Although connectionism is advocated by its proponents as an alternative to the classical computational theory of mind, doubts persist about its _computational_ credentials. Our aim is to dispel these doubts by explaining how connectionist networks compute. We first develop a generic account of computation—no easy task, because computation, like almost every other foundational concept in cognitive science, has resisted canonical definition. We opt for a characterisation that does justice to the explanatory role of computation in cognitive science. Next we examine (...) what might be regarded as the “conventional” account of connectionist computation. We show why this account is inadequate and hence fosters the suspicion that connectionist networks aren’t genuinely computational. Lastly, we turn to the principal task of the paper: the development of a more robust portrait of connectionist computation. The basis of this portrait is an explanation of the representational capacities of connection weights, supported by an analysis of the weight configurations of a series of simulated neural networks. (shrink)

My aim in this paper is to articulate further what may be called an agency theory of self-knowledge. Many theorists have stressed how important agency is to self- knowledge, and much work has been done drawing connections between the two notions.² However, it has not always been clear what _epistemic_ advantage agency gives us in this area and why it does so. I take it as a constraint on an adequate account of how a subject knows her own mental states (...) and acts, that it construe the known mental states and acts realistically and as independent of their self-ascription, and that it deliver genuine epistemic standing to the knower. The main task of the paper will, then, be to explore how our having rational agency with respect to our mental states may be able to secure genuine epistemic warrant for our self-ascriptions of states or acts independent of the ascriptions. This task will be carried out by focussing on the question of what account we should give of our knowledge of what I call our acts of judging. In the remainder of this section, I will do a little to clarify what is meant by that question. Section 2 will attempt to introduce us to elements of the best way to approach the question by considering some alternative strategies. Section 3 is devoted to forming some idea of what _kind_ of warrant we are looking for when considering how agency might give us self-knowledge. Section 4 aims to present a suggestion as to how agency gives us the kind of warrant identified over our acts of judging. Section 5 deals with some objections. (shrink)

Reformers urge that representation no longer earns its explanatory keep in cognitive science, and that it is time to discard this troublesome concept. In contrast, we hold that without representation cognitive science is utterly bereft of tools for explaining natural intelligence. In order to defend the latter position, we focus on the explanatory role of representation in computation. We examine how the methods of digital and analog computation are used to model a relatively simple target system, and show that representation (...) plays an in-eliminable explanatory role in both cases. We conclude that, to the extent that biologic systems engage in computation, representation is destined to play an explanatory role in cognitive science. (shrink)

In assessing what the paradoxes meant to Plato, O'Brien uses certain broad principles of inquiry. First, he insists, any platonic doctrine must be placed in the context of Plato's whole philosophy--a truism not always honored. Second, the conversations of the dialogue form do not merely embellish Plato's philosophical statements but radically affect their expression. Originally published in 1967. A UNC Press Enduring Edition -- UNC Press Enduring Editions use the latest in digital technology to make available again books from (...) our distinguished backlist that were previously out of print. These editions are published unaltered from the original, and are presented in affordable paperback formats, bringing readers both historical and cultural value. (shrink)

Doctors have an ethical and legal duty to respect patient confidentiality. We consider the basis for this duty, looking particularly at the meaning and value of autonomy in health care. Enabling patients to decide how information about them is disclosed is an important element in autonomy and helps patients engage as active partners in their care.Good quality data is, however, essential for research, education, public health monitoring, and for many other activities essential to provision of health care. We discuss whether (...) it is necessary to choose between individual rights and the wider public interest and conclude that this should only rarely be necessary. The paper makes some recommendations on practical steps which could help ensure that good quality information is available for work which benefits society and the public health, while still enabling patients’ autonomy to be respected. (shrink)

