What could ground normative restrictions concerning cultural appropriation which are not grounded by independent considerations such as property rights or harm? We propose that such restrictions can be grounded by considerations of intimacy. Consider the familiar phenomenon of interpersonal intimacy. Certain aspects of personal life and interpersonal relationships are afforded various protections in virtue of being intimate. We argue that an analogous phenomenon exists at the level of large groups. In many cases, members of a group engage in shared practices (...) that contribute to a sense of common identity, such as wearing certain hair or clothing styles or performing a certain style of music. Participation in such practices can generate relations of group intimacy, which can ground certain prerogatives in much the same way that interpersonal intimacy can. One such prerogative is making what we call an appropriation claim. An appropriation claim is a request from a group member that non-members refrain from appropriating a given element of the group’s culture. Ignoring appropriation claims can constitute a breach of intimacy. But, we argue, just as for the prerogatives of interpersonal intimacy, in many cases there is no prior fact of the matter about whether the appropriation of a given cultural practice constitutes a breach of intimacy. It depends on what the group decides together. (shrink)

This paper investigates what molecular biology has done for our understanding of the gene. I base a new account of the gene concept of classical genetics on the classical dogma that gene differences cause phenotypic differences. Although contemporary biologists often think of genes in terms of this concept, molecular biology provides a second way to understand genes. I clarify this second way by articulating a molecular gene concept. This concept unifies our understanding of the molecular basis of a wide variety (...) of phenomena, including the phenomena that classical genetics explains in terms of gene differences causing phenotypic differences. (shrink)

This paper takes the form of a critical discussion of Crispin Wright’s notion of entitlement of cognitive project. I examine various strategies for defending the claim that entitlement can make acceptance of a proposition epistemically rational, including one which appeals to epistemic consequentialism. Ultimately, I argue, none of these strategies is successful, but the attempt to isolate points of disagreement with Wright issues in some positive proposals as to how an epistemic consequentialist should characterize epistemic rationality.

Darwinians are realists about the force of selection, but there has been surprisingly little discussion about what form this realism should take. Arguments about the units of selection in general and genic selectionism in particular reveal two realist assumptions: (1) for any selection process, there is a uniquely correct identification of the operative selective forces and the level at which each impinges; and (2) selective forces must satisfy the Pareto-style requirement of probabilistic causation. I argue that both assumptions are false; (...) we must temper realism about the force of selection and revise the way we think about probabilistic causation. (shrink)

"Reeve's book is an excellent companion to Plato's Apology and a valuable discussion of many of the main issues that arise in the early dialogues. Reeve is an extremely careful reader of texts, and his familiarity with the legal and cultural background of Socrates' trial allows him to correct many common misunderstandings of that event. In addition, he integrates his reading of the apology with a sophisticated discussion of Socrates' philosophy. The writing is clear and succinct, and the research is (...) informed by a thorough acquaintance with the secondary literature. Reeve's book will be accessible to any serious undergraduate, but it is also a work that will have to be taken into account by every scholar doing advanced research on Socrates." --Richard Kraut, Northwestern University. (shrink)

Watson and Crick’s discovery of the structure of DNA led to developments that transformed many biological sciences. But what were the relevant developments and how did they transform biology? Much of the philosophical discussion concerning this question can be organized around two opposing views: theoretical reductionism and layer-cake antireductionism. Theoretical reductionist and their anti-reductionist foes hold two assumptions in common. First, both hold that biological knowledge is structured like a layer cake, with some biological sciences, such as molecular biology cast (...) at lower levels of organization, and others, such as classical genetics, cast at higher levels. Second, both assume that scientific knowledge is structured by theory and that the productivity of scientific research depends on whether the underlying theory identifies the fundamentals upon which the phenomena to be explained and investigated depend. In the first part of this paper, I challenge these assumptions. In the second part, I show how recasting the basic theory of classical genetics made it possible to retool the methodologies of genetics. It was the investigative power of these retooled methodologies, and not the explanatory power of a gene-based theory, that transformed biology. (shrink)

