We point out some concepts that appear rather frequently in physics discussions, which, despite a seemingly innocent initial appearance, turn out to have important implicit implications that put into question the very assumption of their meaningfulness. The message of this essay is that, in order to avoid the ensuing confusions, their usage should be accompanied with clarifications that make them meaningful, and then to confront the often uncomfortable underlying assumptions required to do so. In particular, we will visit the notions (...) of novel physics occurring at a certain energy scale, or at certain distance from a black hole’s event horizon, and the various meanings of the word “fluctuations”. (shrink)

Relational Quantum Mechanics is an interpretation of quantum theory based on the idea of abolishing the notion of absolute states of systems, in favor of states of systems relative to other systems. Such a move is claimed to solve the conceptual problems of standard quantum mechanics. Moreover, RQM has been argued to account for all quantum correlations without invoking non-local effects and, in spite of embracing a fully relational stance, to successfully explain how different observers exchange information. In this work, (...) we carry out a thorough assessment of RQM and its purported achievements. We find that it fails to address the conceptual problems of standard quantum mechanics—related to the lack of clarity in its ontology and the rules that govern its behavior—and that it leads to serious conceptual problems of its own. We also uncover as unwarranted the claims that RQM can correctly explain information exchange among observers, and that it accommodates all quantum correlations without invoking non-local influences. We conclude that RQM is unsuccessful in its attempt to provide a satisfactory understanding of the quantum world. (shrink)

A recent debate has ensued over the claim in Pikovski et al. that systems with internal degrees of freedom undergo a universal, gravity-induced, type of decoherence that explains their quantum-to-classical transition. Such decoherence is supposed to arise from the different gravitational redshifts experienced by such systems when placed in a superposition of two wave packets at different heights in a gravitational field. Here we investigate some aspects of the discussion with the aid of simple examples. In particular, we first resolve (...) an apparent conflict between the reported results and the equivalence principle by noting that the static and free fall descriptions focus on states associated with different hypersurfaces. Next, we emphasize that predictions regarding the observability of interference become relevant only in the context of concrete experimental settings. As a result, we caution against hasty claims of universal validity. Finally, we dispute the claim that, at least in the scenarios discussed in Pikovski et al., gravitation is responsible for the reported results and we question the alleged ability of decoherence to explain the quantum-to-classical transition. In consequence, we argue against the extraordinary assertion in Pikovski et al. that gravity can account for the emergence of classicality. (shrink)

Any acceptable quantum gravity theory must allow us to recover the classical spacetime in the appropriate limit. Moreover, the spacetime geometrical notions should be intrinsically tied to the behavior of the matter that probes them. We consider some difficulties that would be confronted in attempting such an enterprise. The problems we uncover seem to go beyond the technical level to the point of questioning the overall feasibility of the project. The main issue is related to the fact that, in the (...) quantum theory, it is impossible to assign a trajectory to a physical object, and, on the other hand, according to the basic tenets of the geometrization of gravity, it is precisely the trajectories of free localized objects that define the spacetime geometry. The insights gained in this analysis should be relevant to those interested in the quest for a quantum theory of gravity and might help refocus some of its goals. (shrink)

In Crull it is argued that, in order to confront outstanding problems in cosmology and quantum gravity, interpretational aspects of quantum theory can by bypassed because decoherence is able to resolve them. As a result, Crull concludes that our focus on conceptual and interpretational issues, while dealing with such matters in Okon and Sudarsky, is avoidable and even pernicious. Here we will defend our position by showing in detail why decoherence does not help in the resolution of foundational questions (...) in quantum mechanics, such as the measurement problem or the emergence of classicality. (shrink)

There is a persistent state of confusion regarding the nature of the Unruh effect. We will argue that, in contrast to some interpretations thereof, the effect does not represent any novel physics and that, by its very nature, the effect is fundamentally unmeasurable in all experiments of the kind that have been contemplated until now. Also, we discuss what aspects connected with this effect one might consider as possibilities to be explored empirically and what their precise meaning may be regarding (...) the issue at hand. (shrink)