In Connectionism and the Philosophy of Psychology, Horgan and Tienson (1996) argue that cognitive processes, pace classicism, are not governed by exceptionless, “representation-level” rules; they are instead the work of defeasible cognitive tendencies subserved by the non-linear dynamics of the brain’s neural networks. Many theorists are sympathetic with the dynamical characterisation of connectionism and the general (re)conception of cognition that it affords. But in all the excitement surrounding the connectionist revolution in cognitive science, it has largely gone unnoticed that connectionism (...) adds to the traditional focus on computational processes, a new focus – one on the vehicles of mental representation, on the entities that carry content through the mind. Indeed, if Horgan and Tienson’s dynamical characterisation of connectionism is on the right track, then so intimate is the relationship between computational processes and representational vehicles, that connectionist cognitive science is committed to a resemblance theory of mental content. (shrink)

We think the best prospect for a naturalistic explanation of phenomenal consciousness is to be found at the confluence of two influential ideas about the mind. The first is the _computational _ _theory of mind_: the theory that treats human cognitive processes as disciplined operations over neurally realised representing vehicles.1 The second is the _representationalist theory of _ _consciousness_: the theory that takes the phenomenal character of conscious experiences (the “what-it-is-likeness”) to be constituted by their representational content.2 Together these two (...) theories suggest that phenomenal consciousness might be explicable in terms of the representational content of the neurally realised representing vehicles that are generated and manipulated in the course of cognition. The simplest and most elegant hypothesis that one might entertain in this regard is that conscious experiences are identical to (i.e., are one and the same as) the brain’s representing vehicles. (shrink)

In this paper I want to propose that we see solipsism as arising from certain problems we have about identifying ourselves as subjects in an objective world. The discussion will centre on Wittgenstein.

The author proposes an analysis of boredom. The analysis he proposes is that boredom is an unpleasant mental state consisting of weariness, restlessness, and lack of interest, where certain causal relations exist among the components. He goes on to elaborate on and defend his analysis, concluding with some thoughts on the idea that boredom has some grand metaphysical significance.

Drawing on the problem of deviance, I present a novel line of argumentation against causal theories of action. The causalist faces a dilemma: either she adopts a simple account of the causal route between intention and outcome, at the cost of failing to rule out deviance cases, or she adopts a more sophisticated account, at the cost of ruling out cases of intentional action in which the causal route is merely unusual. Underlying this dilemma, I argue, is that the agent's (...) perspective plays an ineliminable role in determining which causal pathways are deviant and which are not. (shrink)

O'Brien provides a critical assessment of Ernest Mandel's 1975 monograph Late Capitalism. In so doing, he offers a historical narrative that puts into question Mandel's framing of 'waves' of capitalist development as a process of capital accumulation that was dependent upon uneven development in the Third World. O'Brien starts by problematising Mandel's argument that an initial concentration of money, capital and bullion in the hands of Europeans explains combined and uneven development. He goes on to demonstrate that Mandel's (...) notion of imperialism as a necessary conduit for the flow of surplus capital from industrialising Europe does not stand up to the historical evidence. In fact, O'Brien maintains an alternative thesis, namely that these marginalised regions were insuffciently penetrated by European capital. (shrink)

The project of the paper is a critical examination of the "strong thesis of eliminative materialism" in the philosophy of mind--The claim that all the mental entities that constitute the framework of commonsense psychology are, In principle at least, Eliminable from our ontology. The central conclusion reached is that the traditional formulation of this thesis is demonstrably untenable as it rests on a mistaken view of the relationship between our psychological self-Knowledge and language.

Proponents of ecological restoration view the practice as a means of both repairing damage done to ecosystems by humans and creating an avenue to re-establish respectful and cooperative human-environment relationships. One debate affecting ecological restoration focuses on the place of 'exotic' species in restored ecosystems. Though popular, campaigns against exotics have been criticized for their troubling rhetorical parallels with nativism aimed at human immigrants. I point to some of the reasons why this critique of nativism persists, despite protests that no (...) xenophobic intent is evident, emphasizing the intimacy between social metaphors and claims about exotic nature. Language is but one facet of an entanglement of nature and society that ecological restoration strives to take seriously; however, restoration practice remains ambivalent toward this dichotomy permitting a longing for lost community purity that is embraced in nativism. Regarding defenses of nativism, I point out limitations of attempts to reframe the issue from a reactionary rejection of the foreign Other toward an argument for protecting communities from a process akin to 'cultural imperialism'. (shrink)

