The human fovea is known for its distinctive pit‐like appearance, which results from the displacement of retinal layers superficial to the photoreceptors cells. The photoreceptors are found at high density within the foveal region but not the surrounding retina. Efforts to elucidate the mechanisms responsible for these unique features have ruled out cell death as an explanation for pit formation and changes in cell proliferation as the cause of increased photoreceptor density. These findings have led to speculation that mechanical forces (...) acting within and on the retina during development underly the formation of foveal architecture. Here we review eye morphogenesis and retinal remodeling in human embryonic development. Our meta‐analysis of the literature suggests that fovea formation is a protracted process involving dynamic changes in ocular shape that start early and continue throughout most of human embryonic development. From these observations, we propose a new model for fovea development. (shrink)

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 argues that, given a certain apparently inevitable thesis about content, we could not know our own minds. The thesis is that the content of a thought is determined by its relational properties.

The paper asks under what conditions deductive reasoning transmits justification from its premises to its conclusion. It argues that both standard externalist and standard internalist accounts of this phenomenon fail. The nature of this failure is taken to indicate the way forward: basic forms of deductive reasoning must justify by being instances of 'blind but blameless' reasoning. Finally, the paper explores the suggestion that an inferentialist account of the logical constants can help explain how such reasoning is possible.

Samuelson's text was first published in 1948, and it immediately became the authority for the principles of economics courses. The book continues to be the standard-bearer for principles courses, and this revision continues to be a clear, accurate, and interesting introduction to modern economics principles. Bill Nordhaus is now the primary author of this text, and he has revised the book to be as current and relevant as ever.

It is very common these days to come across the claim that the notions of mental content and linguistic meaning are normative notions. In the work of many philosophers, it plays a pivotal role. Saul Kripke made it the centerpiece of his influential discussion of Wittgenstein’s treatment of rulefollowing and private language; he used it to argue that the notions of meaning and content cannot be understood in naturalistic terms. Kripke’s formulations tend to be in terms of the notion of (...) linguistic meaning, but his argumentative strategy makes it clear that he holds both versions of the claim.... (shrink)

According to a very natural picture of rational belief, we aim to believe only what is true. However, as Bernard Williams used to say, the world does not just inscribe itself onto our minds. Rather, we have to try to figure out what is true from the evidence available to us. To do this, we rely on a set of epistemic rules that tell us in some general way what it would be most rational to believe under various epistemic circumstances. (...) We reason about what to believe; and we do so by relying on a set of rules.... (shrink)

This volume presents a series of influential essays by Paul Boghossian on the theory of content and on its relation to the phenomenon of a priori knowledge. The essays are organized under four headings: the nature of content; content and self-knowledge; knowledge, content, and the a priori; and colour concepts.

An irrealist conception of a given region of discourse is the view that no real properties answer to the central predicates of the region in question. Any such conception emerges, invariably, as the result of the interaction of two forces. An account of the meaning of the central predicates, along with a conception of the sorts of property the world may contain, conspire to show that, if the predicates of the region are taken to express properties, their extensions would have (...) to be deemed uniformly empty. The question then becomes whether the predicates are best understood as expressing properties, and hence as founded on error, or whether they ought to be understood along non-factualist lines.z Historically, irrealist models were developed primarily in connection with evaluative discourse, although as physicalism has flourished and as reductionist programs have failed, their application has been extended to many other domains. Indeed, it is one of the more influential suggestions in contemporary philosophy of mind that they apply even to ordinary belief/desire psychology. A correct understanding of the semantics and metaphysics of content-based psychology leaves us, so the proponents of the in-. (shrink)

Compatibilism combines an externalist view of mental content with a doctrine of privileged self‐knowledge. The essay presents a reductio of compatibilism by arguing that if compatibilism were true, we would be in a position to know certain facts about the world a priori, facts that no one can reasonably believe are knowable a priori. Whether this should be taken to cast doubt on externalism or privileged self‐knowledge is not discussed. Consideration is given to the ’empty case’—the case in which a (...) thinker expresses what he takes to be a genuine thought concerning a natural kind but where there is in fact no relevant natural kind, so that the putative natural kind term fails to refer. It is argued that, in such a case, on an externalist conception of natural kind terms, the thinker is deluded in taking himself to be expressing a complete thought, and that such delusions are not compatible with privileged self‐knowledge. (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)

I believe that the notion of epistemic transparency does play an important role in our ordinary conception of mental content and I want to say what that role is. Unfortunately, the task is a large one; here I am able only to begin on its outline. I shall proceed somewhat indirectly, beginning with a discussion of externalist conceptions of mental content. I shall show that such conceptions violate epistemic transparency to an extent that has not been fully appreciated. Subsequently, I (...) shall look at the implications of this violation and at the reconstructive project that a rejection of transparency entails. I am inclined to think it unlikely that we will get a conception of propositional content that underwrites epistemic transparency. But I am concerned that we have not fully appreciated the role that transparency currently plays and the work that would need to be done were we to discard it. (shrink)

These essays examine the ways in which the consideration of ethical questions is shaped by the structures of knowledge and communication at work in clinical ...

