Herr Royce ist doch ein bedeutender Denker und darf nur als solcher behandelt werden.("Royce is an important thinker, and may only be treated as such.")Scholars of pragmatism and of phenomenology have observed striking similarities between Josiah Royce and Edmund Husserl, foundational thinkers at the origins of two major philosophical movements whose effects are still strongly felt in the present day—Royce being considered a central founder of American pragmatic idealism, and Husserl of modern German phenomenology. Other scholars have noted striking similarities (...) between Royce's thought and that of the broader circle of phenomenology.2Can we discover in these relations definitive historical influences, rather than .. (shrink)
In this paper we argue for the robustness of Leibniz's commitment to the reality (but not substantiality) of body. We claim that a number of his most important metaphysical doctrines — among them, psychophysical parallelism, the harmony between efficient and final causes, the connection of all things, and the argument for the plurality of substances stemming from his solution to the continuum problem— make no sense if he is interpreted as giving an eliminative reduction of bodies to perceptions.
In this paper a number of oppositions which have haunted mathematics and philosophy are described and analyzed. These include the Continuous and the Discrete, the One and the Many, the Finite and the Infinite, the Whole and the Part, and the Constant and the Variable.
Understanding African Philosophy serves as a critical guide to some of the most important issues in modern African philosophy. Richard Bell introduces readers to the complexity of Africa, the legacy of colonialism, the challenges of post independence Africa, and other recent developments in African Philosophy. Chapters discuss the value of African oral and written texts for philosophy, concepts of "negritude," "African socialism," and "race," as well as current discussions in international development ethics connected to poverty and human suffering. Two (...) chapters are focused on moral issues related to community, justice, and civic responsibility. Bell's sensitivity to and engagement with the complications of cross-cultural understandings help non-African readers connect with African culture and thought. (shrink)
Many have criticized liberalism for being too individualistic, but few have offered an alternative that goes beyond a vague affirmation of the need for community. In this entertaining book, written in dialogue form, Daniel Bell fills this gap, presenting and defending a distinctively communitarian theory against the objections of a liberal critic. Drawing on the works of such thinkers as Charles Taylor, Michael Sandel, and Alasdair MacIntyre, Bell attacks liberalism's individualistic view of the person by pointing to our (...) social embeddedness. He develops Michael Walzer's idea that political thinking involves the interpretation of shared meanings emerging from the political life of a community, and intelligently rebuts criticism that this approach damages his case by being conservative and relativistic. Communitarianism and Its Critics is a provocative defense of a distinctly communitarian theory which will stimulate interest and debate among scholars and students of political theory as well as those approaching the subject for the first time. (shrink)
In contrast with some recent theories of infinitesimals as non-Archimedean entities, Leibniz’s mature interpretation was fully in accord with the Archimedean Axiom: infinitesimals are fictions, whose treatment as entities incomparably smaller than finite quantities is justifiable wholly in terms of variable finite quantities that can be taken as small as desired, i.e. syncategorematically. In this paper I explain this syncategorematic interpretation, and how Leibniz used it to justify the calculus. I then compare it with the approach of Smooth Infinitesimal Analysis (...) (SIA), as propounded by John Bell. Despite many parallels between SIA and Leibniz’s approach —the non-punctiform nature of infinitesimals, their acting as parts of the continuum, the dependence on variables (as opposed to the static quantities of both Standard and Non-standard Analysis), the resolution of curves into infinitesided polygons, and the finessing of a commitment to the existence of infinitesimals— I find some salient differences, especially with regard to higher-order infinitesimals. These differences are illustrated by a consideration of how each approach might be applied to Newton’s Proposition 6 of the Principia, and the derivation from it of the v2/r law for the centripetal force on a body orbiting around a centre of force. It is found that while Leibniz’s syncategorematic approach is adequate to ground a Leibnizian version of the v2/r law for the “solicitation” ddr experienced by the orbiting body, there is no corresponding possibility for a derivation of the law by nilsquare infinitesimals; and while SIA can allow for second order differentials if nilcube infinitesimals are assumed, difficulties remain concerning the compatibility of nilcube infinitesimals with the principles of SIA, and in any case render the type of infinitesimal analysis adopted dependent on its applicability to the problem at hand. (shrink)
The idea of a 'logic of quantum mechanics' or quantum logic was originally suggested by Birkhoff and von Neumann in their pioneering paper [1936]. Since that time there has been much argument about whether, or in what sense, quantum 'logic' can be actually considered a true logic (see, e.g. Bell and Hallett [1982], Dummett [1976], Gardner [1971]) and, if so, how it is to be distinguished from classical logic. In this paper I put forward a simple and natural semantical (...) framework for quantum logic which reveals its difference from classical logic in a strikingly intuitive way, viz. through the fact that quantum logic admits (suitably formulated versions of) the characteristic quantum-mechanical notions of superposition and incompatibility of attributes. That is, precisely the features that distinguish quantum from classical physics also serve, within this framework, to distinguish quantum from classical logic. Some light is shed on the question of whether quantum logic is a genuine logical system by introducing a natural entailment relation for quantum-logical formulas with the implication symbol. The novelty is that, although implication behaves as it should (i.e. the 'deduction theorem' holds), the order of introduction of premises is significant. The fact that a reasonable entailment relation can be formulated for quantum logic supports the view that it is a genuine logical system and not merely an algebraic formalism. (shrink)
Discover the truth about sex in the city (and the country). Mapping Desire explores the places and spaces of sexuality from body to community, from the "cottage" to the Barrio, from Boston to Jakarta, from home to cyberspace. Mapping Desire is the first book to explore sexualities from a geographical perspective. The nature of place and notions of space are of increasing centrality to cultural and social theory. Mapping Desires presents the rich and diverse world of contemporary sexuality, exploring how (...) the heterosexed body has been appropriated and resisted on the individual, community and city scales. Editors David Bell and Gill Valentine have brought together contributors with a wealth of approaches to ways in which the spaces of sex and the sexes of space are being mapped out across contemporary culture. Among the many sexual geographies covered are: Lesbians at home and on the streets; gay men on fantasy islands; bisexual identities; The heterosexualization of the workplace; bachelor farmers and spinsters; surveillance and sexuality; prostitution; queer politics; sexual citizenship, and the transformation of intimacy. The book is divided into four sections: cartographies/identities; sexualized spaces: global/local; sexualized spaces: local/global; sites of resistance. Each section is separately introduced. Beyond the bibliography, an annotated guide to further reading is also provided to help the reader map their own way through the literature. Mapping Desire will be a valuable and accessible travelogue of information for anyone interested in social, cultural and political geography, lesbian and gay studies, cultural studies, or simply those who want to find out more about the sexual landscape of contemporary society. Contents: Part I: Cartographies/Identities; Resolving Riddles: The Sexed Body, Julia Cream ; Locating Bisexual Identities: Discourses of Bisexuality and Contemporary Feminist Theory, Clare Hemmings; Of Moffies, Kaffiers and Perverts: Male Homosexuality and the Discourse of Moral Order in the Apartheid State, Glen Elder; Femme on the Streets, Butch in the Sheets (a Play on Whores), Alison Murray; Body Work: The Performance of Gendered and (Hetero)Sexualized Identities in City Workplaces, Linda McDowell; Part II: Sexualized Spaces: Global/Local; Whenever I Lay My Girlfriend That's My Home: The Performance and Surveillance of Lesbian Identities in Domestic Environments, Lynda Johnston and Gill Valentine; The Lesbian Flaneur, Sally Munt; Fantasy Islands: Popular Topographies of Marooned Masculinities, Gregory Woods; Sexuality and Urban Space: A Framework for Analysis, Lawrence Knopp; Part III: Sexualized Spaces: Local/Global; "And She Told Two Friends...": Lesbians Creating Urban Social Space, Tamar Rothenberg; Trading Places: Consumption, Sexuality and the Production of Queer Space, Jon Binnie; Bachelor Farmers and Spinsters: Gay and Lesbian Identities and Communities in Rural North Dakota, Jerry Lee Kramer; (Re)Constructing a Spanish Redlight District: Prostitution, Space and Power, Angie Hart; Part IV: Sites of Resistance; "Surveilliant Gays": HIV, Space and the Construction of Identities, David Woodhead; Sex, Scale and the "New Urban Politics": HIV-Prevention Strategies from Yaletown, Vancouver, Michael Brown; "Boom, Bye, Bye": Jamaican Ragga and Gay Resistance, Tracey Skelton; The Diversity of Queer Politics and the Redefinition of Sexual Identity and Community in Urban Space, Tim Davis; Perverse Dynamics, Sexual Citizenship and the Transformation of Intimacy, David Bell; Guide to Further Reading; Bibliography. (shrink)
