What would it mean to apply quantum theory, without restriction and without involving any notion of measurement and state reduction, to the whole universe? What would realism about the quantum state then imply? This book brings together an illustrious team of philosophers and physicists to debate these questions. The contributors broadly agree on the need, or aspiration, for a realist theory that unites micro- and macro-worlds. But they disagree on what this implies. Some argue that if unitary quantum evolution has (...) unrestricted application, and if the quantum state is taken to be something physically real, then this universe emerges from the quantum state as one of countless others, constantly branching in time, all of which are real. The result, they argue, is many worlds quantum theory, also known as the Everett interpretation of quantum mechanics. No other realist interpretation of unitary quantum theory has ever been found. Others argue in reply that this picture of many worlds is in no sense inherent to quantum theory, or fails to make physical sense, or is scientifically inadequate. The stuff of these worlds, what they are made of, is never adequately explained, nor are the worlds precisely defined; ordinary ideas about time and identity over time are compromised; no satisfactory role or substitute for probability can be found in many worlds theories; they can't explain experimental data; anyway, there are attractive realist alternatives to many worlds. Twenty original essays, accompanied by commentaries and discussions, examine these claims and counterclaims in depth. They consider questions of ontology - the existence of worlds; probability - whether and how probability can be related to the branching structure of the quantum state; alternatives to many worlds - whether there are one-world realist interpretations of quantum theory that leave quantum dynamics unchanged; and open questions even given many worlds, including the multiverse concept as it has arisen elsewhere in modern cosmology. A comprehensive introduction lays out the main arguments of the book, which provides a state-of-the-art guide to many worlds quantum theory and its problems. (shrink)

Following a proposal of Vaidman The Stanford encyclopaedia of philosophy, 2014) The probable and the improbable: understanding probability in physics, essays in memory of Itamar Pitowsky, 2011), Sebens and Carroll , have argued that in Everettian quantum theory, observers are uncertain, before they complete their observation, about which Everettian branch they are on. They argue further that this solves the problem of making sense of probabilities within Everettian quantum theory, even though the theory itself is deterministic. We note some problems (...) with these arguments. (shrink)

I sketch a line of thought about consciousness and physics that gives some motivation for the hypothesis that conscious observers deviate—perhaps only very subtly and slightly—from quantum dynamics. Although it is hard to know just how much credence to give this line of thought, it does add motivation for a stronger and more comprehensive programme of quantum experiments involving quantum observers.

I propose a new class of interpretations, real world interpretations, of the quantum theory of closed systems. These interpretations postulate a preferred factorization of Hilbert space and preferred projective measurements on one factor. They give a mathematical characterisation of the different possible worlds arising in an evolving closed quantum system, in which each possible world corresponds to a (generally mixed) evolving quantum state. In a realistic model, the states corresponding to different worlds should be expected to tend towards orthogonality as (...) different possible quasiclassical structures emerge or as measurement-like interactions produce different classical outcomes. However, as the worlds have a precise mathematical definition, real world interpretations need no definition of quasiclassicality, measurement, or other concepts whose imprecision is problematic in other interpretational approaches. It is natural to postulate that precisely one world is chosen randomly, using the natural probability distribution, as the world realised in Nature, and that this world’s mathematical characterisation is a complete description of reality. (shrink)

There has been an upsurge of interest lately in developing Wigner’s hypothesis that conscious observation causes collapse by exploring dynamical collapse models in which some purportedly quantifiable aspect of consciousness resist superposition. Kremnizer–Ranchin, Chalmers–McQueen and Okon–Sebastián have explored the idea that collapse may be associated with a numerical measure of consciousness. More recently, Chalmers–McQueen have argued that any single measure is inadequate because it will allow superpositions of distinct states of equal consciousness measure to persist. They suggest a satisfactory model (...) needs to associate collapse with a set of measures quantifying aspects of consciousness, such as the “Q-shapes” defined by Tononi et al. in their “integrated information theory” of consciousness. I argue here that Chalmers–McQueen’s argument against associating a single measure with collapse requires a precise symmetry between brain states associated with different experiences and thus does not apply to the only case where we have strong intuitions, namely human observers. In defence of Chalmers–McQueen’s stance, it might be argued that idealized artificial information processing networks could display such symmetries. However, I argue that the most natural form of any theory that postulates a map from network states to mind states is one that assigns identical mind states to isomorphic network states. This suggests that, if such a map exists, no familiar components of mind states, such as viewing different colours, or experiencing pleasure or pain, are likely to be related by symmetries. (shrink)

A hodological law causes the evolution of the universe to tend to follow particular types of path. I give simple illustrations in toy models and discuss how Kolmogorov complexity characterises the extent to which hodological laws explain, rather than merely describe, data.

