Within many animal taxa there is a trend for the species of larger body size to eat food of lower caloric value. For example, most large extant lizards are herbivorous. Reasonable arguments based on energetic considerations are often invoked to explain this trend, yet, while these factors set limits to feasible body size, they do not in themselves mathematically produce optimum body sizes. A simple optimization model is developed here which considers food search, capture, and eating rates and the metabolic (...) cost of these activities for animals of different sizes. The optimization criterion is defined as the net caloric gain a consumer accrues per day. This model does produce an optimum intermediate body size which increases with food quality - not the reverse. This discrepancy is accounted for, however, because the model also predicts that body size should be even more sensitive to increases in food abundance. In nature, many poor quality foods are also relatively abundant foods, hence the consumers eating them may maximize their daily energetic profit by evolving a relatively large body size. Optimum consumer body size also decreases with increases in consumer metabolic rate and prey speed. (shrink)

The traditional objection to Mill's principle governing the interference of state and society in the lives of individuals is that it excludes interference only in the case of actions that harm nobody at all. Interpretations of Mill's essay which escape this objection have been suggested by J. C. Rees and Richard Wollheim. In one case Mill is said to have been concerned with harm to established interests, in the other with harm which arises by way of the beliefs (...) of those injured. The author of the present article proposes an alternative interpretation which better represents Mill's intention and escapes objections which may be raised against the principles expounded by Rees and Wollheim. Once again, however, Mill's principle emerges as seriously flawed. (shrink)

Until recently, the medical community assumed that placebos required either concealment in randomized controlled trials or deception in clinical practice to elicit placebo effects. Henry Beecher emphasized this orthodoxy, when he stated that placebo pills only work "as long as it is not detected as a placebo by the subject or the observer" and therefore, patients "believe it [is a drug] and consequently the expected results occurs". The time was ripe for such ideas: Norman Vincent Peale's The Power of Positive (...) Thinking was already in its fourth year on the bestseller list when Beecher published his landmark paper. As time went on, the use of placebo pills became trapped in an... (shrink)

The principle of informed consent obligates physicians to explain possible side effects when prescribing medications. This disclosure may itself induce adverse effects through expectancy mechanisms known as nocebo effects, contradicting the principle of nonmaleficence. Rigorous research suggests that providing patients with a detailed enumeration of every possible adverse event?especially subjective self-appraised symptoms?can actually increase side effects. Describing one version of what might happen may actually create outcomes that are different from what would have happened without this information. This essay argues (...) that the perceived tension between balancing informed consent with nonmaleficence might be resolved by recognizing that adverse effects have no clear black or white?truth.? This essay suggests a pragmatic approach for providers to minimize nocebo responses while still maintaining patient autonomy through?contextualized informed consent,? which takes into account possible side effects, the patient being treated, and the particular diagnosis involved. (shrink)

Ted Honderich: Professor Ayer, you wrote Language, Truth and Logic when you were only twenty-four, in 1935, and achieved fame by way of it. Tell us a bit about the writing. A. J. Ayer: After I'd taken my Schools at Oxford—I read Greats—my tutor Gilbert Ryle suggested that I go away for a couple of terms. I had already been appointed Lecturer at Christ Church, and I wanted to go to Cambridge to study under Wittgenstein, but Gilbert said no, don't (...) do that. We've got a lot of people going to Cambridge and we've a vague idea of what Wittgenstein is up to, but I believe something very interesting is happening in Vienna, under Moritz Schlick. Why don't you go to Vienna? I'd just got married for the first time, and I thought Vienna would be a nice place to go to for a honeymoon. At this point I didn't speak much German, but I thought I'd pick up some, which I did, and so I went and worked with the Vienna Circle. I couldn't really take much part in their debates, but I understood what was going on and came back very enthusiastic about what they were doing. They were extremely empiricist, very anti-metaphysical, anti-religious, and this suited my cast of mind very much. I immediately started lecturing at Oxford on—I think it was Russell, Wittgenstein and Quine. Russell was at that time almost a forbidden subject at Oxford, and Wittgenstein and Quine were people who'd not been heard of. (shrink)

