We revisit the analogy suggested by Madelung between a non-relativistic time-dependent quantum particle, to a fluid system which is pseudo-barotropic, irrotational and inviscid. We first discuss the hydrodynamical properties of the Madelung description in general, and extract a pressure like term from the Bohm potential. We show that the existence of a pressure gradient force in the fluid description, does not violate Ehrenfest’s theorem since its expectation value is zero. We also point out that incompressibility of the fluid implies conservation (...) of density along a fluid parcel trajectory and in 1D this immediately results in the non-spreading property of wave packets, as the sum of Bohm potential and an exterior potential must be either constant or linear in space. Next we relate to the hydrodynamic description a thermodynamic counterpart, taking the classical behavior of an adiabatic barotopric flow as a reference. We show that while the Bohm potential is not a positive definite quantity, as is expected from internal energy, its expectation value is proportional to the Fisher information whose integrand is positive definite. Moreover, this integrand is exactly equal to half of the square of the imaginary part of the momentum, as the integrand of the kinetic energy is equal to half of the square of the real part of the momentum. This suggests a relation between the Fisher information and the thermodynamic like internal energy of the Madelung fluid. Furthermore, it provides a physical linkage between the inverse of the Fisher information and the measure of disorder in quantum systems—in spontaneous adiabatic gas expansion the amount of disorder increases while the internal energy decreases. (shrink)

The Madelung equations map the non-relativistic time-dependent Schrödinger equation into hydrodynamic equations of a virtual fluid. While the von Neumann entropy remains constant, we demonstrate that an increase of the Shannon entropy, associated with this Madelung fluid, is proportional to the expectation value of its velocity divergence. Hence, the Shannon entropy may grow due to an expansion of the Madelung fluid. These effects result from the interference between solutions of the Schrödinger equation. Growth of the Shannon entropy due to expansion (...) is common in diffusive processes. However, in the latter the process is irreversible while the processes in the Madelung fluid are always reversible. The relations between interference, compressibility and variation of the Shannon entropy are then examined in several simple examples. Furthermore, we demonstrate that for classical diffusive processes, the “force” accelerating diffusion has the form of the positive gradient of the quantum Bohm potential. Expressing then the diffusion coefficient in terms of the Planck constant reveals the lower bound given by the Heisenberg uncertainty principle in terms of the product between the gas mean free path and the Brownian momentum. (shrink)

In Why Not Socialism?, GA Cohen defines socialism as the combined application of two moral principles: the egalitarian principle and the principle of community. The desirability of a social order organized around these two principles is illustrated by the ‘camping trip’ example. After describing the fundamental features of the camping trip scenario at reasonable length, Cohen argues that the desirability of such a social model is nearly self-explanatory, concluding therefore that the most significant challenges to socialism lie in (...) its feasibility. This article argues that the desirability of the camping trip model as an appropriate ideal for society is less obvious than Cohen acknowledges. To argue my point, I shall compare the camping trip with another social practice that is equally small sized and characterized by strong emotional ties among its members, but in which the conditions of what I shall call ‘goal-monism’ and discontinuity in time do not hold, namely, the family. (shrink)

Rawls argues that ‘Parties in the original position would wish to avoid at almost any cost the social conditions that undermine self-respect’. But what are these social conditions that we should so urgently avoid? One evident candidate might be conditions of material inequality. Yet Rawls seems confident that his account of justice can endorse such inequalities without jeopardising citizens’ self-respect. In this article I argue that this confidence is misplaced. Unequalising incentives, I claim, jeopardise the self-respect of those least advantaged—at (...) least under a Rawlsian schema—by undermining the very processes by which Rawls hopes to make distributional inequalities and self-respect compatible. I begin by setting out Rawls’s distinct account of self-respect before moving to describe how Rawls expects the difference principle to support citizens’ in this regard. I then draw upon GA Cohen’s distinction between ‘strict’ and ‘lax’ interpretations of the difference principle to argue that the presence of unequalising incentives undermines both the direct and indirect support that the difference principle can offer to citizens’ self-respect. As such, I claim that Rawls must either weaken his endorsement of unequalising incentives, or risk violating his ‘prior commitment’ to avoiding social conditions harmful to citizens’ self-respect. (shrink)

