Chimpanzee language studies have generated much heated controversy, as Roger Fouts can attest from firsthand experience. Perhaps this is because language is usually considered to be what truly distinguishes humans from apes. If chimps can indeed be taught the rudiments of language, then the difference between them and us is not as great as we might have thought. It is a matter of degree rather than kind, a continuity, and our species is not so special after all. The advantage of (...) this continuity thesis, as Fouts has emphasized, is that it conforms to the general tenets of evolutionary theory, and fits well with the evidence from paleontology and genetics that suggests that apes and humans are close cousins. It also .. (shrink)

The primary quantum mechanical equation of motion entails that measurements typically do not have determinate outcomes, but result in superpositions of all possible outcomes. Dynamical collapse theories (e.g. GRW) supplement this equation with a stochastic Gaussian collapse function, intended to collapse the superposition of outcomes into one outcome. But the Gaussian collapses are imperfect in a way that leaves the superpositions intact. This is the tails problem. There are several ways of making this problem more precise. But many authors dismiss (...) the problem without considering the more severe formulations. Here I distinguish four distinct tails problems. The first (bare tails problem) and second (structured tails problem) exist in the literature. I argue that while the first is a pseudo-problem, the second has not been adequately addressed. The third (multiverse tails problem) reformulates the second to account for recently discovered dynamical consequences of collapse. Finally the fourth (tails problem dilemma) shows that solving the third by replacing the Gaussian with a non-Gaussian collapse function introduces new conflict with relativity theory. (shrink)

Does consciousness collapse the quantum wave function? This idea was taken seriously by John von Neumann and Eugene Wigner but is now widely dismissed. We develop the idea by combining a mathematical theory of consciousness (integrated information theory) with an account of quantum collapse dynamics (continuous spontaneous localization). Simple versions of the theory are falsified by the quantum Zeno effect, but more complex versions remain compatible with empirical evidence. In principle, versions of the theory can be tested by experiments with (...) quantum computers. The upshot is not that consciousness-collapse interpretations are clearly correct, but that there is a research program here worth exploring. (shrink)

The many worlds interpretation of quantum mechanics (MWI) states that the world we live in is just one among many parallel worlds. It is widely believed that because of this commitment to parallel worlds, the MWI violates common sense. Some go so far as to reject the MWI on this basis. This is despite its myriad of advantages to physics (e.g. consistency with relativity theory, mathematical simplicity, realism, determinism, etc.). Here, we make the case that common sense in fact favors (...) the MWI. We argue that causal explanations are commonsensical only when they are local causal explanations. We present several quantum mechanical experiments that seem to exhibit nonlocal “action at a distance”. Under the assumption that only one world exists, these experiments seem immune to local causal explanation. However, we show that the MWI, by taking all worlds together, can provide local causal explanations of the experiments. The MWI therefore restores common sense to physical explanation. (shrink)

Under what conditions are material objects, such as particles, parts of a whole object? This is the composition question and is a longstanding open question in philosophy. Existing attempts to specify a non-trivial restriction on composition tend to be vague and face serious counterexamples. Consequently, two extreme answers have become mainstream: composition (the forming of a whole by its parts) happens under no or all conditions. In this paper, we provide a self-contained introduction to the integrated information theory of consciousness (...) (IIT). We show that IIT specifies a non-trivial restriction on composition: composition happens when integrated information is maximized. We compare the IIT-restriction to existing proposals and argue that the IIT-restriction has significant advantages, especially in response to the problems of vagueness and counterexamples. An appendix provides an introduction to calculating parts and wholes with a simple system. (shrink)

In [1] it is claimed that, based on radiation emission measurements described in [2], a certain “variant” of the Orch OR theory has been refuted. I agree with this claim. However, the significance of this result for Orch OR per se is unclear. After all, the refuted “variant” was never advocated by anyone, and it contradicts the views of Hameroff and Penrose (hereafter: HP) who invented Orch OR [3]. My aim is to get clear on this situation. I argue that (...) it is indeed reasonable to speak of “variants” here. Orch OR is not a complete model of reality but a work in progress. At its core, it claims that wavefunction collapse is a real physical event that has something to do with gravity (“OR”) and that consciousness depends on orchestrated collapses in microtubules (“Orch”). There are many ways one could make these base ideas precise hence many “variants”. Furthermore, the ways that HP aim to make these ideas precise are radical and incomplete. If they don’t work out, Orch OR will need to fall back on another variant. Thus, I believe the significance of [1-2] for Orch OR is that it cuts out a small class of possible variants and leaves behind questions and challenges for the rest, including the variant preferred by HP. (shrink)

Discrimination, understood as differential treatment of individuals on the basis of their respective group memberships, is widely considered to be morally wrong. This moral judgment is backed in many jurisdictions with the passage of equality of opportunity legislation, which aims to ensure that racial, ethnic, religious, sexual, sexual-orientation, disability and other groups are not subjected to discrimination. This chapter explores the conceptual underpinnings of discrimination and equality of opportunity using the tools of analytical moral and political philosophy.

