I examine Descartes's theory of cognition, taking as a starting point his account of how misperception is possible. In the Third Meditation Descartes introduces the hypothesis that there are ideas (such as the idea of cold) which seem to be of something real but which in fact represent nothing (if, for example, cold is a privation or absence of heat, rather than the presence of a positive quality). I argue, against Margaret Wilson, that Descartes does not think there are any (...) such ideas and that he introduces the hypothesis only in order to formulate an objection to his argument for the existence of God. I argue further that while he agrees with Arnauld in accepting the Aristotelian account of cognition according to which the very objects in the world that we perceive exist in the soul or its ideas objectively, he still has a satisfactory response to Arnauld's objection that since an idea can represent only what it appears to be of, all error must reside solely in our judgment. I claim that Arnauld's objection that an idea represents what it appears to be of is based on the assumption that an idea appears to be of what exists in it objectively. But Descartes makes room for the possibility of misrepresentation by distinguishing between what exists objectively in an idea and what that idea appears to be of. First, he thinks that it is at least coherent to suppose that an idea lacking objective reality could appear to be of something in virtue of its material reality. Since an idea lacking objective reality would not represent any thing that exists in the world, Descartes concedes that it would not misrepresent any actually existing thing, but it could still appear to be of some thing and in that way misrepresent the way the world is. Second, there is reason to claim that like some of his Aristotelian predecessors Descartes holds that what exists in the soul objectively can appear to be other than it is. This interpretation has the implication that Descartes's theory of ideas, in contrast to sense datum theories, is not driven by the motive of finding some entity which is exactly as it appears to serve as the object of immediate awareness. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Cartesian CompositesPaul HoffmanTowards the end of a paper in which I argued that Descartes thinks a human being is a genuine unity, I invited other commentators to come to Descartes’s defense by accounting for his apparently contradictory claims that a human being is an ens per se and that it is an ens per accidens.1 These claims seem to be contradictory, because in saying that a human being is (...) an ens per se, Descartes appears to be asserting that a human being is genuinely one, and in saying that a human being is an ens per accidens, he appears to assert that a human being is not genuinely one, but instead is a mere heap or aggregate. In the ensuing eleven years no one has taken up my invitation, except to argue that I was mistaken in claiming that Descartes thinks a human being has per se unity in any robust sense.2In this paper I will take up the challenge myself, having noticed a similarity between Descartes’s account of the unity of composite substances and his account of composite figures having true and immutable natures. After showing how he can consistently maintain that a human being is both an ens per se and ens per accidens in roughly the same way he can consistently maintain that composite figures both do and do not have true and immutable natures, I will try to respond to criticisms of my claim that he thinks of a human being as a substance or an ens per se.Let me begin with an analysis and comparison of two passages from the Objections and Replies. In the first, from the Replies to the First Objections, Descartes [End Page 251] discusses composite figures. In the second, from the Replies to the Fourth Objections, Descartes discusses composite substances.Next, to remove the other part of the difficulty, it should be noted that those ideas which do not contain true and immutable natures, but contain only ones which are fictitious and composed by the intellect, can be divided by the same intellect, not only through abstraction, but through a clear and distinct operation, so that any ideas which the intellect cannot so divide were undoubtedly not composed by it. As, for example, when I think of a winged horse, or an actually existing lion, or a triangle inscribed in a square, I easily understand that I can also in opposition think of a horse without wings, a non-existing lion, a triangle without a square, and so on; from which it follows that these do not have true and immutable natures. But if I think of a triangle or a square (I do not speak here of a lion or horse because their natures are not clearly evident to us), then certainly whatever I apprehend as contained in the idea of a triangle, as that its three angles are equal to two right angles, etc., I will truly affirm of the triangle, and of the square whatever is found in the idea of the square. For even if I can understand a triangle, abstracting from the fact that its angles should equal two right angles, I cannot nevertheless deny that of it by a clear and distinct operation, that is, correctly understanding this is what I say. Furthermore, if I consider a triangle inscribed in a square, not in order to attribute to the square those things which pertain only to the triangle or to the triangle those things which pertain to the square, but in order to examine only those things which arise from the conjunction of the two, then its nature will be no less true and immutable than the square or triangle alone, and it will be permitted to affirm that the square is not less than twice the triangle inscribed in it and similar things which pertain to the nature of this composite figure. (AT VII 117–8; CSM II 83–4)3I am not unaware that some substances are commonly called ‘incomplete.’ But if they are said to be incomplete because they cannot exist per se alone, I confess that it seems contradictory to me that... (shrink)