In this paper I want to examine a claim made about the kind of immunity through misidentification relative to the first person (IEM) that attaches to action self-ascriptions. In particular, I want to consider whether we have reason to think a stronger kind of immunity attaches to action self-ascriptions, than attaches to self-ascriptions of bodily movement. I assume we have an awareness of our actions – agent’s awareness – and that agent’s awareness is not a form of perceptual bodily awareness. (...) The issue here is whether agents’ awareness grounds a kind of immunity to error that bodily awareness does not. However, perhaps more importantly, I want to argue that we only get a secure difference in immunity claims if have already decided whether a source of information is essentially first personal or not and made certain, not obviously warranted assumptions, about the transparency of content and about knowledge. If we hold that a subject’s knowledge of her actions is essentially first personal, in a way that a subject’s knowledge of her body through bodily awareness may not be, then we are better off arguing for that claim directly. Or so I will suggest. (shrink)

My concern is this paper is to consider the nature of obsessive thoughts with the aim of getting a clearer idea about the extent to which they are rightly identified as passive or as active. The nature of obsessive thoughts is of independent interest, but my concern with the question is also rooted in a general concern to map the extent of mental activity, and to defend the importance and centrality of a view of self-knowledge that appeals to agency. I (...) hold that much of our mental lives is active, and that the distinctive knowledge we have of our own minds is in many cases best explained by appealing to agency. Along with many others, I take knowledge of our actions and activities to be distinctive. We know our actions and activities in a way that we do not know anything else, and in a way that is distinctively and essentially self-conscious. (shrink)

In this paper we defend a position we call radical connectionism. Radical connectionism claims that cognition _never_ implicates an internal symbolic medium, not even when natural language plays a part in our thought processes. On the face of it, such a position renders the human capacity for abstract thought quite mysterious. However, we argue that connectionism is committed to an analog conception of neural computation, and that representation of the abstract is no more problematic for a system of analog vehicles (...) than for a symbol system. Natural language is therefore not required as a representational medium for abstract thought. Since natural language is arguably not a representational medium _at all_, but a conventionally governed scheme of communicative signals, we suggest that the role of internalised (i.e., self- directed) language is best conceived in terms of the coordination and control of cognitive activities within the brain. (shrink)

How is it that we think and refer in the first-person way? For most philosophers in the analytic tradition, the problem is essentially this: how two apparently conflicting kinds of properties can be reconciled and united as properties of the same entity. What is special about the first person has to be reconciled with what is ordinary about it. The range of responses reduces to four basic options. The orthodox view is optimistic: there really is a way of reconciling these (...) apparently contradictory properties as contained within the same thing. The heretical views are pessimistic and content to be so: there is no such way, and that is because there is simply nothing to reconcile – because there is really nothing special about what is in question; or there is really nothing ordinary about it; or there is really nothing …. (shrink)

This commentry focuses on the one major ecumenical theme propounded in Andy Clark's Being There that I find difficult to accept; this is Clark’s advocacy, especially in the third and final part of the book, of the extended nature of the embedded, embodied mind.

The connectionist vehicle theory of phenomenal experience in the target article identifies consciousness with the brain’s explicit representation of information in the form of stable patterns of neural activity. Commentators raise concerns about both the conceptual and empirical adequacy of this proposal. On the former front they worry about our reliance on vehicles, on representation, on stable patterns of activity, and on our identity claim. On the latter front their concerns range from the general plausibility of a vehicle theory to (...) our specific attempts to deal with the dissociation studies. We address these concerns, and then finish by considering whether the vehicle theory we have defended has a coherent story to tell about the active, unified subject to whom conscious experiences belong. (shrink)