This introductory chapter provides an overview of the recent debate about responsibility and distributive justice. It traces the recent philosophical focus on distributive justice to John Rawls and examines two arguments in his work which might be taken to contain the seeds of the focus on responsibility in later theories of distributive justice. It examines Ronald Dworkin's ‘equality of resources’, the ‘luck egalitarianism’ of Richard Arneson and G. A. Cohen, as well as the criticisms of their work put forward by (...) Elizabeth Anderson, Marc Fleurbaey, Susan Hurley, and Jonathan Wolff. Key concepts such as responsibility (individual and collective), luck (thin and thick; brute and option), control, desert, and equality of opportunity are delineated, and the implementation of responsibility-sensitive accounts of justice is considered. The chapters of this book are positioned in relation to the wider literature on responsibility and distributive justice, and a brief outline of the chapters is provided. (shrink)

This chapter identifies three contrasts between responsibility-sensitive justice and desert-sensitive justice. First, while responsibility may be appraised on prudential or moral grounds, it is argued that desert is necessarily moral. As moral appraisal is much more plausible, responsibility-sensitive justice is only attractive in one of its two formulations. Second, strict responsibility sensitivity does not compensate for all forms of bad brute luck, and forms of responsibility-sensitive justice like luck egalitarianism that provide such compensation do so by appealing to independent moral (...) concerns such as equality. Desert-sensitive justice can deliver the appropriate compensation without relying on external moral resources. Finally, while responsibility-sensitive justice harshly refuses to provide for those whose basic needs are unsatisfied due to their own negligent actions, this result can be averted by desert-sensitive justice as it can take into account responsibility-independent considerations. In sum, desert-sensitive justice appears to offer a tighter fit with considered judgments about justice. (shrink)

A familiar interpretation of quantum mechanics (one of a number of views sometimes labeled the "Copenhagen interpretation'"), takes its empirical apparatus at face value, holding that the quantum wave function evolves by the Schrödinger equation except on certain occasions of measurement, when it collapses into a new state according to the Born rule. This interpretation is widely rejected, primarily because it faces the measurement problem: "measurement" is too imprecise for use in a fundamental physical theory. We argue that this is (...) a weak objection, as there may be many ways of making "measurement" precise. However, measurement-collapse interpretations face a more serious objection: a dilemma tied to the quantum Zeno effect. Is measurement itself an observable that can enter superpositions? If yes, then the standard measurement-collapse dynamics is ill-defined. If no, then (at least if measurement is an observable), measurements can never start or finish. The best way out is to deny that measurement is an observable, but this leads to strong and revisionary consequences. This reinforces the view that there is no nonrevisionary interpretation of quantum mechanics. (shrink)

This article argues that, suitably modified, the method of reflective equilibrium is a plausible way of selecting moral principles. The appropriate conception of the method is wide and radical, admitting consideration of a full range of moral principles and arguments, and requiring the enquiring individual to consider others' views and undergo experiences that may offset any formative biases. The individual is not bound by his initial considered judgments, and may revise his view in any way whatsoever. It is appropriate to (...) describe the method as a balance between coherentism and fallibilist foundationalism. With these points in mind, various criticisms, including the claims that considered judgments are not initially credible and are shaped by prejudice, and that the method itself fails to determine principle selection, are challenged. (shrink)

Perceptual filling-in for vision is the insertion of visual properties (e.g., color, contour, luminance, or motion) into one’s visual field, when those properties have no corresponding retinal input. This paper introduces and provides preliminary empirical support for filled/non-filled pairs, pairs of images that appear identical, yet differ by amount of filling-in. It is argued that such image pairs are important to the experimental testing of theories of consciousness. We review recent experimental research and conclude that filling-in involves brain activity with (...) relatively high integrated information (Phi) compared to veridical visual perceptions. We then present filled/non-filled pairs as an empirical challenge to the integrated information theory of consciousness, which predicts that phenomenologically identical experiences depend on brain processes with identical Phi. (shrink)

