ABSTRACT Ruetsche claims that an abstract C*-algebra of observables will not contain all of the physically significant observables for a quantum system with infinitely many degrees of freedom. This would signal that in addition to the abstract algebra, one must use Hilbert space representations for some purposes. I argue to the contrary that there is a way to recover all of the physically significant observables by purely algebraic methods. 1Introduction 2Preliminaries 3Three Extremist Interpretations 3.1Algebraic imperialism 3.2Hilbert space conservatism 3.3Universalism 4Parochial (...) Observables 4.1Parochial observables for the imperialist 4.2Parochial observables for the universalist 5Conclusion. (shrink)

It is well known that the process of quantization—constructing a quantum theory out of a classical theory—is not in general a uniquely determined procedure. There are many inequivalent methods that lead to different choices for what to use as our quantum theory. In this paper, I show that by requiring a condition of continuity between classical and quantum physics, we constrain and inform the quantum theories that we end up with.

In this article, I examine the relationship between physical quantities and physical states in quantum theories. I argue against the claim made by Arageorgis that the approach to interpreting quantum theories known as Algebraic Imperialism allows for “too many states.” I prove a result establishing that the Algebraic Imperialist has very general resources that she can employ to change her abstract algebra of quantities in order to rule out unphysical states.

Ruetsche claims that an abstract C*-algebra of observables will not contain all of the physically significant observables for a quantum system with infinitely many degrees of freedom. This would signal that in addition to the abstract algebra, one must use Hilbert space representations for some purposes. I argue to the contrary that there is a way to recover all of the physically significant observables by purely algebraic methods. 1 Introduction2 Preliminaries3 Three Extremist Interpretations3.1 Algebraic imperialism3.2 Hilbert space conservatism3.3 Universalism4 Parochial (...) Observables4.1 Parochial observables for the imperialist4.2 Parochial observables for the universalist5 Conclusion. (shrink)

One implication of Bell’s theorem is that there cannot in general be hidden variable models for quantum mechanics that both are noncontextual and retain the structure of a classical probability space. Thus, some hidden variable programs aim to retain noncontextuality at the cost of using a generalization of the Kolmogorov probability axioms. We generalize a theorem of Feintzeig to show that such programs are committed to the existence of a finite null cover for some quantum mechanical experiments, i.e., a (...) finite collection of probability zero events whose disjunction exhausts the space of experimental possibilities. (shrink)

Ruetsche argues that a problem of unitarily inequivalent representations arises in quantum theories with infinitely many degrees of freedom. I provide an algebraic formulation of classical field theories and show that unitarily inequivalent representations arise there as well. I argue that the classical case helps us rule out one possible response to the problem of unitarily inequivalent representations called Hilbert Space Conservatism.

Classical accounts of intertheoretic reduction involve two pieces: first, the new terms of the higher-level theory must be definable from the terms of the lower-level theory, and second, the claims of the higher-level theory must be deducible from the lower-level theory along with these definitions. The status of each of these pieces becomes controversial when the alleged reduction involves an infinite limit, as in statistical mechanics. Can one define features of or deduce the behavior of an infinite idealized system from (...) a theory describing only finite systems? In this paper, I change the subject in order to consider the motivations behind the definability and deducibility requirements. The classical accounts of intertheoretic reduction are appealing because when the definability and deducibility requirements are satisfied there is a sense in which the reduced theory is forced upon us by the reducing theory and the reduced theory contains no more information or structure than the reducing theory. I will show that, likewise, there is a precise sense in which in statistical mechanics the properties of infinite limiting systems are forced upon us by the properties of finite systems, and the properties of infinite systems contain no information beyond the properties of finite systems. (shrink)

I argue that it is possible to give an interpretation of the classical ℏ→0 limit of quantum mechanics that results in a partial explanation of the success of classical mechanics. The interpretation...

