Approaches to the interpretation of physical theories provide accounts of how physical meaning accrues to the mathematical structure of a theory. According to many standard approaches to interpretation, meaning relations are captured by maps from the mathematical structure of the theory to statements expressing its empirical content. In this article I argue that while such accounts adequately address meaning relations when exact models are available or perturbation theory converges, they do not fare as well for models that give rise to (...) divergent perturbative expansions. Since truncations of divergent perturbative expansions often play a critical role in establishing the empirical adequacy of a theory, this is a serious deficiency. I show how to augment state-space semantics, a view developed by Beth and van Fraassen, to capture perturbatively evaluated observables even in cases where perturbation theory is divergent. This new semantics establishes a sense in which the calculations that underwrite the empirical adequacy of a theory are both meaningful and true, but requires departure from the assumption that physical meaning is captured entirely by the exact models of a theory. (shrink)

Quantum field theories containing massless particles are divergent not just in the ultraviolet but also in the infrared. Infrared divergences are typically regarded as less conceptually problematic than ultraviolet divergences because there is a cancellation mechanism that renders measurable physical observables such as decay rates and cross-sections infrared finite. In this article, I scrutinize the restriction to measurable physical observables that is required to arrive at infrared finite results. I argue that the restriction does not necessitate a retreat to operationalism (...) about the meaning of the theory, but it does call attention to underappreciated features of the infrared regime. (shrink)

Haag's theorem has been interpreted as establishing that quantum field theory cannot consistently represent interacting fields. Earman and Fraser have clarified how it is possible to give mathematically consistent calculations in scattering theory despite the theorem. However, their analysis does not fully address the worry raised by the result. In particular, I argue that their approach fails to be a complete explanation of why Haag's theorem does not undermine claims about the empirical adequacy of particular quantum field theories. I then (...) show that such empirical adequacy claims are protected from Haag's result by the techniques that are required to obtain theoretical predictions for realistic experimental observables. I conclude by showing how Haag's theorem is illustrative of a general tension between the foundational significance of results that can be obtained in perturbation theory and non-perturbative characterizations of the content of quantum field theory. (shrink)

Physical theories often characterize their observables with real number precision. Many non-fundamental theories do so needlessly: they are more precise than they need to be to capture the physical matters of fact about their observables. A natural expectation is that a truly fundamental theory will require its full precision in order to exhaustively capture all of the fundamental physical matters of fact. I argue against this expectation and I show that we do not have good reason to expect that the (...) standard of precision set by successful theories, or even by a truly fundamental theory, will match the granularity of the physical facts. (shrink)

Haag’s theorem has been interpreted as establishing that quantum field theory cannot consistently represent interacting fields. Earman and Fraser have clarified how it is possible to give mathematically consistent calculations in scattering theory despite the theorem. However, their analysis does not fully address the worry raised by the result. In particular, I argue that their approach fails to be a complete explanation of why Haag’s theorem does not undermine claims about the empirical adequacy of particular quantum field theories. I then (...) show that such empirical adequacy claims are protected from Haag’s result by the techniques that are required to obtain theoretical predictions for realistic experimental observables. I conclude by showing how Haag’s theorem is illustrative of a general tension between the foundational significance of results that can be obtained in perturbation theory and non-perturbative characterizations of the content of quantum field theory. 1 Introduction2 Haag’s Theorem and the Interaction Picture3 Earman and Fraser on the Success of Scattering Theory4 Haag’s Theorem and Empirical Adequacy5 Conclusion. (shrink)

This paper places Julian Schwinger's development of the Euclidean Green's function formalism for quantum field theory in historical context. It traces the techniques employed in the formalism back to Schwinger's work on waveguides during World War II, and his subsequent formulation of the Minkowski space Green's function formalism for quantum field theory in 1951. Particular attention is dedicated to understanding Schwinger's physical motivation for pursuing the Euclidean extension of this formalism in 1958.