Several attempts have been made to apply the choice-sensitive theory of distributive justice, luck egalitarianism, in the context of health and healthcare. This article presents a framework for this discussion by highlighting different normative decisions to be made in such an application, some of the objections to which luck egalitarians must provide answers and some of the practical implications associated with applying such an approach in the real world. It is argued that luck egalitarians should address distributions of health rather (...) than healthcare, endorse an integrationist theory that combines health concerns with general distributive concerns and be pluralist in their approach. It further suggests that choice-sensitive policies need not be the result of applying luck egalitarianism in this context. (shrink)

The purpose of this book is to explain Quantum Bayesianism (‘QBism’) to “people without easy access to mathematical formulas and equations” (4-5). Qbism is an interpretation of quantum mechanics that “doesn’t meddle with the technical aspects of the theory [but instead] reinterprets the fundamental terms of the theory and gives them new meaning” (3). The most important motivation for QBism, enthusiastically stated on the book’s cover, is that QBism provides “a way past quantum theory’s paradoxes and puzzles” such that much (...) of the weirdness associated with quantum theory “dissolves under the lens of QBism”. (shrink)

Extended and distributed cognition theories argue that human cognitive systems sometimes include non-biological objects. On these views, the physical supervenience base of cognitive systems is thus not the biological brain or even the embodied organism, but an organism-plus-artifacts. In this paper, we provide a novel account of the implications of these views for learning, education, and assessment. We start by conceptualising how we learn to assemble extended cognitive systems by internalising cultural norms and practices. Having a better grip on how (...) extended cognitive systems are assembled, we focus on the question: If our cognition extends, how should we educate and assess such extended cognitive systems? We suggest various ways to minimize possible negative effects of extending one’s cognition and to efficiently find and organise (online) information by adopting a virtue epistemology approach. Educational and assessment implications are foregrounded, particularly in the case of Danish students’ use of the Internet during exams. (shrink)

Luck egalitarianism is a family of egalitarian theories of distributive justice that aim to counteract the distributive effects of luck. This article explains luck egalitarianism's main ideas, and the debates that have accompanied its rise to prominence. There are two main parts to the discussion. The first part sets out three key moves in the influential early statements of Dworkin, Arneson, and Cohen: the brute luck/option luck distinction, the specification of brute luck in everyday or theoretical terms and the specification (...) of advantage as resources, welfare, or some combination of these. The second part covers three later developments: the democratic egalitarian critique of luck egalitarianism, the luck egalitarian acceptance of pluralism, and luck egalitarian doubts about the significance of the brute luck/option luck distinction. (shrink)

The standard version of sufficientarianism maintains that providing people with enough, or as close to enough as is possible, is lexically prior to other distributive goals. This article argues that this is excessive – more than distributive justice allows – in four distinct ways. These concern the magnitude of advantage, the number of beneficiaries, responsibility and desert, and above-threshold distribution. Sufficientarians can respond by accepting that providing enough unconditionally is more than distributive justice allows, instead balancing sufficiency against other considerations.

Critics of luck egalitarianism have claimed that, far from providing a justification for the public insurance functions of a welfare state as its proponents claim, the view objectionably abandons those who are deemed responsible for their dire straits. This article considers seven arguments that can be made in response to this ‘abandonment objection’. Four of these arguments are found wanting, with a recurrent problem being their reliance on a dubious sufficientarian or quasi-sufficientarian commitment to provide a threshold of goods unconditionally. (...) Three arguments succeed, showing that luck egalitarians have good reasons for assisting ‘negligent victims’ on account of changes that may occur in an individual between the time of their choice and their subsequent disadvantage, bad option luck, and doubts about free will and responsibility. Luck egalitarianism is therefore shown to offer strong support for public insurance. (shrink)

The method of reflective equilibrium focuses on the relationship between principles and judgments. Principles are relatively general rules for comprehending the area of enquiry. Judgments are our intuitions or commitments, ‘at all levels of generality’ (Rawls 1975: 8), regarding the subject matter. The basic idea of reflective equilibrium is to bring principles and judgments into accord. This can be achieved by revising the principles and/or the judgments. -/- I first look at normative political judgments (Section 2) before considering the role (...) of principles, arguments, devices of representation and background theory in wide reflective equilibrium (Section 3). I then consider two of the main challenges to the method (Section 4), and show how to use it to deliberate about substantive political principles (Section 5). I conclude with an extended example of the method in action (Section 6). (shrink)