The “New Natural Law” Theory (NNL) of Germain Grisez, John Finnis, Joseph Boyle, and their collaborators offers a distinctive account of intentional action, which underlies a moral theory that aims to justify many aspects of traditional morality and Catholic doctrine. -/- In fact, we show that the NNL is committed to premises that entail the permissibility of many actions that are irreconcilable with traditional morality and Catholic doctrine, such as elective abortions. These consequences follow principally from two aspects of the (...) NNL. The first aspect is its distinctive version of the planning theory of intention, in which adopting the 'first-person perspective' of an agent is a sufficient, and not merely necessary, condition for determining the nature of his intentional action; this planning theory rests upon an implicitly Cartesian conception of human behavior, in which behavior chosen by an agent has no intrinsic “intentionalness” apart from what he confers upon it as part of his plan. The second aspect is the NNL's distinctive account of basic human goods' incommensurability, according to which there is no common factor shared by basic human goods that allows them to be comparatively ranked in any way that directs practical deliberation. -/- The entailments of these two aspects of the NNL, we argue, amount to a reductio ad absurdum. Pace the proponents of the NNL account, we sketch an alternative hylomorphic conception of intentional action that avoids untoward moral implications by grounding human agency in the exercise of basic powers that are either (a) essential constituents of human nature or (b) acquired through participation in social practices. This conception of intentional action provides a stronger foundation for natural law theory. (shrink)

The origin of matter is one of the last and greatest unsolved mysteries bedevilling modern attempts at understanding the philosophy of the "Enneads." There are two stages in the production of Intellect and of soul. The One or Intellect produces an undifferentiated other, which becomes Intellect or soul by itself turning towards and looking towards the prior principle, with no possibility of the One's "turning towards" or "seeing" itself. But where does matter come from? To arrive at his conception of (...) matter, Plotinus has radically altered the definitions of non-being given by Plato and Aristotle in their refutation of Parmenides. Matter, for Plotinus, is a non-being opposed, not to "the being of each thing", as in Plato's "Sophist," but to all "the beings properly so-called", i.e. to all the forms. It is then further identified with Aristotle's definition of non-being as privation, with the crucial difference that privation, for Plotinus, is made a permanent substratum of change. This re-formulation of ideas from the "Sophist" and the "Physics" proves unmistakably that it is matter which is generated when soul produces a "non-being" which is also a "total lack of definition". The production of matter by soul does not, however, follow the model of the production of Intellect from the One or of soul from Intellect. Since matter is lifeless, it cannot turn towards its source. Soul therefore has to be herself directly responsible both for the production of matter and for the covering of matter with form. Matter is therefore included among the products which stem ultimately from the One. But the origin and the nature of matter have to be understood as very different from the double process of emanation which lies at the origin of Intellect and of soul. (shrink)

This is one of four interrelated action agenda papers resulting from the National Summit on Public Health Legal Preparedness convened in June 2007 by the Centers for Disease Control and Prevention and nineteen multi-disciplinary partner organizations. Each of the action agenda papers deals with one of the four core elements of public health legal preparedness: laws and legal authorities; competency in using those laws; coordination of law-based public health actions; and information. Options presented in this paper are for consideration by (...) policymakers and practitioners — in all jurisdictions and all relevant sectors and disciplines — with responsibilities for all-hazards emergency preparedness.This paper focuses on the fourth core element: information that can be used in shaping and applying law as a public health tool, specifically in the context of public health emergencies. (shrink)

THIS article concerning Mr. Marshall's open letter to Governor Smith does not pretend to be an answer. It suggests some philosophical considerations on the point at issue. The Editor.