"More than any thing else technology creates our world. It creates our wealth, our economy, our very way of being," says W. Brian Arthur. Yet, until now the major questions of technology have gone unanswered. Where do new technologies come from -- how exactly does invention work? What constitutes innovation, and how is it achieved? Why are certain regions -- Cambridge, England, in the 1920s and Silicon Valley today -- hotbeds of innovation, while others languish? Does technology, like biological (...) life, evolve? How do new industries, and the economy itself, emerge from technologies? In this groundbreaking work, pioneering technology thinker and economist W. Brian Arthur sets forth a boldly original way of thinking about technology that gives answers to these questions. The Nature of Technology is an elegant and powerful theory of technology's origins and evolution. It achieves for the progress of technology what Thomas Kuhn's The Structure of Scientific Revolutions did for scientific progress. Arthur explains how transformative new technologies arise and how innovation really works. Conventional thinking ascribes the invention of technologies to "thinking outside the box," or vaguely to genius or creativity, but Arthur shows that such explanations are inadequate. Rather, technologies are put together from pieces -- themselves technologies -- that already exist. Technologies therefore share common ancestries and combine, morph, and combine again to create further technologies. Technology evolves much as a coral reef builds itself from activities of small organisms -- it creates itself from itself; all technologies are descended from earlier technologies. Drawing on a wealth of examples, from historical inventions to the high-tech wonders of today, and writing in wonder fully engaging and clear prose, Arthur takes us on a mind-opening journey that will change the way we think about technology and how it structures our lives. (shrink)
From the New York Times bestselling author Derrick Bell, a profound meditation on achieving success with integrity. As one of the country's most influential law professors, Derrick Bell has spent a lifetime helping students struggling to maintain a sense of integrity in the face of an overwhelming pressure to succeed at any price. Frequently asked how he managed to be so extraordinarily successful while never giving up the fight for justice and equality, Bell decided to spend his (...) seventieth year writing a book of insight and guidance. The result, Ethical Ambition , is a deeply affecting, uplifting, and brilliant series of meditations that not only challenges us to face some of the most difficult questions that life presents, but dares to offer some solutions. Using incidents from his own life, Bell also looks to literature, history, and other contemporary figures who have refused to compromise their beliefs. In chapters that explore passion, faith courage, inspiration, humility, and relationships, Ethical Ambition address the most fundamental issues of life. (shrink)
Reading feminist theory as a complex imaginative achievement, Feminist Imagination considers feminist commitment through the interrogation of its philosophical, political and affective connections with the past, and especially with the `race' trials of the twentieth century. The book looks at: the 'directionlessness' of contemporary feminist thought; the question of essentialism and embodiment; the racial tensions in the work of Simone de Beauvoir; the totalitarian character in Hannah Arendt; the 'mimetic Jew' and the concept of mimesis in the work of Judith (...) Butler. Vikki Bell provides a compelling rethinking of feminist theory as bound up with attempts to understand oppression outside a focus on 'women'. She affirms feminism as a site and mode of making these connections. What emerges is a profound work brimming with insight that will be required reading for anyone who is seriously interested in feminist theory and, more generally, contemporary social theory. (shrink)
This book comprises all of John Bell's published and unpublished papers in the field of quantum mechanics, including two papers that appeared after the first edition was published. It also contains a preface written for the first edition, and an introduction by Alain Aspect that puts into context Bell's great contribution to the quantum philosophy debate. One of the leading expositors and interpreters of modern quantum theory, John Bell played a major role in the development of our (...) current understanding of the profound nature of quantum concepts. First edition Hb (1987): 0-521-33495-0 First edition Pb (1988): 0-521-36869-3. (shrink)
Winthrop Pickard Bell (1884–1965), a Canadian who studied with Husserl in Göttingen from 1911 to 1914, was arrested after the outbreak of World War I and interred at Ruhleben Prison Camp for the duration of the war. In 1915 or 1916 he presented a lecture titled “Canadian Problems and Possibilities” to other internees at the prison camp. This is the first time Bell’s lecture has appeared in print. Even though the lecture was given to a general audience and (...) thusmakes no explicit reference to Husserl or phenomenology, it is a systematic phenomenological analysis of the national form of group belonging and, as such, makes a substantial contribution to phenomenological sociology and political science, grounding that contribution in phenomenological philosophy. Bell describes the essence of the nation as an organic spiritual unity that grows or develops, and is thus not a product of will, and which becomes a unity by surmounting its parts. This unity is instantiated in a given nation by tradition. The particular character of a nation’s tradition gives it a tendency to act in one way rather than another. (shrink)
Bell’s theorem admits several interpretations or ‘solutions’, the standard interpretation being ‘indeterminism’, a next one ‘nonlocality’. In this article two further solutions are investigated, termed here ‘superdeterminism’ and ‘supercorrelation’. The former is especially interesting for philosophical reasons, if only because it is always rejected on the basis of extra-physical arguments. The latter, supercorrelation, will be studied here by investigating model systems that can mimic it, namely spin lattices. It is shown that in these systems the Bell inequality can (...) be violated, even if they are local according to usual definitions. Violation of the Bell inequality is retraced to violation of ‘measurement independence’. These results emphasize the importance of studying the premises of the Bell inequality in realistic systems. (shrink)
Arthur Pap’s work played an important role in the development of the analytic tradition. This role goes beyond the merely historical fact that Pap’s views of dispositional and modal concepts were influential. As a sympathetic critic of logical empiricism, Pap, like Quine, saw a deep tension in logical empiricism at its very best in the work of Carnap. But Pap’s critique of Carnap is quite different from Quine’s, and represents the discovery of limits beyond which empiricism cannot go, where (...) there lies nothing other than intuitive knowledge of logic itself. Pap’s arguments for this intuitive knowledge anticipate Etchemendy’s recent critique of the model-theoretic account of logical consequence. Pap’s work also anticipates prominent developments in the contemporary neo-Fregean philosophy of mathematics championed by Wright and Hale. Finally, Pap’s major philosophical preoccupation, the concepts of necessity and possibility, provides distinctive solutions and perspectives on issues of contemporary concern in the metaphysics of modality. In particular, Pap’s account of modality allows us to see the significance of Kripke’s well-known arguments on necessity and apriority in a new light. (shrink)
O mundo como vontade e representação, de A. Schopenhauer, constitui uma das principais fontes da primeira fase produtiva da obra de F. Nietzsche. O artigo ressalta os principais pontos da metafisica da música desenvolvida no terceiro capitulo da obra de Schopenhauer e indica as suas influências determinantes sobre o jovem Nietzsche.