People are increasingly exposed to conflicting health information and must navigate this information to make numerous decisions, such as which foods to consume, a process many find difficult. Although some consumers attribute these disagreements to aspects related to uncertainty and complexity of research, many use a narrower set of credibility-based explanations. Experts’ views on disagreements are underinvestigated and lack explicit identification and classification of the differences in causes for disagreement. Consequently, there is a gap in existing literature to understand the (...) range of reasons for these contradictions. Combining the findings from a literature study and expert interviews, a taxonomy of disagreements was developed. It identifies 10 types of disagreement classified under three dimensions: informant-, information- and uncertainty-related causes for disagreement. The taxonomy may assist with adoption of more effective strategies to deal with conflicting information and contributes to research and practice of science communication in the context of disagreement. (shrink)

Many political philosophers maintain that beneficiaries of injustice are under special obligations to assist victims of injustice. However, the examples favoured by those who endorse this view equally support an alternative luck egalitarian view, which holds that special obligations should be assigned to those with good brute luck. From this perspective the distinguishing features of the benefiting view are (1) its silence on the question of whether to allocate special obligations to assist the brute luck worse off to those who (...) are well off as a matter of brute luck but not as a result of injustice, and (2) its silence on the question of whether to allocate assistance to those who are badly off as a matter of brute luck but not as a result of injustice. In this new light, the benefiting view is harder to justify. (shrink)

This paper considers issues raised by Elizabeth Anderson’s recent critique of the position she terms ‘luck egalitarianism’. It is maintained that luck egalitarianism, once clarified and elaborated in certain regards, remains the strongest egalitarian stance. Anderson’s arguments that luck egalitarians abandon both the negligent and prudent dependent caretakers fails to account for the moderate positions open to luck egalitarians and overemphasizes their commitment to unregulated market choices. The claim that luck egalitarianism insults citizens by redistributing on the grounds of paternalistic (...) beliefs, pity and envy, and by making intrusive and stigmatizing judgments of responsibility, fails accurately to characterize the luck egalitarian’s rationale for redistribution and relies upon luck egalitarians being insensitive to the danger of stigmatization. The luck egalitarian position is reinforced by the fact that Anderson’s favoured conception of equality, ‘democratic equality’, is counterintuitively indifferent to all unchosen inequalities, including intergenerational inequalities, once bare social minima are met. (shrink)

According to all-luck egalitarianism, the differential distributive effects of both brute luck, which defines the outcome of risks which are not deliberately taken, and option luck, which defines the outcome of deliberate gambles, are unjust. Exactly how to correct the effects of option luck is, however, a complex issue. This article argues that (a) option luck should be neutralized not just by correcting luck among gamblers, but among the community as a whole, because it would be unfair for gamblers as (...) a group to be disadvantaged relative to non-gamblers by bad option luck; (b) individuals should receive the warranted expected results of their gambles, except insofar as individuals blamelessly lacked the ability to ascertain which expectations were warranted; and (c) where societal resources are insufficient to deliver expected results to gamblers, gamblers should receive a lesser distributive share which is in proportion to the expected results. Where all-luck egalitarianism is understood in this way, it allows risk-takers to impose externalities on non-risk-takers, which seems counterintuitive. This may, however, be an advantage as it provides a luck egalitarian rationale for assisting ‘negligent victims’. (shrink)

The assertion that an experiment by Afshar et al. demonstrates violation of Bohr’s Principle of Complementarity is based on the faulty assumption that which-way information in a double-slit interference experiment can be retroactively determined from a future measurement.

David Miller has objected to the cosmopolitan argument that it is arbitrary and hence unfair to treat individuals differently on account of things for which they are not responsible. Such a view seems to require, implausibly, that individuals be treated identically even where (unchosen) needs differ. The objection is, however, inapplicable where the focus of cosmopolitan concern is arbitrary disadvantage rather than arbitrary treatment. This 'unfair disadvantage argument' supports a form of global luck egalitarianism. Miller also objects that cosmopolitanism is (...) unable to accommodate special obligations generated by national membership. Cosmopolitanism can, however, accommodate many special obligations to compatriots. Those which it cannot accommodate are only morally compelling if we assume what the objection claims to prove - that cosmopolitanism is mistaken. Cosmopolitanism construed as global luck egalitarianism is therefore able to withstand both of Miller's objections, and has significant independent appeal on account of the unfair disadvantage argument. (shrink)

