When in 2006 the Centers for Disease Control and Prevention issued revised recommendations for HIV testing in health care settings, vocal opponents charged that use of an ?opt-out? approach to presenting HIV testing to patients; the implementation of nontargeted, widespread HIV screening; the elimination of a separate signed consent; and the decoupling of required HIV prevention counseling from HIV testing are unethical. Here we undertake the first systematic ethical examination of the arguments both for and against the recommendations. Our examination (...) reveals that the ethical concerns raised by the critics predominately pertain not to ethically suspect elements of the recommendations themselves, but to suspicions that they will be implemented improperly. It has not been shown that the recommendations cannot be implemented properly. Here we show that in the United States the recommendations are morally justifiable and that safeguards or regulatory oversight may serve to ensure that the recommendations are properly implemented. (shrink)

Background: In 2006, the Centers for Disease Control and Prevention (CDC) recommended three changes to HIV testing methods in US healthcare settings: (1) an opt-out approach, (2) removal of separate signed consent, and (3) optional HIV prevention counseling. These recommendations led to a public debate about their moral acceptability. Methods: We interviewed 25 members from the fields of US HIV advocacy, care, policy, and research about the ethical merits and demerits of the three changes to HIV testing methods. We performed (...) a qualitative analysis of the participant responses in the interviews and summarized the major themes. Results: In general, arguments in favor of the methods were based upon their ultimate contribution to increasing HIV testing and permitting the consequent benefits of identifying those who are HIV infected and linking them to further care. Conclusions: The prevailing theme of ethical concern focused on suspicions that the methods might not be properly implemented, and that further safeguards might be needed. (shrink)

The 2006 Centers for Disease Control and Prevention (CDC) revised recommendations for HIV testing in clinical settings contained seven specific changes to how health care facilities should provide HIV testing. These seven elements have been both supported and challenged in the lay and medical literature. Our first paper in BMC Medical Ethics presented an analysis of the three HIV testing procedural changes included in the recommendations. In this paper, we address the four remaining elements that concern HIV screening policy changes: (...) (1) nontargeted HIV screening, (2) making HIV screening similar to screening for other treatable conditions, (3) increasing HIV screening without assured additional funding for linkage to care, and (4) making patients bear the costs of increased HIV screening in health care settings. (shrink)

Rhythm is key to language acquisition. Across languages, rhythmic features highlight fundamental linguistic elements of the sound stream and structural relations among them. A sensitivity to rhythmic features, which begins in utero, is evident at birth. What is less clear is whether rhythm supports infants' earliest links between language and cognition. Prior evidence has documented that for infants as young as 3 and 4 months, listening to their native language supports the core cognitive capacity of object categorization. This precocious link (...) is initially part of a broader template: listening to a non-native language from the same rhythmic class as and to vocalizations of non-human primates provide English-acquiring infants the same cognitive advantage as does listening to their native language. Here, we implement a machine-learning approach to ask whether there are acoustic properties, available on the surface of these vocalizations, that permit infants' to identify which vocalizations are candidate links to cognition. We provided the model with a robust sample of vocalizations that, from the vantage point of English-acquiring 4-month-olds, either support object categorization or fail to do so. We assess whether supervised ML classification models can distinguish those vocalizations that support cognition from those that do not, and which class of acoustic features best support that classification. Our analysis reveals that principal components derived from rhythm-relevant acoustic features were among the most robust in supporting the classification. Classifications performed using temporal envelope components were also robust. These new findings provide in principle evidence that infants' earliest links between vocalizations and cognition may be subserved by their perceptual sensitivity to rhythmic and spectral elements available on the surface of these vocalizations, and that these may guide infants' identification of candidate links to cognition. (shrink)

Zoë Waxman shows how the conditions and motivations for bearing witness changed immeasurably. She reveals the multiplicity of Holocaust experiences, the historically contingent nature of victims' responses, and the extent to which their identities - secular or religious, male or female, East or West European - affected not only what they observed but also how they have written about their experiences. In particular, she demonstrates that what survivors remember is substantially determined by the context in which they are remembering.

Arguing against the prevailing view that Holocaust survivors have come forward only recently to tell their stories,Writing the Holocaust examines the full history of Holocaust testimony, from the first chroniclers confined to Nazi-enforced ghettos to today's survivors writing as part of collective memory. Zoë Waxman shows how the conditions and motivations for bearing witness changed immeasurably. She reveals the multiplicity of Holocaust experiences, the historically contingent nature of victims' responses, and the extent to which their identities - secular or (...) religious, male or female, East or West European - affected not only what they observed but also how they have written about their experiences. In particular, she demonstrates that what survivors remember is substantially determined by the context in which they are remembering. (shrink)

This paper investigates the determinacy of mathematics. We begin by clarifying how we are understanding the notion of determinacy before turning to the questions of whether and how famous independence results bear on issues of determinacy in mathematics. From there, we pose a metasemantic challenge for those who believe that mathematical language is determinate, motivate two important constraints on attempts to meet our challenge, and then use these constraints to develop an argument against determinacy and discuss a particularly popular approach (...) to resolving indeterminacy, before offering some brief closing reflections. We believe our discussion poses a serious challenge for most philosophical theories of mathematics, since it puts considerable pressure on all views that accept a non-trivial amount of determinacy for even basic arithmetic. (shrink)

According to current philosophical lore, Kant rejected the notion that philosophy can progress by psychological means and endeavored to restrict it accordingly. This book reverses the frame from Kant the anti-psychological critic of psychological philosophy to Kant the preeminent psychological critic of non-psychological philosophy.