In recent years, a number of contemporary proponents of psychoanalysis have sought to derive support for their conjectures about the _dynamic_ unconscious from the empirical evidence in favor of the _cognitive_ unconscious. It is our contention, however, that far from supporting the dynamic unconscious, recent work in cognitive science suggests that the time has come to dispense with this concept altogether. In this paper we defend this claim in two ways. First, we argue that any attempt to shore up the (...) dynamic unconscious with the cognitive unconscious is bound to fail, simply because the latter, as it is understood in contemporary cognitive science, is incompatible with the former, as it is traditionally conceived by psychoanalytic theory. Second, we show how psychological phenomena traditionally cited as evidence for the operation of a dynamic unconscious can be accommodated more parsimoniously by other means. (shrink)

Any creature that must move around in its environment to find nutrients and mates, in order to survive and reproduce, faces the problem of sensorimotor control. A solution to this problem requires an on-board control mechanism that can shape the creature’s behaviour so as to render it “appropriate” to the conditions that obtain. There are at least three ways in which such a control mechanism can work, and Nature has exploited them all. The first and most basic way is for (...) a creature to bump into the things in its environment, and then, depending on what has been encountered, seek to modify its behaviour accordingly. Such an approach is risky, however, since some things in the environment are distinctly unfriendly. A second and better way, therefore, is for a creature to exploit ambient forms of energy that carry information about the distal structure of the environment. This is an improvement on the first method since it enables the creature to respond to the surroundings without actually bumping into anything. Nonetheless, this second method also has its limitations, one of which is that the information conveyed by such ambient energy is often impoverished, ambiguous and intermittent. (shrink)

O’BRIEN T and ACKROYD S. Nursing Inquiry 2012; 19: 39–50 Understanding the recruitment and retention of overseas nurses: realist case study research in National Health Service Hospitals in the UKThis paper illustrates one of the possible applications of critical realist ideas to the analysis of health services, in the use of comparative case study research design, to elucidate the causal social processes underlying events. In the research reported here, a comparative research design was used as a basis for improving our (...) understanding of the processes involved in the assimilation of overseas nurses (OSN) into the salient long‐term workforce of the National Health Service (NHS) hospitals in the UK. The work brought to light the salient experiences of overseas nurses during their initial work in the NHS hospitals, and these were used as a basis for developing an account of the general mechanisms typically underlying the recruitment and assimilation at work. The authors conclude that successful assimilation is often hindered by the presence of occupational closure mechanisms, by which home nurses effectively excluded recruits from participation and promotion; these mechanisms, which articulate with everyday racism, threaten successful assimilation for obvious reasons. If the treatment recruits receive does not lead to withdrawal, it is because they typically have very strong economic motives to continue despite unfavourable and sometimes inhumane treatment. Thus, the research offered substantial reasons why recruitment policies should be reviewed by policy‐makers. (shrink)

O'Brien, Roderick When we held the Woods Centenary Seminar in 1989, the local Naracoorte Herald gave us excellent publicity. I recall sitting with the editor, Richard Peake, as he was briefed by the great Sr Margaret Press, assisted by Fr Kevin Horsell, the parish priest of Bordertown who brought his scientific background, and by me. The editor asked the question: 'If Mary MacKillop is to be canonised, why not Woods?'.

The distinction at the heart of van Gelder’s target article is one between digital computers and dynamical systems. But this distinction conflates two more fundamental distinctions in cognitive science that should be keep apart. When this conflation is undone, it becomes apparent that the “computational hypothesis” (CH) is not as dominant in contemporary cognitive science as van Gelder contends; nor has the “dynamical hypothesis” (DH) been neglected.