Emissions grandfathering maintains that prior emissions increase future emission entitlements. The view forms a large part of actual emission control frameworks, but is routinely dismissed by political theorists and applied philosophers as evidently unjust. A sympathetic theoretical reconsideration of grandfathering suggests that the most plausible version is moderate, allowing that other considerations should influence emission entitlements, and be justified on instrumental grounds. The most promising instrumental justification defends moderate grandfathering on the basis that one extra unit of emission entitlements from (...) a baseline of zero emissions increases welfare to a greater extent where it is assigned to a high emitter than where it is assigned to a low emitter. Moderate grandfathering can be combined with basic needs and ability to pay considerations to provide an attractive approach to allocating emission entitlements. (shrink)

Discussions of where the costs of climate change adaptation and mitigation should fall often focus on the 'polluter pays principle' or the 'ability to pay principle'. Simon Caney has recently defended a 'hybrid view', which includes versions of both of these principles. This article argues that Caney's view succeeds in overcoming several shortfalls of both principles, but is nevertheless subject to three important objections: first, it does not distinguish between those emissions which are hard to avoid and those which are (...) easy to avoid; second, its only partial reference to all-things-considered justice means it cannot provide a full account even of climate justice; and third, it assigns to the poor very limited duties to meet climate change costs, even where they have created those costs, which may incentivise them to increase emissions. An alternative pluralistic account which avoids these objections is presented. (shrink)

This article argues for an unconventional interpretation of Arthur O. Lovejoy’s distinctive approach to method in the history of ideas. It is maintained that the value of the central concept of the ‘unit-idea’ has been misunderstood by friends and foes alike. The commonality of unit-ideas at different times and places is often defined in terms of familial resemblance. But such an approach must necessarily define unit-ideas as being something other than the smallest conceptual unit. It is therefore in tension with (...) Lovejoy’s methodological prescription and, more importantly, disregards a potentially important aspect of intellectual history – the smaller conceptual units themselves. In response to this, an alternative interpretation of unit-ideas as ‘elemental’ – as the smallest identifiable conceptual components – is put forward. Unlike the familial resemblance approach, the elemental approach can provide a plausible explanation for changes in ideas. These are construed as being either the creation of new unit-ideas, the disappearance of existing ones, or alterations in the groups of unit-ideas that compose idea-complexes. The focus on the movement of unit-ideas and idea-complexes through history can also be sensitive to contextual issues, carefully distinguishing the different meanings that single words may have, in much the way that both Lovejoy and his influential critic Quentin Skinner suggest. (shrink)

Discrimination might be considered unjust on account of the comparative disadvantage it imposes, the absolute disadvantage it imposes, the disrespect it shows, or the prejudice it shows. This article argues that each of these accounts overlooks some cases of unjust discrimination. In response to this state of affairs we might combine two or more of these accounts. A promising approach combines the comparative disadvantage and absolute disadvantage accounts.

This review article of Shlomi Segall's Health, Luck, and Justice (Princeton University Press, 2010) addresses three issues: first, Segall’s claim that luck egalitarianism, properly construed, does not object to brute luck equality; second, Segall’s claim that brute luck is properly construed as the outcome of actions that it would have been unreasonable to expect the agent to avoid; and third, Segall’s account of healthcare and criticism of rival views. On the first two issues, a more conventional form of luck egalitarianism (...) – that is, one which objects to brute luck even if it creates equality, and which construes brute luck as the inverse of agent responsibility – is defended. On the third issue, strengths and weaknesses in Segall’s criticism of Rawlsian, democratic egalitarian, and all-luck egalitarian approaches to healthcare, and in his own luck egalitarian approach, are identified. (shrink)

Contemporary discussions of egalitarian justice have often focused on the issue of expensive taste. G.A. Cohen has recently abandoned the view that all chosen disadvantages are non-compensable, now maintaining that chosen expensive judgmental tastes—those endorsed by valuational judgment—are compensable as it is unreasonable to expect persons not to develop them. But chosen expensive brute taste—the main type of non-compensable expensive taste on the new scheme—cannot be described in such a way that there is a normative difference between it and chosen (...) expensive judgmental taste. As there are related problems with denying compensation for the other kind of expensive taste that might remain non-compensable, Cohen's position on taste appears to be either implausible or virtually indistinguishable from that of equality of welfare. However, compensation for valuational judgment-based expensive taste might be justified on grounds of responsibility. (shrink)

