The widespread effects of the coronavirus disease 2019 (COVID-19) pandemic have negatively impacted upon many athletes’ mental health and increased reports of depression as well as symptoms of anxiety. Disruptions to training and competition schedules can induce athletes’ emotional distress, while concomitant government-imposed restrictions (e.g., social isolation, quarantines) reduce the availability of athletes’ social and emotional support. Written Emotional Disclosure (WED) has been used extensively in a variety of settings with diverse populations as a means to promote emotional processing. The (...) expressive writing protocol has been used to a limited extent in the context of sport and predominantly in support of athletes’ emotional processing during injury rehabilitation. We propose that WED offers an evidence-based treatment that can promote athletes’ mental health and support their return to competition. Research exploring the efficacy of the expressive writing protocol highlights a number of theoretical models underpinning the positive effects of WED; we outline how each of these potential mechanisms can address the multidimensional complexity of the challenging circumstances arising from the COVID-19 pandemic (e.g., loss of earnings, returning to training and competition). Considerations and strategies for using WED to support athletes during the COVID-19 pandemic are presented. (shrink)

This study examined the influence of 7 high school esports developmental programs on student self-regulation, growth mindset, positive youth development, perceived general health and physical activity, and sport behaviour. A total of 188 students originally participated, with 58 participants completing both pre- and post-program information. At baseline, no significant differences were found between youth e-athletes and their aged-matched controls. The analysis for the observation period showed a significant interaction effect for the PYD confidence scale, with post-hoc comparisons showing a significant (...) decrease in the control group from pre- to post assessment whereas the esports group remained the same. Time main effects showed a decrease in the self-regulation motivation factor, PYD connection factor and PA for all participants. Overall, this study showed that students enrolled in their respective school esports program did not differ from those who did not in self-regulation, growth mindset, PYD, perceived health and PA, and sport behaviour. It was likely that all participants showed a decrease in motivation, connection, and PA due to COVID19 lockdown during the study period. This study is the first to investigate the longitudinal impact of student involvement in high school esports and showed that esports participation did not have a negative impact on any health or psychological factors. (shrink)

Airway mucin secretion is important pathophysiologically and as a model of polarized epithelial regulated exocytosis. We find the trafficking protein, SNAP23, selectively expressed in secretory cells compared with ciliated and basal cells of airway epithelium by immunohistochemistry and FACS, suggesting that SNAP23 functions in regulated but not constitutive epithelial secretion. Heterozygous SNAP23 deletant mutant mice show spontaneous accumulation of intracellular mucin, indicating a defect in baseline secretion. However mucins are released from perfused tracheas of mutant and wild-type mice at the (...) same rate, suggesting that increased intracellular stores balance reduced release efficiency to yield a fully compensated baseline steady state. In contrast, acute stimulated release of intracellular mucin from mutant mice is impaired whether measured by a static imaging assay 5 min after exposure to the secretagogue ATP or by kinetic analysis of mucins released from perfused tracheas during the first 10 min of ATP exposure. Together, these data indicate that increased intracellular stores cannot fully compensate for the defect in release efficiency during intense stimulation. The lungs of mutant mice develop normally and clear bacteria and instilled polystyrene beads comparable to WT mice, consistent with these functions depending on baseline secretion that is fully compensated. (shrink)

The aim of the present study was to provide support for the validation of the Teammate Burnout Questionnaire. Athletes from a variety of team sports completed the TBQ and the Athlete Burnout Questionnaire. Confirmatory factor analysis revealed acceptable fit indexes for the three-dimensional models of the TBQ and the ABQ. Multi-trait multi-method analysis revealed that the TBQ and ABQ showed acceptable convergent and discriminant validity. The preliminary validation of the TBQ indicates the utility of the scale to reflect athletes’ perceptions (...) of their teammates’ burnout and offers researchers the opportunity to quantitatively assess an important aspect of the social environment in the development of athlete burnout. (shrink)

This volume is a collection of essays by various contributors in honor of the late Laurence Berns, Richard Hammond Elliot Tutor Emeritus at St. John's College, Annapolis. The essays address the literary, political, theological, and philosophical themes of his life's work as a scholar, teacher, and constant companion of the "great books.".