We argue against Thomson’s view that abortion is permissible even if fetuses have high moral status. Against this, we argue that, because many mothers are morally responsible for their pregnancies, they have a special obligation to assist. Finally, we address an objection according to which many mothers whose pregnancies are not a product of rape are not morally responsible to a sufficient degree, and so an obligation to assist is not generated. This objection assumes that the force of the mother’s (...) right to bodily integrity is not diminished if she is insufficiently morally responsible. We challenge this assumption. Our complete thesis is as follows: If a mother is morally responsible to a sufficient degree, she acquires an obligation to assist. If she is not, the force of her right to bodily integrity may be reduced. (shrink)

Investigates the resolution of contradictions and ambiguous derogations in a code, by means of the imposition of partial orderings. Although formulated as a study in the logic of norms, it provided the initial ideas for work on the logic of theory (or belief) change, developed by the authors in a series of papers by the authors and Peter Gardenfors beginning in 1985.

I clarify the difference between pluralist and monist interpretations of levels of selection disputes. Lloyd has challenged my claim that a plurality of models correctly accounts for situations such as maintenance of the sickle-cell trait, and I revisit this example to show that competing theories don’t disagree about the existence of ‘high-level’ or ‘lowlevel’ causes; rather, they parse these causes differently. Applying Woodward’s theory of causation, I analyze Sober’s distinction between ‘selection of’ versus ‘selection for’. My analysis shows that this (...) distinction separates true causes from pseudocauses, but it also reveals that the distinction is irrelevant to the levels debate; it makes no sense to say true causes are at higher levels and not lower levels. The levels debate is not about separating real causes from pseudocauses; it’s about finding useful ways to parse and disentangle causes. (shrink)

What ecological advantages do animals gain by being able to detect, extract and exploit wavelength information? What are the advantages of representing that information as hue qualities? The benefits of adding chromatic to achromatic vision, marginal in object detection, become apparent in object recognition and receiving biological signals. It is argued that this improved performance is a direct consequence of the fact that many animals' visual systems reduce wavelength information to combinations of four basic hues. This engenders a simple categorical (...) scheme that permits a rich amount of sensory information to be rapidly and efficiently employed by cognitive machinery of limited capacity. (shrink)

Next SectionThe dominant conception of medical ethics being taught in British and American medical schools is at best pointless and at worst dangerous, or so it will be argued. Although it is laudable that medical schools have now given medical ethics a secure place in the curriculum, they go wrong in treating it like a scientific body of knowledge. Ethics is a unique subject matter precisely because of its widespread familiarity in all areas of life, and any teaching has to (...) start from this shared ethical understanding and from the familiar ethical concepts of ordinary language. Otherwise there is a real risk that spurious technocratic jargon will be deployed by teacher and student alike in the futile search for intellectual respectability, culminating in a misplaced sense of having “done” the ethics module. There are no better examples of such jargon than “consequentialism”, “deontology”, and the “Four Principles”. At best, they cannot do the work they were designed to do and, at worst, they can lead student and practitioner into ignoring their own healthy ethical intuitions and vocabulary. (shrink)

Concerns about exploiting the poor or economically disadvantaged in clinical research are widespread in the bioethics community. For some, any research that involves economically disadvantaged individuals is de facto ethically problematic. The economically disadvantaged are thought of as “venerable” to exploitation, impaired decision making, or both, thus requiring either special protections or complete exclusion from research. A closer examination of the worries about vulnerabilities among the economically disadvantaged reveals that some of these worries are empirically or logically untenable, while others (...) can be better resolved by improved study designs than by blanket exclusion of poorer individuals from research participation. The scientific objective to generate generalisable results and the ethical objective to fairly distribute both the risks and benefits of research oblige researchers not to unnecessarily bar economically disadvantaged subjects from clinical research participation. (shrink)

Some have argued that embryos and fetuses have the moral status of personhood because of certain criteria that are satisfied during gestation. However, these attempts to base personhood during gestation on intrinsic characteristics have uniformly been unsuccessful. Within a secular framework, another approach to establishing a moral standing for embryos and fetuses is to argue that we ought to confer some moral status upon them. There appear to be two main approaches to defending conferred moral standing; namely, consequentialist and contractarian (...) arguments. This article puts forward a consequentialist argument for the conferred moral standing of preembryos, embryos, fetuses, and infants. It states and defends an original version of the commonlyheld view that moral standing increases during gestation. It also explores the implications of this viewpoint for several issues: what is involved in showing ‘respect’ for preembryos; and whether it is permissible to create preembryos solely for research. (shrink)