The Consistent Histories (CH) formalism aims at a quantum mechanical framework which could be applied even to the universe as a whole. CH stresses the importance of histories for quantum mechanics, as opposed to measurements, and maintains that a satisfactory formulation of quantum mechanics allows one to assign probabilities to alternative histories of a quantum system. It further proposes that each realm, that is, each set of histories to which probabilities can be assigned, provides a valid quantum-mechanical account, but that (...) different realms can be mutually incompatible. Finally, some of its proponents offer an “evolutionary” explanation of our existence in the universe and of our preference for quasiclassical descriptions of nature. The present work questions the validity of claims offered by CH proponents asserting that it solves many interpretational problems in quantum mechanics. In particular, we point out that the interpretation of the framework leaves vague two crucial points, namely, whether realms are fixed or chosen and the link between measurements and histories. Our claim is that by doing so, CH overlooks the main interpretational problems of quantum mechanics. Furthermore, we challenge the evolutionary explanation offered and we critically examine the proposed notion of a realm-dependent reality. (shrink)

In response to a recent rebuttal of Okon and Sudarsky presented in Griffiths, we defend the claim that the Consistent Histories formulation of quantum mechanics does not solve the measurement problem. In order to do so, we argue that satisfactory solutions to the problem must not only not contain anthropomorphic terms at the fundamental level, but also that applications of the formalism to concrete situations should not require any input not contained in the description of the situation at hand (...) at the fundamental level. Our assertion is that the Consistent Histories formalism does not meet the second criterion. We also argue that the so-called second measurement problem, i.e., the inability to explain how an experimental result is related to a property possessed by the measured system before the measurement took place, is only a pseudo-problem. As a result, we reject the claim, defended in Griffiths, that the capacity of the Consistent Histories formalism to solve it should count as an advantage over other interpretations. (shrink)

We critically evaluate the treatment of the notion of measurement in the Consistent Histories approach to quantum mechanics. We find such a treatment unsatisfactory because it relies, often implicitly, on elements external to those provided by the formalism. In particular, we note that, in order for the formalism to be informative when dealing with measurement scenarios, one needs to assume that the appropriate choice of framework is such that apparatuses are always in states of well defined pointer positions after measurements. (...) The problem is that there is nothing in the formalism to justify this assumption. We conclude that the Consistent Histories approach, contrary to what is claimed by its proponents, fails to provide a truly satisfactory resolution for the measurement problem in quantum theory. (shrink)

The black hole information paradox arises from an apparent conflict between the Hawking black hole radiation and the fact that time evolution in quantum mechanics is unitary. The trouble is that while the former suggests that information of a system falling into a black hole disappears, the latter implies that information must be conserved. In this work we discuss the current divergence in views regarding the paradox, we evaluate the role that objective collapse theories could play in its resolution and (...) we propose a link between spontaneous collapse events and microscopic virtual black holes. (shrink)

The information loss paradox is often presented as an unavoidable consequence of well-established physics. However, in order for a genuine paradox to ensue, not-trivial assumptions about, e.g., quantum effects on spacetime, are necessary. In this work we will be explicit about these additional, speculative assumptions required. We will also sketch a map of the available routes to tackle the issue, highlighting the, often overlooked, commitments demanded of each alternative. Finally, we will display the strong link between black holes, the issue (...) of information loss and the measurement problem. (shrink)

We put forward a proposal that combines objective collapse models, developed in connection with quantum-foundational questions, with the so-called Weyl curvature hypothesis, introduced by Roger Penrose as an attempt to account for the very special initial state of the universe. In particular, we explain how a curvature dependence of the collapse rate in such models, an idea already shown to help in the context of black holes and information loss, could also offer a dynamical justification for Penrose's conjecture.

Over the years, the so-called black hole information loss paradox has generated an amazingly diverse set of proposals. However, 40 years after the introduction of Hawking’s radiation, there continues to be a debate regarding whether the effect does, in fact, lead to an actual problem. In this paper we try to clarify some aspect of the discussion by describing two possible perspectives regarding the landscape of the information loss issue. Moreover, we advance a fairly conservative point of view regarding the (...) relation between evaporating black holes and the rest of physics, which leads us to advocate a generalized breakdown of unitarity. We conclude by exploring some implications of our proposal in relation with conservation laws. (shrink)