G.A. Cohen argues that Rawlsian constructivism mistakenly conflates principles of justice with optimal rules of regulation, a confusion that arises out of how Rawls has us think about justice. I use the concepts/conceptions distinction to argue that while citizens may reasonably disagree about the substance and demands of justice, some principled convergence may be possible: we can agree upon regulative principles consistent with justice, as each of us understands it. Rawlian constructivism helps us find that principled convergence, and this (...) too is a conception of justice. (shrink)

According to the trilemma claim, we cannot have all three of equality, Pareto, and freedom of occupational choice. In response to the trilemma, John Rawls famously sacrificed equality by introducing incentives. In contrast, GA Cohen and others argued that we can, in fact, have all three provided that individuals are properly motivated by an egalitarian ethos. The incentives debate, then, concerns the plausibility of the ethos solution versus the plausibility of the incentives solution. Considerable ink has been spilled on (...) both sides of the debate. Yet, in this essay, I argue that we cannot have this debate until we clarify the terms. Once we clarify the terms, however, we might discover that there is no debate to be had. This is because, depending on how equality, Pareto, and freedom of occupational choice are interpreted, there might not be a trilemma in the first place. Specifically, I use a small but crucial distinction in how equality, the egalitarian ethos, and Pareto are assessed – what I call the internal/external distinction – to disentangle the various paths each solution – the ethos or incentives – could take. I conclude that both solutions have gained illicit plausibility by virtue of not keeping the distinction straight. (shrink)

This paper considers the ethics of placebo‐controlled trials in developing countries, where a treatment already exists but is not available due to the low local standard of care. Such trials would not be permitted in more developed nations where a higher standard of care is available. I argue that there are moral intuitions against such trials, but a further intuition that if the trials were aimed at producing treatment options for the developing world, that would be more permissible than if (...) the trials were designed with the benefit of rich world people in mind. An approach based upon GA Cohen's work on interpersonal justifiability is suggested to allow us to explain these intuitions. Cohen's framework shows that these trials are ethically problematic because the inequality in healthcare provision between developing and developed nations that allows them to take place is at least partly the pharmaceutical corporations’ fault. Following Cohen's argument, this means the trials are non‐comprehensively justified. This allows for a more complete explanation of our intuitions than to consider such trials as cases of exploitation, because intuitions on the ethicacy of research can vary even when the exploitation relation remains the same. It is then established that there is good empirical evidence to believe that pharmaceutical corporations do fail the interpersonal justifiability test. The policy implications of this judgement are then considered, and it is suggested that the framework might be equally applicable to examining the permissibility of research conducted on vulnerable people within more developed nations. (shrink)

The late Jerry Cohen struggled to reconcile his egalitarian political principles with his personal style of life. His efforts were inconclusive, but instructive. This comment locates the core of Cohen’s discomfort in an abstract principle that connects what we morally ought to be compelled to do and what we have a duty to do anyway. The connection the principle states is more general and much tighter than Cohen and others, e.g. Thomas Nagel, have seen. Our principles of (...) justice always put our personal integrity to the test, unless those principles are designed not to. But to craft principles with an view to avoiding that test is, as Cohen argued, itself to undermine both justice and our integrity. (shrink)

This article reconstructs and reflects on the 1989 debate between Jerry Cohen and myself on market socialism in the light of Cohen's ongoing defence of communitarian socialism. It presents Cohen's view of market socialism as ethically deficient but a modest improvement on capitalism, and outlines some market socialist proposals from the 1980s. Our debate centred on the issues of distributive justice and community. I had argued that a market economy might be justified by appeal to desert based (...) on productive contribution, but Cohen saw effort as the only relevant desert base, and claimed that only non-comparative judgements of economic desert were possible. Market-derived inequalities, therefore, could not be deserved. He also condemned markets for relying on the motives of greed and fear, and therefore as destructive of community. In reply, I asserted that markets also liberated people from fixed social roles, and that market competition could be viewed differently, as providing the most effective way for people to contribute to each other's welfare. In retrospect, this debate can be seen to raise questions about the nature of justice and the purpose of political philosophy that have come to the fore in recent exchanges between ‘realists’ and ‘idealists’. (shrink)