Classical accounts of intertheoretic reduction involve two pieces: first, the new terms of the higher-level theory must be definable from the terms of the lower-level theory, and second, the claims of the higher-level theory must be deducible from the lower-level theory along with these definitions. The status of each of these pieces becomes controversial when the alleged reduction involves an infinite limit, as in statistical mechanics. Can one define features of or deduce the behavior of an infinite idealized system from (...) a theory describing only finite systems? In this paper, I change the subject in order to consider the motivations behind the definability and deducibility requirements. The classical accounts of intertheoretic reduction are appealing because when the definability and deducibility requirements are satisfied there is a sense in which the reduced theory is forced upon us by the reducing theory and the reduced theory contains no more information or structure than the reducing theory. I will show that, likewise, there is a precise sense in which in statistical mechanics the properties of infinite limiting systems are forced upon us by the properties of finite systems, and the properties of infinite systems contain no information beyond the properties of finite systems. (shrink)

This article takes up a suggestion that the reason we cannot find certain hidden variable theories for quantum mechanics, as in Bell’s theorem, is that we require them to assign joint probability distributions on incompatible observables. These joint distributions are problematic because they are empirically meaningless on one standard interpretation of quantum mechanics. Some have proposed getting around this problem by using generalized probability spaces. I present a theorem to show a sense in which generalized probability spaces can’t serve as (...) hidden variable theories for quantum mechanics, so the proposal for getting around Bell’s theorem fails. 1 Introduction2 Bell’s Theorem and Classical Probability Spaces2.1 Bell’s derivation of the Bell inequalities2.2 Pitowsky’s derivation of the Bell inequalities3 Incompatible Observables4 Generalized Probability Spaces5 A ‘No-Go’ Theorem6 Conclusions. (shrink)

I argue that philosophical issues concerning reductive explanations help constrain the construction of quantum theories with appropriate state spaces. I illustrate this general proposal with two examples of restricting attention to physical states in quantum theories: regular states and symmetry-invariant states. 1Introduction2Background2.1 Physical states2.2 Reductive explanations3The Proposed ‘Correspondence Principle’4Example: Regularity5Example: Symmetry-Invariance6Conclusion: Heuristics and Discovery.

This paper considers states on the Weyl algebra of the canonical commutation relations over the phase space R^{2n}. We show that a state is regular iff its classical limit is a countably additive Borel probability measure on R^{2n}. It follows that one can "reduce" the state space of the Weyl algebra by altering the collection of quantum mechanical observables so that all states are ones whose classical limit is physical.

We argue against claims that the classical ℏ → 0 limit is “singular” in a way that frustrates an eliminative reduction of classical to quantum physics. We show one precise sense in which quantum mechanics and scaling behavior can be used to recover classical mechanics exactly, without making prior reference to the classical theory. To do so, we use the tools of strict deformation quantization, which provides a rigorous way to capture the ℏ → 0 limit. We then use the (...) tools of category theory to demonstrate one way that this reduction is explanatory: it illustrates a sense in which the structure of quantum mechanics determines that of classical mechanics. (shrink)

Prop. 1 on p. 10 is false as stated. The proof implicitly assumes that all Cauchy sequences.

This paper attempts to make sense of a notion of ``approximation on certain scales'' in physical theories. I use this notion to understand the classical limit of ordinary quantum mechanics as a kind of scaling limit, showing that the mathematical tools of strict quantization allow one to make the notion of approximation precise. I then compare this example with the scaling limits involved in renormalization procedures for effective field theories. I argue that one does not yet have the mathematical tools (...) to make a notion of ``approximation on certain scales" precise in extant mathematical formulations of effective field theories. This provides guidance on the kind of further work that is needed for an adequate interpretation of quantum field theory. (shrink)

Bundles of C*-algebras can be used to represent limits of physical theories whose algebraic structure depends on the value of a parameter. The primary example is the ℏ→0 limit of the C*-algebras of physical quantities in quantum theories, represented in the framework of strict deformation quantization. In this paper, we understand such limiting procedures in terms of the extension of a bundle of C*-algebras to some limiting value of a parameter. We prove existence and uniqueness results for such extensions. Moreover, (...) we show that such extensions are functorial for the C*-product, dynamical automorphisms, and the Lie bracket (in the ℏ→0 case) on the fiber C*-algebras. (shrink)

A number of arguments purport to show that quantum field theory cannot be given an interpretation in terms of localizable particles. We show, in light of such arguments, that the classical ħ→0\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbar \rightarrow 0$$\end{document} limit can aid our understanding of the particle content of quantum field theories. In particular, we demonstrate that for the massive Klein–Gordon field, the classical limits of number operators can be understood to encode local information about particles (...) in the corresponding classical field theory. (shrink)