Inspired by possible connections between gravity and foundational question in quantum theory, we consider an approach for the adaptation of objective collapse models to a general relativistic context. We apply these ideas to a list of open problems in cosmology and quantum gravity, such as the emergence of seeds of cosmic structure, the black hole information issue, the problem of time in quantum gravity and, in a more speculative manner, to the nature of dark energy and the origin of the (...) very special initial state of the universe. We conclude that objective collapse models offer a rather promising path to deal with all of these issues. (shrink)

Relying on some auxiliary assumptions, usually considered mild, Bell’s theorem proves that no local theory can reproduce all the predictions of quantum mechanics. In this work, we introduce a fully local, superdeterministic model that by explicitly violating ‘settings independence’—one of these auxiliary assumptions, requiring statistical independence between measurement settings and systems to be measured—is able to reproduce all the predictions of quantum mechanics. Moreover, we show that contrary to widespread expectations, our model can break settings independence without an initial state (...) that is too complex to handle, without visibly losing all explanatory power, and without outright nullifying all of experimental science. Still, we argue that our model is unnecessarily complicated and does not offer true advantages over its non-local competitors. We conclude that while our model does not appear to be a viable contender to its non-local counterparts, it provides the ideal framework to advance the debate over violations of statistical independence via the superdeterministic route. (shrink)

The difficult issues related to the interpretation of quantum mechanics and, in particular, the “measurement problem” are revisited using as motivation the process of generation of structure from quantum fluctuations in inflationary cosmology. The unessential mathematical complexity of the particular problem is bypassed, facilitating the discussion of the conceptual issues, by considering, within the paradigm set up by the cosmological problem, another problem where symmetry serves as a focal point: a simplified version of Mott’s problem.

It is common to hear talk of the aim of belief and to find philosophers appealing to that aim for numerous explanatory purposes. What belief 's aim explains depends, of course, on what that aim is. Many hold that it is somehow related to truth, but there are various ways in which one might specify belief 's aim using the notion of truth. In this article, by considering whether they can account for belief 's standard of correctness and the epistemic (...) norms governing belief, I argue against certain prominent specifications of belief 's aim given in terms of truth, and advance a neglected alternative. (shrink)

The _Physics_ is a foundational work of western philosophy, and the crucial one for understanding Aristotle's views on matter, form, essence, causation, movement, space, and time. This richly annotated, scrupulously accurate, and consistent translation makes it available to a contemporary English reader as no other does—in part because it fits together seamlessly with other closely associated works in the New Hackett Aristotle series, such as the _Metaphysics_, _De Anima_, and forthcoming _De Caelo_ and _On Coming to Be and Passing Away_. (...) Eventually the series will include all of Aristotle's works. Sequentially numbered endnotes provide the information most needed at each juncture, while a detailed Index of Terms indicates places where focused discussion of key notions occurs. An illuminating general Introduction describes the book that lies ahead, explaining what sort of work it is and what sorts of evidence it relies on. (shrink)

Infallibilism is the view that a belief cannot be at once warranted and false. In this essay we assess three nonpartisan arguments for infallibilism, arguments that do not depend on a prior commitment to some substantive theory of warrant. Three premises, one from each argument, are most significant: if a belief can be at once warranted and false, then the Gettier Problem cannot be solved; if a belief can be at once warranted and false, then its warrant can be transferred (...) to an accidentally true belief; if a belief can be at once warranted and false, then it can be warranted and accidentally true. We argue that each of these is either false or no more plausible than its denial. Along the way, we offer a solution to the Gettier Problem that is compatible with fallibilism. (shrink)

1. Happiness, then and now -- Happiness, eudaimonia, and practical reasoning -- Happiness as eudaimonia -- Happiness and virtuous activity -- New directions from old debates -- 2. Happiness then: the sufficiency debate -- Aristotle's case against the sufficiency thesis -- 3. Happiness now: rethinking the self -- Socrates' case for the sufficiency thesis -- Epictetus and the stoic self -- The Stoics' case for the sufficiency thesis -- The embodied conception of the self -- The embodied conception and psychological (...) well-being -- The Stoics' case against the embodied conception. (shrink)