Over the past twenty-five years, no one has done more than J. P. Moreland to equip Christians to love God with their minds. In his work as a Christian philosopher, scholar, and apologist, he has influenced thousands of students, written groundbreaking books, and taught multitudes of Christians to defend their faith. -/- In honor of Moreland's ministry, general editors Paul M. Gould and Richard Brian Davis have assembled a team of friends and colleagues to celebrate his work. In (...) three major parts devoted to philosophy, apologetics, and spiritual formation, scholars such as Stewart Goetz, Paul Copan, Douglas Groothuis, Scott Rae, and Klaus Issler interact with Moreland's thought and make their own contributions to these important subjects. Moreland concludes the volume with his own essay, "Reflections on the Journey Ahead.". (shrink)

On May, 1996, two of the journalism profession's best known and most articulate speakers spent 90 minutes in what was billed as a Heavyweight Bout. The subject was public journalism; The audience, a Society of Professiona1 Journalists regional conference; the venue, Macon, Georgia.

Philosophy and Christianity make truth claims about many of the same things. They both claim to provide answers to the deep questions of life. But how are they related to one another? Four Views on Christianity and Philosophy introduces readers to four predominant views on the relationship between philosophy and the Christian faith and their implications for life. Each author identifies the propositional relation between philosophy and Christianity along with a section devoted to the implications for living a life devoted (...) to the pursuit of wisdom. -/- The contributors and views include: -/- Graham Oppy—Conflict: Philosophy Trumps Christianity K. Scott Oliphint—Covenant: Christianity Trumps Philosophy Timothy McGrew—Convergence: Philosophy Confirms Christianity Paul Moser—Conformation: Philosophy Reconceived Under Christianity. (shrink)

Thomas Jefferson and Philosophy: Essays on the Philosophical Cast of Jefferson’s Writings is a collection of essays on topics that relate to philosophical aspects of Jefferson’s thinking over the years. Much historical insight is given to ground the various philosophical strands in Jefferson’s thought and writing on topics such as political philosophy, moral philosophy, slavery, republicanism, wall of separation, liberty, educational philosophy, and architecture.

Perceptual learning involves an improvement in perceptual judgment with practice, which is often specific to stimulus or task factors. Perceptual learning has been shown on a range of visual tasks but very little research has explored chromatic perceptual learning. Here, we use two low level perceptual threshold tasks and a supra-threshold target detection task to assess chromatic perceptual learning and category effects. Experiment 1 investigates whether chromatic thresholds reduce as a result of training and at what level of analysis learning (...) effects occur. Experiment 2 explores the effect of category training on chromatic thresholds, whether training of this nature is category specific and whether it can induce categorical responding. Experiment 3 investigates the effect of category training on a higher level, lateralized target detection task, previously found to be sensitive to category effects. The findings indicate that performance on a perceptual threshold task improves following training but improvements do not transfer across retinal location or hue. Therefore, chromatic perceptual learning is category specific and can occur at relatively early stages of visual analysis. Additionally, category training does not induce category effects on a low level perceptual threshold task, as indicated by comparable discrimination thresholds at the newly learned hue boundary and adjacent test points. However, category training does induce category effects on a supra-threshold target detection task. Whilst chromatic perceptual learning is possible, learnt category effects appear to be a product of left hemisphere processing, and may require the input of higher level linguistic coding processes in order to manifest. (shrink)

In this paper we explore the idea that Pentecostalism is best supported by conjoining it to a postmodern, narrative epistemology in which everything is a text requiring interpretation. On this view, truth doesn’t consist in a set of uninterpreted facts that make the claims of Christianity true; rather, as James K. A. Smith says, truth emerges when there is a “fit” or proportionality between the Christian story and one’s affective and emotional life. We argue that Pentecostals should reject this account (...) of truth, since it leads to either a self-refuting story-relativism or the equally problematic fallacy of story-ism: favoring one’s own story over others without legitimate reason. In either case, we contend, the gospel itself is placed at risk. (shrink)

The physics of time asymmetry has never been a single well-defined subject, but more a collection of consistency problems which arise in almost all branches ...