Many naive realists endorse a negative disjunctivist strategy in order to deal with the challenge presented by the possibility of phenomenologically indistinguishable halucination. In the first part of this paper I argue that this approach is methodologically inconsistent because it undercuts the phenomenological motivation that underlies the the appeal of naive realism. In the second part of the paper I develop an alternative to the negative disjunctivist account along broadly Meinongian lines. In the last section of this paper I consider (...) and evaluate a somewhat similar but rival view of hallucination developed by Mark Johnston. (shrink)

Some critics of luck egalitarianism have suggested that its reference to responsibility leaves it either assuming metaphysical libertarianism or (in the inevitable absence of a resolution of the free will problem) practically impotent. This paper argues that luck egalitarianism need not fall into either trap. It may in fact be sensitive to the possibility that libertarianism is false, and would not be undermined were this the case. Here luck egalitarianism actually fares better than outcome egalitarianism, which assumes, in just the (...) way luck egalitarianism allegedly does, a controversial metaphysical position. There is, moreover, little difficulty in applying luck egalitarianism in practical contexts on the basis of our best guess about the relevant metaphysical questions. This solution is, of course, non-ideal, but appears preferable to the alternatives, such as simply assuming that metaphysical account of responsibility that offers the best fit with our favored theory of distributive justice. (shrink)

This articles proposes that theories and principles of distributive justice be considered substantively egalitarian iff they satisfy each of three conditions: (1) they consider the bare fact that a person is in certain circumstances to be a conclusive reason for placing another relevantly identically entitled person in the same circumstances, except where this conflicts with other similarly conclusive reasons arising from the circumstances of other persons; (2) they can be stated as 'equality of x for all persons', making no explicit (...) or implicit exclusion of persons or individuals and showing no greater concern and respect for some rather than others; and (3) they pursue equality in a dimension that is valuable to egalitarians. On this construal, prioritarianism and Dworkinian equality of resources, a view often identified as luck egalitarian, are not substantively egalitarian, but equality of opportunity, the standard form of luck egalitarianism, may be. (shrink)

Ronald Dworkin maintains that value is unitary, in the sense that different values do not conflict. This article resists this ‘hedgehog’ view with reference to the values of equality and utility. These appear to yield conflicting prescriptions in cases where one possible distribution gives different individuals the same amount of advantage, and the other contains an unequal distribution of a greater overall amount of advantage. Hedgehogs might respond to such a case in two ways. First, they might claim that equality (...) and utility are not truly in conflict. However, this claim seems implausible on our ordinary concepts of these values, and Dworkin does not provide grounds for revising our concepts. Second, they might deny that one of these values – utility – is a genuine value. However, one of the two aspects of Dworkin’s fundamental principle of equal concern appears to be supportive of utility, and he offers no good arguments for his preferred strategy of accommodating this aspect of equal concern within the value of equality. Furthermore, the alternative ‘fox’ view, which recognizes equality and utility as conflicting values, each accommodating one aspect of equal concern, has the advantage that it stays truer to familiar moral concepts. (shrink)

Emissions grandfathering holds that a history of emissions strengthens an agent’s claim for future emission entitlements. Though grandfathering appears to have been influential in actual emission control frameworks, it is rarely taken seriously by philosophers. This article presents an argument for thinking this an oversight. The core of the argument is that members of countries with higher historical emissions are typically burdened with higher costs when transitioning to a given lower level of emissions. According to several appealing views in political (...) philosophy (utilitarianism, egalitarianism, prioritarianism, and sufficientarianism) they are therefore entitled to greater resources, including emission entitlements, than those in similar positions but with lower emissions. This grandfathering may play an especially important role in allocating emission entitlements among rich countries. (shrink)

A large proportion of humankind today lives in avoidable poverty. This article examines whether affluent individuals and governments have moral duties to change this situation. It is maintained that an alternative to the familiar accounts of transdomestic distributive justice and personal ethics put forward by writers such as Peter Singer, John Rawls, and Thomas Pogge is required, since each of these accounts fails to reflect the full range of relevant considerations. A better account would give some weight to overall utility, (...) the condition of the worst off, and individual responsibility. This approach provides robust support to global poverty alleviation. (shrink)