Arthur W. H. Adkins's writings have sparked debates among a wide range of scholars over the nature of ancient Greek ethics and its relevance to modern times. Demonstrating the breadth of his influence, the essays in this volume reveal how leading classicists, philosophers, legal theorists, and scholars of religion have incorporated Adkins's thought into their own diverse research. The timely subjects addressed by the contributors include the relation between literature and moral understanding, moral and nonmoral values, and the contemporary (...) meaning of ancient Greek ethics. The volume also includes an essay from the late Adkins himself illustrating his methodology in an analysis of the "Speech of Lysias" in Plato's Phaedrus . The Greeks and Us will interest all those concerned with how ancient moral values do or do not differ from our own. Contributors include Arthur W. H. Adkins, Stephanie Nelson, Martha C. Nussbaum, Paul Schollmeier, James Boyd White, Bernard Williams, and Lee Yearley. Commentaries by Wendy Doniger, Charles M. Gray, David Grene, Robert B. Louden, Richard Posner, and Candace Vogler. (shrink)
The purpose of this paper is to evaluate the `Lorentzian Pedagogy' defended by J.S. Bell in his essay ``How to teach special relativity'', and to explore its consistency with Einstein's thinking from 1905 to 1952. Some remarks are also made in this context on Weyl's philosophy of relativity and his 1918 gauge theory. Finally, it is argued that the Lorentzian pedagogy---which stresses the important connection between kinematics and dynamics---clarifies the role of rods and clocks in general relativity.
I compare deterministic and stochastic hidden variable models of the Bell experiment, exphasising philosophical distinctions between the various ways of combining conditionals and probabilities. I make four main claims. (1) Under natural assumptions, locality as it occurs in these models is equivalent to causal independence, as analysed (in the spirit of Lewis) in terms of probabilities and conditionals. (2) Stochastic models are indeed more general than deterministic ones. (3) For factorizable stochastic models, relativity's lack of superluminal causation does not (...) favour locality over completeness. (4) If we prohibit all superluminal causation, then the violation of the Bell inequality teaches us a lesson, besides quantum mechanics' familiar ones that quantities can lack precise values and that pairs of quantities can lack joint probabilities: namely, some pairs of events are not screened off by their common past. (shrink)
Noncontextual hidden variables theories, assigning simultaneous values to all quantum mechanical observables, are inconsistent by theorems of Gleason and others. These theorems do not exclude contextual hidden variables theories, in which a complete state assigns values to physical quantities only relative to contexts. However, any contextual theory obeying a certain factorisability conditions implies one of Bell's Inequalities, thereby precluding complete agreement with quantum mechanical predictions. The present paper distinguishes two kinds of contextual theories, ‘algebraic’ and ‘environmental’, and investigates when (...) factorisability is reasonable. Some statements by Fine about the philosophical significance of Bell's Inequalities are then assessed. (shrink)
The paper begins with an example of the accounting treatment afforded an Indefeasible Rights Use (IRU) Swap by Global Crossing. The case presents a typical example of ways in which accounting firms contributed to the ethical scandals of the early 21st century. While the behavior of Arthur Andersen, the accounting company in the case, might have met the letter of the law, we argue that it violated the spirit of the law, which can be discovered by looking at (1) (...) the legitimate goals of a company which give it its ethical direction and (2) the responsibilities of the accounting professionals who serve the company and the general public. Those professional responsibilities are determined by looking at the legitimate function those professionals fulfill in the economy. A further claim is that Andersen and other accounting firms are motivated to abandon the responsibilities derived from pursuing their proper goals by falling into the trap of accumulating wealth for its own sake. We argue that the ultimate responsibility of internal auditors is to develop statements that give as reasonably true and fair a picture of the financial situation to any user having a claim to that knowledge. Further we argue that the major responsibilities of the external auditor are: first, to be responsible to the using public for evaluating financial statements and declaring that they represent a fair picture of the financial situation of a company, and second, to be a watchdog of financial markets and call into question irregular practices that would distort those pictures. Such due professional care requires the auditor to exercise professional skepticism: an attitude that includes a questioning mind and a critical assessment of audit evidence. The paper concludes by giving particular examples of how Arthur Andersen LLP failed to meet those responsibilities. (shrink)
Discussion of J. Kevin O’Regan’s “Why Red Doesn’t Sound Like a Bell: Understanding the Feel of Consciousness” Content Type Journal Article Pages 1-20 DOI 10.1007/s13164-012-0090-7 Authors J. Kevin O’Regan, Laboratoire Psychologie de la Perception, CNRS - Université Paris Descartes, Centre Biomédical des Saints Pères, 45 rue des Sts Pères, 75270 Paris cedex 06, France Ned Block, Departments of Philosophy, Psychology and Center for Neural Science, New York University, 5 Washington Place, New York, NY 10003, USA Journal Review of Philosophy (...) and Psychology Online ISSN 1878-5166 Print ISSN 1878-5158. (shrink)
Abstract In this essay I trace the role of history in the philosophy of art from the early twentieth century to the present, beginning with the rejection of history by formalists like Clive Bell. I then attempt to show how the arguments of people like Morris Weitz and Arthur Danto led to a re-appreciation of history by philosophers of art such as Richard Wollheim, Jerrold Levinson, Robert Stecker and others.
Einstein's "spookiness" is now called nonlocality, the mysterious ability of Nature to enforce correlations between separated but entangled parts of a quantum system that are out of speed-of-light contact, to reach faster-than-light across vast spatial distances or even across time itself to ensure that the parts of a quantum system are made to match. This column is about nonlocality, and how, through Bell's theorem, the nonlocality implicit in nature has been demonstrated in the laboratory.