Thomas Reid uses the notion of exertion in various ways that have not been distinguished in the secondary literature. Sometimes he uses it to refer to the exercise of a capacity or power, sometimes to the turning on or activitating of a capacity or power, and still other times to the attempt to activate a capacity or power. Getting clear on Reid's different uses of the term 'exertion' is essential to understanding his account of the sequence of events in human (...) action. It is also helpful in defending Reid against the objection that his account of action is subject to an infinite regress. (shrink)

: Thomas Reid uses the notion of exertion in various ways that have not been distinguished in the secondary literature. Sometimes he uses it to refer to the exercise of a capacity or power, sometimes to the turning on or activitating of a capacity or power, and still other times to the attempt to activate a capacity or power. Getting clear on Reid's different uses of the term 'exertion' is essential to understanding his account of the sequence of events in (...) human action. It is also helpful in defending Reid against the objection that his account of action is subject to an infinite regress. (shrink)

When is war just? What does justice require? If we lack a commonly-accepted understanding of justice – and thus of just war – what answers can we find in the intellectual history of just war? Miller argues that just war thinking should be understood as unfolding in three traditions: the Augustinian, the Westphalian, and the Liberal, each resting on distinct understandings of natural law, justice, and sovereignty. The central ideas of the Augustinian tradition can and should be recovered and worked (...) into the Liberal tradition, for which human rights serves the same function. In this reconstructed Augustinian Liberal vision, the violent disruption of ordered liberty is the injury in response to which force may be used and war may be justly waged. Justice requires the vindication and restoration of ordered liberty in, through, and after warfare. (shrink)

This volume brings together insights from religion (represented by Buddhism and Christianity) and science to address the question, What can we know about ...

In Chapter One I present an interpretation of Descartes' theory of distinction. I argue that the best understanding of the notion of separate existence at stake in the real distinction between mind and body is not that each can exist without the other existing, nor that each can exist without a real union with the other, but that each can exist without the attributes of the other. However, the only notion of separate existence which can provide an adequate acccount of (...) all three kinds of distinction--real, modal, and of reason--is that of one thing existing without a real union with another thing. ;In Chapter Two I examine Descartes' claims about the dependence of created substances on God and their independence from other creatures. The pure substances, those which are not composed of parts, can be caused to come into existence and go out of existence only by God, and they can perish only by annihilation. These substances include individual created minds and the extended universe considered as a whole. In contrast, bodies and human beings, which are composed of parts, can be caused to go out of existence by other creatures, and they can perish without being annihilated. Nevertheless, I argue that Descartes thinks bodies and human beings are full-fledged substances. ;In Chapter Three I discuss the union of mind and body. I argue that Descartes thinks the human soul is the only substantial form and that it inheres in the body as form inheres in matter. I defend his account of how two substances can form a unity by comparing it with medieval accounts of the unity of composites. ;Chapter Four examines Descartes' arguments for rejecting substantial forms and the so-called real qualities. I argue that his earliest series of arguments, those from perception and scientific explanation, is the most successful. ;Finally, in Chapter Five, I consider Descartes' positive account of the status of those so-called real qualities which he asserts are merely sensations, for example, color, sound, and heat. I argue that he is best understood as holding that they are modes of both thought and extension which are property ascribed to the composite of mind and body. (shrink)

« Point de cantique, Tenir le pas gagné. Cependant c’est la veille. Recevons tous les influx de vigueur et de tendresse réelle. Et à l’aurore, armés d’une ardente patience, nous entrerons aux splendides villes. »Gageons que la guerre n’est rien d’autre que l’affrontement, par des moyens violents de groupes politiques et/ou sociaux qui cherchent, par ce biais, à résoudre..