The paper is a defense of the project of explaining the a priori via the notion of meaning or concept possession. It responds to certain objections that have been made to this project—in particular, that there can be no epistemically analytic sentences that are not also metaphysically analytic, and that the notion of implicit definition cannot explain a priori entitlement. The paper goes on to distinguish between two different ways in which facts about meaning might generate facts about entitlement—inferential and (...) constitutive. It concludes by outlining a theory of the latter. (shrink)

ABSTRACTThis essay offers a reconfiguration of the possibility‐space of positions regarding the metaphysics and epistemology associated with historical knowledge. A tradition within analytic philosophy from Danto to Dummett attempts to answer questions about the reality of the past on the basis of two shared assumptions. The first takes individual statements as the relevant unit of semantic and philosophical analysis. The second presumes that variants of realism and antirealism about the past exhaust the metaphysical options . This essay argues that both (...) of these assumptions should be rejected. It develops as an alternative an irrealist account of history, a view based in part on work by Leon Goldstein and Ian Hacking. On an irrealist view, historical claims ought to be treated as subject to the same conditions and caveats that apply to any theory of empirical or scientific knowledge. Irrealism argues for pasts as made and not found. The argument emphasizes the priority of classification over perception in the order of understanding and so verification. Because nothing a priori anchors practices of classification, no sense can be attached to claims that some single structure must or does determine what events take place in human history. Irrealism denies to realism the very intelligibility of any imagined view from nowhere, that is, a determinately configured past subsisting sub specie aeternitatis. A plurality of pasts exists because constituting a past always depends to some degree on socially mediated negotiations of a fit between descriptions and experience. (shrink)

The question I want to look at in this paper is this: To what extent does an externalist conception of mental content threaten our ability to know the contents of our thoughts? I shall argue that, in an important sense, externalism is inconsistent with the thesis that we have authoritative first-person knowledge of thought content: in particular, I shall argue, it is inconsistent with the thesis that our thought contents are epistemically transparent to us. I shall further argue that this (...) is true in a sense that falsifies another important and traditionally fundamental view —that we can detect a priori whether our inferences are logically valid or not. I shall leave for another occasion the question whether these results reflect badly on epistemic transparency or on externalism. (shrink)

This article reflects on the assumption underlying the argument of Little et al. that "contested understandings" in the clinic are susceptible to reconciliation within a liberal framework described as "pragmatic pluralism". It is argued that no such reconciliation is possible or desirable because it is of the nature of the clinic that it provides a forum for multiple voices, ethical and cultural perspectives, and conceptual frameworks, and this is the source of its fecundity and creativity. Medicine itself cannot be represented (...) by a single discourse, precisely because it is itself an unruly collection of practices that, despite their heterogeneity, are able to engage in productive dialogues with each other. The heteroglossia of the clinic, therefore, is not a problem to be overcome. Rather, it is a rich resource to be mobilized in accordance with its multiple inherent purposes. (shrink)

When Benjamin Franklin suggested that man is by nature a tool-making animal, he summed up what was for his fellow Americans the common sense of the matter. It is not, then, surprising that, when Britain's colonists in North America broke with the mother country over the issue of an unrepresentative parliament's right to tax and govern the colonies, they defended their right to the property they owned on the ground that it was in a most thorough-going sense an extension of (...) themselves: the fruits of their own labor. This understanding they learned from John Locke, who based the argument of his Two Treatises of Government on the unorthodox account of providence and of man's place within the natural world that Sir Francis Bacon had been the first to articulate. All of this helps explain why the framers of the American constitution included within it a clause giving sanction to property in ideas of practical use. (shrink)

Rhodopsin, upon activation by light, transduces the photon signal by activation of the G‐protein, transducin. The well‐studied rhodopsin/transducin system serves as a model for the understanding of signal transduction by the large class of G‐protein‐coupled receptors. The interactive form of rhodopsin, R*, is conformationally similar or identical to rhodopsin's photolysis intermediate Metarhodopsin II (MII). Formation of MII requires deprotonation of rhodopsin's protonated Schiff base which appears to facilitate some opening of the rhodopsin structure. This allows a change in conformation at (...) rhodopsin's cytoplasmic surface that provides binding sites for transducin. Rhodopsin's 2nd, 3rd and putative 4th cytoplasmic loops bind transducin at sites including transducin's 5 kDa carboxyl‐terminal region. Site‐specific mutagenesis of rhodopsin is being used to distinguish sites on rhodopsin's surface that are important in binding transducin from those that function in activating transducin. These observations are consistent with and extend studies on the action of other G‐protein‐coupled receptors and their interactions with their respective G proteins. (shrink)

Research Articles Paul A. Rahe, Social Philosophy and Policy, FirstView Article.