The social sciences playa variety of multifaceted roles in the policymaking process. So varied are these roles, indeed, that it is futile to talk in the singular about the use of social science in policymaking, as if there were one constant relationship between two fixed and stable entities. Instead, to address this issue sensibly one must talk in the plural about uses of dif ferent modes of social scientific inquiry for different kinds of policies under various circumstances. In some cases, (...) the influence of social scientific research is direct and tangible, and the connection between the find ings and the policy is easy to see. In other cases, perhaps most, its influence is indirect-one small piece in a larger mosaic of politics, bargaining, and compromise. Occasionally the findings of social scientific studies are explicitly drawn upon by policymakers in the formation, implementation, or evaluation of particular policies. More often, the categories and theoretical models of social science provide a general background orientation within which policymakers concep tualize problems and frame policy options. At times, the in fluence of social scientific work is cognitive and informational in nature; in other instances, policymakers use social science primarily for symbolic and political purposes in order to le gitimate preestablished goals and strategies. Nonetheless, amid this diversity and variety, troubling general questions persistently arise. (shrink)

Sometimes it takes years of debate for philosophers to discover what it is they really disagree about. Sometimes they talk past each other in long series of books and articles, never guessing at the root disagreement that divides them. But occasionally a day comes when something happens to coax the cat out of the bag. "Aha!" one philosopher exclaims to another, "so that's why you've been disagreeing with me, misunderstanding me, resisting my conclusions, puzzling me all these years!".

Realists about possible worlds typically identify possible worlds with abstract objects, such as propositions or properties. However, they face a significant objection due to Lewis (1986), to the effect that there is no way to explain how possible worlds-as-abstract objects represent possibilities. In this paper, I describe a response to this objection on behalf of realists. The response is to identify possible worlds with propositions, but to deny that propositions are abstract objects, or indeed objects at all. Instead, I argue (...) that realists should follow Prior (1971) and others in treating higher-order quantification (e.g. quantification into predicate or sentence position) as a genuine form of quantification in its own right, and so in particular, not to be analysed in terms of first-order quantification over abstract objects. I argue that from this ‘higher-orderist’ perspective, there is a relatively straightforward answer to the question of how possible worlds-as-propositions succeed in representing possibilities. (shrink)

The central question in contemporary ethics is whether virtue can replace duty as the primary notion in ethical theory. The subject of intense contemporary debate in ethical theory, virtue ethics is currently enjoying an increase in interest. This is the first book to focus directly on the subject. It provides a clear, systematic introduction to the area and houses under one cover a collection of the central articles published on the debate over the past decade. The essays encompass a wide (...) range ofaspects: the difference between virtue ethics and traditional duty ethics; present arguments for and against virtue ethics; the practical implications of virtue ethics and the Aristotelian and Kantian attitudes to virtue ethics. (shrink)

Realists about possible worlds typically identify possible worlds with abstract objects, such as propositions or properties. However, they face a significant objection due to Lewis (1986), to the effect that there is no way to explain how possible worlds-as-abstract objects represent possibilities. In this paper, I describe a response to this objection on behalf of realists. The response is to identify possible worlds with propositions, but to deny that propositions are abstract objects, or indeed objects at all. Instead, I argue (...) that realists should follow Prior (1971) and others in treating higher-order quantification (e.g. quantification into predicate or sentence position) as a genuine form of quantification in its own right, and so in particular, not to be analysed in terms of first-order quantification over abstract objects. I argue that from this ‘higher-orderist’ perspective, there is a relatively straightforward answer to the question of how possible worlds-as-propositions succeed in representing possibilities. (shrink)

Western philosophers have made significant contributions to the establishment of government around the world. Philosophers like Plato, Locke, Hobbes, and Machiavelli dramatically influenced the government system not just in foreign countries but also in the Philippines. Hence, this seminar paper explored the political notions of four Western philosophers and positioned them in Duterte’s six years of presidency. In pursuit of this study, the researcher employed a systematic literature review. A systematic review process is used to collect articles, and then a (...) qualitative approach is used to assess them. The researcher came up with four major themes in this study particularly (1) Duterte is a Dictator, not a Philosopher-King, (2) Violators of natural rights, (3) the Sea-monster of Davao, and lastly (4) Love, fear, cruelty, and Duterte. Thus, the researcher concurred that all of the philosophical ideas of the four Western philosophers did not fit or even violated during Duterte’s six years of presidency in the Philippines. (shrink)