This article explores the Rawlsian goal of ensuring that distributions are not influenced by the morally arbitrary. It does so by bringing discussions of distributive justice into contact with the debate over moral luck initiated by Williams and Nagel. Rawls’ own justice as fairness appears to be incompatible with the arbitrariness commitment, as it creates some equalities arbitrarily. A major rival, Dworkin’s version of brute luck egalitarianism, aims to be continuous with ordinary ethics, and so is (a) sensitive to non-philosophical (...) beliefs about free will and responsibility, and (b) allows inequalities to arise on the basis of option luck. But Dworkin does not present convincing reasons in support of continuity, and there are compelling moral reasons for justice to be sensitive to the best philosophical account of free will and responsibility, as is proposed by the revised brute luck egalitarianism of Arneson and Cohen. While Dworkinian brute luck egalitarianism admits three sorts of morally arbitrary disadvantaging which correspond to three forms of moral luck (constitutive, circumstantial, and option luck), revised brute luck egalitarianism does not disadvantage on the basis of constitutive or circumstantial luck. But it is not as sensitive to responsibility as it needs to be to fully extinguish the influence of the morally arbitrary, for persons under it may exercise their responsibility equivalently yet end up with different outcomes on account of option luck. It is concluded that egalitarians should deny the existence of distributive luck, which is luck in the levels of advantage that individuals are due. (shrink)

The Schrodinger's Cat and Wigner's Friend thought experiments, which logically follow from the universality of quantum mechanics at all scales, have been repeatedly characterized as possible in principle, if perhaps difficult or impossible for all practical purposes. I show in this paper why these experiments, and interesting macroscopic superpositions in general, are actually impossible in principle. First, no macroscopic superposition can be created via the slow process of natural quantum packet dispersion because all macroscopic objects are inundated with decohering interactions (...) that constantly localize them. Second, the SC/WF thought experiments depend on von Neumann-style amplification to achieve quickly what quantum dispersion achieves slowly. Finally, I show why such amplification cannot produce a macroscopic quantum superposition of an object relative to an external observer, no matter how well isolated the object from the observer, because: the object and observer are already well correlated to each other; and reducing their correlations to allow the object to achieve a macroscopic superposition relative to the observer is equally impossible, in principle, as creating a macroscopic superposition via the process of natural quantum dispersion. (shrink)

The potential for scalable quantum computing depends on the viability of fault tolerance and quantum error correction, by which the entropy of environmental noise is removed during a quantum computation to maintain the physical reversibility of the computer’s logical qubits. However, the theory underlying quantum error correction applies a linguistic double standard to the words “noise” and “measurement” by treating environmental interactions during a quantum computation as inherently reversible, and environmental interactions at the end of a quantum computation as irreversible (...) measurements. Specifically, quantum error correction theory models noise as interactions that are uncorrelated or that result in correlations that decay in space and/or time, thus embedding no permanent information to the environment. I challenge this assumption both on logical grounds and by discussing a hypothetical quantum computer based on “position qubits.” The technological difficulties of producing a useful scalable position-qubit quantum computer parallel the overwhelming difficulties in performing a double-slit interference experiment on an object comprising a million to a billion fermions. (shrink)

Marine ecosystems are under increasing pressure from human activity, yet successful management relies on knowledge. The evidence-based policy (EBP) approach has been promoted on the grounds that it provides greater transparency and consistency by relying on ‘high quality’ information. However, EBP also creates epistemic responsibilities. Decision-making where limited or no empirical evidence exists, such as is often the case in marine systems, creates epistemic obligations for new information acquisition. We argue that philosophical approaches can inform the science-policy interface. Using marine (...) biosecurity examples, we specifically examine the epistemic challenges in the acquisition and acceptance of evidence to inform policy, discussing epistemic due care and biases in consideration of evidence. (shrink)

South Africa is a highly distributively unequal country, and its inequality continues to be largely along racial lines. Such circumstances call for assessment from the perspective of contemporary theories of distributive justice. Three such theories—Rawlsian justice, utilitarianism, and luck egalitarianism—are described and applied. Rawls' difference principle recommends that the worst off be made as well as they can be, a standard which South Africa clearly falls short of. Utilitarianism recommends the maximization of overall societal well-being, a goal which South Africa (...) again fails to achieve given its severe inequality and the fact of the diminishing marginal value of money—that a given amount of money tends to produce more utility for a poor person than it does for a rich person. The final theory, luck egalitarianism, aims to make distributions sensitive to individual exercises of responsibility. This view also objects to South Africa's inequality, this time on the basis that the poor are overwhelmingly worse off through no fault or choice of their own. These major theories of distributive justice therefore all propose large-scale redistribution to the benefit of the (predominantly black) poor. Perhaps more surprisingly, all three views also provide support for socio-economic affirmative action, as opposed to South Africa's race-based Black Economic Empowerment. (shrink)