This book argues that Kant's transcendental idealism has been misinterpreted: it denies not simply the super-sensory reality of space, time, and appearances, but their reality outside imagination as well. After adducing extensive and explicit textual evidence in its favor, Waxman shows this interpretation to be essential to the Transcendental Deduction, the affirmation of things in themselves, and the attempt to surmount Hume's scepticism. He further argues that Kant's much-neglected claim that, besides himself, "no psychologist has so much as even (...) thought that the imagination might be a necessary constituent of perception," should be construed so that even our consciousness of sensation itself (visual, tactile, etc.) is impossible without imagination. A compelling and original contribution to Kantian scholarship, Kant's Model of the Mind will also bear close examination by students and scholars of Hume, the philosophy of mind, and the philosophy of science. (shrink)

Wayne Waxman here presents an ambitious and comprehensive attempt to link the philosophers of what are known as the British Empiricists--Locke, Berkeley, and Hume--to the philosophy of German philosopher Immanuel Kant. Much has been written about all these thinkers, who are among the most influential figures in the Western tradition. Waxman argues that, contrary to conventional wisdom, Kant is actually the culmination of the British empiricist program and that he shares their methodological assumptions and basic convictions about human (...) thought and knowledge. (shrink)

De Interpretatione is among Aristotle's most influential and widely read writings; C. W. A. Whitaker presents the first systematic study of this work, and offers a radical new view of its aims, its structure, and its place in Aristotle's system. He shows that De Interpretatione is not a disjointed essay on ill-connected subjects, as traditionally thought, but a highly organized and systematic treatise on logic, argument, and dialectic.

According to an influential recent view, S is propositionally justified in believing p iff S is in no position to know that S is in no position to know p. I argue that this view faces compelling counterexamples.

I argue that there is a tension between two of the most distinctive theses of Sven Rosenkranz’s Justification as Ignorance: the central thesis concerning justification, according to which an agent has propositional justification to believe p iff they are in no position to know that they are in no position to know p and the desire to avoid logical omniscience by imposing only “realistic” idealizations on epistemic agents.

This paper discusses the relevance of supertask computation for the determinacy of arithmetic. Recent work in the philosophy of physics has made plausible the possibility of supertask computers, capable of running through infinitely many individual computations in a finite time. A natural thought is that, if supertask computers are possible, this implies that arithmetical truth is determinate. In this paper we argue, via a careful analysis of putative arguments from supertask computations to determinacy, that this natural thought is mistaken: supertasks (...) are of no help in explaining arithmetical determinacy. (shrink)

Many mathematicians, physicists, and philosophers have suggested that the fact that mathematics—an a priori discipline informed substantially by aesthetic considerations—can be applied to natural science is mysterious. This paper sharpens and responds to a challenge to this effect. I argue that the aesthetic considerations used to evaluate and motivate mathematics are much more closely connected with the physical world than one might presume, and (with reference to case-studies within Galois theory and probabilistic number theory) show that they are correlated with (...) generally recognized theoretical virtues, such as explanatory depth, unifying power, fruitfulness, and importance. (shrink)

Many philosophers believe that a deflationist theory of truth must conservatively extend any base theory to which it is added. But when applied to arithmetic, it's argued, the imposition of a conservativeness requirement leads to a serious objection to deflationism: for the Gödel sentence for Peano Arithmetic is not a theorem of PA, but becomes one when PA is extended by adding plausible principles governing truth. This paper argues that no such objection succeeds. The issue turns on how we understand (...) the notion of logical consequence implicit in any conservativeness requirement, and whether we possess a categorical conception of the natural numbers. I offer a disjunctive response: if we possess a categorical conception of arithmetic, then deflationists have principled reason to accept a rich notion of logical consequence according to which the Gödel sentence follows from PA. But if we do not, then the reasons for requiring the derivation of the Gödel sentence lapse, and deflationists are free to accept a conservativeness requirement stated proof-theoretically. Either way, deflationism is in the clear. (shrink)