The dominant conventionalist view explains the wrong of breaking a promise as failing to do our fair share in supporting the practice of promise-keeping. Yet, this account fails to explain any unique moral standing that a promisee has to demand that the promisor keep the promise. In this paper, I provide a conventionalist response to this problem. In any cooperative practice, participants stand as both beneficiary and contributor. As a beneficiary, they are morally required to follow the rules of the (...) practice. As a contributor, they have claims on other participants to follow the rules. According to the rules of promise-keeping, a promisee has a unique claim on the promisor, and the personal wrong of breaking a promise should be understood as the violation of this unique and practice-dependent claim. (shrink)

Since Thomas Kuhn’s The Structure of Scientific Revolutions (1962), historians and philosophers of science have paid increasing attention to the implications of disciplinarity. In this chapter we consider restrictions posed to interdisciplinary exchange between ecology and economics that result from a particular kind of commitment to the ideal of disciplinary purity, that is, that each discipline is defined by an appropriate, unique set of objects, methods, theories, and aims. We argue that, when it comes to the objects of study in (...) ecology and economics, ideas of disciplinary purity have been underwritten by the artificial-natural distinction. We then problematize this distinction, and thus disciplinary purity, both conceptually and empirically. Conceptually, the distinction is no longer tenable. Empirically, recent interdisciplinary research has shown the epistemological and policy-oriented benefits of dealing with models which explicitly link anthropogenic (i.e., “artificial”) and non-anthropogenic factors (i.e., “natural”). We conclude that, in the current age of the Anthropocene, it is to be expected that without interdisciplinary exchange, ecology and economics may relinquish global relevance because the distinct and separate systems to which each “pure” science was originally made to apply will only diminish over time. (shrink)

The concept of natural capital denotes a rich variety of natural processes, such as ecosystems, that produce economically valuable goods and services. The Anthropocene signals a diminished state of nature, however, with some scholars claiming that no part of the Earth’s surface remains untouched. What are ecological economists to make of natural capital during the Anthropocene? Is natural capital still a coherent concept? What is the conceptual relationship between nature and natural capital? This article wrestles with John Stuart Mill’s two (...) concepts of nature and argues that during the Anthropocene, natural capital should be understood as denoting economically valuable processes that are not absolutely—but relatively—detached from intentional human agency. (shrink)

Two methods have been used in the investigation of the stakes-sensitivity of knowledge as it occurs in ordinary language: (a) asking participants about the truth or acceptability of knowledge ascriptions and (b) asking participants how much evidence someone needs to gather before they know that something is the case. This second, “evidence-seeking”, method has reliably found effects of stakes-sensitivity while the method of asking about knowledge ascriptions has not. Consistent with this pattern, in Francis et al. (Ergo, 2019), we found (...) evidence of scalar stakes effects using an evidence-seeking approach. Whilst we found this evidence across several cases using both negative (“don’t know”) and positive (“know”) polarities, there remain questions about the directness of the relationship between stakes and knowledge ascriptions; it is possible that stakes are affecting knowledge by affecting the confidence of the attributor. For example, Bach (in: Peter & Preyer, 2005) has argued that knowledge attributions do not track truth attributions but rather thresholds for doxastic confidence. To investigate the role of confidence in knowledge ascriptions, we use our existing paradigm (Francis et al., 2019) but include measures of both participant and protagonist confidence. As far as we are aware, this is the first empirical investigation of the role of confidence in stakes effects on knowledge that incorporates an evidence-seeking approach using several scenarios. Overall, across both positive (“know”) and negative (“don’t know”) polarity conditions, we find further evidence of a stakes effect on knowledge using an evidence-seeking paradigm. However, and importantly, we do not find evidence that changes in participant confidence partially or fully mediate the stakes effect on knowledge. (shrink)

