In the twenty-first century, the debate about life on other worlds is quickly changing from the realm of speculation to the domain of hard science. Within a few years, as a consequence of the rapid discovery by astronomers of planets around other stars, astronomers very likely will have discovered clear evidence of life beyond the Earth. Such a discovery of extraterrestrial life will change everything. Knowing the answer as to whether humanity has company in the universe will trigger one of (...) the greatest intellectual revolutions in history, not the least of which will be a challenge for at least some terrestrial religions. Which religions will handle the discovery of extraterrestrial life with ease and which will struggle to assimilate this new knowledge about our place in the universe? Some religions as currently practiced appear to only be viable on Earth. Other religions could be practiced on distant worlds but nevertheless identify both Earth as a place and humankind as a species of singular spiritual religious importance, while some religions could be practiced equally well anywhere in the universe by any sentient beings. Weintraub guides readers on an invigorating tour of the world's most widely practiced religions. It reveals what, if anything, each religion has to say about the possibility that extraterrestrial life exists and how, or if, a particular religion would work on other planets in distant parts of the universe. (shrink)

As humans, we frequently engage in mental time travel, reliving past experiences and imagining possible future events. This study examined whether similar factors affect the subjective experience associated with remembering the past and imagining the future. Participants mentally “re-experienced” or “pre-experienced” positive and negative events that differed in their temporal distance from the present , and then rated the phenomenal characteristics associated with their representations. For both past and future, representations of positive events were associated with a greater feeling of (...) re-experiencing than representations of negative events. In addition, representations of temporally close events contained more sensorial and contextual details, and generated a stronger feeling of re-experiencing than representations of temporally distant events. It is suggested that the way we both remember our past and imagine our future is constrained by our current goals. (shrink)

Artificial gametes, derived from stem cells, have the potential to enable in vitro fertilization of embryos. Currently, artificial gametes are only being generated in laboratory animals; however, considerable efforts are underway to develop artificial gametes using human cell sources. These artificial gametes are being proposed as a means to address infertility through assisted reproductive technologies. Nonetheless, the availability of artificial gametes obtained from adult organisms can potentially expand the possibilities of reproduction. Various groups, such as same-sex couples, post-menopausal women, and (...) deceased donors, could potentially utilize artificial gametes to conceive genetically related offspring. The advent of artificial gametes raises significant bioethical questions. Should all these reproductive scenarios be accepted? How can we delineate the range of future reproductive choices? A normative bioethical framework may be necessary to establish a consensus regarding the use of human artificial gametes. This review aims to present the current state of research on the biological roadmap for generating artificial gametes, while also summarizing proposed approaches to establish a normative framework that delineates ethically acceptable paths for reproduction. (shrink)

We introduce an abstract framework for general rough set theory from a mereological perspective and consider possible concepts of ’a priori’ granules and granulation in the same. The framework is ideal for relaxing many of the relatively superfluous set-theoretic axioms and for improving the semantics of many relation based, cover-based and dialectical rough set theories. This is a relatively simplified presentation of a section in three different recent research papers by the present author.

A number of recent papers have described the successful derivation of egg and sperm precursor cells from mouse embryonic stem cells—so-called “artificial” gametes. Although many scientific questions remain, this research suggests numerous new possibilities for stem cell research and assisted reproductive technology, if a similar breakthrough is achieved with human embryonic stem cells. The novel opportunities raised by artificial gametes also prompt new ethical questions, such as whether same-sex couples should be able to access this technology to have children who (...) are genetically related to them both.THE CREATION OF “ARTIFICIAL” GAMETESOver the past two years, a number of papers have been published detailing the first successful attempts at differentiating mouse embryonic stem cells into egg1 and sperm2 precursor cells. Previously, researchers had used embryonic stem cells to generate tissues such as brain, liver, and pancreatic cells, but not germ cells of any kind. Production of gamete precursor cells was achieved initially through allowing stem cell lines to differentiate more or less randomly, but recent research has focused on identifying the precise ways in which differentiation into gametes can be precipitated and controlled. These breakthroughs make it seem likely that ongoing research on human stem cells will yield similar possibilities,3 raising questions over the practicalities of what might be achieved with such “artificial” gametes. In turn, the novel opportunities presented by artificial gametes raise a number of ethical concerns.The initial breakthrough, namely the obtaining of egg cells from mouse stem cells, was achieved by means of relatively simple science. Rather than coaxing stem cells to develop into eggs using complicated cocktails of growth factors, researchers adopted standard cell culture conditions, but grew the cells at higher density than usual.3–6 Growing the cells in this way led to the formation of ovary-like cell aggregates, which (when separated and stimulated with …. (shrink)