This paper will attempt to assess the primary differences between what I take to be the two primary philosophical "traditions" in contemporary French philosophy, using Derrida (transcendence) and Deleuze (immanence) as exemplary representatives. The body of the paper will examine the use of these terms in three different areas of philosophy on which Derrida and Deleuze have both written: subjectivity, ontology, and epistemology. (1) In the field of subjectivity, the notion of the subject has been critiqued in two manners, either (...) by appealing either to the transcendence of the other (Levinas, Derrida) or to the immanent jlux of experience itself, in relation to which the Ego itself is trancendent (Deleuze, Foucault, Sartre, James). (2) In the field of ontology, a purely "immanent" ontology would be an ontology in which there is neither a "beyond" or an "otherwise" Being, nor "interruptions" in Being, both of which would require an appeal to a formal element of transcendence (Deleuze). Such a "transcendent" and aporetic structure, which can never appear or be present as such within Being, is what lies at the basis of the project of deconstruction, with its attendant aporias (Derrida). (3) This distinction, finally, finds parallels in Kant's epistemology, for whom the possible experience is conditioned by purely immanent criteria (Deleuze), whereas what goes beyond the limits of possible experience is transcendent (Derrida). Drawing on these three thread of analysis, the paper concludes with an assessment of what is at stake in the ethical differences between the two traditions. The question of "transcendence" is "What mast I do?", which is the question of morality (a duty or obligation that is beyond being, an "ought" beyond the "is"). The question of "immanence" is "What can I do?" (my power or capacity as an existing individual within being). For Levinas and Derrida, ethics precedes ontology because it is derived from an element of transcendence (the Other); for Deleuze, ethics is ontology because it is derived from the immanent relation of beings to Being at the level of their existence (Spinoza). (shrink)

In this groundbreaking book, Daniel D. Novotny explores one of the most controversial topics of Suarez's philosophy: "beings of reason." Beings of reason are impossible intentional objects, such as blindness and square-circle.

The problem known as Buridan’s Ass says that a hungry donkey equipoised between two identical bales of hay will starve to death. Indecision kills the ass. Some philosophers worry about human analogs. Computer scientists since the 1960s have known about the computer versions of such cases. From what Leslie Lamport calls ‘Buridan’s Principle’—a discrete decision based on a continuous range of input-values cannot be made in a bounded time—it follows that the possibilities for human analogs of Buridan’s Ass are far (...) more wide-ranging and securely provable than has been acknowledged in philosophy. We are never necessarily decisive. This is mathematically provable. I explore four consequences: first, increased interest of the literature’s solutions to Buridan’s Ass; second, a new asymmetry between responsibility for omissions and responsibility for actions; third, clarification of the standard account of akrasia; and, fourth, clarification of the role of credences in normative decision-theory. (shrink)

The Jewish Philosophy Reader is the first comprehensive anthology of classic writings on Jewish philosophy from the Bible to postmodernism. The Reader is clearly divided into four separate parts: Foundations and First Principles, Medieval and Renaissance Jewish Philosophy, Modern Jewish Thought, and Contemporary Jewish Philosophy. Each part is clearly introduced by the editors. The readings featured are representative writings of each era listed above and are from the following major thinkers: Abrabanel, Baeck, Bergman, Borowitz, Buber, Cohen, Crescas, Fackenheim, Geiger, Gersonides, (...) Goodman, Graetz, Halevi, Hartman, Heschel, Hess, Hirsch, Ibn Ezra, Ibn Gabirol, Ibn Paquda, Kellner, Kook, Krochmal, Leibowitz, Levinas, Maimonides, Maybaum, Mendelssohn, Novak, Philo, Plaskow, Rosenzweig, Saadia, Scholem, Seeskin, Soloveitchik, Spinoza, Strauss, Wolf, Zunz. (shrink)

Deleuze’s philosophy of immanence, because it vigorously rejects every appeal to the beyond, is often presumed to be indifferent to the concerns of religion. This book argues against such a presumption. It does so, first of all, by emphasising how both Deleuze’s thought and the notion of religion are motivated by a demand to create new modes of existence, or to imagine and enact a future that would substantively break with the present configuration of being. If Deleuze’s thought and the (...) notion of religion intersect in this regard, then their divergence must be located elsewhere, namely in the distinction between immanence and transcendence. The book thus argues that the enemy of Deleuze’s thought is not religion in general but instead the specific operation of transcendence. Furthermore, it argues that since Deleuze’s thought is not simply anti-religious, it cannot be identified with secularism. Along these lines, the book shows how Deleuzian immanence is able both to oppose religious transcendence and to enter an allliance with immanent accounts of the name of God. The effect of this is to suspend the paralysing debate between religion and the secular in order to attend to the ways in which immanence – whether “religious” or “secular” – is able to break with the present and to create the future. (shrink)