A quantum measurement-like event can produce any of a number of macroscopically distinct results, with corresponding macroscopically distinct gravitational fields, from the same initial state. Hence the probabilistically evolving large-scale structure of space-time is not precisely or even always approximately described by the deterministic Einstein equations.Since the standard treatment of gravitational wave propagation assumes the validity of the Einstein equations, it is questionable whether we should expect all its predictions to be empirically verified. In particular, one might expect the stochasticity (...) of amplified quantum indeterminacy to cause coherent gravitational wave signals to decay faster than standard predictions suggest. This need not imply that the radiated energy flux from gravitational wave sources differs from standard theoretical predictions. An underappreciated bonus of gravitational wave astronomy is that either detecting or failing to detect predicted gravitational wave signals would constrain the form of the semi-classical theory of gravity that we presently lack. (shrink)

Hugh Everett III died of a heart attack in July 1982 at the age of 51. Almost 26 years later, a New York Times obituary for his PhD advisor, John Wheeler, mentioned him and Richard Feynman as Wheeler’s most prominent students. Everett’s PhD thesis on the relative state formulation of quantum mechanics, later known as the “Many Worlds Interpretation”, was published (in its edited form) in 1957, and later (in its original, unedited form) in 1973, and since then has given (...) rise to one of the most radical schools of thought in the foundations of quantum theory. Several years ago two conferences held in Oxford and in the Perimeter Institute celebrated the occasion of 50 years to the first publication of Everett’s thesis. The book Many worlds? grew out from contributions to these conferences, but, as its editors emphasize, it is more than mere conference proceedings. Instead, an attempt was made to assemble an impressive collection of papers which together illustrate the promise of the many worlds interpretation and the obstacles it faces. 23 papers divided into six sections follow an introduction by Simon Saunders, one of Oxford’s fiercest Everettians. The first four sections cover two thorny issues that have been flagged by contemporary opponents to the many worlds interpretation, namely, the problem of ontology and the problem of probability, while the fifth discusses alternatives to Everett such as Bohmian mechanics and information–theoretic approaches to quantum theory. The sixth section seems to be a wild card, hosting several papers unrelated to each other, including one of the most interesting contributions to this volume on the history of Everett’s thesis and his (some may say all too) short academic career. Each section concludes with transcripts of the discussion session that took place after the talks, thus giving an additional emphasis to the points of contention. Apart from general comments on the volume, in what follows I would like to concentrate on few papers I found especially illuminating. Start with ontology.. (shrink)

This article joins with others in the same issue to celebrate the career of Robert B. Zajonc who was a broad, as well as a deeply talented, psychologist. Beyond his well-known focus in social psychology, the work of Zajonc also involved, at one time or another, forays into nearly every other subfield of psychology. This article focuses specifically on his studies that extended into biopsychology, which deserve special highlighting in order to be recognized alongside his many major achievements in emotion (...) and related social topics. The biopsychological focus is offered here in the hope that all his diverse contributions be savored together when celebrating the complete psychology of Robert Zajonc. (shrink)

A growing body of empirical evidence suggests that folk knowledge attribution practices regarding some epistemological thought experiments differ significantly from the consensus found in the philosophical literature. More specifically, laypersons are likely to ascribe knowledge in the so-called Authentic Evidence Gettier-style cases, while most philosophers deny knowledge in these cases. The intuitions shared by philosophers are often used as evidence in favor (or against) certain philosophical analyses of the notion of knowledge. However, the fact that these intuitions are not universal, (...) as non-philosophers do not sympathize with verdicts made by philosophers, is problematic and requires some explanation. Recently, a promising theoretical approach emerged that could be used to explain away unexpected folk knowledge attributions. According to the protagonist projection hypothesis, when subjects answer questions about some hypothetical scenario, their judgments might result from adopting the cognitive perspective of the protagonist in the given scenario. Previous experimental findings suggest protagonist projection might be responsible for problematic knowledge attributions in Gettier-style cases. This paper reports data collected in an experiment which focused on five different Authentic Evidence Gettier-style scenarios and investigated the impact of protagonist projection on folk knowledge ascriptions in such cases. The results bring some support to the protagonist projection hypothesis, but do not allow to explain away a substantial number of problematic folk knowledge attributions. (shrink)