Objectives: Clinical trials in humans in Germany—as in many other countries—must be approved by local research ethics committees . The current study has been designed to document and evaluate decisions of chairpersons of RECs in the problematic field of non-therapeutic research with minors. The authors’ purpose was to examine whether non-therapeutic research was acceptable for chairpersons at all, and whether there was certainty on how to decide in research trials involving more than minimal risk.Design: In a questionnaire, REC chairpersons had (...) to evaluate five different scenarios with non-therapeutic research. The scenarios described realistic potential research projects with minors, involving increasing levels of risk for the research participants. The chairpersons had to decide whether the respective projects should be approved.Methods: A total of 49 German REC chairpersons were sent questionnaires; 29 questionnaires were returned. The main measurements were approval or rejection of research scenarios.Results: Chairpersons of German RECs generally tend to accept non-therapeutic research with minors if the apparent risk for the participating children is low. If the risk is clearly higher than “minimal”, the chairpersons’ decisions differ widely.Conclusion: The fact that there seem to be different attitudes of chairpersons to non-therapeutic research with minors is problematic from an ethical point of view. It suggests a general uncertainty about the standards of protection for minor research participants in Germany. Therefore, further ethical and legal regulation of non-therapeutic research with minors in Germany seems necessary. (shrink)

We discuss some ways in which topos theory (a branch of category theory) can be applied to interpretative problems in quantum theory and quantum gravity. In Sec.1, we introduce these problems. In Sec.2, we introduce topos theory, especially the idea of a topos of presheaves. In Sec.3, we discuss several possible applications of topos theory to the problems in Sec.1. In Sec.4, we draw some conclusions.

Susan Mills and John Beatty proposed a propensity interpretation of fitness (1979) to show that Darwinian explanations are not circular, but they did not address the critics' chief complaint that the principle of the survival of the fittest is either tautological or untestable. I show that the propensity interpretation cannot rescue the principle from the critics' charges. The critics, however, incorrectly assume that there is nothing more to Darwin's theory than the survival of the fittest. While Darwinians all scoff at (...) this assumption, they do not agree about what role, if any, this principle plays in Darwin's theory of natural selection. I argue that the principle has no place in Darwin's theory. His theory does include the idea that some organisms are fitter than others. But greater reproductive success is simply inferred from higher fitness. There is no reason to embody this inference in the form of a special principle of the survival of the fittest. (shrink)

Aristotle on Practical Wisdom is the first full-scale commentary on Nicomachean Ethics VI to be issued in a century, and the most illuminating ever. A meticulous translation with facing-page analysis enables readers to engage directly with Aristotle's account, while the lucid introduction locates it in the context of his—and later—ethical thought.

Sleep onset is associated with marked changes in behavioral, physiological, and subjective phenomena. In daily life though subjective experience is the main criterion in terms of which we identify it. But very few studies have focused on these experiences. This study seeks to identify the subjective variables that reflect sleep onset. Twenty young subjects took an afternoon nap in the laboratory while polysomnographic recordings were made. They were awakened four times in order to assess subjective experiences that correlate with the (...) (1) appearance of slow eye movement, (2) initiation of stage 1 sleep, (3) initiation of stage 2 sleep, and (4) 5 min after the start of stage 2 sleep. A logistic regression identified control over and logic of thought as the two variables that predict the perception of having fallen asleep. For sleep perception, these two variables accurately classified 91.7% of the cases; for the waking state, 84.1%. (shrink)

Leading philosophical accounts presume that Thomas H. Morgan’s transmission theory can be understood independently of experimental practices. Experimentation is taken to be relevant to confirming, rather than interpreting, the transmission theory. But the construction of Morgan’s theory went hand in hand with the reconstruction of the chief experimental object, the model organism Drosophila melanogaster . This raises an important question: when a theory is constructed to account for phenomena in carefully controlled laboratory settings, what knowledge, if any, indicates the theory’s (...) relevance to phenomena outside highly controlled settings? The answer, I argue, is found within the procedural knowledge embedded within laboratory practice. †To contact the author, please write to: Minnesota Center for Philosophy of Science, University of Minnesota, Department of Philosophy, 831 Heller Hall, 271 19th Ave., University of Minnesota, Minneapolis, MN 55455‐0310; e‐mail: [email protected]. (shrink)

The teaching of ethics in UK medical schools has recently been reviewed, from the perspective of the teachers themselves. A questionnaire survey of medical undergraduates at King’s College London School of Medicine provides useful insight into the students’ perception of ethics education, what they consider to be the value of learning ethics and law, and how engaged they feel with the subject.