What determines whether an action is right or wrong? Morality, Rules, and Consequences: A Critical Reader explores for students and researchers the relationship between consequentialist theory and moral rules. Most of the chapters focus on rule consequentialism or on the distinction between act and rule versions of consequentialism. Contributors, among them the leading philosophers in the discipline, suggest ways of assessing whether rule consequentialism could be a satisfactory moral theory. These essays, all of which are previously unpublished, provide students in (...) moral philosophy with essential material and ask key questions on just what the criteria for an adequate moral theory might be. (shrink)

Late in 1990, the Center for the Study of Ethics in the Professions at Illinois Institute of Technology (lIT) received a grant of more than $200,000 from the National Science Foundation to try a campus-wide approach to integrating professional ethics into its technical curriculum.! Enough has now been accomplished to draw some tentative conclusions. I am the grant's principal investigator. In this paper, I shall describe what we at lIT did, what we learned, and what others, especially philosophers, can learn (...) from us. We set out to develop an approach that others could profitably adopt. I believe that we succeeded. (shrink)

My topic is authenticity in or perhaps as painting, not the authenticity of paintings; I know next to nothing about the problem of verifying claims of authorship. I am interested in another kind of genuineness and fraudulence, the kind at issue when we say of a person that he or she is false, not genuine, inauthentic, lacks integrity, and, especially when we say he or she is playing to the crowd, playing for effect, or is a poseur. These are not (...) quite moral distinctions (no one has a duty to be authentic), but they are robustly normative appraisals, applicable even when such falseness is not a case of straight hypocrisy but of lack of self-knowledge or of self-deceit. (A person can be quite sincere and not realize the extent of her submission to the other’s expectations and demands.) This sort of appraisal also has a long history in post-Rousseauist reflections on the dangers of uniquely modern forms of social dependence, and they are prominent worries in the modern novel. (shrink)

We apply a cognitive modeling approach to the problem of measuring expertise on rank ordering problems. In these problems, people must order a set of items in terms of a given criterion (e.g., ordering American holidays through the calendar year). Using a cognitive model of behavior on this problem that allows for individual differences in knowledge, we are able to infer people's expertise directly from the rankings they provide. We show that our model-based measure of expertise outperforms self-report measures, taken (...) both before and after completing the ordering of items, in terms of correlation with the actual accuracy of the answers. These results apply to six general knowledge tasks, like ordering American holidays, and two prediction tasks, involving sporting and television competitions. Based on these results, we discuss the potential and limitations of using cognitive models in assessing expertise. (shrink)

The dual-use dilemma arises in the context of research in the biological and other sciences as a consequence of the fact that one and the same piece of scientific research sometimes has the potential to be used for bad as well as good purposes. It is an ethical dilemma since it is about promoting good in the context of the potential for also causing harm, e.g., the promotion of health in the context of providing the wherewithal for the killing of (...) innocents. It is an ethical dilemma for the researcher because of the potential actions of others, e.g., malevolent non-researchers who might steal dangerous biological agents, or make use of the original researcher’s work. And it is a dilemma for governments concerned with the security of their citizens, as well as their health. In this article we construct a taxonomy of types of “experiments of concern” in the biological sciences, and thereby map the terrain of ethical risk. We then provide a series of analyses of the ethical problems and considerations at issue in the dual-use dilemma, including the impermissibility of certain kinds of research and possible restrictions on dissemination of research results given the risks to health and security. Finally, we explore the main available institutional responses to some of the specific ethical problems posed by the dual-use dilemma in the biological sciences. (shrink)

Rule consequentialism holds that an action's moral standing depends on its relation to the moral code whose general adoption would have the best consequences. Heretofore rule consequentialists have understood the notion of a code's being generally adopted in terms of its being generally obeyed or, more commonly, its being generally accepted. I argue that these ways of understanding general adoption lead to unacceptable formulations of the theory. For instance, Brad Hooker, Michael Ridge, and Holly Smith have recently offered different (...) answers to the question of what ‘acceptance rate’ we should build into our formulation of rule consequentialism, and all are unsatisfactory. I argue instead for a novel approach to formulating rule consequentialism, ‘uniform-moral-education’ rule consequentialism, on which what it means for a moral code to be generally adopted is not for it to be generally followed or generally accepted, but instead for it to be generally taught. (shrink)

Individuals differ greatly in their ability to learn and navigate through environments. One potential source of this variation is “directional sense” or the ability to identify, maintain, and compare allocentric headings. Allocentric headings are facing directions that are fixed to the external environment, such as cardinal directions. Measures of the ability to identify and compare allocentric headings, using photographs of familiar environments, have shown significant individual and strategy differences; however, the neural basis of these differences is unclear. Forty-five college students, (...) who were highly familiar with a campus environment and ranged in self-reported sense-of-direction, underwent fMRI scans while they completed the Relative Heading task, in which they had to indicate the direction of a series of photographs of recognizable campus buildings (i.e., “target headings”) with respect to initial “orienting headings”. Large individual differences were found in accuracy and correct decision latencies, with gender, self-reported sense-of-direction, and familiarity with campus buildings all predicting task performance. Using linear mixed models, the directional relationships between headings and the experiment location also impacted performance. Structural scans revealed that lateral orbitofrontal and superior parietal volume were related to task accuracy and decision latency, respectively. Bilateral hippocampus and right presubiculum volume were related to self-reported sense-of-direction. Meanwhile, functional results revealed clusters within the superior parietal lobule, supramarginal gyrus, superior frontal gyrus, lateral orbitofrontal cortex, and caudate among others in which the intensity of activation matched the linear magnitude of the difference between the orienting and target headings. While the retrosplenial cortex and hippocampus have previously been implicated in the coding of allocentric headings, this work revealed that comparing those headings additionally involved frontal and parietal regions. These results provide insights into the neural bases of the variation within human orientation abilities, and ultimately, human navigation. (shrink)