A variation of Bell's theorem that deals with the indeterministic case is formulated and proved within the logical framework of Lewis's theory of counterfactuals. The no-faster-than-light-influence condition is expressed in terms of Lewis would counterfactual conditionals. Objections to this procedure raised by certain philosophers of science are examined and answered. The theorem shows that the incompatibility between the predictions of quantum theory and the idea of no faster-than-light influence cannot be ascribed to any auxiliary or tacit assumption of either (...) determinism or the related idea that outcomes of unperformed measurements are determinate within nature. In addition, the theorem provides an example of an application of Lewis's theory of counterfactuals in a rigorous scientific context. (shrink)
In the mid-nineteenth century George Boole formulated his ‘conditions of possible experience’. These are equations and ineqaulities that the relative frequencies of (logically connected) events must satisfy. Some of Boole's conditions have been rediscovered in more recent years by physicists, including Bell inequalities, Clauser Horne inequalities, and many others. In this paper, the nature of Boole's conditions and their relation to propositional logic is explained, and the puzzle associated with their violation by quantum frequencies is investigated in relation to (...) a variety of approaches to the interpretation of quantum mechanics. * While preparing this paper for publication I have learnt of the untimely death of Professor J. S. Bell, and I wish to dedicate the paper to his memory. This research was undertaken while I spent a sabbatical leave at Wolfson College, and the History and Philosophy of Science Department at the University of Cambridge. I would like to thank Michael Redhead and Jeremy Butterfield for their hospitality and for helpful discussions. A first draft of this paper has been distributed among the participants of the conference 'Einstein in Context' which was held in Israel, in April 1990.1 have benefited from the comments of many colleagues. I would like to thank in particular Arthur Fine who enlightened me on the prism models, David Albert. Maya Bar-Hillel. Yemima Ben-Menachem, Mara Beller. Simon Saunders, and Mark Steiner. This research is partially supported by the Edelstein Center for the History and Philosophy of Science at the Hebrew University. (shrink)
We first examine Howard's analysis of the Bell factorizability condition in terms of 'separability' and 'locality' and then consider his claims that the violations of Bell's inequality by the statistical predictions of quantum mechanics should be interpreted in terms of 'nonseparability' rather than 'nonlocality' and that 'nonseparability' implies the failure of spacetime as a principle of individuation for quantum-mechanical systems. We will argue that his argument for the first claim is less than compelling and that any argument for (...) the second claim will be interpretation-dependent and, hence, not generally valid. (shrink)
I apply some of the lessons from quantum theory, in particular from Bell’s theorem, to a debate on the foundations of decision theory and causation. By tracing a formal analogy between the basic assumptions of causal decision theory (CDT)—which was developed partly in response to Newcomb’s problem— and those of a local hidden variable theory in the context of quantum mechanics, I show that an agent who acts according to CDT and gives any nonzero credence to some possible causal (...) interpretations underlying quantum phenomena should bet against quantum mechanics in some feasible game scenarios involving entangled systems, no matter what evidence they acquire. As a consequence, either the most accepted version of decision theory is wrong, or it provides a practical distinction, in terms of the prescribed behaviour of rational agents, between some metaphysical hypotheses regarding the causal structure underlying quantum mechanics. (shrink)
Recent ?dynamical? approaches to relativity by Harvey Brown and his colleagues have used John Bell's own solution to a problem in relativity which has in the past sometimes been called ?Bell's spaceships paradox?, in a central way. This paper examines solutions to this problem in greater detail and from a broader philosophical perspective than Brown et al. offer. It also analyses the well-known analogy between special relativity and classical thermodynamics. This analysis leads to the sceptical conclusion that (...) class='Hi'>Bell's solution yields neither new philosophical insights concerning the foundations of relativity nor differential support for a specific view concerning the existence of space-time. (shrink)
The violation of the Bell inequality means that measurement-results in the two wings of the experiment cannot be screened off from one another, in the sense of Reichenbach. But does this mean that there is causation between the results? I argue that it does, according to Lewis's counterfactual analysis of causation and his associated views. The reason lies in his doctrine that chances evolve by conditionalization on intervening history. This doctrine collapses the distinction between the conditional probabilities that are (...) used to state screening off, and the counterfactuals with chance consequents that are used to state lack of causation. I briefly discuss ways to evade my argument. (shrink)
Jean Dominique Bauby, former editor of Elle, suffereda stroke to his brain stem that left him with locked-in syndrome. Subsequently, through blinking his left eye, he writes his memoirof this experience, The Diving Bell and the Butterfly. Thispaper explores the meaning of embodiment, especially as one'sbody bears upon one's personal identity. It explores the variouschallenges and threats to selfhood that result from Bauby'sexperience and recounts how Bauby rises to the challenge throughhis memory and imagination.
The best case for thinking that quantum mechanics is nonlocal rests on Bell's Theorem, and later results of the same kind. However, the correlations characteristic of Einstein–Podolsky–Rosen (EPR)–Bell (EPRB) experiments also arise in familiar cases elsewhere in quantum mechanics (QM), where the two measurements involved are timelike rather than spacelike separated; and in which the correlations are usually assumed to have a local causal explanation, requiring no action-at-a-distance (AAD). It is interesting to ask how this is possible, in (...) the light of Bell's Theorem. We investigate this question, and present two options. Either (i) the new cases are nonlocal too, in which case AAD is more widespread in QM than has previously been appreciated (and does not depend on entanglement, as usually construed); or (ii) the means of avoiding AAD in the new cases extends in a natural way to EPRB, removing AAD in these cases too. There is a third option, viz., that the new cases are strongly disanalogous to EPRB. But this option requires an argument, so far missing, that the physical world breaks the symmetries which otherwise support the analogy. In the absence of such an argument, the orthodox combination of views—action-at-a-distance in EPRB, but local causality in its timelike analogue—is less well established than it is usually assumed to be. 1 Introduction1.1 Background1.2 Outline of the argument2 The Experiments2.1 Standard EPRB2.2 Sideways EPRB2.3 Comparing the experiments2.4 The need for beables3 The Symmetry Considerations3.1 The action symmetry3.2 Time-symmetry in SEPRB4 The Basic Trilemma4.1 An intuitive defence of Option III?5 Avoiding the Trilemma?6 The Classical Objection7 Defending Option III7.1 The free will argument7.2 Independence and consistency8 Entanglement and Epistemic Perspective. (shrink)
City College of New York The hereditarian theory of race differences in IQ was briefly revived with the appearance of The Bell Curve but then quickly dismissed. The authors attempt a defense of it here, with an eye to conceptual and logical issues of special interests to philosophers, such as alleged infirmities in the heritability concept. At the same time, some relevant post-Bell Curve empirical data are introduced.