The distinction between clinical practice and surgical research may seem trivial, but this distinction can become a complex issue when innovative surgeries are substituted for standard care without patient knowledge. Neither the novelty nor the risk of a new surgical procedure adequately defines surgical research. Some institutions tacitly allow the use of new surgical procedures in series of patients without informing individuals that they are participating in a scientific study, as long as no written protocol or hypothesis exists. Institutions can (...) justify this practice by viewing human research in narrow terms as an activity outlined in a formal protocol. Application of limited definitions, however, erodes patients' rights and risks losing public confidence in how biomedical research is conducted. I propose an operational definition of human research also be recognised. Enforcing more rigid and less ambiguous guidelines of human research may curtail enrolment into some studies, but it will also protect patients from being used as subjects without their knowledge. (shrink)

While public (or government) corruption has attracted a lot of attention, private (or business) corruption has been relatively under-addressed. A specific form of corruption, namely, paying a bribe to a public official, is easily identifiable as unethical and possibly illegal, but this is not clear in a private business context. Yet private bribery also has serious organizational consequences. This exploratory study suggests that individuals have difficulty in recognizing the ethical connotations of potential bribery, and draws attention to the need to (...) build skills in this regard. (shrink)

Corporate governance is increasingly becoming an issue of global concern, not least because we are more and more living in a corporate world that transcends international boundaries. The main purpose and motivation of this study is to determine how the international community should motivate businesses in fostering exemplary corporate governance, therefore eliminating obstacles to ethically exemplary behavior. The empirical approach utilized here has been applied to 161 businesses, both listed and over-the-counter (OTC) companies, with the results indicating that ethical considerations, (...) corporate governance and organizational performance are inextricably linked and, to an extent, demonstrably proportional. This study also indicates a major finding that family management is a significant mediating variable of the ethical considerations of corporate governance and organizational performance. Finally, this study has developed an operational model of ethical considerations of corporate governance as a consultancy aid for businesses that wish to implement and/or boost their performance in respect to corporate governance. (shrink)

Clark Glymour has argued that hypothetico-deductivism, which many take to be an important method of scientific confirmation, is hopeless because it cannot be reconstructed in classical logic. Such reconstructions, as Glymour points out, fail to uphold the condition of relevance between theory and evidence. I argue that the source of the irrelevant confirmations licensed by these reconstructions lies not with hypothetico-deductivism itself, but with the classical logic in which it is typically reconstructed. I present a new reconstruction of hypothetico-deductivism in (...) relevance logic that does maintain the condition of relevance between theory and evidence. Hence, if hypothetico-deductivism is an important rationale in science, we have good reason to believe that the logic underlying scientific discourse is captured better by relevance logic than by its classical counterpart. (shrink)

Abstract.British colonialism and Orientalist scholarship on India were key factors affecting the initial Hindu responses to modern science and technology in the nineteenth century. One response was the elaboration of avataric evolutionism—the idea that ancient myths of Vishnu's ten incarnations anticipated Darwinian evolution. This idea quickly became intertwined with political and nationalist concerns and cannot be fully understood in a purely theological context. These concerns were reflected in scriptural interpretation, especially in what may be termed the scientific exegesis of the (...) Vedas and Puranas. Such scientific exegesis of scripture appealed to Keshub Chunder Sen, the leading figure of the Brahmo Samaj in the second half of the nineteenth century. Keshub was apparently the first Indian to develop the notion of avataric evolutionism, in the context of his “New Dispensation,” a synthesis of all religious traditions (in particular Hinduism and Christianity) and modern science. His pronouncement of avataric evolutionism in 1882, however, was not the first proposal of the idea. I conclude with an examination of the Western roots of this idea, specifically in the writings of Helena Petrovna Blavatsky. (shrink)

Kengo Miyazono, in his work Delusions and Beliefs, defends a teleo-functional account of delusions. In my contribution to this symposium, I question one of Miyazono’s motivations for appealing to teleo-functionalism over its main rival, dry-functionalism. Miyazono suggests that teleo-functionalism, unlike dry-functionalism, can account for the compatibility of the theses (i) that delusions are genuine doxastic states (doxasticism about delusions) and (ii) that delusions do not perform the typical causal roles of beliefs (the causal difference thesis). I argue, however, that there (...) are also ways for dry-functionalism to account for this compatibility. If what I have to say is correct, then Miyazono is perhaps too hasty—at least in one important respect—to opt for teleo-functionalism over dry-functionalism. Dry-functionalism has an equally good chance of satisfying some of Miyazono’s explanatory goals. (shrink)

This chapter contains section titled: Extension and Extended Substance? Bodies and Extended Substances Bodies, Space, and the Ontology of Everyday Life Acknowledgments References and Further Reading.