Francis Ysidro Edgeworth’s unduly neglected monograph New and Old Methods of Ethics (1877) advances a highly sophisticated and mathematized account of social well-being in the utilitarian tradition of his 19th-century contemporaries. This article illustrates how his usage of the ‘calculus of variations’ was combined with findings from empirical psychology and economic theory to construct a consequentialist axiological framework. A conclusion is drawn that Edgeworth is a methodological predecessor to several important methods, ideas, and issues that continue to be discussed in (...) contemporary social well-being studies. (shrink)

This volume collects essays which are thematically connected through the work of Kent Emery Jr., to whom the volume is dedicated. A main focus lies on the attempts to bridge the gap between mysticism and a systematic approach to medieval philosophical thought.

Since the early seventeenth century of Bacon, Gallileo and Descartes, the relations between science and religion as well as mind and body have remained volatile fault lines of conflict. The controversies surrounding these relations are as alive and pressing now as at any point over the course of the past four centuries. Adrian Johnston's transcendental materialism offers a new theoretical approach to these issues. Arming himself with resources provided by German idealism, Marxism, psychoanalysis, the life sciences and contemporary philosophical (...) developments, Johnston formulates an account of subjectivity that, although being both materialist and naturalist, does full justice to human beings as irreducible to natural matter alone. At the same time he argues against relapses into idealisms, dualisms and spiritualisms. Adventures in Transcendental Materialism elaborates Johnston's position through critical engagements with some of today's most important thinkers including Slavoj Žižek, Alain Badiou, Catherine Malabou, Jean-Claude Milner, Martin Hägglund, William Connolly, and Jane Bennett"--Back cover. (shrink)

Religion: A Study in Beauty, Truth, and Goodness covers the wide array of elements, including the concepts of ultimate being, scripture, ritual, morality, and beauty, which make up the fascinating entity known as religion. Taking a phenomenological approach that emphasizes the standpoint of the religious believer--a view from the inside of religion--Kent Richter uses the categories of experience, belief, and behavior ("Beauty, Truth, and Goodness") as a way to think about religion in general. This approach helps students understand both (...) the great variety in religious traditions and the internal coherence that religion holds for its practitioners. (shrink)

RésuméCet article défend une approche à la philosophic et à l'éthique environnementale qui a originalement été avancée par Aldo Leopold. Selon cet auteur, l'éthique peut être comprise, d'un point de vue biologique, comme la forme spécifiquement humaine de la symbiose. La question cruciate de notre époque est de savoir si les humains peuvent coexister avec l'environnement global en un état de symbiose. La philosophie et les sciences humaines en général peuvent contribuer grandement à l'atteinte de ce but, à cause de (...) la façon très spéciale dont le caractère même des actions et des æuvres humaines peut être amplifié par l'écosystème. Je critique un argument thermodynamique qui a été formulé contre la possibilité de la symbiose humaine; et je mets en garde contre les tendances à l'autoritarisme et è l'évasion par l'introspection qui sont typiques des cultures en état de crise écologique. (shrink)

Psychopaths constitute less than 1% of the general population, but they commit a much larger proportion of crime and violence in society. This volume chronicles the latest science of psychopathy, various ways that psychopaths challenge the criminal justice system, and the major ethical issues arising from this fascinating condition.

This review takes a historical perspective on concepts in the psychology of motivation and emotion, and surveys recent developments, debates and applications. Old debates over emotion have recently risen again. For example, are emotions necessarily subjective feelings? Do animals have emotions? I review evidence that emotions exist also as core psychological processes, which have objectively detectable features, and which can occur either with subjective feelings or without them. Evidence is offered also that studies of emotion in animals can give new (...) insights into human emotions. Beyond emotion, motivation concepts also have changed over decades, and debates still continue. Motivation was once thought in terms of aversive drives, and reward was thought of in terms of drive reduction. Motivation-as-drive concepts were largely replaced by motivation-as-incentive concepts, yet aversive drive concepts still occasionally surface in motivation neuroscience today. Among incentive motivation concepts, incentive salience is a core process, mediated by brain mesocorticolimbic systems (dopamine-related systems) and sometimes called ‘wanting’ (in quotation marks), to distinguish it from cognitive forms of desire (wanting without quotation marks). Incentive salience as ‘wanting’ is separable also from pleasure ‘liking’ for the same reward, which has important implications for several human clinical disorders. Ordinarily, incentive salience adds motivational urgency to cognitive desires, but ‘wanting’ and cognitive desires can dissociate in some conditions. Excessive incentive salience can cause addictions, in which excessive ‘wanting’ can diverge from cognitive desires. Conversely, lack of incentive salience may cause motivational forms of anhedonia in depression or schizophrenia, whereas a negatively-valenced form of ‘fearful salience’ may contribute to paranoia. Finally, negative ‘fear’ and ‘disgust’ have both partial overlap but also important neural differences. (shrink)

