Over many centuries, the homing pigeon has been selectively bred for returning home from a distant location. As a result of this strong selective pressure, homing pigeons have developed an excellent spatial navigation system. This system passes through the hippocampal formation, which shares many striking similarities to the mammalian hippocampus; there are a host of shared neuropeptides, interconnections, and its role in the storage and manipulation of spatial maps. There are some notable differences as well: there are unique connectivity patterns (...) and spatial encoding strategies. This review summarizes the comparisons between the avian and mammalian hippocampal systems, and the responses of single neurons in several general categories: location and place cells responding in specific areas, path and goal cells responding between goal locations, context-dependent cells that respond before or during a task, and pattern, grid, and boundary cells that increase firing at stable intervals. Head-direction cells, responding to a specific compass direction, are found in mammals and other birds but not to date in pigeons. By studying an animal that evolved under significant adaptive pressure to quickly develop a complex and efficient spatial memory system, we may better understand the comparative neurology of neurospatial systems, and plot new and potentially fruitful avenues of comparative research in the future. (shrink)

Recent discussion of Scanlon's account of value, which analyses the value of X in terms of agents' reasons for having certain pro-attitudes or contra-attitudes towards X, has generated the problem (WKR problem): this is the problem, for the buck-passing view, of being able to acknowledge that there may be good reasons for attributing final value to X that have nothing to do with the final value that X actually possesses. I briefly review some of the existing solutions offered to the (...) WKR problem, including those by Philip Stratton-Lake and Jonas Olson, and offer a new, better one, which accommodates all the relevant cases presented in the literature. (shrink)

Nurses are often caught in the middle of what appear to be intractable moral conflicts. For such times, the function and limits of moral compromise need to be explored. Compromise is compatible with moral integrity if a number of conditions are met. Among these are the sharing of a moral language, mutual respect on the part of those who differ, acknowledgement of factual and moral complexities, and recognition of limits to compromise. Nurses are in a position uniquely suited to leadership (...) in fostering an environment that makes compromise with integrity possible. Keywords: compromise, integrity, nursing ethics CiteULike Connotea Del.icio.us What's this? (shrink)

Abstract:When people reason on the basis of moral rules, do they suppose that in the absence of a prohibitory rule they are free to act, or do they suppose that morality always requires a justification establishing a permission to act? In this essay we present a series of learning experiments that indicate when learners tend to close their system on the basis of natural liberty and when on the principle of residual prohibition. Those who are taught prohibitory rules tend to (...) infer natural liberty while those taught permission rules tend to infer residual prohibition. In mixed cases, where learners are taught both types of rules, there is some tendency to suppose that natural liberty is the default. Both natural liberty and its denial can be learned; is there a reason to adopt one system of moral rules or the other? We argue that systems of social morality based on a principle of natural liberty have a striking advantage over their competitors: they are well adapted to effectively exploring the constant novel circumstances that arise in open, dynamic, societies. (shrink)

This article attempts to develop a rational reconstruction of Kuhn's epistemological relativism which effectively defends it against an influential line of criticism in the work of Shapere and Scheffler. Against the latter's reading of Kuhn, it is argued (1) that it is the incommensurability of scientific problems, data, and standards, not that of scientific meanings which primarily grounds the relativism argument; and (2) that Kuhnian incommensurability is compatible with far greater epistemological continuity from one theory to another than is implied (...) by the criticisms in question. The reconstruction of Kuhn is then used to show that while it constitutes a provocative form of relativism, it can also plausibly account for the sense in which scientific development is rational, involves standards external to particular paradigms, and exhibits progress of a sort. Finally, the article attempts to develop an adequate critical perspective on Kuhn's relativism by distinguishing a ?short?run? from a ?long?run? relativism, and a relativism concerning scientific knowledge from one concerning scientific rationality in Kuhn; the challenge each poses to positi?vist philosophy of science is distinguished and separately evaluated. (shrink)

In this essay I sketch a philosophical argument for classical liberalism based on the requirements of public reason. I argue that we can develop a philosophical liberalism that, unlike so much recent philosophy, takes existing social facts and mores seriously while, at the same time, retaining the critical edge characteristic of the liberal tradition. I argue that once we develop such an account, we are led toward a vindication of “old” (qua classical) liberal morality—what Benjamin Constant called the “liberties of (...) the moderns.” A core thesis of the paper is that a regime of individual rights is crucial to the project of public justification because it disperses moral authority to individuals thus mitigating what I call the “burdens of justification.” Footnotesa Earlier versions of this essay were presented at the University of North Carolina, Chapel Hill, Philosophy Department workshop on the morality of capitalism, and at the conference on rights theory at the Murphy Institute, Tulane University. I am grateful for the comments of the participants; my special thanks to David Schmidtz, Julian Lamont, and Andrea Houchard for their useful written comments and suggestions. (shrink)