The doctor-patient relationship is built on an implicit covenant of trust, yet it was not until the post-World War Two era that respect for patient autonomy emerged as an article of mainstream medical ethics. Unlike their medical forebears, physicians today are expected to furnish patients with adequate information about diagnoses, prognoses and treatments. Against these dicta there has been ongoing debate over whether placebos pose a threat to patient autonomy. A key premise underlying medical ethics discussion is the notion that (...) the placebo effect necessitates patient deception. Indeed, the American Medical Association guidelines imply that placebo treatment necessary entails a form of deception. As a consequence of this assumption, the fulcrum of debate on the use of placebo treatment has hinged on whether that deception is ever justified. Recently performed experiments with open-label transparently prescribed placebos have begun to challenge the notion that deception is necessary in eliciting the placebo effect and such effects necessarily involve a binary distinction between autonomy and beneficence. In this article we focus on the content of disclosures in distinctive open-label, transparently disclosed placebo studies and inquire whether they might be said to invoke deception in clinical contexts, and if so, whether the deception is unethical. We find that open placebos may be said to involve equivocation over how placebos work. However, drawing on surveys of patient attitudes we suggest that this equivocation appears to be acceptable to patients. We conclude that open placebos fulfil current American Medical Association guidelines for placebo use, and propose future research directions for harnessing the placebo effect ethically. (shrink)

This book brings together eleven case studies of inductive risk-the chance that scientific inference is incorrect-that range over a wide variety of scientific contexts and fields. The chapters are designed to illustrate the pervasiveness of inductive risk, assist scientists and policymakers in responding to it, and productively move theoretical discussions of the topic forward.

Connectives and cue phrases are the most prototypical linguistic elements that signal coherence relations, but by limiting our attention to connectives, we are likely missing out on important other cues readers and listeners use when establishing coherence relations. However, defining the role of other types of linguistic elements in the signaling of coherence relations is not straightforward, and it is also not obvious why and how non-connective elements function as signals for coherence relations. In this paper, we aim to develop (...) a systematic way of categorizing segment-internal elements as signals of coherence relations on the basis of a literature review and evidence from parallel corpora. We propose a three-way distinction betweendivision of labor, agreement, andgeneral collocationto categorize the different ways in which elements inside discourse segments interact with connectives in the marking of coherence relations. In each type of interaction, segment-internal elements can function as signals for coherence relations, but the mechanism behind it is slightly different for each type. (shrink)

Evidence that placebo acupuncture is an effective treatment for chronic pain presents a puzzle: how do placebo needles appearing to patients to penetrate the body, but instead sitting on the skin’s surface in the manner of a tactile stimulus, evoke a healing response? Previous accounts of ritual touch healing in which patients often described enhanced touch sensations suggest an embodied healing mechanism. In this qualitative study, we asked a subset of patients in a singleblind randomized trial in irritable bowel syndrome (...) to describe their treatment experiences while undergoing placebo treament. Analysis focused on patients’ unprompted descriptions of any enhanced touch sensations and any significance patients assigned to the sensations. We found in 5/6 cases, patients associated sensations including “warmth” and “tingling” with treatment efficacy. The conclusion offers a “neurophenomenological” account of the placebo effect by considering dynamic effects of attentional filtering on early sensory cortices, possibly underlying the phenomenology of placebo acupuncture. (shrink)

The functional basis of disgust in disease avoidance is widely accepted; however, there is disagreement over what disgust is. This is a significant problem, as basic questions about disgust require...

We know facts, but we also know how to do things. To know a fact is to know that a proposition is true. But does knowing how to ride a bike amount to knowledge of propositions? This is a challenging question and one that deeply divides the contemporary landscape. A Critical Introduction to Knowledge-How introduces, outlines, and critically evaluates various contemporary debates surrounding the nature of knowledge-how. Carter and Poston show that situating the debate over the nature of knowledge-how in (...) other epistemological debates provides new ways to make progress. In particular, Carter and Poston explore the question of what knowledge-how involves, and how it might come apart from propositional knowledge, by engaging with key epistemological topics including epistemic luck, knowledge of language, epistemic value, virtue epistemology and social epistemology. New frontiers for research on knowledge-how are also explored relating to the internalism - externalism debate as well as embodied and extended knowledge. A Critical Introduction to Knowledge-How provides an accessible introduction to the main arguments in this important and thriving debate suited for undergraduates and postgraduates in philosophy and related areas. A strength of the book is its methodology which places a premium on placing the debates over knowledge-how in a broader conversation over the nature of knowledge. This book also offers an opinionated discussion of various lines of argument which will be of interest to professional philosophers as well. (shrink)