When Kent Nerburn received a letter from a young woman questioning her calling to spend her life in the arts, the writer and artist was struck by how closely her questions mirrored the doubts and yearnings of his own youth. Nerburn resolved that he would write his own letter: a letter of welcome and encouragement to all artists setting out on the same strange and magical journey, sharing the wisdom of a life spent working in the arts. From struggles (...) with money and the bitterness of rejection, to spiritual questions of inspiration and authenticity, Dancing With the Gods offers insight, solace and courage to help artists on the winding road to artistic fulfilment. Tender and joyous, it is a celebration of art's power to transform the darkest of human experience and give voice to the grandest of human hopes. (shrink)

"In Realms of Legal Interpretation, Kent Greenawalt focuses on how courts decide what is legally forbidden or authorized, and how context shapes their decisions. The problem, he argues, is that we do not, and never have, agreed on all the details of the standards United States judges should employ - like everyone else, judges have different ideas of what constitutes good common sense. Moreover, circumstance regularly throws up hurdles... Different judges react in different ways. Acknowledging that courts will never (...) agree upon a uniform approach to applying norms and interpreting the law, Greenawalt's aim is to provide a capacious, user-friendly model for approaching hard cases sensibly in both public and private law. Just as importantly, the book serves as a pithy guide to the major forms of legal interpretation for nonlawyers" --. (shrink)

Thought experiments play a role in science and in some central parts of contemporary philosophy. They used to play a larger role in philosophy of science, but have been largely abandoned as part of the field’s “practice turn”. This chapter discusses possible roles for thought experimentation within a practice-oriented philosophy of science. Some of these roles are uncontroversial, such as exemplification and aiding discovery. A more controversial role is the reliance on thought experiments to justify philosophical claims. It is proposed (...) that if we adopt an underlying empiricist view of concepts, then thought experiments can be seen as affording us contact with scientific practice, despite their seemingly a priori character. The advantages and drawbacks of thought experiments are discussed via comparison with case studies, on the one, and simulations on the other hand. The chapter closes with some remarks on how to combine thought experiments with other methods. (shrink)

Thought experiments play a role in science and in some central parts of contemporary philosophy. They used to play a larger role in philosophy of science, but have been largely abandoned as part of the field’s “practice turn”. This chapter discusses possible roles for thought experimentation within a practice-oriented philosophy of science. Some of these roles are uncontroversial, such as exemplification and aiding discovery. A more controversial role is the reliance on thought experiments to justify philosophical claims. It is proposed (...) that if we adopt an underlying empiricist view of concepts, then thought experiments can be seen as affording us contact with scientific practice, despite their seemingly a priori character. The advantages and drawbacks of thought experiments are discussed via comparison with case studies, on the one, and simulations on the other hand. The chapter closes with some remarks on how to combine thought experiments with other methods. (shrink)

Different brain mechanisms seem to mediate wanting and liking for the same reward. This may have implications for the modular nature of mental processes, and for understanding addictions, compulsions, free will and other aspects of desire. A few wanting and liking phenomena are presented here, together with discussion of some of these implications.

China is the world’s second largest economy and the largest emitter of carbon dioxide, yet we know little about environmental proactivity in the most populated country in the world. We address this gap through a survey of 161 Chinese companies with two respondents per firm (N = 322), where we seek to identify the antecedents and consequences of environmental proactivity. We identify two categorizations of environmental proactivity: Environmental operational improvements and environmental reporting. We find that ecological motivations and regulatory stakeholder (...) pressure are positively related to both types of environmental proactivity, and external stakeholder pressure is negatively related to environmental reporting. Furthermore, we find that (1) if a firm is environmentally proactive (as it relates to either measure) and they are ecologically motivated, there is a positive and significant cost advantage, and (2) if a firm makes use of environmental operational improvement and they are competitively motivated, there is a positive and significant reputation advantage. Implications for researchers, managers, and policy-makers in China are discussed. (shrink)