PurposeThe purpose of this paper is to study the ethical behaviour of Muslim IT professionals in an attempt to stop many unethical practices such as software piracy, software intellectual property violations and general software development.Design/methodology/approachThis study examines the computer ethical principles presented in the Association for Computing Machinery code of conduct from an Islamic point of view through studying some relevant verses of The Holy Quran and Hadiths of Prophet Mohammed. An evaluation of the benefits of this newly proposed Islamic (...) computer code of ethics is presented by surveying how IT students, IT professionals and software house owners would adhere to it. The evaluation was carried out by teaching different groups of participants aspects of the ACM code of conduct and the proposed Islamic computer ethics code and then surveying their opinions by a questionnaire.FindingsThe study demonstrates that teaching computer ethics in general, and computer ethics from an Islamic point of view in particular, clearly contributes to ethical behaviour of Muslim IT professionals with regards to software development issues.Research limitations/implicationsIt is not possible to put participants through real life scenarios and practically observe how they would react to different ethical situations. The empirical research thus relies on what participants said they would do.Practical implicationsThe newly developed Islamic code of computer ethics and its proposed implementation method can be utilised by organisations for their benefit.Originality/valueThe study is the first to address the issue of computer ethics and Islam for IT professionals. This paper presents a first Islamic computer code of ethics and presents a methodology for applying it. It also reports a study undertaken in Bahrain of how attitudes might be influenced by teaching computer ethics in general, and computer ethics from an Islamic point of view in particular. (shrink)

An original contribution to fundamental metaphysics. It offers a theory of possible individuals and possible worlds. It endeavors to show how its theory of possibility is adequate to various philosophical demands, such as those of modal logic. It employs its theory of possibility to clarify and resolve issues concerning such topics as disposition concepts and counterfactual conditionals. And it deals fruitfully with related metaphysical problems, such as essentialism, the doctrine of internal relations, and so on. The theory of possibility, spelled (...) out formally and with considerable detail, is a development of the approach to possibility suggested by Rescher in his earlier book, Conceptual Idealism. (shrink)

In this paper I want to examine a view of the Darwinian theory of evolution which was put forward fairly recently by A. R. Manser. His approach is of interest not only in itself, but also because it may be expanded to raise some fundamental questions about the nature of the science of biology in general. I shall not consider these further implications here, but shall concentrate on an examination of his thesis in the context in which it is raised. (...) My paper falls into two sections. In the first I shall state Manser's thesis and some of the arguments with which he supports it, and shall try to show how a series of objections raised by A. G. N. Flew and K. Connolly may be answered. In the second I shall offer on my own account a positive argument to provide a possible basis for his point of view, with the aim of indicating why the theory should be of the kind he suggests, and what form the study of evolution must take. (shrink)

Studies man in view of what he may become. Describes how a man must work simultaneously on his knowledge and his being to find inner unity.