This paper has two aims. The first is to present and defend a new argument for rights contributionism – the view that the notion of a moral claim-right is a contributory (or pro tanto) rather than overall normative notion. The argument is an inference to the best explanation: it is argued that (i) there are contributory moral factors that contrast with standard moral reasons by way of having a number of formal properties that are characteristic of rights, even though they (...) can be overridden, and (ii) that this is best explained by a view that takes these factors to correlate with rights. The second aim is to show that the truth of rights contributionism matters for normative ethics. More specifically, it is argued that rights contributionism clears the way for deontologists to justify the pre-theoretically plausible verdict that we have a duty to save the greater number in so-called Taurek scenarios – scenarios in which we have to choose between saving either a greater or a smaller number of different people. The chapter offers a novel and distinctively deontological explanation of this verdict that is based on the assumption that everyone has a pro tanto right to be saved in a Taurek scenario. (shrink)

Sells encourages a radical departure from the usual introspection and self-centeredness of psychology in our time. By placing style first, Sells argues that we must turn our eyes and minds outward to the greater world. Emphasizing beauty over emotion and appreciation over feeling, he attempts to break the stranglehold of the self so as to reconstitute our proper place among the many things of the world.

This collection explores, in Adorno's description, `philosophy directed against philosophy'. The essays cover all aspects of Benjamin's writings, from his early work in the philosophy of art and language, through to the concept of history. The experience of time and the destruction of false continuity are identified as the key themes in Benjamin's understanding of history.

Given that as much as half of human thought arises in a stimulus independent fashion, it would seem unlikely that such thoughts would play no functional role in our lives. However, evidence linking the mind-wandering state to performance decrement has led to the notion that mind-wandering primarily represents a form of cognitive failure. Based on previous work showing a prospective bias to mind-wandering, the current study explores the hypothesis that one potential function of spontaneous thought is to plan and anticipate (...) personally relevant future goals, a process referred to as autobiographical planning. The results confirm that the content of mind-wandering is predominantly future-focused, demonstrate that individuals with high working memory capacity are more likely to engage in prospective mind-wandering, and show that prospective mind-wandering frequently involves autobiographical planning. Together this evidence suggests that mind-wandering can enable prospective cognitive operations that are likely to be useful to the individual as they navigate through their daily lives. (shrink)

v. 1. Charmides. Lysis. Laches. Protagoras. Euthydemus. Cratylus. Phaedrus. Ion. Symposium.--v. 2. Meno. Euthyphro. Apology. Crito. Phaedo. Georgias. Appendix I: Lesser Hippias. Alcibiades I. Menexenus. Appenddix II: Alcibiades II. Eryxias.--v. 3. Republic. Timaeus. Critias.--v. 4. Pharmenides. Theaetetus. Sophist. Statesman. Philebus.--v. 5 Laws. Index to the writings of Plato.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps, and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may (...) freely copy and distribute this work, as no entity has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

The current research investigates the interaction between thought suppression and individuals’ explicit awareness of their thoughts. Participants in three experiments attempted to suppress thoughts of a prior romantic relationship and their success at doing so was measured using a combination of self-catching and experience-sampling. In addition to thoughts that individuals spontaneously noticed, individuals were frequently caught engaging in thoughts of their previous partner at experience-sampling probes. Furthermore, probe-caught thoughts were: associated with stronger decoupling of attention from the environment, more likely (...) to occur under cognitive load, more frequent for individuals with a desire to reconcile, and associated with individual differences in the tendency to suppress thoughts. Together, these data suggest that individuals can lack meta-awareness that they have begun to think about a topic they are attempting to suppress, providing novel insight into the cognitive processes that are involved in attempting to control undesired mental states. (shrink)

The first English translation of the major political works of Benjamin Constant (1767-1830), one of the most important of the French political figures in the aftermath of the revolution of 1789, and a leading member of the liberal opposition to Napoleon and later to the restored Bourbon monarchy. The texts included in this volume are widely regarded as one of the classic formulations of modern liberal doctrine.