The civic republican tradition in political thought includes Niccolo Machiavelli, Jean-Jacques Rousseau, and Alexis de Tocqueville. The belief that it is imperative that citizens participate actively and disinterestedly in public affairs, i.e., that they possess "civic virtue" or "public spirit" is a prominent family resemblance between its members. Civic republican thought has undergone a recent resurgence, and one consequence is that political philosophers and other theorists have begun to ask whether liberals can take civic virtue seriously. Certain critics of liberalism, (...) including Michael Sandel and Charles Taylor, have answered this question in the negative. They give a variety of reasons for this answer, ranging from the inability of the atomistic ontologies underlying many liberal theories to make sense of the existence of a common good to the inability of the liberal state to concern itself with the character of its citizens. ;For the most part, unsurprisingly, these antiliberals direct their arguments at the work of twentieth-century "deontological" liberals such as John Rawls and Ronald Dworkin. While Rawls and Dworkin say relatively little about civic virtue, many earlier liberals believed firmly in its importance. John Stuart Mill's centrality to the liberal tradition and the thoroughgoing nature of his liberalism make him an especially interesting "civic liberal." My central thesis is that the civic and liberal components of his political philosophy combine to form a coherent whole. In my early exegetical chapters I provide the first systematic exposition of the frequently ignored civic component. I then address the work of several of Mill's interpreters who either explicitly or implicitly point to possible problems with his attempt to weave together the civic and liberal strands in his thought, and conclude that these problems are either not real or not insoluble. Finally, I consider whether the arguments which Sandel and Taylor, et. al., have given to show that contemporary liberal theories cannot consistently incorporate the civic republican belief in the importance of active and disinterested civic participation might have force against Mill. I show that they do not, and not simply because On Liberty is not A Theory of Justice but because the many of the objections are poorly reasoned. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:The Journal of Aesthetic Education 39.3 (2005) 44-57 [Access article in PDF] Literary Biography: The Cinderella of Literary Studies Michael Benton There are no prizes for guessing who are the two ugly sisters: Criticism, the elder one, dominated literary studies for the first half of the twentieth century; theory, her younger sister, flounced to the fore in the second half. Meanwhile, 'Cinders,' who had been doing the chores (...) for centuries, has been magically transformed in recent times, decked out in new clothes by Richard Holmes, Claire Tomalin, Juliet Barker, Peter Ackroyd et al., and, as the millennium approached, celebrated and admired on all sides. At the start of the new century, literary biography remains in vogue. The bibliography that carries it forward is rolling, and there is no sign of it turning into a pumpkin. Why is Cinderella so popular?One obvious if superficial answer might be that literary biography is where literary people go who find the contemporary preoccupation with theory to be personally undernourishing and critically unenlightening; they would rather stay with the literary works themselves and with the lives, the minds, and the times that produced them. Yet it is not only literary biography that is thriving; life writing in general is the fastest-growing area of mainstream publishing, evidence for which can be seen in Waterstone's flagship store in London's Piccadilly, which devotes its prime ground-floor site to thousands of biographies. This commercial high profile is responding to an evident, if unfocused, need to look at other lives and understand them. Individual reasons for the popularity of biography range from prurient interest and hero worship to a, perhaps unrecognized, search for coherence and purpose in an age that is often disinclined either to accept institutional values or to respect traditional authority. The motives for this search usually include the desire for recognizable success, to which end the invention of a convincing identity is essential. Biographies offer models of how others live, face challenges, and cope with change; they are prime sites for studying ourselves. Curiously, this justification for biography as providing [End Page 44] a model for living was felt most strongly when this literary genre first emerged in the eighteenth century. The difference today is that the model has changed: Biography as a moral exemplum based upon Christian principles has been replaced in today's celebrity culture by the demand for models of success provided by public personalities. Nonetheless, whatever the range of satisfactions readers seek in biography, life writing offers, in one form or another, detailed pictures of widely different ways of living and amid these, perhaps, some clues to how an individual sense of identity might be shaped.Literary biographies (i.e., biographies of writers, not biographies with a particular literary quality) are a significant and, in some respects, a unique subgenre since they purport to offer access to the creative imagination. They have a long and distinguished history from Johnson and Boswell to the present day; they are sometimes written by other novelists (Elizabeth Gaskell on Charlotte Bronte, Peter Ackroyd on Dickens); and autobiographical writing may take the form of poetry (Wordsworth) or fiction (Joyce).1 Furthermore recent writing in this field has increasingly introduced elements of metabiography in books by Adam Sisman2 and Lucasta Miller.3 It is evident, therefore, that literary biography offers a rich and varied area of study that raises issues about the relationships among biography, history, fiction, and poetry that are fundamental to aesthetic education.Yet despite this promise, it has become a truism to declare that biography has failed to establish any theoretical foundations upon which to build. Backscheider quotes Ira Nadel's remark on the absence of "a sustained theoretical discussion of biography incorporating some of the more probing and original speculations about language, structure, and discourse that have dominated post-structuralist thought."4 She goes on to lament the poverty of criticism; the absence of a cultivated readership; the failure to engage even with the practical questions of selection, organization, or presentation; and indicates that readers of biography are too easily... (shrink)