Being human while trying to scientifically study human nature confronts us with our most vexing problem. Efforts to explicate the human mind are thwarted by our cultural biases and entrenched infirmities; our first-person experiences as practical agents convince us that we have capacities beyond the reach of scientific explanation. What we need to move forward in our understanding of human agency, Paul Sheldon Davies argues, is a reform in the way we study ourselves and a long overdue break with (...) traditional humanist thinking. Davies locates a model for change in the rhetorical strategies employed by Charles Darwin in _On the Origin of Species_. Darwin worked hard to anticipate and diminish the anxieties and biases that his radically historical view of life was bound to provoke. Likewise, Davies draws from the history of science and contemporary psychology and neuroscience to build a framework for the study of human agency that identifies and diminishes outdated and limiting biases. The result is a heady, philosophically wide-ranging argument in favor of recognizing that humans are, like everything else, subjects of the natural world—an acknowledgement that may free us to see the world the way it actually is. (shrink)

Many scientists regard mass and energy as the primary currency of nature. In recent years, however, the concept of information has gained importance. In this book, eminent scientists, philosophers, and theologians chart various aspects of information, from quantum information to biological and digital information, in order to understand how nature works. Beginning with a historical treatment of the topic, the book also examines physical and biological approaches to information, and the philosophical, theological, and ethical implications.

It is popularly believed within sport's practice communities that a contest fails if the competitor who performs most skilfully in it does not win. The belief is rarely acknowledged explicitly, and therefore deserves to be considered ideological in a sense. In this paper I challenge that belief. For conceptual reasons, I confine the discussion to the purposive sports, e.g. football and tennis. The concept of skill is approached by articulation of a set of platitudes about skill in the purposive sports. (...) The first is the conceptual wedge between skill and success. The second is the distinction between skill and other performance-relevant qualities such as courage, strength and luck. The third is the fact that skill deficits can be compensated by sufficient amounts of the other performance relevant qualities. The fourth is the dispositional and dynamic character of skill. The relation between skill and final objectives in the purposive sports means that (i) qualities such as nerve and courage can trump the more skilful performance; and (ii) poor execution of a narrow range of skills can result in the competitive failure of the more skilful performance. There is no viable ideal of sport that would ground regret about the realisation of the immediately preceding possibilities. The inclination towards such regret might be partly motivated by the wish to take a gratifying view of ourselves. An end to this response, and a more inclusive, less hierarchical conception of sport skills, is worth recommending. (shrink)

The finite age of the universe and the existence of cosmological horizons provides a strong argument that the observable universe represents a finite causal region with finite material and informational resources. A similar conclusion follows from the holographic principle. In this paper I address the question of whether the cosmological information bound has implications for fundamental physics. Orthodox physics is based on Platonism: the laws are treated as infinitely precise, perfect, immutable mathematical relationships that transcend the physical universe and remain (...) totally unchanged by physical processes, however extreme. If instead the laws of physics are regarded as akin to computer software, with the physical universe as the corresponding hardware, then the finite computational capacity of the universe imposes a fundamental limit on the precision of the laws and the specifiability of physical states. That limit depends on the age of the universe. I examine how the imprecision of the laws impacts on the evolution of highly entangled states and on the problem of dark energy. (shrink)