What does it mean to say that the demands of justice are institutional rather than individual? Justice is often thought to be directly concerned only with governmental institutions rather than individuals’ everyday, legally permissible actions. This approach has been criticized for ignoring the relevance to justice of informal social norms. This paper defends the idea that justice is distinctively institutional but rejects the primacy of governmental institutions. I argue that the ‘pervasive structure of society’ is the site of justice and (...) injustice. It includes all widely enforced social rules and norms, governmental and otherwise, such as informal norms of gender, language and class, and provides a revisionary foundation for the theoretical elucidation and practical pursuit of justice. It provides a framework for evaluating the ways in which people can and should promote justice in their everyday lives. (shrink)

This book presents G. A. Cohen's Gifford Lectures, delivered at the University of Edinburgh in 1996. Focusing on Marxism and Rawlsian liberalism, Cohen draws a connection between these thought systems and the choices that shape a person's life. In the case of Marxism, the relevant life is his own: a communist upbringing in the 1940s in Montreal, which induced a belief in a strongly socialist egalitarian doctrine. The narrative of Cohen's reckoning with that inheritance develops through a (...) series of sophisticated engagements with the central questions of social and political philosophy. In the case of Rawlsian doctrine, Cohen looks to people's lives in general. He argues that egalitarian justice is not only, as Rawlsian liberalism teaches, a matter of rules that define the structure of society, but also a matter of personal attitude and choice. Personal attitude and choice are, moreover, the stuff of which social structure itself is made. Those truths have not informed political philosophy as much as they should, and Cohen's focus on them brings political philosophy closer to moral philosophy, and to the Judeo-Christian ethical tradition, than it has recently been. (shrink)

In a study published in late April in Nature Communications, the authors were able to sustain 105- to 115-day-old premature lamb fetuses—whose level of development was comparable to that of a twenty-three-week-old human fetus—for four weeks in an artificial womb, enabling the lambs to develop in a way that paralleled age-matched controls. The oldest lamb of the set, more than a year old at the time the paper came out, appeared completely normal. This kind of research brings us one step (...) closer to providing excellent quality of life for premature newborns, but it also portends major legal and ethical questions, especially for abortion rights in America. (shrink)

I take a close look at Bernard Williams’s paper "Moral Luck," which put this notion on the philosophical agenda. Williams’s focal example is the painter Paul Gauguin. According to Williams, Gauguin’s morally dubious decision to desert his family so as to pursue an artistic career can be redeemed only by his partially fortuitous success as a painter. This is shown by the consideration that a successful Gauguin would not be able to regret his decision, whereas failure would have prompted regret. (...) I suggest that the best way to understand this claim is to see Gauguin’s decision to become an artist as a constitutive decision, which launches what for him proved to be a defining project. One cannot coherently regret the realization of such a project or the decision that gave rise to it because that would amount to wishing to be someone else: conditions of personal identity set the limits on the counterfactuals about ourselves that we can intelligibly entertain. However, not being able to regret the constitutive elements of one’s life is not the same as approving of these elements. So I disagree with Williams’s ultimate conclusion that the inability to regret a decision signals some justification for it, no matter how attenuated. (shrink)

Joseph Heath defends competitive markets and conceptualizes business ethics with reference to Pareto efficiency, which he takes to be the “implicit morality of the market.” His justification for markets is that they generate Pareto efficient outcomes, meaning that markets optimally satisfy consumer preferences. And, for Heath, business ethics is the set of normative constraints—regulation and beyond-compliance norms—needed to preserve that outcome. The present paper accepts Heath’s claim that the economic justification for markets is ethical, in that satisfying consumer preferences is (...) a good. But, contra Heath, the ethical consideration at work is a consequentialist one; and acknowledging this consequentialism exposes limitations of Heath’s “market failures” approach to business ethics. We suggest two limitations, and we expect many will accept our argument that Heath’s conception of business ethics is too narrow. The present paper outlines two broader implications. First, acknowledging that the justification for markets is ethical eliminates the apparent—and false—conflict between purportedly amoral economic activity on one hand and ethical considerations on the other; instead, business ethics is a matter of weighing the consequentialist ethical benefit of economic activity and markets against other moral arguments/other ethical considerations. Second, Heath restricts business ethics to the constraints needed to protect the market’s ability to efficiently satisfy consumer preferences, constraints he calls “efficiency imperatives”; this restriction supports the widespread tendency to think that all social problems are economic; and, a business ethics so-conceived diminishes the perceived importance of noneconomic values—this attitude is dangerous. (shrink)

Virtue argumentation theory provides the best framework for accommodating the notion of an argument that is “fully satisfying” in a robust and integrated sense. The process of explicating the notion of fully satisfying arguments requires expanding the concept of arguers to include all of an argument’s participants, including judges, juries, and interested spectators. And that, in turn, requires expanding the concept of an argument itself to include its entire context.