John Scottus Eriugena (d. ca. 877) is regarded as the most important philosopher and theologian in the Latin West from the death of Boethius until the thirteenth century. He incorporated his understanding of Latin sources, Ambrose, Augustine, Boethius and Greek sources, including the Cappadocian Fathers, Pseudo-Dionysius, and Maximus Confessor, into a metaphysics structured on Aristotle's Categories, from which he developed Christian Neoplatonist theology that continues to stimulate 21st-century theologians. This collection of essays provides an overview of the latest scholarship on (...) various aspects of Eriugena's thought and writings, including his Irish background, his use of Greek theologians, his Scripture hermeneutics, his understanding of Aristotelian logic, Christology, and the impact he had on contemporary and later theological traditions. Contributors: David Albertson, Joel Barstad, John Contreni, Christophe Erismann, John Gavin, Adrian Guiu, Michael Harrington, Catherine Kavanagh, A. Kijewska, Stephen Lahey, Elena Lloyd-Sidle, Bernard McGinn, Ernesto Sergio Mainoldi, Dermot Moran, Giulio D'Onofrio, Willemien Otten, and Alfred Siewers. (shrink)

From widespread unemployment and mounting international hostilities, every day we are swept into more political chaos--so one brave man looks to the Star Wars universe for answers to our most urgent problems. "You can't stop the change -- anymore than you can stop the sun from setting." Anakin Skywalker was never able to live with this wisdom shared by his mother on the day he left home to train as a Jedi Knight. That failure led him to becoming the fearsome (...) villain we all know as Darth Vader. We're living in a time of unprecedented and rapid change. An age of chaos. Democracies are in decline worldwide. Dictators are ascendant. Civic organizations are crumbling. People feel lonelier and more rudderless than in any other time in recent history. We've tried to slow down, and in some cases we, like Anakin, have tried stop the change, but failed at every turn. The fears that come with living in an age of disruption have produced public anger, and that anger has swelled movements of hate. Author Stephen Kent believes part of the solution is hiding in plain sight. A story that binds together multiple generations with a common language, a moral framework, and a sense of wonder. It's Star Wars. What if we looked to Star Wars for more than just entertainment? How the Force Can Fix the World takes this challenge on by analyzing the core principles of the Star Wars franchise: HOPE, CHOICE, HUMILITY, EMPATHY, REDEMPTION, BALANCE and rejecting FEAR. Together, these are the Star Wars roadmap for living better lives, and maybe even fostering a better politics. The path that we're on -- where fear leads to anger, and anger to hatred -- will only end in suffering. But Star Wars shows us the way back from the brink. Shared stories of virtue that are beloved across cultures and political divides are hard to come by, but Star Wars is one such story. Turn on the news; things are pretty broken right now -- but the Force can fix the world. (shrink)

There remains no consensus among social scientists as to how to measure and understand forms of information deprivation such as misinformation. Machine learning and statistical analyses of information deprivation typically contain problematic operationalizations which are too often biased towards epistemic elites' conceptions that can undermine their empirical adequacy. A mature science of information deprivation should include considerable citizen involvement that is sensitive to the value-ladenness of information quality and that doing so may improve the predictive and explanatory power of extant (...) models. (shrink)

Recent epistemology has reflected a growing interest in issues about the value of knowledge and the values informing epistemic appraisal. Is knowledge more valuable that merely true belief or even justified true belief? Is truth the central value informing epistemic appraisal or do other values enter the picture? Epistemic Value is a collection of previously unpublished articles on such issues by leading philosophers in the field. It will stimulate discussion of the nature of knowledge and of directions that might be (...) taken by the theory of knowledge. The contributors are Jason Baehr, Michael Brady, Berit Brogaard, Michael DePaul, Pascal Engel, Catherine Elgin, Alvin Goldman, John Greco, Stephen Grimm, Ward Jones, Martin Kusch, Jonathan Kvanvig, Michael Lynch, Erik Olsson, Wayne Riggs and Matthew Weiner. (shrink)

Where does normal brain or psychological function end, and pathology begin? The line can be hard to discern, making disease sometimes a tricky word. In addiction, normal ‘wanting’ processes become distorted and excessive, according to the incentive-sensitization theory. Excessive ‘wanting’ results from drug-induced neural sensitization changes in underlying brain mesolimbic systems of incentive. ‘Brain disease’ was never used by the theory, but neural sensitization changes are arguably extreme enough and problematic enough to be called pathological. This implies that ‘brain disease’ (...) can be a legitimate description of addiction, though caveats are needed to acknowledge roles for choice and active agency by the addict. Finally, arguments over ‘brain disease’ should be put behind us. Our real challenge is to understand addiction and devise better ways to help. Arguments over descriptive words only distract from that challenge. (shrink)