Originally published in 1948, at the height of post–World War II optimism and confidence in collective security, _Ideas Have Consequences_ uses “words hard as cannonballs” to present an unsparing diagnosis of the ills of the modern age. Widely read and debated at the time of its first publication,the book is now seen asone of the foundational texts of the modern conservative movement. In its pages, Richard M. Weaver argues that the decline of Western civilization resulted from the rising acceptance of (...) relativism over absolute reality. In spite of increased knowledge, this retreat from the realist intellectual tradition has weakened the Western capacity to reason, with catastrophic consequences for social order and individual rights. But Weaver also offers a realistic remedy. These difficulties are the product not of necessity, but of intelligent choice. And, today, as decades ago, the remedy lies in the renewed acceptance of absolute reality and the recognition that ideas—like actions—have consequences. This expanded edition of the classic work contains a foreword by _New Criterion _editor Roger Kimball that offers insight into the rich intellectual and historical contexts of Weaver and his work and an afterword by Ted J. Smith III that relates the remarkable story of the book’s writing and publication. (shrink)

We define our conscious experience by constructing narratives about ourselves and the people with whom we interact. Narrative pervades our lives--conscious experience is not merely linked to the number and variety of personal stories we construct with each other within a cultural frame, but is subsumed by them. The claim, however, that narrative constructions are essential to conscious experience is not useful or informative unless we can also begin to provide a distinct, organized, and empirically consistent explanation for narrative in (...) relation to consciousness. Understanding the role of narrative in determining individual and collective consciousness has been elusive from within traditional academic frameworks. This volume argues that addressing so broad and complex a problem requires an examination from outside our insular disciplinary framework. Such an open examination would be informed by the inquiries and approaches of multiple disciplines. Recognition of the different approaches to examining personal stories will allow for the coordination of how narrative seems, with what mental labor it does, and how it is realized. Only by overcoming the boundaries erected by multiple theoretical and discursive traditions can we begin to comprehend the nature and function of narrative in consciousness. Narrative and Consciousness brings together essays by exceptional scholars and scientists in the disciplines of literary theory, psychology, and neuroscience to examine how stories are constructed, how stories structure lived experience, and how stories are rooted in material reality. The specific topics addressed include narrative in the development of conscious awareness; autobiographical narrative, fiction and the construction of self; trauma and narrative disruptions; narrative, memory and identity; and the physiological and neural substrate of narrative. It is the editors' hope that the multidisciplinary nature of this collection will challenge the reader to move beyond disciplinary confines and toward a coherent interdisciplinary dialogue. (shrink)

Providing a concise definition of hope is challenging. Psychologists alone have proposed 26 theories of hope and 54 definitions thereof. The difficulty of finding a universal definition of hope was summed up by the philosopher Joseph Godfrey who admitted, "I'd rather have hope than be able to define it". Part of the problem is that the concept is the object of scrutiny across many different scholarly disciplines, each of which have their own, sometimes divergent, methodologies and interests in the concept. (...) Notwithstanding these idiosyncrasies, many of the respective disciplines, if not all, have the potential to improve the understanding of... (shrink)

The late J. L. Mackie and his work were a focus for much of the best philosophical thinking in the Oxford tradition. His moral thought centres on that most fundamental issue in moral philosophy – the issue of whether our moral judgements are in some way objective. The contributors to this volume, first published in 1985, are among the most distinguished figures in moral philosophy, and their essays in tribute to John Mackie present views at the forefront of the subject. (...) Five of the essays give a new understanding of the objectivity of moral judgements. These are by Simon Blackburn, R.M. Hare, John McDowell, Susan Hurley and Bernard Williams. The remaining contributors – Philippa Foot, Steven Lukes, Amartya Sen, David Wiggins – give their attention to problems which are equally compelling, such as the defence of a moral outlook based on a conception of a need and of what follows from it. The volume also includes the addresses given by Simon Blackburn and George Cawkwell at the memorial service for John Mackie, and a list of his publications, compiled by Joan Mackie. (shrink)