Clear guidelines addressing the ethically appropriate use of anti-infectives in the setting of hospice care do not exist. There is lack of understanding about key treatment decisions related to infection treatment for patients who are eligible for hospice care. Ethical concerns about anti-infective use at the end of life include: (1) delaying transition to hospice, (2) prolonging a dying process, (3) prescribing regimens incongruent with a short life expectancy and goals of care, (4) increasing the reservoir of potential resistant pathogens, (...) (5) placing unreasonable costs on a capitated hospice system. Although anti-infectives are thought to be relatively safe, they can place a burden on patients and be inconsistent to particular care plans. The current complex, and at times fragmented, medical care often fails to address these issues in decision-making. In many ways, the ethics governing the end of life decisions related to dialysis, hydration/nutrition, and hypercalcemia parallel those of anti-infectives. In this article we articulate important elements in ethical decision-making in the application of anti-infectives for patients who are eligible for hospice care, and we point to the need for prospective studies to help refine particular guidelines in these cases. (shrink)

ABSTRACT Clear guidelines addressing the ethically appropriate use of anti‐infectives in the setting of hospice care do not exist. There is lack of understanding about key treatment decisions related to infection treatment for patients who are eligible for hospice care. Ethical concerns about anti‐infective use at the end of life include: (1) delaying transition to hospice, (2) prolonging a dying process, (3) prescribing regimens incongruent with a short life expectancy and goals of care, (4) increasing the reservoir of potential resistant (...) pathogens, (5) placing unreasonable costs on a capitated hospice system. Although anti‐infectives are thought to be relatively safe, they can place a burden on patients and be inconsistent to particular care plans. The current complex, and at times fragmented, medical care often fails to address these issues in decision‐making. In many ways, the ethics governing the end of life decisions related to dialysis, hydration/nutrition, and hypercalcemia parallel those of anti‐infectives. In this article we articulate important elements in ethical decision‐making in the application of anti‐infectives for patients who are eligible for hospice care, and we point to the need for prospective studies to help refine particular guidelines in these cases. (shrink)

Fred Dretske asserts that the conscious or phenomenal experiences associated with our perceptual states—e.g. the qualitative or subjective features involved in visual or auditory states—are identical to properties that things have according to our representations of them. This is Dretske's version of the currently popular representational theory of consciousness . After explicating the core of Dretske's representational thesis, I offer two criticisms. I suggest that Dretske's view fails to apply to a broad range of mental phenomena that have rather distinctive (...) subjective or qualitative features. I also suggest that Dretske's view, in identifying conscious experiences with features of our perceptual states, casts its aim too low. It deflates further than it should and, in consequence, fails to capture what are arguably some of the most important phenomena associated with our conscious lives. (shrink)

There is a widespread assumption that the universe in general, and life in particular, is 'getting more complex with time'. This book brings together a wide range of experts in science, philosophy and theology and unveils their joint effort in exploring this idea. They confront essential problems behind the theory of complexity and the role of life within it: what is complexity? When does it increase, and why? Is the universe evolving towards states of ever greater complexity and diversity? If (...) so, what is the source of this universal enrichment? This book addresses those difficult questions, and offers a unique cross-disciplinary perspective on some of the most profound issues at the heart of science and philosophy. Readers will gain insights in complexity that reach deep into key areas of physics, biology, complexity science, philosophy and religion. (shrink)

: The oft-repeated claim that life is ‘ written into ’ the laws of nature is examined and criticised. Arguments are given in favour of life spreading between near-neighbour planets in rocky impact ejecta (transpermia), but against panspermia, leading to the conclusion that if life is indeed found to be widespread in the universe, some form of life principle or biological determinism must be at work in the process of biogenesis. Criteria for what would constitute a credible life principle are (...) elucidated. I argue that the key property of life is its information content, and speculate that the emergence of the requisite information-processing machinery might require quantum information theory for a satisfactory explanation. Some clues about how decoherence might be evaded are discussed. The implications of some of these ideas for ‘ fine-tuning ’ are discussed. (shrink)