According to a wrong interpretation of the Bell theorem, it has been repeatedly claimed in recent times that we are forced by experiments to drop any possible form of realism in the foundations of quantum mechanics. In this paper I defend the simple thesis according to which the above claim cannot be consistently supported: the Bell theorem does not concern realism, and realism per se cannot be refuted in itself by any quantum experiment. As a consequence, realism in (...) quantum mechanics is not something that can be simply explained away once and for all on the basis of experiments, but rather something that must be conceptually characterized and discussed in terms of its foundational virtues and vices. To assess it, we cannot rely on experimentation but rather on philosophical discussion: realism is not a phlogiston-like notion, despite the efforts of the contemporary quantum orthodoxy to conceive it in Russellian terms as the relics of a bygone age. (shrink)
The hidden-variables model constructed by Karl Hess and Walter Philipp is claimed by its authors to exploit a "loophole" in Bell's theorem; according to Hess and Philipp, the parameters employed in their model extend beyond those considered by Bell. Furthermore, they claim that their model satisfies Einstein locality and is free of any "suspicion of spooky action at a distance." Both of these claims are false; the Hess-Philipp model achieves agreement with the quantum-mechanical predictions, not by circumventing (...) class='Hi'>Bell's theorem, but via Parameter Dependence. (shrink)
Contemporary versions of Bell’s argument against local hidden variable (LHV) theories are based on the Clauser Horne Shimony and Holt (CHSH) inequality, and various attempts to generalize it. The amount of violation of these inequalities cannot exceed the bound set by the Grothendieck constants. However, if we go back to the original derivation by Bell, and use the perfect anticorrelation embodied in the singlet spin state, we can go beyond these bounds. In this paper we derive two-particle (...) class='Hi'>Bell inequalities for traceless two-outcome observables, whose violation in the singlet spin state go beyond the Grothendieck constant both for the two and three dimensional cases. Moreover, creating a higher dimensional analog of perfect correlations, and applying a recent result of Alon and his associates (Invent. Math. 163 499 (2006)) we prove that there are two-particle Bell inequalities for traceless two-outcome observables whose violation increases to in…nity as the dimension and number of measurements grow. Technically these result are possible because perfect correlations (or anti-correlations) allow us to transport the indices of the inequality from the edges of a bipartite graph to those of the complete graph. Finally, it is shown how to apply these results to mixed Werner states, provided that the noise does not exceed 20%. (shrink)
Based partly on proving that algebraic relativistic quantum field theory (ARQFT) is a stochastic Einstein local (SEL) theory in the sense of SEL which was introduced by Hellman (1982b) and which is adapted in this paper to ARQFT, the recently proved maximal and typical violation of Bell's inequalities in ARQFT (Summers and Werner 1987a-c) is interpreted in this paper as showing that Bell's inequalities are, in a sense, irrelevant for the problem of Einstein local stochastic hidden variables, especially (...) if this problem is raised in connection with ARQFT. This leads to the question of how to formulate the problem of local hidden variables in ARQFT. By giving a precise definition of hidden-variable theory within the operator algebraic framework of quantum mechanics, it will be argued that the aim of hidden-variable investigations is to determine those classes of quantum theories whose elements represent a statistical content that cannot be reduced in a given way. In some particular way to be stated, a proposition will be stated which distinguishes quantum field theories whose statistical content cannot be reduced without violating some relativistic locality principle. (shrink)
Arthur Danto’s recent book, Andy Warhol, leads the reader through the story of the iconic American’s artistic life highlighted by a philosophical commentary, a commentary that merges Danto’s aesthetic theory with the artist himself. Inspired by Warhol’s Brillo Box installation, art that in Danto’s eyes was indiscernible from the everyday boxes it represented, Danto developed a theory that is able to differentiate art from non-art by employing the body of conceptual art theory manifest in what he termed the ‘artworld’. (...) The strength of Danto’s theory is found in its ability to explain the art of the post-modern era. His body of work weaves philosophy, art history and art criticism together, merging his aesthetic philosophy with his extensive knowledge of the world of art. Danto’s essentialist theory of embodied meaning provides him with a critical tool that succeeds in explaining the currents of contemporary art, a task that many great thinkers of art history were unable to do. If Warhol inspired Danto to create a philosophy of art, it is appropriate that Danto write a tribute to Warhol that traces how Warhol brought philosophy into art. Danto’s account of ‘Warhol as philosopher’ positions him as a pivotal figure in the history of twentieth-century art, effecting a sea change in how art was made and viewed. Warhol achieved this by conceiving of works that embodied the answers to a series of philosophical puzzles surrounding the nature of art. Warhol, as Danto describes him, manifests himself in his art because he had transformed himself, in a way, into an icon of the times. This pragmatist notion that art should undermine the dichotomies that exist between art and life would, by some accounts, position Warhol to be the philosopher that Danto claims him to be, for he dissolved the philosophical questions posted by late modern aesthetic thinkers by creating art that imploded the accepted notions of art at the time. One of Danto’s greatest contributions to aesthetics is his theory’s ability to distinguish art from non-art, recognizing that it is the artist’s intention that levels the sublimity of art into the commonplace, thereby transfiguring the everyday. However, acknowledging this achievement, I argue that Warhol’s philosophical contribution actually manifests itself in a manner different from that proposed by Danto. Danto maintains that the internal drive of art leads to the unfolding of art theoretical concepts that ineluctably shift the terrain of world of art. I would agree with Danto that Warhol, almost as Hegel viewed Napoleon as Geist on a horse, pushed forward the boundaries of art through the actualization of art’s internal drive. But I would disagree that the conceptual nature of art is one that unfolds merely as a relation of concepts that artists trace through a connection to the meaning of history they forge using their unmediated grasp of style. Rather, I would argue that the artist’s style is not bound so narrowly to the meanings they express. Through their aesthetic articulations, artists initiate a process of social interaction. This process employs the philosophical logic which Danto attributes to Warhol indirectly, and through it, it is able to transfigure the vocabulary of art—the concepts of the artworld—by superseding the language of modernism. Warhol’s philosophical contribution is seen in his mastery of both the medium of art and the underlying logic of the medium’s expression and reception. (shrink)
Bell’s theorem in its standard version demonstrates that the joint assumptions of the hidden-variable hypothesis and the principle of local causation lead to a conflict with quantum-mechanical predictions. In his latest counterfactual strengthening of Bell’s theorem, Stapp attempts to prove that the locality assumption itself contradicts the quantum-mechanical predictions in the Hardy case. His method relies on constructing a complex, non-truth functional formula which consists of statements about measurements and outcomes in some region R, and whose truth value (...) depends on the selection of a measurement setting in a space-like separated location L. Stapp argues that this fact shows that the information about the measurement selection made in L has to be present in R. I give detailed reasons why this conclusion can and should be resisted. Next I correct and formalize an informal argument by Shimony and Stein showing that the locality condition coupled with Einstein’s criterion of reality is inconsistent with quantum-mechanical predictions. I discuss the possibility of avoiding the inconsistency by rejecting Einstein’s criterion rather than the locality assumption. (shrink)
Contemporary hybrid logic is based on the idea of using formulas as terms, an idea invented and explored by Arthur Prior in the mid-1960s. But Prior’s own work on hybrid logic remains largely undiscussed. This is unfortunate, since hybridisation played a role that was both central to and problematic for his philosophical views on tense. In this paper I introduce hybrid logic from a contemporary perspective, and then examine the role it played in Prior’s work.