If some philosophers had not existed, the history of philosophy would have to invent them. After all, what would the introduction to philosophy teacher do without good old Berkeley, the notorious denier of common sense, or Hume, the infamous sceptic. In some cases, in fact, philosophers have been invented by the history of philosophy. I don't mean to suggest that historians of philosophy have actually altered the past by bringing into being real flesh and blood philosophers. Rather, I mean to (...) say that the textbook caricatures of famous philosophers are often a creation of the tradition, encrusted layers of hoary myths and legends which often hold the actual philosopher prisoner, the myths of Berkeley and Hume which I just alluded to being excellent examples. (shrink)

The Swedish philosopher Hägerström, who was professor in Uppsala during the first quarter of the present century, devoted much attention to the philosophical and psychological analysis of moral and legal phenomena. Hägersträm is a difficult writer. He had steeped himself in the works of German philosophers and philosophical jurists, and his professional prose-style both in German and in Swedish had been infected by them so that it resembles glue thickened with sawdust. But he enjoys a very high reputation in his (...) own and adjacent countries, and it seems to me that this is well deserved. I think, therefore, that it may be interesting and useful to try to provide English philosophers with an outline in my own words of Hägerström's doctrines, as I understand them, about the topic named in the title of this paper. (shrink)

Objective: To examine lay persons’ ability to identify methods of random allocation and their acceptability of using methods of random allocation in a clinical trial context.Design: Leaflets containing hypothetical medical, non-medical, and clinical trial scenarios involving random allocation, using material from guidelines for trial information leaflets.Setting and participants: Adults attending further education colleges , covering a wide range of ages, occupations, and levels of education.Main measures: Judgements of whether each of five methods of allocation to two groups was random in (...) a medical or non-medical scenario. Judgements of whether these allocation methods were acceptable in a randomised clinical trial scenario, with or without a scientific justification for randomisation.Results: The majority of our group of participants judged correctly that allowing people their preference was not random, and that the following were random: using a computer with no information about the individual , tossing a coin, drawing a name out of a hat. Judgements were split over allocating people in turn . Judgements were no different in medical and non-medical scenarios. Few of the correctly identified random methods were judged to be acceptable in a clinical trial scenario. Inclusion of a scientific justification for randomising significantly increased the acceptability of only one random method: allocation by computer.Conclusions: Current UK guidelines’ recommended description of random allocation by computer seems warranted. However, while potential trial participants may understand what random allocation means, they may find it unacceptable unless offered an acceptable justification for its use. (shrink)

Many elite athletes try to imitate the effects of high altitude training by using hypoxic air machines. These training devices are thought to boost the oxygen carrying capacity of the blood and the production of red blood cells which are believed to yield an important competitive advantage in endurance sports. Hypoxic air machines do not contravene current antidoping regulations. However, many sports practitioners and some officials have expressed a feeling of uneasiness towards this new training technique, comparing it with traditional (...) doping. And, indeed, the introduction of hypoxic air machines paves the way for allowing doping in a near future.All sports related arguments that have been advanced in defence of these machines also support traditional doping. For instance, some objectors argue that hypoxic air machines render “a chemical advantage” and should therefore be forbidden. A standard defence against this criticism is that “even if it becomes more effective, training is still necessary for users of hypoxic air machines”. The same answer, however, could be given by supporters of lifting the prohibition on doping. In a sense, every training technique yields a chemical process in the body.Consider now fairness in competition …. (shrink)

The increasing possibilities for using tissue for research and development in genetics and biotechnology have made stored human biological materials more important than ever. Using stored human biological materials raises many legal and ethical questions. On an international level however, the use of these materials has not been regulated in a detailed manner so far. The Council of Europe recently declassified the text of the proposal for an instrument on the use of archived human biological materials in biomedical research for (...) public consultation. The purpose of this paper is to comment on this document regarding its primary goal, which is to protect the rights and fundamental freedoms of the individual whose biological materials could be included in a research project. The guidelines offer good basic protection for sources of identifiable human biological materials but, surprisingly, offer no protection to sources of anonymous or anonymised materials. (shrink)