When behaviours or character traits match sociocultural expectation, heteronomy is a natural suspicion. A further natural suspicion is that the behaviours or character traits are unhealthy for the agent or for objectives of social justice and liberation. Second Wave feminism therefore includes a robust narrative of unease about female self-sexualisation. Third Wave feminism has more upbeat narratives of the latter, in terms of confidence and empowerment. The preceding tension is refracted through cases such as Ronda Rousey and ‘derby girls’, as (...) well as those of many less ostentatious women. It is argued that such self-sexualisation can be autonomous as opposed to heteronomous. It is argued, furthermore, that it is not a priori unhealthy for the agent and that autonomous female self-sexualisation admits of degrees of self-consciousness and articulacy. At the same time, such self-sexualisation takes place within gendered social structures, with consequences that legitimate the reinvocation of Second Wave motifs such as the commodification of female sexuality and the privileging of precise images of female sexuality. (shrink)

The importance of applying game theory to the evolution of information in the presence of noise has recently become widely recognized. This Special Issue addresses the theme of spontaneously emergent order in both classical and quantum systems subject to external noise, and includes papers directly related to game theory or the development of supporting techniques. In the following editorial overview we examine the broader context of the subject, including the tension between the destructive and creative aspects of noise, and foreshadow (...) the significance of some of the subsequent papers in the volume. (shrink)

A persistent boast of the historical approach to functions is that functional properties are normative. The claim is that a token trait retains its functional status even when it is defective, diseased, or damaged and consequently unable to perform the relevant task. This is because historical functional categories are defined in terms of some sort of historical success -- success in natural selection, typically -- which imposes a norm upon the performance of descendent tokens. Descendents thus are supposed to perform (...) the associated task even when they cannot. The conceit, then, is that malfunctions are explicable in terms of historical success. The aim of this paper is to challenge this conceit. My thesis is that the historical approach to functions lacks the resources with which to account for the possibility of malfunctions. If functional types are defined in terms of historical success, then tokens that lack the defining property due to defect, and tokens that have lost the defining property due to disease or damage, are excluded from the functional category. Historically based malfunctions, in consequence, are impossible. The historical approach is no better than its non-historical competitors in accounting for the presumed normativity of functional properties. (shrink)

The Caster Semenya debacle touched off by the 2009 Berlin World Athletics Championships resulted finally in IOC and IAAF abandonment of sex testing, which gave way to procedures that make female competition eligibility dependent upon the level of serum testosterone, which must be below the male range or instrumentally countered by androgen resistance. We argue that the new policy is unsustainable because (i) the testosterone-performance connection it posits is uncompelling; (ii) testosterone-induced female advantage is not ipso facto unfair advantage; (iii) (...) the new policy reflects the gender policing impulses endemic to sport as well as the broader cultural impulses to monstrify women and to doctor women who have nothing wrong with them; (iv) female?male performance disparities are not the only reason for sex-segregated sport, but co-exist with respectable cultural and practical reasons, which (v) provide a powerful case for allowing athletes to compete in the sex category congruent with their gender identity. (shrink)

This book is a survey of the range of apparently miraculous accidents of nature that have enabled the universe to evolve its familiar structures (atoms, stars, galaxies, and life itself) concludes with an investigation of the so-called anthropic principle.

We study the response of switched particle detectors to static negative energy densities and negative energy fluxes. It is demonstrated how the switching leads to excitation even in the vacuum and how negative energy can lead to a suppression of this excitation. We obtain quantum inequalities on the detection similar to those obtained for the energy density by Ford and co-workers and in an ‘‘operational’’ context by Helfer. We reexamine the question ‘‘Is there a quantum equivalence principle?’’ in terms of (...) our model. Finally, we briefly address the issue of negative energy and the second law of thermodynamics. (shrink)

