through rational analysis, ‘the limits of thought.’. (shrink)

The present article contains a defense of the thesis that definite descriptions can have referential meanings that include a descriptive component from the following objections contained in the preceding articles: the idea that the thesis at stake cannot adequately account for cases of misdescriptions, the claim that referential descriptions should be considered to be purely referential, with no descriptive meaning component whatsoever, and the alleged viability of a pragmatic approach according to which definite descriptions do not have referential meanings but (...) can only be referentially used. As far as is concerned, it is argued that misdescriptions can be clearly accounted for in pragmatic terms. Against, it is pointed out that sentences of the form 'The/an F is not F' have a contradictory status -they are taken to be contradictory even when the descriptions involved have referential meanings. Finally, regarding, it is argued that, in defending a very audience-directed stance, Caso confuses the epistemic and constitutive dimensions of reference determination, and as a consequence he is committed to an extreme form of linguistic pragmatism according to which the meaning of an expression is constitutively determined by the way in which hearers interpret utterances. El presente artículo contiene una defensa de la tesis según la cual las descripciones definidas pueden tener significados referenciales que incluyen un componente descriptivo frente a las siguientes objeciones contenidas en los artículos precedentes: la idea según la cual la tesis en cuestión no explica adecuadamente los casos de descripciones fallidas, la tesis de que no hay razones para creer que los significados referenciales de las descripciones incluyan un componente descriptivo, y la supuesta viabilidad de una perspectiva pragmática, desde la cual se considera que las descripciones no tienen significados referenciales sino que pueden ser usadas referencialmente. En relación con, se sostiene que las descripciones fallidas pueden ser claramente explicadas en términos pragmáticos. Contra, se destaca que las oraciones de la forma 'El/un F no es F' tienen un carácter contradictorio -se considera que son contradictorias aun en los casos en los que las descripciones involucradas tienen significados referenciales. Finalmente, contra, se argumenta que, al defender un acercamiento muy orientado hacia la audiencia, Caso confunde la dimensión epistémica de la determinación de la referencia con su dimensión constitutiva y, en consecuencia, resulta comprometido con una forma extrema de pragmatismo lingüístico según la cual el significado de una expresión se encuentra constitutivamente determinado por la manera en que los hablantes interpretan las emisiones. (shrink)

La pregunta por la naturaleza de las relaciones es de gran importancia en los escritos tempranos de Bentrand Russell, ya que sus desacuerdos con el idealismo británico se centraban en las relaciones, y su filosofía de las matemáticas depende crucialmente de las relaciones. A pesar de esto, no hay una discusión sistemática y extendida sobre las relaciones en el Russell temprano. Después de examinar la definición de relación de Russell, el autor examina crítica y sistemáticamente los puntos de vista de (...) Russell en los Principia Mathematica sobre los siguientes problemas: si una relación existe aparte de sus términos; el carácter intensional de las relaciones; las dificultades en las relaciones reflexivas; y si las relaciones simples pueden relacionar más de dos relatos. (shrink)

La ética evolutiva tiene (merecidamente) mala reputación. Sin embargo, no deberíamos permanecer prisioneros de nuestro pasado. Los avances recientes en biología evolutiva darwiniana allanan el camino para un vínculo entre ciencia y moral que es más modesto pero, al mismo tiempo, más profundo que las excursiones anteriores en esta dirección. Al mismo tiempo, no hay necesidad de repudiar las ideas de los grandes filósofos del pasado, particularmente de David Hume. De ahí que los orígenes simiescos de los seres humanos realmente (...) importan. La pregunta no es si acaso la evolución debería relacionarse con la ética, sino cómo. Nosotros los seres humanos somos monos modificados, no la creación favorecida de un Dios benévolo, en el sexto día. Por lo tanto, ha llegado el momento de hacernos cargo de nuestra naturaleza animal, particularmente en relación con nuestra interacción con los demás. Es cierto que la llamada ética evolutiva tiene mala reputación. Sin embargo, la pregunta no es si la evolución está conectada con la ética, sino cómo. Afortunadamente, gracias a los avances recientes en las ciencias biológicas, el camino se está volviendo más claro. Comienzo esta discusión con una breve introducción histórica al tema. Luego voy al núcleo de mi caso científico y filosófico. Concluyo retomando algunas objeciones centrales. (shrink)