The very idea of narrative explanation invites two objections: a methodological objection, stating that narrative structure is too far from the form of a scientific explanation to count as an explanation, and a metaphysical objection, stating that narrative structure situates historical practice too close to the writing of fiction. Both of these objections, however, are illfounded. The methodological objection and the dispute regarding the status of historical explanation can be disposed of by revealing their motivating presupposition: the plausibility of an (...) exclusivist explication of explanation which appeals either to the unity-of-method thesis or some implicit notion of analytic equivalence, both problematic philosophical doctrines. The metaphysical objection fails with the rejection of the idea, in Mink's phrase, of an "untold story." The argument against history as an "untold story" develops from Danto's image of an Ideal Chronicler recording ideal events. A consequence of rejecting this view is that it no longer makes sense to speak of historical narratives as true or false. However, this failure engenders no special problem for assessing the objectivity or explanatory utility of narratives qua explanations. (shrink)

Charles-Louis de Secondat, baron de La Brède et de Montesquieu, mentions Niccolò Machiavelli by name in his extant works just a handful of times. That, however, he read him carefully and thoroughly time and again there can be no doubt, and it is also clear that he couches his argument both in his Considerations on the Causes of the Greatness of the Romans and their Decline and in his Spirit of Laws as an appropriation and critique of the work of (...) the predecessor whom he termed ‘this great man’. In this paper I explore the manner in which the Frenchman redeployed the arguments advanced by the Florentine for the purpose of refuting the latter's conclusions. ☆ In citing Machiavelli, I employ N. Machiavelli, Tutte le opere, ed. M. Martelli (Florence, 1971), and I refer to the divisions within each work provided by the author. To make my references to Machiavelli's Discorsi sopra la prima deca di Tito Livio more precise, I sometimes also employ the paragraph enumeration added by the editors of N. Machiavelli, Discourses on Livy, tr. H. C. Mansfield and N. Tarcov (Chicago, 1996). In citing Montesquieu, wherever possible, I have employed the splendid new critical edition being produced by the Société Montesquieu: Charles-Louis de Secondat, baron de La Brède et de Montesquieu, Œuvres complètes de Montesquieu, ed. J. Ehrard, C. Volpilhac-Auger, et al., 22 vols. (Oxford, 1998-), which I cite as VF. I cite Montesquieu, Considérations sur les causes de la grandeur des Romains et de leur décadence (1734), ed. F. Weil and C. Courtney, as CR by chapter and, where appropriate, line from VF, ii, 89–285. I cite Montesquieu, De l’Esprit des lois (1757), as EL by part, book, chapter, and, where appropriate, page from Montesquieu, Œuvres complètes de Montesquieu, ed. R. Caillois, 2 vols. (Paris, 1949–51), ii, 225–995, and Charles-Louis de Secondat, baron de La Brède et de Montesquieu, Mes pensées as MP by number from Montesquieu, Œuvres complètes de Montesquieu, ed. A. Masson, 3 vols. (Paris, 1950–5), ii, 1–677. (shrink)

Democracy in America never mentions the Declaration of Independence. Is this perhaps a sign of hostility to the Declaration’s natural-rights teaching or to abstract principles? Or is it no more significant than The Federalist’s silence on this matter? Both are books of political science, not political philosophy; yet, when appropriate, Tocqueville addresses first principles, and endorses a natural-rights doctrine similar to Locke’s. He wrote primarily for the French, addressing issues he thought decisive for them, especially reconciling the ultra-royalists and the (...) French Catholic Church to the new democratic order. This guided the aspects of American democracy he wanted to emphasize. Thus Jesus Christ’s coming to earth was a political turning point in human history because he “made it understood that all members of the human species are naturally alike and equal.” Given aristocratic dominance in ancient society, without that event the principle of equality might never have been discovered. (shrink)

In this article, I show how traditional Thomistic claims about the creation and fall of the first human beings—or “Adam”—are compatible with the claims of evolutionary science concerning human origins. Aquinas claims that God created Adam in a state or condition of original justice, wholly subject to God and so fully virtuous, as well as internally immune to bodily corruption, suffering, and natural death. In defense of “Aquinas's Adam,” I first argue that affirming that the prelapsarian Adam was internally immune (...) to suffering and death does not require denying that these things predated his emergence within evolutionary history, or that he would have faced real challenges posed to him by his natural environment. Next, I rebut the claim that Adam must have been spiritually and morally fragile, given the traits he inherited from his evolutionary ancestors. Finally, I dispute the claim that Adam only could have fallen if he existed in a spiritually and morally fragile state. (shrink)