Moral theories which, like those of Plato, Aristotle and Aquinas, give a central place to the virtues, tend to assume that as traits of character the virtues are mutually compatible so that it is possible for one and the same person to possess them all. This assumption—let us call it the compatibility thesis—does not deny the existence of painful moral dilemmas: it allows that the virtues may conflict in particular situations when considerations associated with different virtues favour incompatible courses of (...) action, but holds that these conflicts occur only at the level of individual actions. Thus while it may not always be possible to do both what would be just and what would be kind or to act both loyally and honestly, it is possible to be both a kind and a just person and to have both the virtue of loyalty and the virtue of honesty. (shrink)

This paper empirically examines the financial performance of a UK unit trust that was initially “conventional” and later adopted socially responsible investment (SRI) principles (ethical investment principles). Comparison is made with three similar conventional funds whose investment objectives remained unchanged. Analysis techniques employed in previous studies find similar results: mean risk-adjusted performance is unchanged by the switch to SRI, with no evidence of over-or under-performance relative to the benchmark market index by any of the four funds. More interestingly, changes in (...) variability of returns over time are also modelled using generalised autoregressive conditional heteroscedasticity models, not previously applied to SRI funds so far as is known. Results show a temporary increase in variability of returns, followed by a return to previous levels after around 4 years. Evidence shows the increased variability to be associated with the adoption of SRI rather than with a change in fund management. Possible explanations for the subsequent reduction in variability include the spread of corporate social responsibility activities by firms and learning by fund managers. In addition to reporting on a previously unobserved phenomenon, this paper raises questions for further research. (shrink)

A. W. Moore; II*—A Problem for Intuitionism: The Apparent Possibility of Performing Infinitely Many Tasks in a Finite Time, Proceedings of the Aristotelian Soci.

The editor suggested my writing an article on the question whether it was possible to provide an ethics based upon principles which would be agreed to by all enlightened men, and he further suggested that I should begin the article by stating clearly what morality is. That is a somewhat difficult task, because while “morality” might be defined as “living as one ought,” it is a very disputable question whether and how this “ought” is itself to be defined, and I (...) could not undertake to deal with this question by the way as an introduction to an article on something else. It is, however, clear that there is another sense of “ought” besides the strictly moral sense. We do use the term in cases where it does not entail that a man is neglecting his moral duty if he does not do what he “ought.” For instance we say: “You ought to have seen that film,” “You ought not to have made that move,” “You ought to have seen through that argument,” even “Hitler ought to have invaded England after Dunkirk” where we should have regarded it as the reverse of a good thing if he had done what we say he ought. In none of these cases are we asserting a moral obligation. For we do not ordinarily regard people as under a moral obligation to seek their own pleasure, nor to make certain moves in a game, and while we should say that in matters of serious concern a person is morally obliged to do his best to form a true view as to the merits of a relevant argument, we should not say that he was morally obliged actually to form a true view, for this does not depend solely on his will. And in the fourth instance the action is one which we should think morally wrong rather than morally obligatory. What is there in common between “ought” as used in these cases and the moral “ought”? It is that in each case the action fits the situation, either wholly, or with certain limitations, as in the last instance where we presumably mean that to invade England would have fitted in better with Hitler's ends in the given environment than did the policy Hitler actually adopted. (shrink)

Whether it is fair to use personal responsibility of patients for their own health as a rationing criterion in healthcare is a controversial matter. A host of difficulties are associated with the concept of personal responsibility in the field of medicine. These include, in particular, theoretical considerations of justice and such practical issues as multiple causal factors in medicine and freedom of health behaviour. In the article, personal responsibility is evaluated from the perspective of several theories of justice. It is (...) argued that in a healthcare system based on both equality of opportunity and solidarity, responsible health behaviour can—in principle—be justifiably expected. While the practical problems associated with personal responsibility are important, they do not warrant the common knee-jerk refusal to think more deeply about responsibility for health as a means of allocating healthcare resources. In conclusion, the possibility of introducing personal responsibility as a fair rationing criterion is briefly sketched. (shrink)