Extant theoretical work on the political resource curse implies that dependence on resource revenues should decrease autocracies’ likelihood of democratizing but not necessarily affect democracies’ chances of survival. Yet most previous empirical studies estimate models that are ill-suited to address this claim. We improve upon earlier studies, estimating a dynamic logit model that interacts a continuous measure of resource dependence with an indicator of regime type using data from 166 countries, covering the period from 1816-2006. We find that an increase (...) in resource dependence at time t - 1 increases the likelihood of autocratic persistence at t, but has no appreciable effect on democratic survival. We go beyond existing empirical studies to show that increases in resource dependence have persistent and substantial cumulative effects on autocracies' likelihood of becoming democratic over the long-term, showing that the total effect of resource dependence on regime type is much larger than the short-term (one period) effect indicates. (shrink)

In Beyond Physicalism, an interdisciplinary group of physical scientists, behavioral and social scientists, and humanists from the Esalen Institute’s Center for Theory and Research argue that physicalism must be replaced by an expanded scientific naturalism that accommodates something spiritual at the heart of nature.

We say that a sentence A is a permissive consequence of a set X of premises whenever, if all the premises of X hold up to some standard, then A holds to some weaker standard. In this paper, we focus on a three-valued version of this notion, which we call strict-to-tolerant consequence, and discuss its fruitfulness toward a unified treatment of the paradoxes of vagueness and self-referential truth. For vagueness, st-consequence supports the principle of tolerance; for truth, it supports the (...) requisite of transparency. Permissive consequence is non-transitive, however, but this feature is argued to be an essential component to the understanding of paradoxical reasoning in cases involving vagueness or self-reference. (shrink)

ObjectivesThe purpose of the current study was to examine whether a self-report measure identifies prenatal substance use and predicts resulting adverse birth outcomes in a large cohort using electronic medical records.MethodsPregnant patients who were admitted between 2014 and 2015 at Christiana Care Health System and delivered singleton birth were included in the analyses. Participant demographic information, pregnancy comorbidities, self-reported substance use, and birth outcomes were retrieved from electronic medical records. Detailed descriptive analyses of prenatal substance use were conducted, and logistic (...) models were evaluated for the associations between substance use and each birth outcome.ResultsThe average maternal age was 30 years, 37% receiving Medicaid. Over 58% were White, 26% were Black, and 13% were Hispanic. Cigarette smoking only showed the highest prevalence among substance u... (shrink)

Paul Ricoeur was one of the foremost interpreters and translators of Edmund Husserl's philosophy. These nine essays present Ricoeur's interpretation of the most important of Husserl's writings, with emphasis on his philosophy of consciousness rather than his work in logic. In Ricoeur's philosophy, phenomenology and existentialism came of age and these essays provide an introduction to the Husserlian elements which most heavily influenced his own philosophical position.

Should a principle of charity be applied to the interpretation of the colour concepts exercised in visual experience? We think not. We shall argue, for one thing, that the grounds for applying a principle of charity are lacking in the case of colour concepts. More importantly, we shall argue that attempts at giving the experience of colour a charitable interpretation either fail to respect obvious features of that experience or fail to interpret it charitably, after all. Charity to visual experience (...) is therefore no motive for resisting the natural, Galilean response to a scientific understanding of light and vision. The best interpretation of colour experience ends up convicting it of widespread and systematic error. (shrink)

This paper proposes an experimental investigation of the use of vague predicates in dynamic sorites. We present the results of two studies in which subjects had to categorize colored squares at the borderline between two color categories (Green vs. Blue, Yellow vs. Orange). Our main aim was to probe for hysteresis in the ordered transitions between the respective colors, namely for the longer persistence of the initial category. Our main finding is a reverse phenomenon of enhanced contrast (i.e. negative hysteresis), (...) present in two different tasks, a comparative task involving two color names, and a yes/no task involving a single color name, but not found in a corresponding color matching task. We propose an optimality-theoretic explanation of this effect in terms of the strict-tolerant framework of Cobreros et al. (J Philos Log 1–39, 2012), in which borderline cases are characterized in a dual manner in terms of overlap between tolerant extensions, and underlap between strict extensions. (shrink)

We present data and argument to show that in Tetris - a real-time interactive video game - certain cognitive and perceptual problems are more quickly, easily, and reliably solved by performing actions in the world rather than by performing computational actions in the head alone. We have found that some translations and rotations are best understood as using the world to improve cognition. These actions are not used to implement a plan, or to implement a reaction; they are used to (...) change the world in order to simplify the problem-solving task. Thus, we distinguish pragmatic actions ñ actions performed to bring one physically closer to a goal - from epistemic actions - actions performed to uncover information that is hidden or hard to compute mentally. To illustrate the need for epistemic actions, we first develop a standard information-processing model of Tetris-cognition, and show that it cannot explain performance data from human players of the game - even when we relax the assumption of fully sequential processing. Standard models disregard many actions taken by players because they appear unmotivated or superfluous. However, we describe many such actions that are actually taken by players that are far from superfluous, and that play valuable roles in improving human performance. We argue that traditional accounts are limited because they regard action as having a single function: to change the world. By recognizing a second function of action - an epistemic function - we can explain many of the actions that a traditional model cannot. Although, our argument is supported by numerous examples specifically from Tetris, we outline how the one category of epistemic action can be incorporated into theories of action more generally. (shrink)