Assuming the existence of God and divine commands, it makes sense to ask to what end God issues commands. This question has been raised in recent philosophical literature in the context of whether there can be a divine command to believe in, or to worship, God. In this article, I argue that the answers proposed to this question fail to appreciate the wide range of possible purposes of divine commanding. In particular, I argue that commands that cannot be conformed or (...) complied with may still have purpose. (shrink)

En What Emotions Really Are y en otros artículos, Griffiths afirma que las clases naturales de los organismos vivos en Biología son cladistas. La afirmación está inmersa en una nueva teoría acerca de las clases naturales. En este trabajo examinaré los argumentos esgrimidos por Griffiths para sostener el estatus privilegiado de las clasificaciones cladistas frente a otras clasificaciones. No se discutirá la teoría de las clases naturales ofrecida, de cuyos méritos no dudo, sino su capacidad para ofrecer una solución en (...) la cuestión particular de qué sistema de clasificación de organismos debería utilizarse en Biología. In What emotions really are and in other papers Griffiths states that in Biology, natural classes ofliving organisms are clades. This assertion is made within the bounds of a new theory of natural classes. In this paper I wiIl consider the arguments employed by Griffiths to support the privileged status of the cladistic classification over other classifications. It is not Griffith's theory of natural classes what will be discussed, but his ability to offer a solution to the particular issue ofwhich classification system of organisms should be used in Biology. (shrink)

The problem of theorizing privacy moves on two levels, the first consisting of an inadequate conceptual vocabulary and the second consisting of an inadequate institutional grammar. Privacy rights are supposed to protect individual subjects, and so conventional ways of understanding privacy are subject-centered, but subject-centered approaches to theorizing privacy also wrestle with deeply embedded contradictions. And privacy’s most enduring institutional failure modes flow from its insistence on placing the individual and individualized control at the center. Strategies for rescuing privacy from (...) irrelevance involve inverting both established ways of talking about privacy rights and established conventions for designing institutions to protect them. In terms of theory, turning privacy inside out entails focusing on the conditions that are needed to produce sufficiently private and privacy-valuing subjects. Institutionally, turning privacy inside out entails focusing on the design, production, and operational practices most likely to instantiate and preserve those conditions. (shrink)

This paper argues that Rawls’ principles of justice provide a normative foundation for stakeholder theory. The principles articulate (at an abstract level) citizens’ rights; these rights create interests across all aspects of society, including in the space of economic activity; and therefore, stakeholders – as citizens – have legitimate interests in the space of economic activity. This approach to stakeholder theory suggests a political interpretation of Boatright’s Moral Market approach, one that emphasizes the rights/place of citizens. And this approach to (...) stakeholder theory – in terms of citizens – raises a further question, what rights and obligations do economic agents have, beyond those attached to their roles as citizens? Rawls would reject additional rights and obligations of this sort for two reasons, one tied to freedom and one tied to pluralism. Rawls’ work therefore presses us to re-conceptualize the place of ethical claims in the economic context. (shrink)

While deductive validity provides the limiting upper bound for evaluating the strength and quality of inferences, by itself it is an inadequate tool for evaluating arguments, arguing, and argumentation. Similar remarks can be made about rhetorical success and dialectical closure. Then what would count as ideal argumentation? In this paper we introduce the concept of cognitive compathy to point in the direction of one way to answer that question. It is a feature of our argumentation rather than my argument or (...) your argument. In that respect, compathy is like the harmonies achieved by an accomplished choir, the spontaneous coordination of athletic teamwork, or the experience of improvising jazz musicians when they are all in the flow together. It is a characteristic of arguments, not a virtue that can be attributed to individual arguers. It makes argumentation more than just the sum of its individual parts. The concept of cognitive compathy is brought into focus by locating it at the confluence of two lines of thought. First, we work up to the concept of compathy by contrasting it with empathy and sympathy in the context of emotions, which is then transplanted into epistemic, cognitive, and argumentative soil. Second, the concept is analytically linked to ideal argumentation by way of authenticity in communication. In the final section, we explore the extent to which argumentative virtues are conducive to producing compathetic argumentation, but reach the unhappy conclusion that the extra value of compathetic argumentation also transcends the evaluative reach of virtue argumentation theory. (shrink)