This article engages bell hooks's concept of “radical black subjectivity” through the lens of the Buddhist doctrine of no-self. Relying on the Zen theorist Dōgen and on resources from Japanese aesthetics, I argue that non-attachment to the self clarifies hooks's claim that radical subjectivity unites our capacity for critical resistance with our capacity to appreciate beauty. I frame this argument in terms of hooks's concern that postmodernist identity critiques dismiss the identity claims of disempowered peoples. On the one hand, (...) identity critique has an emotional component, as it involves questioning the self and possibly letting go of aspects of that self in which a person has inevitably made emotional investments. On the other hand, it has an aesthetic component, as it opens a space for the creative crafting and recrafting of identity. Japanese aesthetics emphasizes that all aesthetic appreciation is accompanied by feelings of mournfulness, for the object of aesthetic appreciation is transient. Linking hooks's liberatory aesthetics with the resources of the Japanese tradition suggests that mournfulness in the face of self-loss necessarily accompanies all instances of critical resistance. Thus non-attachment becomes a useful framework in which to understand both the emotional and aesthetic components of empowered identity critique. (shrink)
Since the validity of Bell's inequalities implies the existence of joint probabilities for non-commuting observables, there is no universal consensus as to what the violation of these inequalities signifies. While the majority view is that the violation teaches us an important lesson about the possibility of explanations, if not about metaphysical issues, there is also a minimalist position claiming that the violation is to be expected from simple facts about probability theory. This minimalist position is backed by theorems due (...) to A. Fine and I. Pitowsky.Our paper shows that the minimalist position cannot be sustained. To this end,we give a formally rigorous interpretation of joint probabilities in thecombined modal and spatiotemporal framework of `stochastic outcomes inbranching space-time' (SOBST) (Kowalski and Placek, 1999; Placek, 2000). We show in this framework that the claim that there can be no joint probabilities fornon-commuting observables is incorrect. The lesson from Fine's theorem is notthat Bell's inequalities will be violated anyhow, but that an adequate modelfor the Bell/Aspect experiment must not define global joint probabilities. Thus we investigate the class of stochastic hidden variable models, whichprima facie do not define such joint probabilities. The reasonwhy these models fail supports the majority view: Bell's inequalities are notjust a mathematical artifact. (shrink)
A field-theoretic version of Wigner’s friend (1961) illustrates how the quantum measurement problem arises for field theory. Similarly, considering spacelike separate measurements of entangled fields by observers akin to Wigner’s friend shows the sense in which relativistic constraints make the measurement problem particularly difficult to resolve in the context of a relativistic field theory. We will consider proposals by Wigner (1961), Bloch (1967), Helwig and Kraus (1970), and Bell (1984) for resolving the measurement problem for quantum field theory. We (...) will conclude by considering the possibility of giving up rich dynamical explanation in the context of a many-maps formulation of relativistic quantum field theory. (shrink)
Some recent work in the philosophy of quantum mechanics has suggested that quantum systems can be thought of as non-separable and therefore non-individual, in some sense, in Bell and E.P.R. type situations. This suggestion is set in the context of previous work regarding the individuality of quantal particles and it is argued that such entities can be considered as individuals if their non-classical statistical correlations are understood in terms of non-supervenient relations holding between them. We conclude that such (...) relations are strongly non-supervenient in Cleland's sense and note a possible connection between this idea and the realist quantum logic programme. (shrink)
Violations of Bell's Inequality can only be reliably produced if some information about the apparatus setting on one wing is available on the other, requiring superluminal information transmission. In this paper I inquire into the minimum amount of information needed to generate quantum statistics for correlated photons. Reflection on informational constraints clarifies the significance of Fine's Prism models, and allows the construction of several models more powerful than Fine's. These models are more efficient than Fine claims to be possible (...) and work for the full range of possible analyzer settings. It also demonstrates that the division of theories into those that violate parameter independence and those that violate outcome independence sheds no light on the question of superluminal information transmission. (shrink)
Fine has recently proved the surprising result that satisfaction of the Bell inequality in a Clauser-Horne experiment implies the existence of joint probabilities for pairs of noncommuting observables in the experiment. In this paper we show that if probabilities are interpreted in the von Mises-Church sense of relative frequencies on random sequences, a proof of the Bell inequality is nonetheless possible in which such joint probabilities are assumed not to exist. We also argue that Fine's theorem and related (...) results do not impugn the common view that local realists are committed to the Bell inequality. (shrink)
It is a well known fact that a common common causal explanation of the EPR scenario which consists in providing a local, non-conspiratorial common common cause system for a set of EPR correlations is excluded by various Bell inequalities. But what if we replace the assumption of a common common cause system by the requirement that each correlation of the set has a local, non-conspiratorial separate common cause system? In the paper we show that this move does not yield (...) a solution by providing a general recipe how to derive any Bell(δ) inequality---that is an inequality differing from some Bell inequality in a term of order of δ---from the assumption that an appropriate set of almost perfect anticorrelations has a separate common causal explanation. (shrink)
In 1935, Einstein, Podolsky, and Rosen (EPR) published an important paper in which they claimed that the whole formalism of quantum mechanics together with what they called a “Reality Criterion” imply that quantum mechanics cannot be complete. That is, there must exist some elements of reality that are not described by quantum mechanics. They concluded that there must be a more complete description of physical reality involving some hidden variables that can characterize the state of affairs in the world in (...) more detail than the quantum mechanical state. This conclusion leads to paradoxical results. -/- As Bell proved in 1964, under some further but quite plausible assumptions, this conclusion that there are hidden variables implies that, in some spin-correlation experiments, the measured quantum mechanical probabilities should satisfy particular inequalities (Bell-type inequalities). The paradox consists in the fact that quantum probabilities do not satisfy these inequalities. And this paradoxical fact has been confirmed by several laboratory experiments since the 1970s. -/- Some researchers have interpreted this result as showing that quantum mechanics is telling us nature is non-local, that is, that particles can affect each other across great distances in a time too brief for the effect to have been due to ordinary causal interaction. Others object to this interpretation, and the problem is still open and hotly debated among both physicists and philosophers. It has motivated a wide range of research from the most fundamental quantum mechanical experiments through foundations of probability theory to the theory of stochastic causality as well as the metaphysics of free will. (shrink)
The Schopenhauers and England Danzig Arthur Schopenhauer was born in the then free city of Danzig on 22 February (Byron had been born in London on 22 ...
We will formulate two Bell arguments. Together they show that if the probabilities given by quantum mechanics are approximately correct, then the properties exhibited by certain physical systems must be nontrivially dependent on thetypes of measurements performedand eithernonlocally connected orholistically related to distant events. Although a number of related arguments have appeared since John Bell's original paper (1964), they tend to be either highly technical or to lack full generality. The following arguments depend on the weakest of premises, (...) and the structure of the arguments is simpler than most (without any loss of rigor or generality). The technical simplicity is due in part to a novel version of the generalized Bell inequality. The arguments are self contained and presuppose no knowledge of quantum mechanics. We will also offer a Dutch Book argument for measurement type dependence. (shrink)
In this paper I discuss how Bohm's interpretation models spin measurements and how the two ways in which spin is a contextual property pertains to the Kochen-Specker theorem. I then present locality principles from which a Bell Inequality can be derived, and I identify which of the locality principles Bohm's interpretation violates at which times. I also present reasons why the spin vector should not be attributed to the Bohmian particles.