Dieser Buchtitel ist Teil des Digitalisierungsprojekts Springer Book Archives mit Publikationen, die seit den Anfängen des Verlags von 1842 erschienen sind. Der Verlag stellt mit diesem Archiv Quellen für die historische wie auch die disziplingeschichtliche Forschung zur Verfügung, die jeweils im historischen Kontext betrachtet werden müssen. Dieser Titel erschien in der Zeit vor 1945 und wird daher in seiner zeittypischen politisch-ideologischen Ausrichtung vom Verlag nicht beworben.

The Ikhwan al-Safa (Brethren of Purity), the anonymous adepts of a tenth-century esoteric fraternity based in Basra and Baghdad, hold an eminent position in the history of science and philosophy in Islam due to the wide reception and assimilation of their monumental encyclopaedia, the Rasa'il Ikhwan al-Safa (Epistles of the Brethren of Purity). This compendium contains fifty-two epistles offering synoptic accounts of the classical sciences and philosophies of the age; divided into four classificatory parts, it treats themes in mathematics, logic, (...) natural philosophy, psychology, metaphysics, and theology, in addition to didactic fables. Epistles 32 to 36 comprise the first five treatises in the third division of the Rasa'il, on the sciences of the soul and intellect. Combining Islamic revelation with Hellenistic philosophy, the Ikhwan delineate herein their metaphysical system. Epistles 32 and 33 present adaptations of the Pythagorean doctrines, and of Neo-Platonist leitmotifs, whereby a numerical analogy is applied to the unique and transcendent God, or the One, from whom all existence emanates. Epistle 34 takes up the pervasive theme of the correspondence between microcosm and macrocosm, situating the human being as the central link between the celestial and terrestrial realms. In Epistle 35, we find an explanation of the intellectual faculties of the individual human soul, whose ultimate aim is ascension to the timeless reality of pure intellect. Finally, Epistle 36 presents itself as the astrological epistle par excellence of the Rasa'il; from the coming-to-be of worms, to the emergence of religions and empires, nothing in the sub-lunar sphere escapes the determining influence of the celestial cycles. (shrink)

We agree with Shors & Matzel's general hypothesis that the proposed link between NMDA-dependent LTP and memory is weak. They suggest that NMDA-dependent LTP is important to arousal or attentional processes which influence learning in an anterograde manner. However, current evidence is also consistent with the view that NMDA receptors modulate memory consolidation retroactively, as occurs in several other receptor classes.

Die Leitgedanken meiner Untersuchungen über die Grundlagen der Mathematik, die ich - anknüpfend an frühere Ansätze - seit 1917 in Besprechungen mit P. BERNAYS wieder aufgenommen habe, sind von mir an verschiedenen Stellen eingehend dargelegt worden. Diesen Untersuchungen, an denen auch W. ACKERMANN beteiligt ist, haben sich seither noch verschiedene Mathematiker angeschlossen. Der hier in seinem ersten Teil vorliegende, von BERNAYS abgefaßte und noch fortzusetzende Lehrgang bezweckt eine Darstellung der Theorie nach ihren heutigen Ergebnissen. Dieser Ergebnisstand weist zugleich die Richtung (...) für die weitere Forschung in der Beweistheorie auf das Endziel hin, unsere üblichen Methoden der Mathematik samt und sonders als widerspruchsfrei zu erkennen. Im Hinblick auf dieses Ziel möchte ich hervorheben, daß die zeit weilig aufgekommene Meinung, aus gewissen neueren Ergebnissen von GÖDEL folge die Undurchführbarkeit meiner Beweistheorie, als irrtüm lich erwiesen ist. Jenes Ergebnis zeigt in der Tat auch nur, daß man für die weitergehenden Widerspruchsfreiheitsbeweise den finiten Stand punkt in einer schärferen Weise ausnutzen muß, als dieses bei der Be trachtung der elementaren Formallsmen erforderlich ist. Göttingen, im März 1934 HILBERT Vorwort zur ersten Auflage Eine Darstellung der Beweistheorie, welche aus dem HILBERTschen Ansatz zur Behandlung der mathematisch-logischen Grundlagenpro bleme erwachsen ist, wurde schon seit längerem von HILBERT ange kündigt. (shrink)

Printbegrænsninger: Der kan printes kapitelvis.