Simon Rippon believes that a certain argument is not sound.1 I agree. I do not agree with the role he assigns the argument in the debate about organ sales. Nor do I agree with the much stronger argument he puts forward that organ sales should be forbidden.The argument he believes unsound, which I shall use his terminology to refer to as the Laissez-Choisir or LC argument, has three premises. The one be believes false says, “If we take away what some (...) regard as their best option, we thereby make them worse off, at least from their own perspective”.Applied to the case of a market for organs, this says that if we take away what the potential organ seller regards as his best option, that is, there being a market for his organs, we make him worse off as judged by him. The reason Rippon thinks this argument is false is that, as I have argued and have been cited by Rippon, adding an option can, in addition to merely adding a choice, have adverse effects on the agents, can harm the agent by his own lights. Thus, says Rippon, if the argument is unsound, then it does not follow that if we deny the agent the option to sell his organs, we must be acting paternalistically. The option we are taking away is one that the agent himself regards as harmful.This is correct as far as it goes, but it might leave the reader thinking that the premise is never true. This would be to overlook the fact that even if the additional option …. (shrink)

Ethics consultation is a novel paradigm in European health-care institutions. In this paper, patient involvement in all clinical ethics activities is scrutinized. It is argued that patients should have access to case consultation services via clearly defined access paths. However, the right of both health-care professionals and patients indicates that patients should not always be notified of a consultation. Ethics education, another well-established function of an ethics committee, should equally be available for patients, lay people and hospital staff. Beyond access (...) and utilization, lay membership on a clinical ethics service is a matter of transparency, equal participation, empowerment and democratization. Lay and patient perspectives will contribute to the quality of ethics services on all levels from case consultations to ethics education and policy development. (shrink)

That the Bible rejoices in humour might come as a surprise to many. Yet since humour can be the most powerful method of communicating serious information in an appealing, relaxing and respectful manner, we must surely expect to find humour in the Scriptures. In fact, as this article explains, it is there in abundance. It is at the heart of our salvation history. The Bible 'revels in a profound laughter, a divine and human laughter that is endemic to the whole (...) narrative of creation, fall and salvation, and finally a laughter that results in a wondrous, all-encompassing comic vision'. We surely find divine humour in our attempts as humans to judge the actions of God according to our expectations and then to discover that our conclusions are dramatically wrong. (shrink)

Exceptuada la primera mitad de la Athēnaiōn Politeia, cuya autoría sigue siendo discutida, no hay obras de investigación histórica en el corpus aristotélico. Esto fortalece la impresión de que la teoría política aristotélica se abstrae de la historia. Esta opinión es reforzada por las afirmaciones contenidas en la Poética, que atenúan la importancia de la historia y los historiadores en favor de la poesía y los poetas. Esta contribución ofrece una interpretación más matizada, que se apoya sobre todo en una (...) lectura intertextual de la Athēnaiōn Politeia y el libro 5 de la Política. Ambos textos dirigen la atención del lector hacia la historia, pero en una manera completamente diferente. En este artículo argumento que los usos que hace Aristóteles de la historia son fundamentales para sus intercambios dialógicos con las narraciones que los seres humanos construyen para dar sentido a sus experiencias y aclarar sus opciones a la hora de elegir. Si se leen en este espíritu dialógico, estos textos resaltan las posibilidades y los riesgos de la acción política y salvaguardan la importancia tanto de la historia como de la poesía para la teoría política aristotélica. Palabras-clave: historia, poesía, ciencias sociales, teoría política. (shrink)

:Some understand utopia as an ideal society in which everyone would be thoroughly informed by a moral ethos: all would always act on their pure conscientious judgments about justice, and so it would never be necessary to provide incentives for them to act as justice requires. In this essay I argue that such a society is impossible. A society of purely conscientiously just agents would be unable to achieve real justice. This is the Paradox of Pure Conscientiousness. This paradox, I (...) argue, can only be overcome when individuals are prepared to depart from their own pure, conscientious, judgments of justice. (shrink)

The notion of a weakly scattered theory T is defined. T need not be scattered. For each a model of T, let sr() be the Scott rank of . Assume sr() ≤ ω\sp A \sb 1 for all a model of T. Let σ\sp T \sb 2 be the least Σ₂ admissible ordinal relative to T. If T admits effective k-splitting as defined in this paper, then θσ\cal Aθ\cal A$ a model of T.