In this paper I discuss the nature of halakhic facts and I frame the discussion in a broader meta-ethical context. Most of the existing literature on the philosophy of halakha has focused on the contrast between ‘Halakhic Realism’ and ‘Halakhic Nominalism’. This theoretical contrast is vague and includes a wide range of theories. Inspired by the meta-ethical literature, I propose to focus the discussion on views that can be called ‘Halakhic Naturalism’ and ‘Halakhic Non-naturalism’. I present, develop and distinguish between (...) different meanings of 'naturalism' and consider arguments for and against 'Halakhic Naturalism'. The purpose of this paper is twofold: First, to present and demonstrate the fruitful encounter between meta-ethics and the philosophy of halakha. Second, to present, evaluate and promote the substantive discussion of naturalistic and non-naturalistic views. (shrink)

In Memory of Ed PellegrinoEuthanasia in Belgium is not limited to terminally ill patients. It may be applied to patients with chronic degenerative diseases. Currently, people in Belgium wish to make it possible to euthanize incompetent patients who suffer from dementia. This article explains the Belgian law and then explores arguments for and against euthanasia of patients with dementia. It probes the dementia paradox by elucidating Dworkin’s distinction between critical and experiential interests, arguing that at the end-of-life this distinction is (...) not clearcut. It argues against euthanasia for patients with dementia, for respecting patients’ humanity and for providing them with more care, compassion, and good doctoring. (shrink)

A central debate in the ethics of deception concerns the moral comparison among the three media through which deception is executed: lying, falsely implicating, or nonlinguistic deception. The two prominent views are that lying is morally worse or that the choice of medium is morally insignificant. This article refutes both and argues for a new position. The article first presents a theory on the moral significance of the medium of deception as such: it argues that the medium of communication affects (...) the reliability of beliefs formed through it, which amounts to gradations in the warrant of truth of different media. Breach of lower warrant of truth is a lesser breach of trust; it therefore deserves lighter condemnation. Consequently, the article shows that, morally speaking, lying is either worse than or equal to falsely implicating and that there is no a priori gradation between nonlinguistic deception and the two linguistic media. (shrink)

Full-length studies of individual books of Nietzsche have been lacking until now both because of the immaturity of the field and because Nietzsche's style itself seems to contraindicate them. Close reading, however, reveals a great deal of literary and philosophical unity. This holds good even of Human, All-Too-Human, Nietzsche's longest and most unwieldy work. The book represents Nietzsche's break with Schopenhauer and Wagner, as well as the birth of Nietzsche as we know him in the later works. The book's embrace (...) of science as conducive to culture follows the early works' vilification of science as anathema to culture. This reassessment is possible because science is now seen as a method and a discipline rather than an insatiable drive for knowledge, and culture is now a broad set of symbols and activities rather than a narrowly focussed "unity of artistic style." Both changes were motivated by Nietzsche's rejection of Wagner. Part of the help science provides culture is its release from restrictive metaphysical beliefs. Nietzsche battles metaphysics, principally that of Schopenhauer, by means of scientific arguments meant both to provide alternative explanations of phenomena and to expose the origin of countervailing metaphysical beliefs. However, even when combined in a two-pronged attack, these arguments still fall short of their goal of refuting metaphysics. The scientific world-view may nonetheless aid the development of "free spirits," whose unalloyed devotion to knowledge makes them science's paragons. The free spirits are the prototypes for the later works' strong individuals, yet here they are viewed as crucial elements in the cultural development of general society. Nietzsche seeks both to create them and to encourage their devotion to the needs of culture. Part of his effort to do this is the deployment of a terse, elliptical style which will involve the reader more thoroughly than can be done by means of argument alone. Study of the book's structure reveals that its core, Parts 1, 5, and 9, outlines the relation between science, culture, and free spirits. (shrink)

The theme of Aesthetics in Present Future concerns the new chances the arts have and the deep changes they are undergoing, due to the new media, and the digital world in which we are growingly immersed. That this world is to be understood from an aesthetic point of view, become clear if we think of how much of what we produce, and observe and study is offered through images in particular and perceptual means in general.