The material contained in the following translation was given in substance by Professor Hilbertas a course of lectures on euclidean geometry at the University of G]ottingen during the wintersemester of 1898-1899. The results of his investigation were re-arranged and put into the formin which they appear here as a memorial address published in connection with the celebration atthe unveiling of the Gauss-Weber monument at G]ottingen, in June, 1899. In the French edition, which appeared soon after, Professor Hilbert made some additions, (...) particularly in the concludingremarks, where he gave an account of the results of a recent investigation made by Dr. Dehn.These additions have been incorporated in the following translation.Geometry, like arithmetic, requires for its logical development only a small number ofsimple, fundamental principles. These fundamental principles are called the axioms ofgeometry. The choice of the axioms and the investigation of their relations to one anotheris a problem which, since the time of Euclid, has been discussed in numerous excellentmemoirs to be found in the mathematical literature.1 This problem is tantamount to thelogical analysis of our intuition of space. (shrink)

In this collection of provocative essays, historians and literary theorists assess the influence of Michel Foucault, particularly his History of Sexuality, on the study of classics. Foucault's famous work presents a bold theory of sexuality for both ancient and modern times, and yet until now it has remained under-explored and insufficiently analyzed. By bringing together the historical knowledge, philological skills, and theoretical perspectives of a wide range of scholars, this collection enables the reader to explore Foucault's model of Greek culture (...) and see how well his interpretation accounts for the full range of evidence from Greece and Rome. Not only do the essays bring to light the assumptions, ideas, and practices that constituted the intimate lives of men and women in the ancient Mediterranean world, but they also demonstrate the importance of the History of Sexuality for fields as diverse as Greco-Roman antiquity, women's history, cultural studies, philosophy, and modern sexuality. The essays include "Situating The History of Sexuality" (the editors), "Taking the Sex Out of Sexuality: Foucault's Failed History" (Joel Black), "Incipit Philosophia" (Alain Vizier), "The Subject in Antiquity after Foucault" (Page duBois), "This Myth Which Is Not One: Construction of Discourse in Plato's Symposium" (Jeffrey S. Carnes), "Foucault's History of Sexuality: A Useful Theory for Women?" (Amy Richlin), "Catullan Consciousness, the 'Care of the Self,' and the Force of the Negative in History" (Paul Allen Miller), "Reversals of Platonic Love in Petronius' Satyricon" (Daniel B. McGlathery), and an essay from Dislocating Masculinity (Lin Foxhall). (shrink)

The dispute between realists about color and anti-realists is actually a dispute about the nature of color properties. The disputants do not disagree over what material objects are like. Rather, they disagree over whether any of the uncontroversial facts about material objects--their powers to cause visual experiences, their dispositions to reflect incident light, their atomic makeup, and so on--amount to their having colors. The disagreement is thus about which properties colors are and, in particular, whether colors are any of the (...) properties in a particular set that is acknowledged on both sides to exhaust the properties of material objects. In a previous paper we discussed at length one attempt to identify colors with particular properties of material objects--namely, with their dispositions to cause visual experiences. Here we shall discuss a different and perhaps more influential version of realism, which says that the colors of material objects are microphysical properties of their surfaces. We shall call this theory physicalism about color (physicalism, for short). In order to evaluate this theory, however, we shall first have to clarify some methodological issues. Our hope is that we can bring some further clarity to the question of color realism, whether or not we succeed in our critique of the physicalists' answer. (shrink)