Both new and seasoned psychotherapists wrestle with the relationship between psychological distress and inequality across race, class, gender, and sexuality. How does one address this organically in psychotherapy? What role does it play in therapeutic action? Who brings it up, the therapist or the patient? Daniel José Gaztambide addresses these questions by offering a rigorous decolonial approach that rethinks theory and technique from the ground up, providing an accessible, evidence-informed reintroduction to psychoanalytic practice. He re-examines foundational thinkers from three (...) traditions—Freudian, relational-interpersonal, and Lacanian—through the lens of revolutionary psychiatrist Frantz Fanon, and offers a detailed analysis of Fanon’s psychoanalytic practice. Drawing on rich yet grounded discussions of theory and research, Gaztambide presents a clinical model that facilitates exploration of the social in the clinical space in a manner intimately related to the patient’s presenting problem. In doing so, this book demonstrates that clinicians no longer have to choose between attending to the personal, interpersonal, or sociopolitical. It is a guide to therapeutic action “on the couch,” which envisions political action “off the couch” and in the streets. Decolonizing Psychoanalytic Technique provides a comprehensive, practice-oriented and compelling guide for students, practitioners, and scholars of critical, multicultural and decolonial approaches to psychotherapy. (shrink)

This exceptional anthology immerses students in such powerful ideas that they will find themselves not just reading about, but actually participating in, the kind of philosophical thinking that can change the way they look at their lives and the world around them. Now in a new edition, The Experience of Philosophy features eighty-five readings that challenge students' thinking about God, freedom, reality, nothingness, death, and their own identities. Provocative and accessible, these selections have been carefully chosen for their ability to (...) draw students out of an ordinary frame of reference into exciting new territory. Although the editors include many classic sources from philosophers such as Plato, Descartes, Locke, and Kant, the emphasis is on contemporary writings. Articles by Derek Parfit, Bertrand Russell, and others help students see philosophy's links to literature, the natural sciences, and the physical and social sciences. The sixth edition features twelve new essays--by Augustine, Alvin Plantinga and Daniel Kolak, Georges Rey, Fred Dretske, David Reisman, Paul Teller, Clea F. Rees, Padmasiri de Silva, Daniel Kolak, Karl Marx, Anand Chandavarkar, and Vincent Hendricks--as well as more text boxes offering excerpts from other relevant works. The Experience of Philosophy, Sixth Edition, integrates helpful pedagogical aids including section introductions, a brief introduction to each selection, biographical information on each author, and questions before and after each reading to reinforce main ideas and promote thinking. Further readings after each selection direct students to additional material on related issues. Ideal for introductory philosophy courses, The Experience of Philosophy, Sixth Edition, encourages students to "do" philosophy, rather than just read about its history. (shrink)

We are bombarded with more information each day than our brains can process especially in election season. It's raining bad data, half-truths, and even outright lies. Daniel J. Levitin shows how to recognize misleading announcements, statistics, graphs, and written reports revealing the ways lying weasels can use them.

Much has been written about medicine and the market in recent years. This book is the first to include an assessment of market influence in both developed and developing countries, and among the very few that have tried to evaluate the actual health and economic impact of market theory and practices in a wide range of national settings. Tracing the path that market practices have taken from Adam Smith in the eighteenth century into twenty-first-century health care, Daniel Callahan and (...) Angela A. Wasunna add a fresh dimension: they compare the different approaches taken in the market debate by health care economists, conservative market advocates, and liberal supporters of single-payer or government-regulated systems. In addition to laying out the market-versus-government struggle around the world -- from Canada and the United States to Western Europe, Latin America, and many African and Asian countries -- they assess the leading market practices, such as competition, physician incentives, and co-payments, for their economic and health efficacy to determine whether they work as advertised. This timely and necessary book engages new dimensions of a development that has urgent consequences for the delivery of health care worldwide. (shrink)