Mill's discussion of ‘the internal sanction’ in chapter III of Utilitarianism does not do justice to his understanding of internal sanctions; it omits some important points and obscures others. I offer an account of this portion of his moral psychology of motivation which brings out its subtleties and complexities. I show that he recognizes the importance of internal sanctions as sources of motives to develop and perfect our characters, as well as of motives to do our duty, and I examine (...) in some detail the various ways in which these sanctions give rise to motivating desires and aversions. (shrink)

Radical ecology typically brings to mind media images of ecological activists standing before loggers' saws, staging anti-nuclear marches, and confronting polluters on the high seas. Yet for more than twenty years, the activities of organizations such as the Greens and Earth First! have been influenced by a diverse, less-publicized group of radical ecological philosophers. It is their work—the philosophical underpinnings of the radical ecological movement—that is the subject of _Contesting Earth's Future_. The book offers a much-needed, balanced appraisal of radical (...) ecology's principles, goals, and limitations. Michael Zimmerman critically examines the movement's three major branches—deep ecology, social ecology, and ecofeminism. He also situates radical ecology within the complex cultural and political terrain of the late twentieth century, showing its relation to Martin Heidegger's anti-technological thought, 1960s counterculturalism, and contemporary theories of poststructuralism and postmodernity. An early and influential ecological thinker, Zimmerman is uniquely qualified to provide a broad overview of radical environmentalism and delineate its various schools of thought. He clearly describes their defining arguments and internecine disputes, among them the charge that deep ecology is an anti-modern, proto-fascist ideology. Reflecting both the movement's promise and its dangers, this book is essential reading for all those concerned with the worldwide ecological crisis. (shrink)

You can sometimes have and be moved by desires which you in some sense disown. The problem is whether we can make sense of these ideas of---as I will say---ownership and rejection of a desire, without appeal to a little person in the head who is looking on at the workings of her desires and giving the nod to some but not to others. Frankfurt's proposed solution to this problem, sketched in his 1971 article, has come to be called the (...) hierarchical model. Indeed, it seems that, normally, if an agent's relevant higher-order attitudes are not to some extent shaped by her evaluative reflections and judgments her agency will be flawed. But this suggests a Platonic challenge to the hierarchical account of ownership. The challenge is to explain why we should not see such evaluative judgments---rather than broadly Frankfurtian higher-order attitudes---as the fundamental basis of ownership or rejection of desire. I do think that a systematic absence of connection between higher-order Frankfurtian attitude and evaluative judgment would be a breakdown in proper functioning. But I want to explain how we can grant this point and still block the Platonic challenge. (shrink)

We are purposive agents; but we—adult humans in a broadly modern world—are more than that. We are reflective about our motivation. We form prior plans and policies that organize our activity over time. And we see ourselves as agents who persist over time and who begin, develop, and then complete temporally extended activities and projects. Any reasonably complete theory of human action will need in some way to advert to this trio of features—to our reflectiveness, our planfulness, and our conception (...) of our agency as temporally extended. These are, further, features that have great significance for the kinds of lives we can live. For these two reasons I will say that these are among the core features of human agency. A theory of human action needs to say what these core features consist in and how they are related to each other. And such a theory needs also to clarify the relation between these core features of our agency and the possibility that we are fully embedded in an event causal order. (shrink)