Context: Practice-based design research is becoming more widely recognized in academia, including at doctoral level, yet there are arguably limited options for dissemination beyond the traditional conference format of paper-based proceedings, possibly with an exhibition or “demonstrator” component that is often non-archival. Further, the opportunities afforded by the traditional-format paper presentations is at times at odds with practice-based methodologies being presented. Purpose: We provide a first-hand descriptive account of developing and running a new international conference with an experimental format that (...) aims to support more analogously the dissemination of practice-based design research. Method: Our approach herein is broadly interpretative, phenomenological and critically reflective in orientation, to analyze our own experiential insights from the conference conception, through to the event itself and post-conference reflections, alongside the reflections fed back by conference delegates. Results: We have found the roundtable format continues to function well for creating a discursive interactional context. However issues arose around the crucial nature of the session chair’s role in enabling rich and multi-voiced discussion and how presenters’, organizers’ and delegates’ voices were captured and documented, with implications for further developing the conference design. Looking forward, there are also questions raised about: balancing the stringency of a rigorous review process with provision of an encouraging platform for early-career researchers; and balancing the need for clear criteria and formatting standards with the “openness” of the submission template and formatting guidelines and/or writing. This includes designers who are new to research cultures. It should also appeal to those working in interdisciplinary research in collaboration with design practitioners (but who may not be practitioners themselves. The conference aims to foster and support a burgeoning “research through design” academic community and to provide a fitting dissemination platform for this community. We hope that the conference will encourage academic communities to give proper consideration to the concept of design as a knowledge-generating activity. Constructivist content: Knowledge about design research is generated from meaningful interaction between people and artifacts as part of the unfolding conference experience. The organizational features of the conference aim to support knowledge dissemination through dialogical relations between people and things in particular contexts of interaction. (shrink)

The idea of moral reform requires that morality be more than a description of what people do value, for there has to be some measure against which to assess progress. Otherwise, any change is not reform, but simply difference. Therefore, I discuss moral reform in relation to two prescriptive approaches to common morality, which I distinguish as the foundational and the pragmatic. A foundational approach to common morality (e.g., Bernard Gert’s) suggests that there is no reform of morality , but (...) of beliefs, values, customs, and practices so as to conform with an unchanging, foundational morality. If, however, there were revision in its foundation (e.g., in rationality), then reform in morality itself would be possible. On a pragmatic view, on the other hand, common morality is relative to human flourishing, and its justification consists in its effectiveness in promoting flourishing. Morality is dependent on what in fact does promote human flourishing and therefore, could be reformed. However, a pragmatic approach, which appears more open to the possibility of moral reform, would need a more robust account of norms by which reform is measured. (shrink)

Background Making the right decisions, while simultaneously showing respect for patient autonomy, represents a great challenge to nursing home staff in the issues of life-prolonging treatment, hydration, nutrition and hospitalisation to dying patents in end-of-life. Objectives To study how physicians and nurses protect nursing home patients' autonomy in end-of-life decisions, and how they justify their practice. Design A qualitative descriptive design with analysis of the content of transcribed in-depth interviews with physicians and nurses. Participants Nine physicians and ten nurses in (...) 10 nursing homes in Norway. Results and interpretations Assessment of the patient's competence to consent to treatment is almost absent. The physicians build their practice on the principles of beneficence and nonmaleficence. Nurses tend to trust the patients' rejection of life support, even when the patients have difficulty speaking or suffer from dementia. Relatives were, according to the health personnel, included in decision-making processes to a very limited extent. However, futile life support is sometimes provided contrary to the physicians' judgement of what constitutes the patient's best interest on occasions when they are pressurised by next of kin. Conclusions The study reveals a need to improve decision-making routines according to ethical ideals and legislation. Conflicts between relatives and healthcare professionals in the decision-making process deflect the focus from searching for the best possible treatment for the terminal patient. Further discussion is required as to whether the concept of autonomy is applicable in situations in which the patient is impaired and dying. (shrink)

This first book-length collection on Levinas and education gathers new texts written especially for this volume by an international group of scholars well known for their work in philosophy, educational theory, and on Levinas. It provides an introduction to some of Levinas's major themes of ethics, justice, hope, hospitality, forgiveness and more, as its contributing authors address some fundamental educational issues such as: what it means to be a teacher; what it means to learn from a teacher; the role of (...) language in the curriculum; literature, ethics, and education; moral education and human relations in schools; ethics of responsibility and philosophical-pedagogical discourse; educational hospitality and interculturalism; unconditional responsibility and education; educating for participatory democratic citizenship; the pedagogy of peace; logic, rationality, and ethics; connecting teaching to spirituality. Levinas always insisted that his aim was not to provide "a program," and accordingly, it is not the intent of the authors to look in Levinas's texts for a set of guidelines, rules, or precepts to be applied to education. Rather, this study invites educators, and researchers in philosophy and philosophy of education, to a thoughtful and critical reading of Levinas, and to engage with his unique style of analysis and questioning as they uncover with these authors the necessity and the possibility of thinking education anew in terms of ethics, justice, responsibility, hope and faith. (shrink)