The purpose of this paper is to argue that the hybrid formalism fits naturally in the context of David Lewis’s counterfactual logic and that its introduction into this framework is desirable. This hybridization enables us to regard the inference “The pig is Mary; Mary is pregnant; therefore the pig is pregnant” as a process of updating local information (which depends on the given situation) by using global information (independent of the situation). Our hybridization also has the following technical advantages: (i) (...) it preserves the completeness and decidability of Lewis’s logic; (ii) it allows us to characterize the Limit Assumption as a proof-rule with some side-conditions; and (iii) it enables us to establish a general Kripke completeness result by using the proof-rule corresponding to the Limit Assumption. Keywords Counterfactual logic - David Lewis - Contextually definite description - Hybrid logic - Arthur Prior - The limit assumption - Strong completeness - Decidability - Bisimulation - Pure completeness. (shrink)
There is no question Arthur Ripstein’s Force and Freedom is an engaging and powerful book which will inform legal philosophy, particularly Kantian theories, for years to come. The text explores with care Kant’s legal and political philosophy, distinguishing it from his better known moral theory. Nor is Ripstein’s book simply a recounting of Kant’s legal and political theory. Ripstein develops Kant’s views in his own unique vision illustrating fresh ways of viewing the entire Kantian project. But the same strength (...) and coherence which ties the book to Kant’s important values of independence blinds the work to our shared moral ties grounded in other political values. Ripstein’s thoughts on punishment are novel in that he embeds criminal law, both in its retributivist and consequentialist facets, into Kant’s overarching political philosophy to show how criminal law can be seen as one aspect of the supremacy of public law. But a criminal law solely focused on the preservation of freedom takes little notice of the ways criminal law need expand its view to account for how a polity can restore the victim of a crime back to civic equality, reincorporate offenders after they have been punished and cannot leave past offenders isolated and likely to reoffend, resulting in the rotating door prison system and communities of innocents who remain preyed upon by career criminals. Lastly, a political theory that does not prize our civic bonds will ignore the startling balkanization of our criminal punishment practices, where policing, arresting and imprisonment become tools of racial and social oppression. In illustrating the benefits in viewing criminal law as a coherent part of Kant’s political theory of freedom, Ripstein also highlights what is absent. It then becomes clear that though Kant presents one important facet of punishment, only a republican political theory can meet the most pressing moral demands of punishment by reminding us that criminal law must be used to preserve and strengthen civic society. (shrink)
Institute of Theoretical Physics, Exact Sciences Sidlerstrasse 5, University of Bern, CH-3012 Bern Switzerland portmann{at}itp.unibe.ch' + u + '@' + d + ''//--> awuethr{at}itp.unibe.ch' + u + '@' + d + ''//--> John Bell showed that a big class of local hidden-variable models stands in conflict with quantum mechanics and experiment. Recently, there were suggestions that empirically adequate hidden-variable models might exist which presuppose a weaker notion of local causality. We will show that a Bell-type inequality can be (...) derived also from these weaker assumptions. Introduction The EPR-Bohm experiment Local causality Bell's inequality from separate common causes 4.1 A weak screening-off principle 4.2 Perfect correlation and ‘determinism’ 4.3 A minimal theory for spins 4.4 No conspiracy Discussion. (shrink)
The paper develops models of statistical experiments that combine propensities with frequencies, the underlying theory being the branching space-times (BST) of Belnap (1992). The models are then applied to analyze Bell's theorem. We prove the so-called Bell-CH inequality via the assumptions of a BST version of Outcome Independence and of (non-probabilistic) No Conspiracy. Notably, neither the condition of probabilistic No Conspiracy nor the condition of Parameter Independence is needed in the proof. As the Bell-CH inequality is most (...) likely experimentally falsified, the choice is this: contrary to the appearances, experimenters cannot choose some measurement settings, or some transitions, with spacelike related initial events, are correlated; or both. (shrink)
In [3] John S. Bell proposed how to associate particle trajectories with a lattice quantum field theory, yielding what can be regarded as a |Ψ|2-distributed Markov process on the appropriate configuration space. A similar process can be defined in the continuum, for more or less any regularized quantum field theory; such processes we call Bell-type quantum field theories. We describe methods for explicitly constructing these processes. These concern, in addition to the definition of the Markov processes, the efficient (...) calculation of jump rates, how to obtain the process from the processes corresponding to the free and interaction Hamiltonian alone, and how to obtain the free process from the free Hamiltonian or, alternatively, from the one-particle process by a construction analogous to “second quantization.” As an example, we consider the process for a second quantized Dirac field in an external electromagnetic field. (shrink)
As a means of conveying difficult personal experiences, illness narratives and their analysis have the potential to increase awareness of patients’ lives and circumstances. Becoming sensitised to the linguistic texture of narrative offers readers a means of increasing narrative understanding. Using the fictional narrative of The Bell Jar , this paper outlines a novel method for exploring the language of illness narratives. Corpus stylistics provides new insights into narrative texture and demonstrates the importance of recurrent linguistic features in shaping (...) meaning. The paper concludes by proposing the application of a similar methodology to non-fictional illness narratives in therapeutic contexts. (shrink)
The paper intends to provide an algebraic framework in which subluminal causation can be analysed. The framework merges Belnap's 'outcomes in branching time' with his 'branching space-time' (BST). it is shown that an important structure in BST, called 'family of outcomes of an event', is a boolean algebra. We define next non-stochastic common cause and analyse GHZ-Bell theorems. We prove that there is no common cause that accounts for results of GHZ-Bell experiment but construct common causes for two (...) other quantum mechanical setups. Finally, we investigate why some setups allow for common causes whereas other setups do not. (shrink)
This is a review of the book Quantum [Un]speakables: From Bell to Quantum Information. Reinhold A. Bertlmann and Anton Zeilinger (editors). xxii + 483 pp. Springer-Verlag, 2002. $89.95.
The “information age” is often thought in terms of the digital revolution that begins with Turing’s 1937 paper, “On computable numbers, with an application to the Entscheidungsproblem.” However, this can only be partially correct. There are two aspects to Turing’s work: one dealing with questions of computation that leads to computer science and another concerned with building computing machines that leads to computer engineering. Here, we emphasize the latter because it shows us a Turing connected with mechanisms of information flow (...) rather than solely with the mathematical and logical problems of computability for which he is better known. Our reasons for doing so will become clear in what follows. In fact, the 1937 paper just mentioned provides a general schematic for building a computing machine; this mechanical connection puts Turing on an historical continuum with others who discovered mechanisms to cope with information. Of those involved in this quest in the 19th Century, two people in particular, Edison and Bell, had explicit visions of an information age that would follow from their work. Because they were explicitly aware of what they were doing and partly brought it about long before 1937, they (along with others) deserve substantial credit for the information age they set out to inaugurate. Regarding one purely mechanical and non-electronic technology, Edison noted ten uses for the phonograph, including not only the replication of sound, but also “connection with the telephone, so as to make that instrument an auxiliary in the transmission of permanent and invaluable records, instead of being the recipient of momentary and fleeting communication” (Edison, 1878). Even though the telephone was only two years old when Edison wrote of a network made up of mechanical hard storage systems and people connected by wire, the network vision was already clearly in his head.. (shrink)
A class of probability functions is studied. This class contains the probability functions of half-spin particles and spinning classical objects. A notion of realisability for these functions is defined. In terms of this notion two versions of Bell's theorem and their inverses are stated and proved.
In the context of stochastic hidden variable theories, Howard has argued that the role of separability—spatially separated systems possess distinct real states—has been underestimated. Howard claims that separability is equivalent to Jarrett‘s completeness: this equivalence should imply that the Bell theorem forces us to give up either separability or locality. Howard's claim, however, is shown to be ill founded since it is based on an implausible assumption. The necessity of sharply distinguishing separability and locality is emphasized: a quantitative formulation (...) of separability, due to D'Espagnat, is reviewed and found unsatisfactory, in that it basically conflates separability and locality in a single notion. Finally, the possibility of an ‘Einsteinian’ nonseparable realism, envisaged by Shimony, is reviewed and found also to be implausible. (shrink)
The hidden-variable theorems of Bell and followers depend upon an assumption, namely the hidden-variable assumption, that conflicts with the precepts of quantum philosophy. Hence from an orthodox quantum perspective those theorems entail no faster-than-light transfer of information. They merely reinforce the ban on hidden variables. The need for some sort of faster-than-light information transfer can be shown by using counterfactuals instead of hidden variables. Shimony’s criticism of that argument fails to take into account the distinction between no-faster-than-light connection in (...) one direction and that same condition in both directions. The argument can be cleanly formulated within the framework of a fixed past, open future interpretation of quantum theory, which neatly accommodates the critical assumptions that the experimenters are free to choose which experiments they will perform. The assumptions are compatible with the Tomonaga- Schwinger formulation of quantum field theory, and hence with orthodox quantum precepts, and with the relativistic requirement that no prediction pertaining to an outcome in one region can depend upon a free choice made in a region spacelike-separated from the first. (shrink)
After recalling proofs of the Bell inequality based on the assumptions of separability and of noncontextuality, the most general noncontextual contrapositive conditional probabilities consistent with the Aspect experiment are constructed. In general these probabilities are not all positive.
