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

This chapter contains section titled: The Scope of Ecology General Description of Ecosystems History of the Term “Ecosystem” Ecosystems as Symbiotic Units Ecosystems as Dissipative Structures Ecosystems and Evolutionary Biology Skeptical Critiques of Ecosystem Theory Ecosystem Integrity and Health Sustainability from an Ecosystems Point of View Acknowledgments References Further Reading.

This paper is a report on the viability, both technical and ethical, of negative emissions technologies (NETs) in climate change mitigation. Given present levels of atmospheric carbon dioxide, NETs are almost certainly required in order to avoid the most serious consequences of anthropogenic carbonization. Critics argue that we should not rely on the promise of future NETs because that could be taken as an excuse to avoid decarbonization in the near term. The concern is genuine, but if the prima facie (...) arguments for drawing down carbon as soon as possible are correct, ways must be found to counter the incentives to defer the immediate deployment of NETs and other forms of mitigation. A policy instrument is sketched which could help accomplish that task. (shrink)

This is a review of those key thought experiments in physics from the late 19th century onward that seem to have played a particular role in the process of the discovery or advancement of theory. Among others the paper discusses Maxwell's demon, several of Einstein's thought experiments in relativity, Heisenberg's microscope, the Einstein-Schrödinger cat, and the EPR thought experiment.

I present a thought experiment in quantum mechanics and tease out some of its implications for the doctrine of “peaceful coexistence”, which, following Shimony, I take to be the proposition that quantum mechanics does not force us to revise or abandon the relativistic picture of causality. I criticize the standard arguments in favour of peaceful coexistence on the grounds that they are question-begging, and suggest that the breakdown of Lorentz-invariant relativity as a principle theory would be a natural development, given (...) the general trend of physics in this century. (shrink)

It is generally believed that an invariant notion of a global present or "Now" cannot be defined in special relativity, because of the relativity of optical simultaneity. I argue that this may be a non sequitur since it is not necessarily the case that the psychological "Now" should be thought of as associated with constant time slices in spacetime. By considering a science fictional version of the Twin Paradox due to Robert A. Heinlein, I argue that it is psychologically plausible (...) to associate the common specious present of several observers in relative motion with certain hypersurfaces of proper time of those observers corrected for acceleration history and relative motion in an obvious way. If this is correct then the relativity of optical simultaneity may be simply irrelevant to the question of the relativity of a globally distinguished "present". (shrink)

The twilight of certainty -- Einstein and light -- The Bohr atom and old quantum theory -- Uncertain synthesis -- Dualities -- Elements of physical reality -- Creation and annihilation -- Quantum mechanics goes to work -- Symmetries and resonances -- "The most profound discovery of science" -- Bits, qubits, and the ultimate computer -- Unfinished. business.

This paper argues that fitness is most usefully understood as those properties of organisms that are explanatory of survival in the broadest sense, not merely descriptive of reproductive success. Borrowing from Rosenberg and Bouchard , fitness in this sense is ecological in that it is defined by the interactions between organisms and environments. There are three sorts of ecological fitness: the well-documented ability to compete, the ability to cooperate , and a third sense of fitness that has received insufficient attention (...) in evolutionary theory, the ability to construct. Following Lotka, it can be understood thermodynamically as the ability to maintain or enlarge the energy-circulating capacity of an ecosystem. An organism that does this could end with its gene frequency unchanged but its probability of survival enhanced since it would sustain or increase the total carrying capacity of its ecosystem. Photosynthesizers and other autotrophs are obvious candidates for organisms that are fit in the constructive sense, but any organisms, including heterotrophs, can exhibit constructive fitness if they have some mechanism for channeling external flows of free energy into their ecosystems. I will briefly examine the prospects for the human species in the light of these considerations. (shrink)

James Hansen and others have argued that climate scientists are often reluctant to speak out about extreme outcomes of anthropogenic carbonization. According to Hansen, such reticence lessens the chance of effective responses to these threats. With the collapse of the West Antarctic Ice Sheet as a case study, reasons for scientific reticence are reviewed. The challenges faced by scientists in finding the right balance between reticence and speaking out are both ethical and methodological. Scientists need a framework within which to (...) find this balance. Such a framework can be found in the long-established practices of professional ethics. (shrink)