For decades most scientists assumed that life emerged billions of years ago in a “primordial soup” somewhere on the Earth’s surface. Evidence is mounting, however, that life may have begun deep beneath the surface, perhaps near a volcanic ocean vent or even inside the hot crust itself. Since there are hints that life’s history on Earth extends back through the phase of massive cosmic bombardment, it may be that life started on Mars and came here later, perhaps inside rocks ejected (...) from the Red Planet by large impacts. The traffic of intact rocks between Mars and Earth is now an established fact, and experiments confirm that microbes could survive the rigours of the journey through space if cocooned within such material. Unfortunately, this planetary cross- contamination compromises astrobiologists’ hope of finding a second genesis in the solar system. (shrink)

When behaviours or character traits match sociocultural expectation, heteronomy is a natural suspicion. A further natural suspicion is that the behaviours or character traits are unhealthy for the agent or for objectives of social justice and liberation. Second Wave feminism therefore includes a robust narrative of unease about female self-sexualisation. Third Wave feminism has more upbeat narratives of the latter, in terms of confidence and empowerment. The preceding tension is refracted through cases such as Ronda Rousey and ‘derby girls’, as (...) well as those of many less ostentatious women. It is argued that such self-sexualisation can be autonomous as opposed to heteronomous. It is argued, furthermore, that it is not a priori unhealthy for the agent and that autonomous female self-sexualisation admits of degrees of self-consciousness and articulacy. At the same time, such self-sexualisation takes place within gendered social structures, with consequences that legitimate the reinvocation of Second Wave motifs such as the commodification of female sexuality and the privileging of precise images of female sexuality. (shrink)

One of the most influential physics books of the twentieth century was actually about biology. In a series of lectures, Erwin Schrödinger described how he believed that quantum mechanics, or some variant of it, would soon solve the riddle of life. These lectures were published in 1944 under the title What is life? and are credited by some as ushering in the age of molecular biology. In the nineteenth century, many scientists thought they knew the answer to Schrödinger’s rhetorical question. (...) Life, they maintained, was some sort of magic matter. The continued use of the term ‘organic chemistry’ is a hangover from that era. The belief that there is a chemical recipe for life led to the hope that, if only we knew what it was, we could mix up the right stuff in a test tube and make life in the lab. Most research on biogenesis has followed that tradition, by assuming that chemistry was a bridge — and a long one at that — linking matter with life. Elucidating this chemical pathway has been a tantalizing goal, spurred on by the famous Miller–Urey experiment of 1952, in which amino acids were made by sparking electricity through a mixture of water and common gases. But the concept has turned out to be something of a blind alley, and further progress with prebiotic chemical synthesis has been frustratingly slow. The origin of life remains one of the great outstanding mysteries of science. To take up Schrödinger’s suggestion, a radical solution to the problem, ‘What is life?’ could be that quantum mechanics enabled life to emerge directly from the atomic world, without the need for complex intermediate chemistry. Life must have a chemical basis: organic molecules provide the hardware for biology. But what about the software? When Schrödinger asked, ‘What is life?’ he could already glimpse the central significance of the cell’s information storage and replication processes, even though the role of DNA and the genetic code was yet to be discovered.. (shrink)

There is a morally questionable laxity in our practices of apologising. A genuine apology involves substantially more than regret about offence caused by one’s behaviour. I argue that it is in fact possible to unpack a normative paradigm (or essence) underlying the practice of apologising. This essence involves doxastic, affective, and dispositional elements, related at the moral phenomenological level. The Consummate apologiser believes that he has transgressed because of identifiable moral saliences of his conduct, feels reproachful towards himself as a (...) result, and as a result resolves to avoid repetition of the same conduct. The latter might require the cultivation of new dispostions or the sharpening of existing ones. It is rational to accept an apology insofar as the preceding doxastic, affective, and dispositional elements are believed to be present and rational in the apologiser. In accepting an apology, the recipient agrees to the attempt at normalisation of relations with the transgressor. (shrink)