Abe and his friend Sol are out for a walk together in a part of town they haven't been in before. Passing a Christian church, they notice a curious sign in front that says "$1,000 to anyone who will convert." "I wonder what that's about," says Abe. "I think I'll go in and have a look. I'll be back in a minute; just wait for me." Sol sits on the sidewalk bench and waits patiently for nearly half an hour. Finally, (...) Abe reappears. "Well," asks Sol, "what are they up to? Who are they trying to convert? Why do they care? Did you get the $1,000?" Indignantly Abe replies, "Money. That's all you people care about." Ted Cohen thinks that's not a bad joke. But he also doesn't think it's an easy joke. For a listener or reader to laugh at Abe's conversion, a complicated set of conditions must be met. First, a listener has to recognize that Abe and Sol are Jewish names. Second, that listener has to be familiar with the widespread idea that Jews are more interested in money than anything else. And finally, the listener needs to know this information in advance of the joke, and without anyone telling him or her. Jokes, in short, are complicated transactions in which communities are forged, intimacy is offered, and otherwise offensive stereotypes and cliches lose their sting—at least sometimes. _Jokes_ is a book of jokes and a book about them. Cohen loves a good laugh, but as a philosopher, he is also interested in how jokes work, why they work, and when they don't. The delight at the end of a joke is the result of a complex set of conditions and processes, and Cohen takes us through these conditions in a philosophical exploration of humor. He considers questions of audience, selection of joke topics, the ethnic character of jokes, and their morality, all with plenty of examples that will make you either chuckle or wince. _Jokes:_ more humorous than other philosophy books, more philosophical than other humor books. "Befitting its subject, this study of jokes is... light, funny, and thought-provoking.... [T]he method fits the material, allowing the author to pepper the book with a diversity of jokes without flattening their humor as a steamroller theory might. Such a book is only as good as its jokes, and most of his are good.... [E]ntertainment and ideas in one gossamer package."—_Kirkus Reviews_ "One of the many triumphs of Ted Cohen's Jokes-apart from the not incidental fact that the jokes are so good that he doesn't bother to compete with them-is that it never tries to sound more profound than the jokes it tells.... [H]e makes you feel he is doing an unusual kind of philosophy. As though he has managed to turn J. L. Austin into one of the Marx Brothers.... Reading Jokes makes you feel that being genial is the most profound thing we ever do-which is something jokes also make us feel-and that doing philosophy is as natural as being amused."—Adam Phillips, _London Review of Books_ "[A] lucid and jargon-free study of the remarkable fact that we divert each other with stories meant to make us laugh.... An illuminating study, replete with killer jokes."—Kevin McCardle, _The Herald_ "Cohen is an ardent joke-maker, keen to offer us a glimpse of how jokes are crafted and to have us dwell rather longer on their effects."—Barry C. Smith, _Times Literary Supplement_ "Because Ted Cohen loves jokes, we come to appreciate them more, and perhaps think further about the quality of good humor and the appropriateness of laughter in our lives."—Steve Carlson, _Christian Science Monitor_. (shrink)

Ted Sider’s paper “Hell and Vagueness” challenges a certain conception of Hell by arguing that it is inconsistent with God’s justice. Sider’s inconsistencyargument works only when supplemented by additional premises. Key to Sider’s case is a premise that the properties upon which eternal destinies superveneare “a smear,” i.e., they are distributed continuously among individuals in the world. We question this premise and provide reasons to doubt it. The doubts come from two sources. The first is based on evidential considerations (...) borrowed from skeptical theism. A related but separate consideration is that supposing it would be an insurmountable problem for God to make just (and therefore non-arbitrary) distinctions in morally smeared world, God thereby has sufficient motivation not to actualize such worlds. Yet God also clearly has motivation only to actualize some member of the subset of non-smeared worlds which don’t appear non-smeared. For if it was obvious who was morally fit for Heaven and who wasn’t, a new arena of great injustice is opened up. The result is that if there is a God, then he has the motivation and the ability to actualize from just that set of worlds which are not smeared but which are indiscernible from smeared worlds. (shrink)