ABSTRACTJames Hansen and others have argued that climate scientists are often reluctant to speak out about extreme outcomes of anthropogenic carbonization. According to Hansen, such reticence lessens the chance of effective responses to these threats. With the collapse of the West Antarctic Ice Sheet as a case study, reasons for scientific reticence are reviewed. The challenges faced by scientists in finding the right balance between reticence and speaking out are both ethical and methodological. Scientists need a framework within which to (...) find this balance. Such a framework can be found in the long-established practices of professional ethics. (shrink)

It seems to me that it is among the most sure-footed of quantum physicists, those who have it in their bones, that one finds the greatest impatience with the idea that the ‘foundations of quantum mechanics’ might need some attention. Knowing what is right by instinct, they can become a little impatient with nitpicking distinctions between theorems and assumptions. —John Stewart Bell [4, p. 33].

(2002). Bub and the barriers to quantum ontology. International Studies in the Philosophy of Science: Vol. 16, No. 3, pp. 285-289. doi: 10.1080/0269859022000013346.

The essays evaluate Woods' work and celebrate the generous contribution that he has made to Canada?s intellectual development over the past forty years.

Sherlock Holmes is reputed to have once remarked impatiently to his earnest but plodding colleague Watson, “How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?” In Quantum Non-Locality and Relativity, Tim Maudlin offers us a thorough and provocative argument based on this methodological principle. Maudlin insists that all explanations of the mysterious non-local correlations of quantum mechanics must by now be rejected except one: distant events in quantum (...) systems really are “causally implicated” in a way that directly challenges the theory of relativity. Physicists and philosophers of science have made virtually every conceivable move to avoid this unsettling conclusion, including tinkering with the basic formalism or interpretation of the theory, and Arthur Fine’s oddly postmodernist recommendation that we should abandon as outmoded “essentialism” all hope of explaining the correlations. However, the threat to relativity just won’t go away. Maudlin argues that we should have paid better attention in the first place to J. S. Bell, who “concluded that violations of [his] inequality demonstrate that the world is not locally causal.... Instead of trying to deny these non-local influences, we should begin to study the role such influences must play in generating the phenomena”. (shrink)

Sherlock Holmes is reputed to have once remarked impatiently to his earnest but plodding colleague Watson, “How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?” In Quantum Non-Locality and Relativity, Tim Maudlin offers us a thorough and provocative argument based on this methodological principle. Maudlin insists that all explanations of the mysterious non-local correlations of quantum mechanics must by now be rejected except one: distant events in quantum (...) systems really are “causally implicated” in a way that directly challenges the theory of relativity. Physicists and philosophers of science have made virtually every conceivable move to avoid this unsettling conclusion, including tinkering with the basic formalism or interpretation of the theory, and Arthur Fine’s oddly postmodernist recommendation that we should abandon as outmoded “essentialism” all hope of explaining the correlations. However, the threat to relativity just won’t go away. Maudlin argues that we should have paid better attention in the first place to J. S. Bell, who “concluded that violations of [his] inequality demonstrate that the world is not locally causal.... Instead of trying to deny these non-local influences, we should begin to study the role such influences must play in generating the phenomena”. (shrink)

Suppose you woke up one morning having utterly forgotten what year it was, or, indeed, what century and what millennium it was, but with all your cognitive faculties otherwise intact. In particular, you remember that human population increases monotonically with time, implying that, in later years, there are far more positions you could be occupying in the whole set of all persons who have ever lived or will live. Then, John Leslie tells us, you will apply your knowledge of probability (...) theory in a certain way and conclude that, whatever year you may be in, it is probable that it is uncomfortably close to the point at which the human species meets its quietus. You think, “My God, I’ve overslept and missed most of history.”. (shrink)