The social exchange theory of reasoning, which is championed by Leda Cosmides and John Tooby, falls under the general rubric “evolutionary psychology” and asserts that human reasoning is governed by content-dependent, domain-specific, evolutionarily-derived algorithms. According to Cosmides and Tooby, the presumptive existence of what they call “cheater-detection” algorithms disconfirms the claim that we reason via general-purpose mechanisms or via inductively acquired principles. We contend that the Cosmides/Tooby arguments in favor of domain-specific algorithms or evolutionarily-derived mechanisms fail and that the notion (...) of a social exchange rule, which is central to their theory, is not correctly characterized. As a consequence, whether or not their conclusion is true cannot be established on the basis of the arguments they have presented. (shrink)

A quantum particle moving in a gravitational field may penetrate the classically forbidden region of the gravitational potential. This raises the question of whether the time of flight of a quantum particle in a gravitational field might deviate systematically from that of a classical particle due to tunnelling delay, representing a violation of the weak equivalence principle. I investigate this using a model quantum clock to measure the time of flight of a quantum particle in a uniform gravitational field, and (...) show that a violation of the equivalence principle does not occur when the measurement is made far from the turning point of the classical trajectory. The results are then confirmed using the so-called dwell time definition of quantum tunnelling. I conclude with some remarks about the strong equivalence principle in quantum mechanics. (shrink)

A simple model of a quantum clock is applied to the old and controversial problem of how long a particle takes to tunnel through a quantum barrier. The model has the advantage of yielding sensible results for energy eigenstates and does not require the use of time-dependent wave packets. Although the treatment does not forbid superluminal tunneling velocities, there is no implication of faster-than-light signaling because only the transit duration is measurable, not the absolute time of transit. A comparison is (...) given with the weak-measurement post-selection calculations of Steinberg. (shrink)

The problem of how a mixture of chemicals can spontaneously transform themselves into even a simple living organism remains one of the great outstanding challenges to science. Various primordial soup theories have been proposed in which chemical self- organization brings about the required level of complexity. Major conceptual obstacles remain, however, such as the emergence of the genetic code, and the “chicken-and-egg” problem concerning which came first: nucleic acids or proteins. Currently fashionable is the so-called RNA world theory, which casts (...) RNA in the role of both chicken and egg. Other theories assume that protein chemistry and even clay crystal life came before nucleic acids. To be fully successful, a theory of biogenesis has to explain not merely the emergence of molecular replication and chemical complexity, but the crucial information content and information processing capabilities of the living cell. (shrink)

Astrobiologists are aware that extraterrestrial life might differ from known life, and considerable thought has been given to possible signatures associated with weird forms of life on other planets. So far, however, very little attention has been paid to the possibility that our own planet might also host communities of weird life. If life arises readily in Earth-like conditions, as many astrobiologists contend, then it may well have formed many times on Earth itself, which raises the question whether one or (...) more shadow biospheres have existed in the past or still exist today. In this paper, we discuss possible signatures of weird life and outline some simple strategies for seeking evidence of a shadow biosphere. Key Words: Weird life—Multiple origins of life—Biogenesis—Biomarkers—Extremophiles—Alternative biochemistry. Astrobiology 9, 241–249. (shrink)

In attempting to re-think the notion of asymmetry and its relations with 'first philosophy' and to see how that notion is tracked by the provocation of scepticism, the paper demonstrates something about the implications of Levinas' ethical asymmetry. The paper considers Levinas' tendency to introduce the topic of scepticism when confronted by the logical and textual difficulties that necessarily befall his account of the ethical relation. It argues that such an introduction commits Levinas to the claim: first philosophy entails a (...) fundamental (first person) asymmetry and its attendant scepticism. If, for Levinas, scepticism and first person asymmetry are implicated in all attempts at first philosophy, the paper suggests that an intriguing place to set it to work is those pages of Being and Time which prioritize being-towards-death, the polemical focus of Levinas' being-for-beyond-my-death. (shrink)