Standard proofs of generalized Bell theorems, aiming to restrict stochastic, local hidden-variable theories for quantum correlation phenomena, employ as a locality condition the requirement of conditional stochastic independence. The connection between this and the no-superluminary-action requirement of the special theory of relativity has been a topic of controversy. In this paper, we introduce an alternative locality condition for stochastic theories, framed in terms of the models of such a theory (§2). It is a natural generalization of a light-cone determination (...) condition that is essentially equivalent to mathematical conditions that have been used to derive Bell inequalities in the deterministic case. Further, it is roughly equivalent to a condition proposed by Bell that, in one investigation, needed to be supplemented with a much stronger assumption in order to yield an inequality violated by some quantum mechanical predictions. It is shown here that this reflects a very general situation: from the proposed locality condition, even adding the strict anticorrelation condition and the auxiliary hypotheses needed to derive experimentally useful (and theoretically telling) inequalities, no Bell-type inequality is derivable. (These independence claims are the burden of §4.) A certain limitation on the scope of the proposed stochastic locality condition is exposed (§5), but it is found to be rather minor. The conclusion is thus supported that conditional stochastic independence, however reasonable on other grounds, is essentially stronger than what is required by the special theory.Our results stand in apparent contradiction with a class of derivations purporting to obtain generalized Bell inequalities from locality alone. It is shown in Appendix (B) that such proofs do not achieve their goal. This fits with our conclusion that generalized Bell theorems are not straightforward generalizations of theorems restricting deterministic hidden-variable theories, and that, in fact, such generalizations do not exist. This leaves open the possibility that a satisfactory, non-deterministic account of the quantum correlation phenomena can be given within the framework of the special theory. (shrink)
Standard derivations of the Bell inequalities assume a common common cause system that is a common screener-off for all correlations and some additional assumptions concerning locality and no-conspiracy. In a recent paper (Grasshoff et al., 2005) Bell inequalities have been derived via separate common causes assuming perfect correlations between the events. In the paper it will be shown that the assumptions of this separate-common-cause-type derivation of the Bell inequalities in the case of perfect correlations can be reduced (...) to the assumptions of common-common-cause-system-type derivation. However, in the case of non-perfect correlations a non-reducible separate-common-cause-type derivation of some Bell-like inequalities can be given. The violation of these Bell-like inequalities proves Szabó's (2000) conjecture concerning the non-existence of a local, non-conspiratorial, separate-common-cause-model for a delta δ-neighborhood of perfect EPR correlations. (shrink)
According to a widespread view, the Bell theorem establishes the untenability of so-called 'local realism'. On the basis of this view, recent proposals by Leggett, Zeilinger and others have been developed according to which it can be proved that even some non-local realistic theories have to be ruled out. As a consequence, within this view the Bell theorem allows one to establish that no reasonable form of realism, be it local or non-local, can be made compatible with the (...) (experimentally tested) predictions of quantum mechanics. In the present paper it is argued that the Bell theorem has demonstrably nothing to do with the 'realism' as defined by these authors and that, as a consequence, their conclusions about the foundational significance of the Bell theorem are unjustified. (shrink)
The separable hidden variables theory (Bhave [1986]) of Aspect's [1982] four single channel polarizers is developed further to consider possible modified Aspect's experiment with four double channel polarizers. It is shown that Aspect's commutator is not a truly stochastic commutator, and that until such a truly stochastic commutator is devised, experiments based on Bell's inequalities (like those of Aspect's) cannot be adequate experimental tests of quantum nonseparability.
Bell's proof purports to show that any hidden variable theory satisfying a physically reasonable locality condition is characterized by an inequality which is inconsistent with the quantum statistics. It is shown that Bell's inequality actually characterizes a feature of hidden variable theories which is much weaker than locality in the sense considered physically motivated. We consider an example of non-local hidden variable theory which reproduces the quantum statistics (and hence violates Bell's inequality). A simple extension of (...) the theory, which preserves the non-local character, alters the statistics in such a way that Bell's inequality is satisfied. (shrink)
This paper explores the extreme but well-argued-for thesis that the indirect object of an aesthetic experience of serious art is the human soul of the person having the experience. The author of the thesis was Fr. Arthur Little S.J. a mid twentieth-century Irishman, professional philosopher and philosophical popularizer. The paper treats Little’s thesis seriously: comparisons are drawn with Kant, which may be of interest even to those hostile to Little’s central assertion. Little makes a brilliant analysis of a ‘free-beauty’, (...) making the sharpest contrast between this and the most serious art, tragedy. Tragedy, Little holds Kant not able to cope with. One agrees. (shrink)
Arthur Anderson & Co. has made a significant contribution to assist and encourage the teaching of business ethics. They provided assistance initially through workshops and curriculum materials; currently they are using campus coordinators to disseminate information and materials. The curriculum materials can be used by the instructor to assist students in practicing their moral reasoning skills and cover four academic areas: Accounting, Finance, Marketing, and Management. These materials include business ethics video vignettes, suggestions on presentation methods, guidelines for implementing (...) a stakeholders' analysis approach to ethical reasoning, and possible discussion questions. The vignettes present ethical dilemmas that persons may encounter in entry level positions. We have used the vignettes, the accompanying discussion questions, and the suggested stakeholder analysis in class presentations. This paper presents a discussion of the basic concepts associated with cooperative learning, an example of the implementation of cooperative learning techniques using the Arthur Andersen Accounting Ethics Vignettes, and empirical results of the influence of these particular group discussions on the students' ethical responses. We did not attempt to measure whether the individuals' moral levels changed, but whether the group discussions stimulated any changes in the students attitudes toward the particular ethical dilemma they viewed. (shrink)
The paper extends the framework of outcomes in branching space-time (Kowalski and Placek [1999]) by assigning probabilities to outcomes of events, where these probabilities are interpreted either epistemically or as weighted possibilities. In resulting models I define the notion of common cause of correlated outcomes of a single event, and investigate which setups allow for the introduction of common causes. It turns out that a deterministic common cause can always be introduced, but (surprisingly) only special setups permit the introduction of (...) truly stochastic common causes. I analyse next the Bell-Aspect experiment and derive the Bell-CH inequalities. I observe that we postulate there not a common cause for outcomes of a single event but rather a common common cause that accounts for outcomes of many events, where 'events' mean 'measurements with (different) directions of polarization'. Since the inequalities are violated, I claim that no causal story can be told about the Bell correlations, where causality is subliminal and restricted by screening-off condition. Similarly, given certain intuitive principles, no deterministic story can be told about these correlations. (shrink)
This page contains references to the key original papers on the longstanding debate about the completeness of Quantum Mechanics (QM), particularly Bell's Theorem. It is not intended to be a definitive collection or exposition on the matter. Quite the opposite, it is limited to the 3 essential papers in the series, which were written over a nearly 50 year time span. These amazing papers lay out a complex line of reasoning involving our fundamental understanding of reality in the physical (...) sense. Each is brilliant and ground-breaking in its own right, building to a powerful conclusion regarding the matter. (shrink)
... LIMITS OF MEANING Arthur O. Lovejoy Professor Emeritus, Department of Philosophy, The Johns Hopkins University Nearly thirty years ago Professor Singer ...
In the light of recent discussions we present the main results of our project, the aim of which was to derive a Bell-type inequality from the weakest possible assumptions. A principal outcome of the project is that a Bell-type inequality can be derived from the assumption of separate common causes (Graßhoff, Portmann and Wüthrich 2005), even without the assumption of perfectly anticorrelating event types (Portmann and Wüthrich 2007). We also address the critique that in Graßhoff et al. (2005) (...) we implicitly assume a common common cause (Hofer-Szabó forthcoming). (shrink)