The most pressing problems facing humanity today - over-population, energy shortages, climate change, soil erosion, species extinctions, the risk of epidemic disease, the threat of warfare that could destroy all the hard-won gains of civilization, and even the recent fibrillations of the stock market - are all ecological or have a large ecological component. in this volume philosophers turn their attention to understanding the science of ecology and its huge implications for the human project. To get the application of ecology (...) to policy or other practical concerns right, humanity needs a clear and disinterested philosophical understanding of ecology which can help identify the practical lessons of science. Conversely, the urgent practical demands humanity faces today cannot help but direct scientific and philosophical investigation toward the basis of those ecological challenges that threaten human survival. This book will help to fuel the timely renaissance of interest in philosophy of ecology that is now occurring in the philosophical profession. Provides a bridge between philosophy and current scientific findings Covers theory and applications Encourages multi-disciplinary dialogue. (shrink)

The purpose of this paper is to pick up the threads of a debate about the ontology of becoming in spacetime that was triggered by a provocative article published by Nicholas Maxwell in 1985. This debate is itself merely a recent episode in a long dialogue that goes back at least as far as the time of Parmenides and Heraclitus. Here is the question around which this debate centres: is change or becoming the distinguishing feature of the natural or physical (...) world, as suggested obscurely by Heraclitus and argued at length by Aristotle? Or is our usual uncritical belief in the reality of change the product of some sort of perceptual illusion or intellectual error, as believed by Parmenides and a small host of recent authors such as Gödel and Julian Barbour? I won’t be able to solve the whole of this momentous problem here. However, I intend both to set aside a few unwarranted assumptions which have for a long time dogged our thinking about the puzzle of becoming, and to assemble some tools which should aid in finding a solution to it. In particular, I will argue that we can do much better than is usually supposed in identifying structures which can both “live” within Minkowski spacetime and represent objective becoming. I shall also discuss whether such structures would necessarily contradict the Principle. (shrink)

In Books V – VII of the Republic we are presented with a picture of knowledge as something entirely distinct from right opinion, and we have described to us a method called dialectic by means of which a suitably endowed person may attain to this knowledge. By knowledge, Plato means knowledge of the forms, although it is far from clear what this really means. And it is also not clear exactly what he means by dialectic, or how it is that (...) dialectic leads to this special sort of knowledge. The key passage, 511b – d, is surely one of the most cryptic passages in philosophical literature, maddening in its suggestiveness. In my talk today I want to risk presenting an interpretation of what Plato might have meant by all of this, and also briefly allude to its broader significance. My key points are these: Dialectic is not just the art of friendly conversation , but a dialogue carried out in a particular way, with a particular end in mind. Plato seemed to want to believe that knowledge of the Forms would allow certain, or necessary analogical reasoning, even though he was uneasy about the obvious impracticability of such a scheme. Problems to be encountered in Plato’s theory of knowledge are indicative of the unresolved tension between the mystical and the rational which existed in Greek thought at this time. Now, the obvious question which strikes the beginner, when he first hears of this notion of dialectic, is, how can mere conversation or debate lead to certain knowledge of the transcendental patterns after which the world is fashioned? It would be very unusual, to say the least, to expect such a remarkable conclusion to any familiar sort of dialectic, such as might, for instance, occur in this seminar room. In fact, it is rare that a philosophical debate (as opposed to a monologue!) comes to any sort of conclusion at all. For instance, we have before us as models.. (shrink)

It continues to be alleged that superluminal in uences of any sort would be inconsistent with special relativity for the following three reasons: they would imply the existence of a ‘distinguished’ frame; they would allow the detection of absolute motion; and they would violate the relativity of simultaneity. This paper shows that the first two objections rest upon very elementary misunderstandings of Minkowski geometry and on lingering Newtonian intuitions about instantaneity. The third objection has a basis, but rather than invalidating (...) the notion of faster-than-light influences it points the way to more general conceptions of simultaneity that could allow for quantum nonlocality in a natural way. (shrink)