Gilbertson, Savulescu, Oakley and Wilkinson propose extending the availability of terminal sedation (TS) to patients with intractable pain and/or suffering who are expected to live more than 2 weeks (hence the designation of extended TS (ETS)) and to patients whose values are known but who do not have decision-making capacity.1 Their plan is worthy of serious consideration: it is, after all, based on the fundamental and well-recognised medical ethical values of patient autonomy and beneficence. But, even when restricted to jurisdictions (...) that allow assisted dying, the ETS proposal raises three important issues. When the authors speak of ‘assisted dying’ and of ‘Voluntary Assisted Dying (VAS)’, they refer specifically to the laws in Australia and similar ones in New Zealand, the Netherlands, Belgium, Luxembourg, Switzerland, Spain and Canada that permit clinicians either to provide patients with lethal medications for self-administration (formerly called physician-assisted suicide) or to administer lethal medications themselves (voluntary euthanasia). First, the authors distinguish—as do many patients and the public—between sedation to unconsciousness and death. Indeed, as the authors point out, the difference seems obvious: unconsciousness can be reversed, death cannot. Yet in the case of TS, this may be …. (shrink)

Recent discourses about the legitimacy of homeopathy have focused on its scientific plausibility, mechanism of action, and evidence base. These, frequently, conclude not only that homeopathy is scientifically baseless, but that it is “unethical.” They have also diminished patients’ perspectives, values, and preferences. We contend that these critics confuse epistemic questions with questions of ethics, misconstrue the moral status of homeopaths, and have an impoverished idea of ethics—one that fails to account either for the moral worth of care and of (...) relationships or for the perspectives, values, and preferences of patients. Utilitarian critics, in particular, endeavour to present an objective evaluation—a type of moral calculus—quantifying the utilities and disutilities of homeopathy as a justification for the exclusion of homeopathy from research and health care. But these critiques are built upon a narrow formulation of evidence and care and a diminished episteme that excludes the values and preferences of researchers, homeopaths, and patients engaged in the practice of homeopathy. We suggest that homeopathy is ethical as it fulfils the needs and expectations of many patients; may be practiced safely and prudentially; values care and the virtues of the therapeutic relationship; and provides important benefits for patients. (shrink)

In 1925, the French Jesuit geologist, paleontologist, and theologian Pierre Teilhard de Chardin was removed from his teaching position at the Institut Catholique in Paris. He spent most of the next twenty years in China and his major theological writings were not published during his lifetime. We have uncovered major new archival sources on the investigation of Teilhard by the Jesuit curia and the Holy Office of the Roman Catholic Church. These include the Six Propositions to which he was required (...) to subscribe, which are here published and analyzed for the first time, along with his subscription. Associated correspondence, including a letter written by Teilhard to the Jesuit superior general Wlodimir Ledóchowski, enables a fuller understanding of Teilhard's response to the investigation of him. Moreover, comparison with similar investigations into other theologians in the first half of the 1920s allows an assessment of how the complex power dynamics between the Jesuit curia, the Holy Office, and Pope Pius XI shaped the outcome. (shrink)

An investigation is presented in which a computer simulation model (DIAGNOSER) is used to develop and test predictions for behavior of subjects in a task of medical diagnosis. The first experiment employed a process‐tracing methodology in order to compare hypothesis generation and evaluation behavior of DIAGNOSER with individuals at different levels of expertise (students, trainees, experts). A second experiment performed with only DIAGNOSER identified conditions under which errors in reasoning in the first experiment could be related to interpretation of specific (...) data items. Predictions derived from DIAGNOSER's performance were tested in a third experiment with a new sample of subjects. Data from the three experiments indicated that (1) form of diagnostic reasoning was similar for all subjects trained in medicine and for the simulation model, (2) substance of diagnostic reasoning employed by the simulation model was parable with that of the more expert subjects, and (3) errors in subjects' reasoning were attributable to deficiencies in disease knowledge and the interpretation of specific patient data cues predicted by the simulation model. (shrink)

Recent obituaries for traditional non-naturalistic approaches to rationality are not just premature but demonstrably self-defeating. One such prominent obituary appears in the writings of W. V. Quine, whose pessimism about traditional epistemology stems from his scientism, the view that the natural sciences have a monopoly on legitimate theoretical explanation. Quine also offers an obituary for the a priori constraints on rationality found in “first philosophy”, resting on his rejection of the “pernicious mentalism” of semantic theories of meaning. Quine’s pronouncements of (...) the death of traditional conceptions of rationality in epistemology and in the theory of meaning are, we contend, but misguided wishes for their death, wishes that face severe problems of self-defeat. In addition, Quine’s naturalistic epistemology is subject to damaging skeptical worries, the force of which one cannot escape by ignoring them. A non-naturalistic approach to rationality is here to stay, whether friends of Quine’s naturalism like it or not. Any sweeping claim that non-naturalistic accounts of rationality are dead will face insurmountable obstacles from unavoidable questions about its own rational justification. Such questions will keep non-naturalistic epistemology and first philosophy alive forever, or at least as long as philosophers endure. (shrink)