The 2013 Ebola virus outbreak in West Africa, as of writing, is declining in reported human cases and mortalities. The resulting devastation caused highlights how health systems, in particular in West Africa, and in terms of global pandemic planning, are ill prepared to react to zoonotic pathogens. In this paper we propose One Health as a strategy to prevent zoonotic outbreaks as a shared goal: that human and Great Ape vaccine trials could benefit both species. Only recently have two phase (...) 2/3 Ebola human vaccine trials been started in West Africa. This paper argues for a conceptual change in pandemic preparedness. We first discuss the ethics of One Health. Next, we focus on the current Ebola outbreak and defines its victims. Third, we present the notion of a ‘shared benefit’ approach, grounded in One Health, and argue for the vaccination of wild apes in order to protect both apes and humans. We believe that a creation of such inter-species immunity is an exemplar of One Health, and that it is worth pursuing as a coextensive public health approach. (shrink)

Bioethics, Volume 36, Issue 4, Page 348-355, May 2022.

I defend a deontological social contract justification of punishment for philosophers who deny free will and moral responsibility (FW/MR). Even if nobody has FW/MR, a criminal justice system is fair to the people it targets if we would consent to it in a version of original position deliberation where we assumed that we would be targeted by the justice system when the veil is raised. Even if we assumed we would be convicted of a crime, we would consent to the (...) imprisonment of violent criminals if prison conditions were better than the state of nature but deterring enough to prevent the state of nature. (shrink)

Both traditional and naturalistic epistemologists have long assumed that the examination of human psychology has no relevance to the prescriptive goal of traditional epistemology, that of providing first-person guidance in determining the truth. Contrary to both, I apply insights about the psychology of human perception and concept-formation to a very traditional epistemological project: the foundationalist approach to the epistemic regress problem. I argue that direct realism about perception can help solve the regress problem and support a foundationalist account of justification, (...) but only if it is supplemented by an abstractionist theory of concept-formation, the view that it is possible to abstract concepts directly from the empirically given. Critics of direct realism like Laurence BonJour are correct that an account of direct perception by itself does not provide an adequate account of justification. However a direct realist account of perception can inform the needed theory of concept-formation, and leading critics of abstractionism like McDowell and Sellars, direct realists about perception themselves, fail to appreciate the ways in which their own views about perception help fill gaps in earlier accounts of abstractionism. Recognizing this undercuts both their objections to abstractionism and (therefore) their objections to foundationalism. (shrink)

Sheds new light on Heidegger's early theological development.

Benjamin Barber is one of America's preeminent political theorists. He has been a significant voice in the continuing debate about the nature and role of democracy in the contemporary world. A Passion for Democracy collects twenty of his most important writings on American democracy. Together they refine his distinctive position in democratic theory. Barber's conception of "strong democracy" contrasts with traditional concepts of "liberal democracy," especially in its emphasis on citizen participation in central issues of public debate. These essays (...) critique the "thin representation" of liberal democracy and buttress the arguments presented in Barber's twelve books, most recently in his well-received Jihad vs. McWorld: How Globalism and Tribalism Are Re-shaping the World. In these pieces, Barber argues for participatory democracy without dependence on abstract metaphysical foundations, and he stresses the relationship among democracy and civil society, civic education, and culture. A Passion for Democracy is divided into four sections. In the first, "American Theory: Democracy, Liberalism, and Rights," Barber addresses issues of ongoing relevance to today's debates about the roots of participatory democracy, including individualism vs. community, the importance of consent, and the irrelevance of Marxism. Essays in the second section, "American Practice: Leadership, Citizenship, and Censorship" provide a "strong democracy" critique of American democratic practice. "Education for Democracy: Civic Education, Service, and Citizenship" applies Barber's theories to three related topics and includes his much-discussed essay "America Skips School." The final section, "Democracy and Technology: Endless Frontier or End of Democracy?" provides glimpses into a future that technology alone cannot secure for democracy. In his preface, Barber writes: "In these essays... I have been hard on my country. Like most ardent democrats, I want more for it than it has achieved, despite the fact that it has achieved more than most people have dared to want." This wide-ranging collection displays not only his passion for democracy, but also his unique perspective on issues of abiding importance for the democratic process. (shrink)

Featuring a new, explanatory Foreword by Justice Cardozo's premier biographer, this renowned and much-used analysis of the process of judicial decision-making includes embedded page numbers from the original 1921 edition for continuity of citations and syllabi.