In this book, Michael Arbib, a researcher in artificial intelligence and brain theory, joins forces with Mary Hesse, a philosopher of science, to present an integrated account of how humans 'construct' reality through interaction with the social and physical world around them. The book is a major expansion of the Gifford Lectures delivered by the authors at the University of Edinburgh in the autumn of 1983. The authors reconcile a theory of the individual's construction of reality as a network (...) of schemas 'in the head' with an account of the social construction of language, science, ideology and religion to provide an integrated schema-theoretic view of human knowledge. The authors still find scope for lively debate, particularly in their discussion of free will and of the reality of God. The book integrates an accessible exposition of background information with a cumulative marshalling of evidence to address fundamental questions concerning human action in the world and the nature of ultimate reality. (shrink)

Bishop and Trout here present a unique and provocative new approach to epistemology. Their approach aims to liberate epistemology from the scholastic debates of standard analytic epistemology, and treat it as a branch of the philosophy of science. The approach is novel in its use of cost-benefit analysis to guide people facing real reasoning problems and in its framework for resolving normative disputes in psychology. Based on empirical data, Bishop and Trout show how people can improve their reasoning by relying (...) on Statistical Prediction Rules. They then develop and articulate the positive core of the book. Their view, Strategic Reliabilism, claims that epistemic excellence consists in the efficient allocation of cognitive resources to reliable reasoning strategies, applied to significant problems. The last third of the book develops the implications of this view for standard analytic epistemology; for resolving normative disputes in psychology; and for offering practical, concrete advice on how this theory can improve real people's reasoning. This is a truly distinctive and controversial work that spans many disciplines and will speak to an unusually diverse group, including people in epistemology, philosophy of science, decision theory, cognitive and clinical psychology, and ethics and public policy. (shrink)

Science and philosophy study well-being with different but complementary methods. Marry these methods and a new picture emerges: To have well-being is to be "stuck" in a positive cycle of emotions, attitudes, traits and success. This book unites the scientific and philosophical worldviews into a powerful new theory of well-being.

The article analyzes the neural and functional grounding of language skills as well as their emergence in hominid evolution, hypothesizing stages leading from abilities known to exist in monkeys and apes and presumed to exist in our hominid ancestors right through to modern spoken and signed languages. The starting point is the observation that both premotor area F5 in monkeys and Broca's area in humans contain a “mirror system” active for both execution and observation of manual actions, and that F5 (...) and Broca's area are homologous brain regions. This grounded the mirror system hypothesis of Rizzolatti and Arbib (1998) which offers the mirror system for grasping as a key neural “missing link” between the abilities of our nonhuman ancestors of 20 million years ago and modern human language, with manual gestures rather than a system for vocal communication providing the initial seed for this evolutionary process. The present article, however, goes “beyond the mirror” to offer hypotheses on evolutionary changes within and outside the mirror systems which may have occurred to equip Homo sapiens with a language-ready brain. Crucial to the early stages of this progression is the mirror system for grasping and its extension to permit imitation. Imitation is seen as evolving via a so-called simple system such as that found in chimpanzees (which allows imitation of complex “object-oriented” sequences but only as the result of extensive practice) to a so-called complex system found in humans (which allows rapid imitation even of complex sequences, under appropriate conditions) which supports pantomime. This is hypothesized to have provided the substrate for the development of protosign, a combinatorially open repertoire of manual gestures, which then provides the scaffolding for the emergence of protospeech (which thus owes little to nonhuman vocalizations), with protosign and protospeech then developing in an expanding spiral. It is argued that these stages involve biological evolution of both brain and body. By contrast, it is argued that the progression from protosign and protospeech to languages with full-blown syntax and compositional semantics was a historical phenomenon in the development of Homo sapiens, involving few if any further biological changes. Key Words: gestures; hominids; language evolution; mirror system; neurolinguistics; primates; protolanguage; sign language; speech; vocalization. (shrink)

Here, we argue that any neurobiological theory based on an experience/function division cannot be empirically confirmed or falsified and is thus outside the scope of science. A ‘perfect experiment’ illustrates this point, highlighting the unbreachable boundaries of the scientific study of consciousness. We describe a more nuanced notion of cognitive access that captures personal experience without positing the existence of inaccessible conscious states. Finally, we discuss the criteria necessary for forming and testing a falsifiable theory of consciousness.