Minimizing the costs that others impose upon oneself and upon those in whom one has a fitness stake, such as kin and allies, is a key adaptive problem for many organisms. Our ancestors regularly faced such adaptive problems (including homicide, bodily harm, theft, mate poaching, cuckoldry, reputational damage, sexual aggression, and the infliction of these costs on one's offspring, mates, coalition partners, or friends). One solution to this problem is to impose retaliatory costs on an aggressor so that the aggressor (...) and other observers will lower their estimates of the net benefits to be gained from exploiting the retaliator in the future. We posit that humans have an evolved cognitive system that implements this strategy – deterrence – which we conceptualize as a revenge system. The revenge system produces a second adaptive problem: losing downstream gains from the individual on whom retaliatory costs have been imposed. We posit, consequently, a subsidiary computational system designed to restore particular relationships after cost-imposing interactions by inhibiting revenge and motivating behaviors that signal benevolence for the harmdoer. The operation of these systems depends on estimating the risk of future exploitation by the harmdoer and the expected future value of the relationship with the harmdoer. We review empirical evidence regarding the operation of these systems, discuss the causes of cultural and individual differences in their outputs, and sketch their computational architecture. (shrink)

From the philosopher’s perspective, the interest in quantum computation stems primarily from the way that it combines fundamental concepts from two distinct sciences: Physics, in particular Quantum Mechanics, and Computer Science, each long a subject of philosophical speculation and analysis in its own right. Quantum computing combines both of these more traditional areas of inquiry into one wholly new, if not quite independent, science. Over the course of this chapter we will be discussing some of the most important philosophical questions (...) that arise from this merger and philosophical lessons to be learned. (shrink)

Controversy and activism have long been linked to the subject of primate research. Even in the midst of raging ethical debates surrounding fertility treatments, genetically modified foods and stem-cell research, there has been no reduction in the campaigns of activists worldwide. Plying their trade of intimidation aimed at ending biomedical experimentation in all animals, they have succeeded in creating an environment where research institutions, often painted as guilty until proven innocent, have avoided addressing the issue for fear of becoming targets. (...) One area of intense debate is the use of primates in stroke research. Despite the fact that stroke kills more people each year than AIDS and malaria, and less than 5% of patients are candidates for current therapies, there is significant opposition to primate stroke research. A balanced examination of the ethics of primate stroke research is thus of broad interest to all areas of biomedical research. (shrink)

Radical ecology typically brings to mind media images of ecological activists standing before loggers' saws, staging anti-nuclear marches, and confronting polluters on the high seas. Yet for more than twenty years, the activities of organizations such as the Greens and Earth First! have been influenced by a diverse, less-publicized group of radical ecological philosophers. It is their work—the philosophical underpinnings of the radical ecological movement—that is the subject of _Contesting Earth's Future_. The book offers a much-needed, balanced appraisal of radical (...) ecology's principles, goals, and limitations. Michael Zimmerman critically examines the movement's three major branches—deep ecology, social ecology, and ecofeminism. He also situates radical ecology within the complex cultural and political terrain of the late twentieth century, showing its relation to Martin Heidegger's anti-technological thought, 1960s counterculturalism, and contemporary theories of poststructuralism and postmodernity. An early and influential ecological thinker, Zimmerman is uniquely qualified to provide a broad overview of radical environmentalism and delineate its various schools of thought. He clearly describes their defining arguments and internecine disputes, among them the charge that deep ecology is an anti-modern, proto-fascist ideology. Reflecting both the movement's promise and its dangers, this book is essential reading for all those concerned with the worldwide ecological crisis. (shrink)

Daniel, Michael E Review of: Saints, sacrilege and sedition: Religion and conflict in the Tudor reformations, by Eamon Duffy, pp. 253, paperback, $27.99.

There is a deeply entrenched view in philosophy and physics, the closed systems view, according to which isolated systems are conceived of as fundamental. On this view, when a system is under the influence of its environment this is described in terms of a coupling between it and a separate system which taken together are isolated. We argue against this view, and in favor of the alternative open systems view, for which systems interacting with their environment are conceived of as (...) fundamental, and the environment's influence is represented via the dynamical equations that govern the system's evolution. Taking quantum theories of closed and open systems as our case study, and considering three alternative notions of fundamentality: (i) ontic fundamentality, (ii) epistemic fundamentality, and (iii) explanatory fundamentality, we argue that the open systems view is fundamental, and that this has important implications for the philosophy of physics, the philosophy of science, and for metaphysics. (shrink)