Jacob Bekenstein's identification of black hole event horizon area with entropy proved to be a landmark in theoretical physics. In this paper we trace the subsequent development of the resulting generalized second law of thermodynamics (GSL), especially its extension to incorporate cosmological event horizons. In spite of the fact that cosmological horizons do not generally have well-defined thermal properties, we find that the GSL is satisfied for a wide range of models. We explore in particular the case of an asymptotically (...) de Sitter universe filled with a gas of small black holes as a means of casting light on the relative entropic ‘worth’ of black hole versus cosmological horizon area. We present some numerical solutions of the generalized total entropy as a function of time for certain cosmological models, in all cases confirming the validity of the GSL. (shrink)

T he term emergence is used to describe the appearance of new properties that arise when a system exceeds a certain level of size or complexity, properties that are absent from the constituents of the system. It is a concept often summed up by the phrase that “the whole is greater than the sum of its parts,” and it is a key notion in the burgeoning field of complexity science. Life is often cited as a classic example of an emergent (...) phenomenon: no atoms of my body are living, yet I am living (see, for example, Morowitz [1]). Biological organisms depend on the processes of their constituent parts, yet they nevertheless exhibit a degree of autonomy from their parts (see, for example, Kauffman [2]). How can this be? These seem to be contradictory properties. (shrink)

Today’s medical training environment exposes medical trainees to many aspects of what has been called “the hidden curriculum.” In this article, we examine the relationship between two aspects of the hidden curriculum, the performance of emotional labor and the characterization of patients and proxies as “bad,” by analyzing clinical ethics discussions with resident trainees at an academic medical center. We argue that clinicians’ characterization of certain patients and proxies as “bad,” when they are not, can take an unnecessary toll on (...) trainees’ emotions. We conclude with a discussion of how training in ethics may help uncover and examine these aspects of the hidden curriculum. (shrink)

Teleosemantics asserts that mental content is determined by natural selection. The thesis is that content is fixed by the historical conditions under which certain cognitive mechanisms—those that produce and those that interpret representational states—were selectively successful. Content is fixed by conditions of selective success. The thesis of this paper is that teleosemantics is mistaken, that content cannot be fixed by conditions of selective success, because those conditions typically outnumber the intentional objects within a given representational state. To defend against this (...) excess, advocates of teleosemantics must attempt to privilege some conditions of success while ignoring others. This results in selective explanations that are ad hoc, thereby depriving teleosemantics of the virtues it hoped to inherit from the theory of evolution by natural selection, including its alleged naturalistic credentials. (shrink)

Most writing on research ethics is about researcher treatment of participants. This essay considers a participant threat to researcher privacy and integrity. It is based partly upon a real-life sport research case, and discusses a participant request to know if the researcher supports a particular and popular football team. The researcher does support this team, but felt disinclined to answer truthfully, and so lied. It is argued, with the help of analogous cases, that the participant question is what Borge calls (...) ‘unwarranted’, despite the football fan culture of allegiance disclosure. It is further argued, again following Borge, that refusal of the question would have generated a conversational admitture, resulting in the participant truly believing what the researcher correctly believes he has no right to know. The researcher is therefore justified in lying. This justification is buttressed by Swanton's virtue ethical account of right action, according to which an action is right if it is ‘overall virtuous’ (OV), and that entails that it is the (a) best possible action in the circumstances. Here, actions which are typically right, such as truth-telling, are sometimes not, and may even on occasion be wrong-making qualities of actions. It is argued, however, that honesty retains a positive moral value and dishonesty a positive moral disvalue, and it is therefore to be regretted that the OV course of action involves lying. The researcher should therefore regret the OV lie, should ponder if he could have done anything to prevent the situation, and should consider what he can do to prevent its recurrence. A global prescription to protect researchers is probably out of reach, but one suggestion for this sort of case is that the researcher tells the participant at the outset, in appropriately hospitable tones, that he is unable to disclose anything of his own affections. (shrink)