During the 2020 COVID-19 pandemic, open science has become central to experimental, public health, and clinical responses across the globe. Open science is described as an open commons, in which a right to science renders all possible scientific data for everyone to access and use. In this common space, capitalist platforms now provide many essential services and are taking the lead in public health activities. These neoliberal businesses, however, have a problematic role in the capture of public goods. This paper (...) argues that the open commons is a community of rights, consisting of people and institutions whose interests mutually support the public good. If OS is a cornerstone of public health, then reaffirming the public good is its overriding purpose, and unethical platforms ought to be excluded from the commons and its benefits. (shrink)

Marshall and colleagues (2024) offer a framework for emergency physicians (EPs) tasked with caring for “resuscitated opioid users”—or patients who have recently overdosed on opioids. This framework...

Worship is a topic that is rarely considered by philosophers of religion. In a recent paper, Tim Bayne and Yujin Nagasawa challenge this trend by offering an analysis of worship and by considering some difficulties attendant on the claim that worship is obligatory. I argue that their case for there being these difficulties is insufficiently supported. I offer two reasons that a theist might provide for the claim that worship is obligatory: a divine command, and the demands of justice with (...) respect to God's redemption of humanity. I also challenge the soundness of some of the analogies they employ in their argument. (shrink)

This paper is about the moral status of those human beings with profound intellectual disabilities (PIDs). We hold the common sense view that they have equal status to ‘normal’ human beings, and a higher status than any non-human animal. We start with an admission, however: we don’t know how to give a fully satisfying theoretical account of the grounds of moral status that explains this view. And in fact, not only do we not know how to give such an account, (...) but the most satisfying account of moral status that we know (which we call ‘the standard account’) entails that our view is false. It entails that those with PIDs have a lower status than ordinary human beings and an equal status to non-human animals. Now, in this paper, we do absolutely nothing to try to show where the standard account goes wrong, and we do absolutely nothing to resolve the difficulties we see in developing an alternative account that supports our view. Indeed, we do not give any argument against the standard account or in favour of our own view. Instead, we raise the following question: in order to be justified in continuing to hold our view, are we obliged to give such an account? Our answer will be that we are not. (shrink)

The polarization of the individual and the community that underlies much of the debate between individualists and communitarians is made possible in part by the literal vanishingof civil society—the domain whose middling terms mediate the stark opposition of state and private sectors and offer women and men a space for activity that is both voluntary and public. Modern democratic ideology and the reality of our political practices sometimesseem to yield only a choice between elephantine and paternalistic government or a radically (...) solipsistic and nearly anarchic private market sector—overnment gargantuanism or private greed. Americans do not much like either one. President Clinton's callfor national service draws us out of our selfishness without kindling any affection for government. Private markets service our avarice without causing us to like ourselves. The question of how America's decentralized and multi-vocal public can secure a coherentvoice in debates over public policy under the conditions precipitated by so hollow and disjunctive a dichotomy is perhaps the most important issue facing both the political theory and social science of democracy and the practice of democratic politics in America today. Two recent stories out of Washington suggest just how grave the situation has become. Health-care reform failed in a paroxysm of mutual recrimination highlighted by the successful campaign of the private sector against a presidential program that seemed to be widely misunderstood. The public at large simply went missing in the debates. (shrink)

Sedlakova and Trachsel (2023) discuss the ethical concerns associated with employing what they term conversational artificial intelligence as therapist substitutes. Given their apprehensions, they...

Wie andere aufgeschlossene Fachvertreter seiner Generation hat der kanadische Jesuit Bernard Lonergan (1904–1984) dazu beigetragen, die katholische Theologie umfassend zu erneuern. Angesichts der offenkundigen Grenzen der Neuscholastik, die sich im Laufe des 19. Jahrhunderts als das Modell durchgesetzt hatte, suchte er schon früh nach einer Alternative. Bei aller Skepsis gegenüber dem herrschenden Thomismus schätzte er Thomas von Aquin in hohem Maß. Das betraf insbesondere dessen Bemühen, die damals aktuellen wissenschaftlichen und methodischen Erkenntnisse einzubeziehen. Lonergan wollte dies ebenso tun. Es ging (...) ihm darum, der katholischen Theologie eine neue Richtung zu geben, also von der Neuscholastik abzurücken. Denn diese berücksichtigte weder das erkennende Subjekt noch das zu erkennende Objekt hinreichend. (shrink)