There are many possible ways of approach to philosophy, and there is also an impossible one, though one that has often been tried. That the philosopher can somehow spin his philosophy out of what he finds inside himself; that he has some private internal source of information in virtue of which he can decide what the Universe must be, without needing to take the trouble to look at it, is a belief that dies hard. But it is now dying, if (...) not dead, so that it is hardly necessary to refute it in detail. It should suffice to say that anybody who cherishes the belief will not find anything to interest him in what follows. I shall simply assume that the philosopher is, what we all are to some extent, a spectator of the world and of man's life in it and a commentator on what he sees. Where the philosopher differs from others is in the kind of interest he takes in the facts, not in the kind of facts that are there to be interested in. (shrink)

In this paper, we examine recent critiques of the debate about defining disease, which claim that its use of conceptual analysis embeds the problematic assumption that the concept is classically structured. These critiques suggest, instead, developing plural stipulative definitions. Although we substantially agree with these critiques, we resist their implication that no general definition of “disease” is possible. We offer an alternative, inductive argument that disease cannot be classically defined and that the best explanation for this is that the concept (...) is structured as a cluster. We further argue that we do not need to reject the possibility of defining the general concept “disease” to legitimate developing stipulative definitions of disease that are relative to particular purposes. A cluster definition of disease is compatible with contextually motivated definitions, which may be considered précisifications of the more general cluster concept. (shrink)

This study examines the contentious claim that much evangelicalism is fundamentalist in character. Within Protestantism, the term `fundamentalism' denotes not only a movement but also a mentality which has greatly affected evangelicals, and which involves preserving as factual a reading of scripture as possible. Here the development and dismantling of the fundamentalist mentality is examined in light of philosophical influences upon evangelicalism over the last three centuries, notably: Common Sense Realism, neo-Calvinism, and modern hermeneutical philosophy. Particular attention is paid to (...) James Barr's critique of fundamentalism and to evangelical rejoinders. Harriet A. Harris proposes that the fundamentalist mentality does not do justice to evangelical experience since it is more concerned with the Bible's factual truthfulness than with its life-giving effects. An appendix on Global Fundamentalism brings together two rarely united fields of study: Protestant fundamentalism's relation to evangelicalism, and its relation to resurgent movements in other religions. (shrink)

Contemporary thinkers who address the problem of causal relations generally favor Hume’s analysis, although some periodically manifest interest in Aristotle’s exposition as an important and viable alternative. Few, however, find among the many philosophers who came between Aristotle and Hume any worthwhile contributor to the development of this problematic. Some might note, for example, Nicholas of Autrecourt as a medieval precursor of Hume, but this merely keeps the discussion fluctuating between the same two poles. This essay aims to call attention (...) to a different and intermediate view, not hitherto noted, that was proposed in the High Middle Ages by Thomas Aquinas. It argues that Aquinas made a significant advance beyond Aristotle in his analysis of antecedent causation, and thereby made possible the certification of some elements in Hume’s analysis, without subscribing to its more extreme results. In so doing, moreover, Aquinas adumbrated some problems in contemporary analytic discussions of the causal relationships between events, and consequently may shed light on their solution. (shrink)

This paper supports the scientific position that panpsychism is a valid category of possible resolutions to the hard problem of consciousness, and it focuses on a solution to the 'combination problem' in panpsychism. I argue for a new way of thinking about consciousness in which consciousness is not viewed in reference to subjects, and that the concept of a 'subject' is borne of the illusion of self. Therefore, we don't face a combination problem if the notion of a subject is (...) superfluous and consciousness itself is pervasive in the form of a field. The paper is also a more general discussion about the importance of pursuing this scientific question in the twenty-first century: is consciousness a more fundamental aspect of the universe than we have previously assumed? (shrink)