To unravel the intricacies of the last argument of the Phaedo for the immortality of the soul, the reader has to peel away successive presuppositions, his own, Plato's and not least the presupposition that Plato very skilfully portrays as being shared by Socrates and his friends.A first presupposition is the reader's own. According to our modern ways of thinking, a soul that is immortal, if there is such a thing, is a soul that lives forever. That presupposition is not shared (...) by Socrates and Cebes (Socrates' interlocutor in the final argument). A soul that survives separation from the body, once or a number of times, is held to have survived death and therefore to be immortal. But it does not follow that it will live forever. For a soul to live forever, it must be shown to be not only immortal, but imperishable. Only if the soul is both immortal and imperishable can the assembled company be sure that the Socrates who is talking to them now will still be living when, after sunset, he has drunk the hemlock and can talk to them no more.The modern reader who has divested himself of the presupposition that immortal and imperishable are mere synonyms, and therefore appreciates the need for an argument designed specifically to prove that the soul is imperishable and not merely immortal, has nonetheless to be aware of a second presupposition, a presupposition shared by Socrates and his friends which restricts the meaning that the modern reader might otherwise suppose to be conveyed by the word 'imperishable'. Both Socrates and Cebes, as portrayed in the Phaedo, take it for granted that the only time when the soul might perish is the moment of her separation from the body. Provided it can be shown that the soul will survive separation from the body, no matter how often the body is taken from her, the soul, so they are happy to assume, will have shown herself to be both immortal and imperishable.We do not have to suppose that this second presupposition is shared by the author of the dialogue. Plato's subtle but insistent restriction of the moment when the soul might be threatened with extinction to the moment of her separation from the body has been deliberately designed to alert the reader to a way of thinking which Socrates, Cebes and Echecrates all take for granted, but which Plato does not necessarily invite the reader of the dialogue to share.The restriction is nonetheless essential to the structure of the argument. It is because Socrates does not envisage a possible extinction of the soul at any moment other than the moment of separation from the body that he is able to present a soul that is essentially alive as immune to the death which separates soul from body, however often such a separation may occur, and as therefore (so he claims) not only immortal but imperishable.In presenting that argument, how far has Plato deliberately foregone any attempt to prove that the soul is imperishable subsequently to the moment of her separation from the body? Socrates argues that the soul is unaffected by the death of the body because she is essentially alive. He does not argue that she is immune to destruction or extinction because she is essentially existent. In the face of Plato's silence, in the Phaedo and elsewhere, the modern reader has to hold in abeyance a third and final presupposition, that only a being whose essence it is to exist can of its nature never not exist.To understand the dialogue is therefore no easy matter. The reader needs to distinguish Socrates as the mouthpiece of Plato from Plato as the author of the dialogue. At the same time the modern reader has to distinguish the Plato of history from a fictional Plato who shares our own ideas and our own preconceptions, including the concept of a being cuius essentia est esse. An intricate double task, which other modern readers of the dialogue have so far not even attempted. (shrink)

© 2003 by The Johns Hopkins University Press.

Hume is usually taken to have an evidentialist account of testimonial belief: one is justified in believing what someone says if one has empincal evidence that they have been reliable in the past. This account is impartialist: such evidence is required no matter who the person is, or what refotions she may have to you. I, however, argue that Hume has another account of testimony, one grounded in sympathy. This account is partialist, in that empincal evidence is not required in (...) order for one to be justified in believing some of the assertions of one's friends. (shrink)

_"The Essential Plotinus_ is a lifesaver. For many years my students in Greek and Roman Religion have depended on it to understand the transition from antiquity to the Middle Ages. The translation is crisp and clear, and the excerpts are just right for an introduction to Plotionus's many-layered view of the world and humankind’s place in it." --F. E. Romer, University of Arizona.

John Rawls’s political liberalism and its ideal of public reason are tremendously influential in contemporary political philosophy and in constitutional law as well. Many, perhaps even most, liberals are Rawlsians of one stripe or another. This is problematic, because most liberals also support the redefinition of civil marriage to include same-sex unions, and as I show, Rawls’s political liberalism actually prohibits same- sex marriage. Recently in Perry v. Schwarzenegger, however, California’s northern federal district court reinterpreted the traditional rational basis review (...) in terms of liberal neutrality akin to Rawls’s “public reason,” and overturned Proposition 8 and established same-sex marriage. (This reinterpretation was amplified in the 9th Circuit Court’s decision upholding the district court on appeal in Perry v. Brown.) But on its own grounds Perry should have drawn the opposite conclusion. This is because all the available arguments for recognizing same-sex unions as civil marriages stem from controversial comprehensive doctrines about the good, and this violates the ideal of public reason; yet there remains a publicly reasonable argument for traditional marriage, which I sketch here. In the course of my argument I develop Rawls’s politically liberal account of the family by drawing upon work by J. David Velleman and H. L. A. Hart, and discuss the implications of this account for political theory and constitutional law. (shrink)