We numerically solve the functional differential equations (FDEs) of 2-particle electrodynamics, using the full electrodynamic force obtained from the retarded Lienard–Wiechert potentials and the Lorentz force law. In contrast, the usual formulation uses only the Coulomb force (scalar potential), reducing the electrodynamic 2-body problem to a system of ordinary differential equations (ODEs). The ODE formulation is mathematically suspect since FDEs and ODEs are known to be incompatible; however, the Coulomb approximation to the full electrodynamic force has been believed to be (...) adequate for physics. We can now test this long-standing belief by comparing the FDE solution with the ODE solution, in the historically interesting case of the classical hydrogen atom. The solutions differ. A key qualitative difference is that the full force involves a ‘delay’ torque. Our existing code is inadequate to calculate the detailed interaction of the delay torque with radiative damping. However, a symbolic calculation provides conditions under which the delay torque approximately balances (3rd order) radiative damping. Thus, further investigations are required, and it was prematurely concluded that radiative damping makes the classical hydrogen atom unstable. Solutions of FDEs naturally exhibit an infinite spectrum of discrete frequencies. The conclusion is that (a) the Coulomb force is not a valid approximation to the full electrodynamic force, so that (b) the n-body interaction needs to be reformulated in various current contexts such as molecular dynamics. (shrink)

The Role of Motivation in Complex Problem SolvingPrevious research on Complex Problem Solving (CPS) has primarily focused on cognitive factors as outlined below. The current paper discusses the role of motivation during CPS and argues that motivation, emotion, and cognition interact and cannot be studied in an isolated manner. Motivation is the process that determines the energization and direction of behavior (Heckhausen, 1991).Three motivation theories and their relation to CPS are examined: McClelland’s achievement motivation, Maslow’s hierarchy of needs, and Dörner’s (...) needs as outlined in PSI-theory. We chose these three theories for several reasons. First, space forces us to be selective. Second, the three theories are among the most prominent motivational theories. Finally, they are need theories postulating several motivations and not just one. A thinking-aloud protocol is provided to illustrate the role of motivational and cognitive dynamics in CPS. Problems are part of all the domains of human life. The field of CPS investigates problems that are complex, dynamic, and non-transparent (Dörner, 1996). Complex problems consist of many interactively interrelated variables. Dynamic ones change and develop further over time, regardless of whether the involved people take action. And non-transparent problems have many aspects of the problem situation that are unclear or unknown to the involved people. CPS researchers focus exactly on such kinds of problems. Under a narro... (shrink)

The science of evolution acutely raises the perennial question of humankind’s place in the world. How does the theological anthropology of humans as imago Dei relate to an evolutionary anthropology with human beings derived from ancestral hominid species? Evolutionary biologists disclose ever greater similarities and continuity between animals and humans. Is human distinctiveness simply continuous with other ancestral forms of life or is there any kind of discontinuity? The answers to these questions depend not only on zoological considerations but also (...) on one’s philosophy of nature. The standard anthropology within the Catholic Church is the dual-origin model: the human body originates through evolution, but the human soul is directly created by God. This formulation, however, is not without difficulties, primarily for its seeming Cartesian dualism of a body and soul as distinct substances. This paper develops the anthropology of David Braine who, drawing upon Aristotle, Thomas Aquinas, and Ludwig Wittgenstein, clearly situates humans as animals in great continuity with them. However, as linguistic animals who think in a medium of words, humans have a form of life—a soul—that transcends bodily processes. Braine’s anthropology provides a more coherent anthropology to understand the continuity and discontinuity of the human person in phylogenetic relationship to other species within an evolutionary perspective. (shrink)

Certain proximities between two distinguished but very dissimilar contemporaries, Quintilian and Tacitus, may be stated. Contemporary they were, though the former, born probably a little before A.D. 40, was older by about twenty years. Both were from outside Rome, Quintilian certainly of provincial, Spanish, origin, Tacitus very probably from one of the Galliae, yet both exemplars of Romanitas.