I show in this paper why the universality of quantum mechanics at all scales, which implies the possibility of Schrodinger's Cat and Wigner's Friend thought experiments, cannot be experimentally confirmed, and why macroscopic superpositions in general cannot be observed or measured, even in principle. Through the relativity of quantum superposition and the transitivity of correlation, it is shown that from the perspective of an object that is in quantum superposition relative to a macroscopic measuring device and observer, the observer is (...) already sufficiently well correlated to the measuring device that once the object correlates to the measuring device, there is no time period in which the observer can perform an appropriate interference experiment to show that the measuring device is in a superposition. (shrink)

In a recent paper, Zukowski and Markiewicz showed that Wigner’s Friend (and, by extension, Schrodinger’s Cat) can be eliminated as physical possibilities on purely logical grounds. I validate this result and demonstrate the source of the contradiction in a simple experiment in which a scientist S attempts to measure the position of object |O⟩ = |A⟩S +|B⟩S by using measuring device M chosen so that |A⟩M ≈ |A⟩S and |B⟩M ≈ |B⟩S. I assume that the measurement occurs by quantum amplification (...) without collapse, in which M can entangle with O in a way that remains reversible by S for some nonzero time period. This assumption implies that during this “reversible” time period, |A⟩M ̸= |A⟩S and |B⟩M ̸= |B⟩S – i.e., the macroscopic pointer state to which M evolves is uncorrelated to the position of O relative to S. When the scientist finally observes the measuring device, its macroscopic pointer state is uncorrelated to the object in position |A⟩S or |B⟩S, rendering the notion of “reversible measurement” a logical contradiction. (shrink)

Idealist philosophers have traditionally tried to defend their views by appealing to the claim that nonmental reality is inconceivable. A standard response to this inconceivability claim is to try to show that it is only plausible if one blurs the fundamental distinction between consciousness and its object. I try to rehabilitate the idealistic argument by presenting an alternative formulation of the idealist’s basic inconceivability claim. Rather than suggesting that all objects are inconceivable apart from consciousness, I suggest that it is (...) impossible to conceive of any such object as genuinely existent. This thesis is lent credence by the fact that only in reflective self-consciousness is existence a phenomenological datum. Not only is it the case that we are not ever aware of an object as existing, we do not have a clear understanding of what it would be like to have such an awareness. If this is true, then we have reason to believe that while consciousness exists, the objects of consciousness cannot exist. (shrink)

The universality assumption (“U”) that quantum wave states only evolve by linear or unitary dynamics has led to a variety of paradoxes in the foundations of physics. U is not directly supported by empirical evidence but is rather an inference from data obtained from microscopic systems. The inference of U conflicts with empirical observations of macroscopic systems, giving rise to the century-old measurement problem and subjecting the inference of U to a higher standard of proof, the burden of which lies (...) with its proponents. This burden remains unmet because the intentional choice by scientists to perform interference experiments that only probe the microscopic realm disqualifies the resulting data from supporting an inference that wave states always evolve linearly in the macroscopic realm. Further, the nature of the physical world creates an asymptotic size limit above which interference experiments, and verification of U in the realm in which it causes the measurement problem, seem impossible for all practical purposes if nevertheless possible in principle. This apparent natural limit serves as evidence against an inference of U, providing a further hurdle to the proponent’s currently unmet burden of proof. The measurement problem should never have arisen because the inference of U is entirely unfounded, logically and empirically. (shrink)

The assertion by Yu and Nikolic that the delayed choice quantum eraser experiment of Kim et al. empirically falsifies the consciousness-causes-collapse hypothesis of quantum mechanics is based on the unfounded and false assumption that the failure of a quantum wave function to collapse implies the appearance of a visible interference pattern.

A potentially new interpretation of quantum mechanics posits the state of the universe as a consistent set of facts that are instantiated in the correlations among entangled objects. A fact (or event) occurs exactly when the number or density of future possibilities decreases, and a quantum superposition exists if and only if the facts of the universe are consistent with the superposition. The interpretation sheds light on both in-principle and real-world predictability of the universe.