‘Homophobia’ is shorthand for stigmatising attitudes and practices towards people who demonstrate sexual diversity. In this article, we reflect on how African Christian faith may become redemptive rather than violent in the context of lesbian, gay, bisexual, transgender and intersex forms of sexuality.

Randy E. Burnett, The Structure of Liberty Oxford: Clarendon Press, 1998, xi + 347pp.

Consider a stylized contrast between medical and business ethics. Both fields of applied ethics focus on a profession whose activities are basic to human welfare. Both enquire into obligations of professionals, and the relations between goals intrinsic to the profession and ethical duties to others and to the society. I am struck, however, by a fundamental difference: whereas medical ethics takes place against a background of almost universal consensus that the practice of medicine is admirable and morally praiseworthy, the business (...) profession is embedded within the framework of firms in a capitalist market economy, and for the last century and a half there has been sustained debate about the moral and economic justifiability of such an economy. To be sure, even under socialism there might be an “ethics of socialist managers,” and there would be some overlap between such an ethic and contemporary business ethics. Nevertheless, many of the characteristic problems of business ethics — e.g., what are the obligations of a corporation to its shareholders? — arise only in the context of a private property-based market economy. This raises a deep problem for business ethics: can one develop an account of ethical practices for an activity (i.e., business) while ignoring that the context in which this activity occurs (i.e., capitalism) is morally controversial? It is as if the work in medical ethics proceeded in the midst of widespread disagreement whether medicine was a good thing. Another way of thinking about the problem is: if one teaches business ethics, does this commit you to accepting that business can be ethical? And doesn’t this commit you to accepting that capitalism is justifiable?1 I suspect that this is a serious problem for many teachers of business ethics. Many were trained in academic philosophy, and within academic philosophy there are many who think — or at least suspect — that capitalism is basically unjust, or perhaps that only a greatly modified capitalism would be acceptable.. (shrink)

In a series of influential papers, John McDowell has argued that the rule‐following considerations explored in Wittgenstein’s later work provide support for a particularist form of moral objectivity. The article distinguishes three such arguments in McDowell’s writings, labelled the Anthropocentricism Argument, the Shapelessness Argument, and the Anti‐Humean Argument, respectively, and the author disputes the effectiveness of each of them. As far as these metaethical debates are concerned, the article concludes that the rule‐following considerations leave everything in their place.

Targeted killing is a subspecies of assassination, deployed against irregular combatants such as terrorists. The justification for targeted killing bypasses the usual ‘war paradigm’ and ‘criminal enforcement paradigm’, and is thus unusual. There are various ways of securing such a justification, but also a number of dangers attending these arguments.

My concern in this essay is a family of liberal theories that I shall call “public reason liberalism,” which arose out of the social contract theories of Hobbes, Locke and Rousseau. These social contract accounts stressed that the justification of the state depended on showing that everyone would, in some way, consent to it. However, by relying on consent, social contract theory seemed to suppose a voluntarist conception of political obligation and authority: I am only bound by political authority if (...) I choose to be bound.1 Only in Kant, I think, does it become clear that consent is not fundamental to a social contract view: Kant insists that we have a duty to agree to act according to the idea of the “original contract.”2 Rawls’s revival of the social contract tradition in A Theory of Justice also made no important appeal to consent, though the apparatus of an “original agreement” of sorts persisted. The aim of the original position, Rawls announced, is to settle “the question of justification…by working out a problem of deliberation.”3 As the question of public justification takes center stage (we might say as contractualist liberalism becomes justificatory liberalism), it becomes clear that posing the problem of justification in terms of a deliberative or a bargaining problem is simply a heuristic: the real issue is “the problem of justification”4 — what principles can be justified to all reasonable persons. (shrink)

The essential outlines of the debate over voluntary euthanasia have not changed very much since Glanville Williams and Yale Kamisar debated the issues almost fifty years ago. On the one hand, there is an appeal to considerations of autonomy and the relief of suffering: individuals should be able to choose the timing and mode of their dying and they should not have to suffer from pain and other modes of indignity such as incontinence, paralysis, muscular wastage, and mental deterioration. So (...) far these would only generate a right or permission to take one's own life, but when we consider the problems in the context of end-of-life medical care and the uncontroversial duty of physicians to relieve the suffering of their patients we get a claim to assistance in dying. (shrink)