This Special Issue addresses a range of educational issues linked to main themes from our 2019 book The Emergence of Complexity: Rethinking Education as a Social Science. This book elaborated two major theses that raise fundamental questions for philosophy of education. First, that learning by groups is typically a distinctive kind of learning that is not reducible to learning by individuals. Second, that a degree of holism, as against a focus on individuals, is essential for achieving a convincing understanding of (...) this distinctive type of group learning. These two theses are of direct interest to philosophy of education since they challenges the resources of received theories of learning. Yet this kind of group learning characterises the vast bulk of human learning situations that occur outside of formal education systems. In this Special Issue introductory article we, firstly, introduce some basic principles of complexity theory, and demonstrate that, together with the concept of a ‘co-present group’ (between 2 and about 12 individuals), these ideas offer develop novel understandings of the distinctive learning that occurs within such groups. Secondly, we outline and illustrate with further examples the main features of co-present groups. Thirdly, we consolidate our conceptual work by showing five ways in which our account of group learning serves to refurbish the concept of ‘learning’. (shrink)

This paper describes DIVA (Dynamic Imagery for Visual Analogy), a computational model of visual imagery based on the scene graph, a powerful representational structure widely used in computer graphics. Scene graphs make possible the visual display of complex objects, including the motions of individual objects. Our model combines a semantic-network memory system with computational procedures based on scene graphs. The model can account for people’s ability to produce visual images of moving objects, in particular the ability to use dynamic visual (...) analogies that compare two systems of objects in motion. (shrink)

We present a computational evaluation of three hypotheses about sources of deficit in sentence comprehension in aphasia: slowed processing, intermittent deficiency, and resource reduction. The ACT-R based Lewis and Vasishth model is used to implement these three proposals. Slowed processing is implemented as slowed execution time of parse steps; intermittent deficiency as increased random noise in activation of elements in memory; and resource reduction as reduced spreading activation. As data, we considered subject vs. object relative sentences, presented in a self-paced (...) listening modality to 56 individuals with aphasia and 46 matched controls. The participants heard the sentences and carried out a picture verification task to decide on an interpretation of the sentence. These response accuracies are used to identify the best parameters that correspond to the three hypotheses mentioned above. We show that controls have more tightly clustered parameter values than IWA; specifically, compared to controls, among IWA there are more individuals with slow parsing times, high noise, and low spreading activation. We find that individual IWA show differential amounts of deficit along the three dimensions of slowed processing, intermittent deficiency, and resource reduction, overall, there is evidence for all three sources of deficit playing a role, and IWA have a more variable range of parameter values than controls. An important implication is that it may be meaningless to talk about sources of deficit with respect to an abstract verage IWA; the focus should be on the individual's differential degrees of deficit along different dimensions, and on understanding the causes of variability in deficit between participants. (shrink)

For half a century, Ernest Fortin's scholarship has charmed and educated theologians and philosophers with its intellectual search for the best way to live. Written by friends, colleagues, and students of Fortin, this book pays tribute to a remarkable thinker in a series of essays that bear eloquent testimony to Fortin's influence and his legacy. A formidable commentator on Catholic philosophical and political thought, Ernest Fortin inspired others with his restless inquiries beyond the boundaries of conventional scholarship. With essays on (...) subjects ranging across philosophy, political science, literature, and theology Gladly to Learn and Gladly to Teach reflects the astonishing depth and breadth of Fortin's contribution to contemporary thought. (shrink)

For half a century, Ernest Fortin's scholarship has charmed and educated theologians and philosophers with its intellectual search for the best way to live. Written by friends, colleagues, and students of Fortin, this book pays tribute to a remarkable thinker in a series of essays that bear eloquent testimony to Fortin's influence and his legacy. A formidable commentator on Catholic philosophical and political thought, Ernest Fortin inspired others with his restless inquiries beyond the boundaries of conventional scholarship. With essays on (...) subjects ranging across philosophy, political science, literature, and theology Gladly to Learn and Gladly to Teach reflects the astonishing depth and breadth of Fortin's contribution to contemporary thought. (shrink)