Abe and his friend Sol are out for a walk together in a part of town they haven't been in before. Passing a Christian church, they notice a curious sign in front that says "$1,000 to anyone who will convert." "I wonder what that's about," says Abe. "I think I'll go in and have a look. I'll be back in a minute; just wait for me." Sol sits on the sidewalk bench and waits patiently for nearly half an hour. Finally, (...) Abe reappears. "Well," asks Sol, "what are they up to? Who are they trying to convert? Why do they care? Did you get the $1,000?" Indignantly Abe replies, "Money. That's all you people care about." Ted Cohen thinks that's not a bad joke. But he also doesn't think it's an easy joke. For a listener or reader to laugh at Abe's conversion, a complicated set of conditions must be met. First, a listener has to recognize that Abe and Sol are Jewish names. Second, that listener has to be familiar with the widespread idea that Jews are more interested in money than anything else. And finally, the listener needs to know this information in advance of the joke, and without anyone telling him or her. Jokes, in short, are complicated transactions in which communities are forged, intimacy is offered, and otherwise offensive stereotypes and cliches lose their sting—at least sometimes. _Jokes_ is a book of jokes and a book about them. Cohen loves a good laugh, but as a philosopher, he is also interested in how jokes work, why they work, and when they don't. The delight at the end of a joke is the result of a complex set of conditions and processes, and Cohen takes us through these conditions in a philosophical exploration of humor. He considers questions of audience, selection of joke topics, the ethnic character of jokes, and their morality, all with plenty of examples that will make you either chuckle or wince. _Jokes:_ more humorous than other philosophy books, more philosophical than other humor books. "Befitting its subject, this study of jokes is... light, funny, and thought-provoking.... [T]he method fits the material, allowing the author to pepper the book with a diversity of jokes without flattening their humor as a steamroller theory might. Such a book is only as good as its jokes, and most of his are good.... [E]ntertainment and ideas in one gossamer package."—_Kirkus Reviews_ "One of the many triumphs of Ted Cohen's Jokes-apart from the not incidental fact that the jokes are so good that he doesn't bother to compete with them-is that it never tries to sound more profound than the jokes it tells.... [H]e makes you feel he is doing an unusual kind of philosophy. As though he has managed to turn J. L. Austin into one of the Marx Brothers.... Reading Jokes makes you feel that being genial is the most profound thing we ever do-which is something jokes also make us feel-and that doing philosophy is as natural as being amused."—Adam Phillips, _London Review of Books_ "[A] lucid and jargon-free study of the remarkable fact that we divert each other with stories meant to make us laugh.... An illuminating study, replete with killer jokes."—Kevin McCardle, _The Herald_ "Cohen is an ardent joke-maker, keen to offer us a glimpse of how jokes are crafted and to have us dwell rather longer on their effects."—Barry C. Smith, _Times Literary Supplement_ "Because Ted Cohen loves jokes, we come to appreciate them more, and perhaps think further about the quality of good humor and the appropriateness of laughter in our lives."—Steve Carlson, _Christian Science Monitor_. (shrink)

The current dominant perspective on addiction as a brain disease has been challenged recently by Marc Lewis, who argued that the brain-changes related to addiction are similar to everyday changes of the brain. From this alternative perspective, addictions are bad habits that can be broken, provided that people are motivated to change. In that case, autonomous choice or “free will” can overcome bad influences from genes and or environments and brain-changes related to addiction. Even though we concur with Lewis (...) that there are issues with the brain disease perspective, we also argue that pointing to black swans can be important, that is: there can be severe cases where addiction indeed tips over into the category of brain disease, but obviously that does not prove that every case of addiction falls into the disease category, that all swans are black. We argue that, for example, people suffering from Korsakoff’s syndrome, can be described as having a brain disease, often caused by alcohol addiction. Moreover, the brain changes occurring with addiction are related to choice-behaviour, habit formation and insight, hence essential mental abilities to break the addiction. We argue for a more graded perspective, where both black swans and white swans are rare, and most cases of addiction come as geese in different shades of gray. (shrink)

In order to make out a case for idealism, I will, in this essay, first present two forms of idealism in their bare outlines (these two being, in my view, the most interesting and defensible forms) and then a set of premises for an argument for idealism. I will then respond to what are the more pertinent difficulties with these, and finally, make some general remarks regarding idealism as a theory.

In this paper we raise three questions of clarification about Alfred Mele's fine recent book, Free Will and Luck. Our questions concern the following topics: (i) Mele's combination of 'luck' and 'Frankfurt-style' objections to libertarianism, (ii) Mele's stipulations about 'compatibilism' and the relation between questions about free action and questions about moral responsibility, and (iii) Mele's treatment of the Consequence Argument.