Choice Outstanding Academic Title, 1996. In hundreds of articles by experts from around the world, and in overviews and "road maps" prepared by the editor, The Handbook of Brain Theory and Neural Networkscharts the immense progress made in recent years in many specific areas related to two great questions: How does the brain work? and How can we build intelligent machines? While many books have appeared on limited aspects of one subfield or another of brain theory and neural networks, the (...) Handbookcovers the entire sweep of topics—from detailed models of single neurons, analyses of a wide variety of biological neural networks, and connectionist studies of psychology and language, to mathematical analyses of a variety of abstract neural networks, and technological applications of adaptive, artificial neural networks. The excitement, and the frustration, of these topics is that they span such a broad range of disciplines including mathematics, statistical physics and chemistry, neurology and neurobiology, and computer science and electrical engineering as well as cognitive psychology, artificial intelligence, and philosophy. Thus, much effort has gone into making the Handbookaccessible to readers with varied backgrounds while still providing a clear view of much of the recent, specialized research in specific topics. The heart of the book, part III, comprises of 267 original articles by leaders in the various fields, arranged alphabetically by title. Parts I and II, written by the editor, are designed to help readers orient themselves to this vast range of material. Part I, Background, introduces several basic neural models, explains how the present study of brain theory and neural networks integrates brain theory, artificial intelligence, and cognitive psychology, and provides a tutorial on the concepts essential for understanding neural networks as dynamic, adaptive systems. Part II, Road Maps, provides entry into the many articles of part III through an introductory "Meta-Map" and twenty-three road maps, each of which tours all the Part III articles on the chosen theme. (shrink)

Choice Outstanding Academic Title, 1996. In hundreds of articles by experts from around the world, and in overviews and "road maps" prepared by the editor, The Handbook of Brain Theory and Neural Networks charts the immense progress made in recent years in many specific areas related to great questions: How does the brain work? How can we build intelligent machines? While many books discuss limited aspects of one subfield or another of brain theory and neural networks, the Handbook covers the (...) entire sweep of topics—from detailed models of single neurons, analyses of a wide variety of biological neural networks, and connectionist studies of psychology and language, to mathematical analyses of a variety of abstract neural networks, and technological applications of adaptive, artificial neural networks. Expository material makes the book accessible to readers with varied backgrounds while still offering a clear view of the recent, specialized research on specific topics. (shrink)

Cognitive Science, Volume 46, Issue 10, October 2022.

Although our subjective impression is of a richly detailed visual world, numerous empirical results suggest that the amount of visual information observers can perceive and remember at any given moment is limited. How can our subjective impressions be reconciled with these objective observations? Here, we answer this question by arguing that, although we see more than the handful of objects, claimed by prominent models of visual attention and working memory, we still see far less than we think we do. Taken (...) together, we argue that these considerations resolve the apparent conflict between our subjective impressions and empirical data on visual capacity, while also illuminating the nature of the representations underlying perceptual experience. (shrink)

Are thought experiments nothing but arguments? I argue that it is not possible to make sense of the historical trajectory of certain thought experiments if one takes them to be arguments. Einstein and Bohr disagreed about the outcome of the clock-in-the-box thought experiment, and so they reconstructed it using different arguments. This is to be expected whenever scientists disagree about a thought experiment's outcome. Since any such episode consists of two arguments but just one thought experiment, the thought experiment cannot (...) be the arguments. (shrink)

Intermediate constructs are required as bridges between complex behaviors and realistic models of neural circuitry. For cognitive scientists in general, schemas are the appropriate functional units; brain theorists can work with neural layers as units intermediate between structures subserving schemas and small neural circuits.After an account of different levels of analysis, we describe visuomotor coordination in terms of perceptual schemas and motor schemas. The interest of schemas to cognitive science in general is illustrated with the example of perceptual schemas in (...) high-level vision and motor schemas in the control of dextrous hands.Rana computatrix, the computational frog, is introduced to show how one constructs an evolving set of model families to mediate flexible cooperation between theory and experiment. Rana computatrix may be able to do for the study of the organizational principles of neural circuitry what Aplysia has done for the study of subcellular mechanisms of learning. Approach, avoidance, and detour behavior in frogs and toads are analyzed in terms of interacting schemas. Facilitation and prey recognition are implemented as tectal-pretectal interactions, with the tectum modeled by an array of tectal columns. We show how layered neural computation enters into models of stereopsis and how depth schemas may involve the interaction of accommodation and binocular cues in anurans. (shrink)

The generality problem is widely considered to be a devastating objection to reliabilist theories of justification. My goal in this paper is to argue that a version of the generality problem applies to all plausible theories of justification. Assume that any plausible theory must allow for the possibility of reflective justification—S's belief, B, is justified on the basis of S's knowledge that she arrived at B as a result of a highly (but not perfectly) reliable way of reasoning, R. The (...) generality problem applies to all cases of reflective justification: Given that is the product of a process-token that is an instance of indefinitely many belief-forming process-types (or BFPTs), why is the reliability of R, rather than the reliability of one of the indefinitely many other BFPTs, relevant to B's justificatory status? This form of the generality problem is restricted because it applies only to cases of reflective justification. But unless it is solved, the generality problem haunts all plausible theories of justification, not just reliabilist ones. (shrink)

A new, dramatically updated edition of the classic resource on the constantly evolving fields of brain theory and neural networks.