A mental state is luminous if, whenever an agent is in that state, they are in a position to know that they are. Following Timothy Williamson’s Knowledge and Its Limits, a wave of recent work has explored whether there are any non-trivial luminous mental states. A version of Williamson’s anti-luminosity appeals to a safety- theoretic principle connecting knowledge and confidence: if an agent knows p, then p is true in any nearby scenario where she has a similar level of confidence (...) in p. However, the relevant notion of confidence is relatively underexplored. This paper develops a precise theory of confidence: an agent’s degree of confidence in p is the objective chance they will rely on p in practical reasoning. This theory of confidence is then used to critically evaluate the anti-luminosity argument, leading to the surprising conclusion that although there are strong reasons for thinking that luminosity does not obtain, they are quite different from those the existing literature has considered. In particular, we show that once the notion of confidence is properly understood, the failure of luminosity follows from the assumption that knowledge requires high confidence, and does not require any kind of safety principle as a premise. (shrink)

Recent work on formal theories of truth has revived an approach, due originally to Tarski, on which syntax and truth theories are sharply distinguished—‘disentangled’—from mathematical base theories. In this paper, we defend a novel philosophical constraint on disentangled theories. We argue that these theories must be epistemically stable: they must possess an intrinsic motivation justifying no strictly stronger theory. In a disentangled setting, even if the base and the syntax theory are individually stable, they may be jointly unstable. We contend (...) that this flaw afflicts many proposals discussed in the literature; we defend a new, stable disentangled theory, double second-order arithmetic. (shrink)

Kant took up the issue of origin in the Metaphysical Deduction of the Categories. He sought to demonstrate that the concepts of metaphysics, considered in themselves, are mere logical functions, that is, ways of synthesizing concepts to form judgments Accordingly, the metaphysical concept of substance/accident contains nothing more than the logical form of subject/predicate, whereby any arbitrary pair of concepts may be united in a judgment; cause and effect merely the hypothetical form of judgment, whereby any arbitrary pair of judgments (...) may be united as condition and conditioned; totality the form of subordination of one concept to another whereby any species of the one has the other as its genus; and so forth. Logical functions are what remain after we abstract from all content of the concepts in a judgment; they are merely the various ways in which any concept, or judgment, may be combined with any other, and so are utterly devoid of objective sense or signification. More importantly, they comprise the totality of that which may be attributed to the understanding taken by itself, in isolation from the other faculties of the mind: sensibility, desire, and feeling. The understanding, for Kant, is the capacity to judge ; it is not, when considered without relation to other faculties, a faculty of concepts, rules, principles, or even categories. Indeed, if categories may be said to express any content at all, it is simply and solely the relation of the understanding to another faculty. In the case of sensibility--a faculty comprising the manifold of the senses and its synthesis in imagination--categories are obtained when this synthesis is represented universally and a priori, and so represent the "pure synthetic unity of the manifold in general." Similarly, the categories tabulated in the Critique of Practical Reason express the relation of the capacity to judge to the capacity of desire. Thus, aside from "their possibility as a priori cognitions of objects of an intuition in general," the categories of the first Critique are nothing over and above sheer logical forms, through which no objective necessary connection whatsoever can be thought; indeed, so entirely void of all content and objective import are they that even Hume almost certainly would have countenanced them. (shrink)

An application and confirmation of the thesis of my book, "Kant's Model of the Mind", that, for Kant, space and time exist only in and for imagination, and the given of sense is atemporal and aspatial (=transcendental idealism). On previous interpretations of transcendental idealism, appearances already have temporal and spatial existence; on mine, they lack such existence, and the purpose of the Analogies is to show how they originally acquire it. Existence in space and time is constituted by a priori (...) principles of necessary connection (the Analogies), whose validity with respect to appearances is grounded on the demand for original apperception (i.e., a synthetic unitary sensibility). The implications vis-à-vis Kant's metaphysics of nature and his Euclideanism are then explored. (shrink)

Philosophers and psychologists have debated the Molyneux problem since it first appeared in the 1694 edition of Locke’s Essay Concerning Human Understanding [ECHU].1 My focus today is Locke’s solution and the account of seeing threedimensional objects it subserves. More particularly, I want to concentrate on the prominence he accorded to inwardly perceived mental activity in experience of the external world. When this aspect is fully understood, I believe, Locke emerges as the philosopher most responsible for establishing the framework in which (...) Berkeley, Hume, and Kant would propound their analyses of cognitive experience. Indeed, I do not think.. (shrink)

Elections are not the solution to political crisis, they’re the problem. In lively dialogue form, The Democracy Manifesto explains why elections are anti-democratic and should be replaced with government in which decision-makers are randomly selected from the population at large.

Questions about concepts bring into play all the cognitive science disciplines. For many centuries, concepts belonged to philosophy; but more recently, these original caretakers have shared responsibility for this domain with cognitive and developmental psychology, linguistics, artificial intelligence, anthropology, and neuroscience. Each of these fields has offered insights into these building blocks of thought, and each has contributed a unique perspective on fundamental questions about the nature of minds. However, the integrative approach of cognitive science holds the promise of providing (...) new vantage points from a range of disciplines on this core issue. (shrink)