Many philosophers think that dispositions are necessarily intrinsic. However, there are no good positive arguments for this view. Furthermore, many properties (such as weight, visibility, and vulnerability) are dispositional but are not necessarily shared by perfect duplicates. So, some dispositions are extrinsic. I consider three main objections to the possibility of extrinsic dispositions: the Objection from Relationally Specified Properties, the Objection from Underlying Intrinsic Properties, and the Objection from Natural Properties. These objections ultimately fail.

Ted Sider’s book makes a beautifully presented and compellingly argued case for four dimensionalism. Most of the arguments for four dimensionalism to be found in the literature seem to me to be uncompelling. Ted’s argument from vagueness, given in the last section of chapter 4, is a notable exception. After discussing that argument I will respond to his objections in section 5 chapter 5 to my own temporary identity view.

This article advances and defends three claims: that the proper ethical criticism of environmental art requires a production-oriented approach-an approach that appraises the ethical merits or flaws of the work in terms of how the artwork is created as well as the consequences of its creation; that, depending on contextual factors, ethical flaws in environmental artworks may, but do not necessarily, constitute aesthetic flaws in those works; that, because environmental artworks appropriate part of the environment as an aspect of their (...) identity, an aesthetic flaw in an environmental artwork necessarily also creates aesthetic disvalue in the environment-disvalue that exists in virtue of the creation of the artwork. I conclude with one further, more speculative claim, which deserves further investigation: the aesthetic flaws of an environmental artwork, which result in aesthetic flaws in the natural environment itself, are always ethical flaws of the artwork. This seems to make environmental art distinctive; in the case of non-environmental art, aesthetic flaws do not necessarily constitute ethical flaws. (shrink)

In maintaining that virtue is a legitimate concept worthy of empirical study, a strong situationist approach to the study of behavior is countered. An earlier analysis is then drawn upon to maintain that virtue has the capability of integrating several themes in positive psychology: ethics and health, embodied character, strength and resilience, communally embedded, meaningful purpose, and capacity for wisdom. The six themes are used to provide a framework for considering the unique case of moral and intellectual humility as (...) a virtue. (shrink)

In a 1951 debate that marked the beginnings of the analytic-continental divide, Maurice Merleau-Ponty sided with Georges Bataille in rejecting A. J. Ayer’s claim that “the sun existed before human beings.” This rejection is already anticipated in a controversial passage from Merleau-Ponty’s Phenomenology of Perception, where he claims that “there is no world without an Existence that bears its structure.” I defend Merleau-Ponty’s counterintuitive position against naturalistic and anti-subjectivist critics by arguing that the world emerges in the exchange between perceiver (...) and perceived. A deeper challenge is posed, however, by Quentin Meillassoux, who argues that the “correlationism” of contemporary philosophy rules out any account of the “ancestral” time that antedates all subjectivity. Against Meillassoux, and taking an encounter with fossils as my guide, I hold that the past prior to subjectivity can only be approached phenomenologically. The paradoxical character of this immemorial past, as a memory of the world rather than of the subject, opens the way toward a phenomenology of the “elemental” past. Drawing on Merleau-Ponty’s descriptions of the absolute past of nature and the anonymity of the body, as well as Levinas’ account of the elements at the end of the world, I argue that our own materiality and organic lives participate in the differential rhythms of the elements, opening us to a memory of the world that binds the cosmic past and the apocalyptic future. (shrink)

What's wrong with designer children, bionic athletes, and genetic engineering.

While an environmental ethic is not explicitly developed in A Theory of Justice, or Political Liberalism, it is possible to extrapolate some principles dealing with non-human nature, and thereby some environmental protections, with what Rawls provides. However, his inability to provide a non-anthropocentric environmental ethic might threaten the stability of a 'well-ordered' society, and this possibility gestures to the potential 'problem' of pluralism in general. Certain environmentalists will be dissatisfied with the status of their environmental values in a Rawlsian society. (...) If the group is 'unreasonable', then while they are not technically threats to 'stability' (in that they are not part of the 'overlapping consensus' to begin with), they might instead be threats to the well-orderedness of the society. If the group is 'reasonable', Rawls must hope that they will also agree with enough of the political conception of justice, and be swayed by appeals to reasonableness, that they will join in the overlapping consensus despite their environmental concerns. There appear to be reasons to believe that, at least given a well-ordered society, this will often be the case. (shrink)