There are a lot of expressions of pessimism these days about whether we can save the environment — and thereby ourselves. Some of this pessimism is self-serving, but most of it is quite genuine. People look at the trends, and they despair — or else go into denial. And those who despair will almost invariably point to one factor above all others — the threat of overpopulation. No matter whether we recycle all our waste, switch entirely to non-polluting energy sources, (...) sponge the skies of CFCs and greenhouse emissions, turn the deserts into gardens, and save the rainforests and the poor whales, all these gains will be washed away, these people say, by a surging tide of hungry hominids. My topic today, therefore, is the population boom. I want to consider the following question: is it inevitable that humanity must overwhelm itself in hungry babies? And I shall argue that the answer is a firm no — that while it is possible, and maybe even probable, that this catastrophe will happen, it is not inevitable. First, let’s take a clear-eyed look at some worrisome numbers, so that no one can say we are ignoring the facts. The world population clock has recently clicked over the six billion mark. I myself remember when it passed three billion. That was back around the time when the Beatles were driving teenie-boppers into hysterics; not all that long ago, really. We are currently adding nearly 90 million new hungry mouths every year, roughly three Canadas. Try to imagine the consequences if 90 million immigrants showed up at our borders in one year. In fact, the rate of increase has slowed down a little bit since the sixties and early seventies. Demographic experts are desperately trying to project on the basis of current trends, but the best they can do is to guess that world population will level out around ten billions or so, roughly around 2050. Will we all breathe a sigh of relief at that point, convinced that we have dodged the bullet? The problem is, of course, that it is not clear that we can continue, much longer, to provide even for the present world population, let alone a few billions more, given our current, highly wasteful methods of land use and resource extraction.. (shrink)

I explore the application of the “no-go” theorems of quantum mechanics to the problem of the openness of the future. The notion of fatalism can be made precise if we think of it as a claim that the future has a Boolean property structure. However, if this is correct, then it may be the case that by the “no-go” theorems of quantum mechanics the future must be at least partially open in the precise sense that there cannot be a fact (...) of the matter at a given time about some events at later times. (shrink)

Is the human species itself the ultimate Untenable Absurdity? This paper will be a serious (for which I apologize) but rambling philosophical reflection on the grim prospects for our species in the face of peak oil, climate change, warfare, overpopulation, and other looming ecological catastrophes.

Not too many metaphysicians in these hypercritical times would dream of offering a theory of everything, but Storrs McCall, who modestly compares his new book to The Origin of Species, claims that his theory may accomplish nothing less than to "illuminate, perhaps even resolve" problems such as "the direction and flow of time; what causation consists of; the nature of scientific laws; the interpretation of quantum mechanics; objective probability; counterfactuals and related conditionals; the identity of individuals across possible worlds; essential (...) properties... practical reason and decision, and the problem of free will". His attempt is breathtaking in its thoroughness and ingenuity. (shrink)

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

Against a background of increasing regulation regarding access to medical information and the presentation of patients' confidentiality, the case of genetic information raises interesting questions about whether the application of general rules is appropriate in all situations. Whilst all genetic information is not equally sensitive, some of it is highly predictive. It also allows deductions to be made about other family members. It may not be regarded as particularly sensitive when compared to other types of medical information and those to (...) whom it applies may not be as anxious about preserving their confidentiality as compared with—for example, the prospect of seeing research into cause and cures for rare diseases put in hand. These distinctions also find resonance with the general public. Resolving conflicting tensions will require subtlety, not a blunt “one size fits all” model. (shrink)

Leadership studies on corporate ethical behavior and practices have grown considerably, contributing significant knowledge on ethical leadership challenges that are organizational and industry focused. However, complex socio-ecological systems are placing pressure on organizational culture and old patterns of leadership behavior that play a role in organizational justice. In this study, we argue that scholars of business ethics must consider the role of organizational justice and use person-organization fit (P–O fit). To address this, our study investigates the mediating effect of organizational (...) justice on the relationship between ethical leadership and employees’ ethical behavior. We also examine the moderating role of P–O fit on the relationship between organizational justice and employee’s ethical behavior. The study survey focused on 295 employees belonging to organizations in Iraq. We show that ethical leadership positively influences employees’ ethical behavior, and this relationship is shaped by organizational justice. The findings reflect the positive impact of organizational justice on ethical behavior, and this relationship is more pronounced in employees with high rather than low P–O fit. This study clarifies the importance of employee’s P–O fit and its impact on organizational processes for creating a positive impact on ethical behavior in the workplace. We also share practical implications of the study and recommend systemic research that explores this area. (shrink)