Consider the following dilemma. If it is possible to identify the cause of a person's action and beliefs - causes that are outside the agent's own conscious reasoning - in what sense can we say that the person chooses what she does or she thinks? If the person did not consciously choose, then it is reasonable to ask whether she should be held morally responsible for any of the subsequent consequences of her actions. This is the general territory of the (...) puzzle that Neil Levy's thoughtful and elegantly written new book addresses. He explores what scientific advances in the study of consciousness might tell us about our capacity for choice and, hence, our responsibility for those choices. (shrink)

Informed consent is reviewed as it applies to psychiatric patients. Although new legislation, such as the Mental Health Act 1983, provides a useful safeguard for the protection of the civil rights of patients, it could actually reduce their humane care unless applied with sensitivity for the nature of their unique difficulties. In order to guard against this possibility, we suggest that legal requirements should be considered in light of the ethical principles which underlie them. Three principles are considered: those of (...) autonomy (freedom); beneficence (paternalism); and the fiduciary principle (partnership). Psychotherapy is offered as a model for informed consent, which might be generalised to other clinical situations. (shrink)

In this series of studies A. C. Grayling looks at approaches the problem of how sceptical challenges can be met.

Using twelve modern philosophers as moments in a rather contrived dialectic, Kiley examines man's relation to himself and to the world. While showing the many "possibilities of human existence," he suggests that "human completion" can only be achieved through the religious experience.—A. F. G.

Social referencing informs and regulates one’s relation with the environment as a function of the perceived appraisals of social partners. Increased emphasis on relational and social contexts in the study of emotion makes this interpersonal process particularly relevant to the field. However, theoretical conceptualizations and empirical operationalizations of social referencing are disjointed across domains and populations of study. This article seeks to unite and refine the study of this construct by providing a clear and comprehensive definition of social referencing. Our (...) perspective presents social referencing and social appraisal as coterminous processes and emphasizes the importance of a relational and interpersonal approach to the study of emotion. We conclude by outlining possible lines of research on this construct. (shrink)

BackgroundAs moral case deliberations (MCDs) have increasingly been implemented in health care institutions as a form of ethics support, it is relevant to know whether and how MCDs actually contribute to positive changes in care. Insight is needed on what actually happens in daily care practice following MCD sessions. This study aimed at investigating the impact of MCD and exploring how ‘impact of MCD’ should be conceptualized for future research.MethodsA multiple-case study was conducted in a care organization for people with (...) intellectual disabilities and/or acquired brain injury, by observing MCD sessions as ‘cases’, followed by interviews with health care professionals concerning the follow-up to these cases, and a focus group with involved MCD facilitators. A conceptual scheme concerning the possible impact formed the basis for analysis: (1) individual moral awareness; (2) the actions of health care professionals; (3) collaboration among health care professionals; (4) the concrete situation of the client; (5) the client’s quality of care and life; (6) the organizational and policy level.ResultsAccording to interviewees, their moral awareness and their collaboration, both among colleagues and with clients’ relatives, improved after MCD. Perceived impact on client situation, quality of care/life and the organizational level varied among interviewees or was difficult to define or link to MCD. Three aspects were added to the conceptual scheme concerning the impact of MCD: (a) preparations and expectations prior to the MCD session; (b) a translational step between the conclusions of the MCD session and practical events in the following period, and (c) collaboration with clients’ relatives. A negative impact of MCD was also found on misunderstandings among participants and disappointment about lack of follow-up.ConclusionsConcretizing and conceptualizing the ‘impact’ of MCD is complicated as many factors play a role either before or during the transition from MCD to practice. It is important to consider ‘impact’ in a broad sense and to relate it to the goals and context of the MCD in question. Future studies in this field should pay additional attention to the preparations, content and process involved in ethics support, including clients’ and relatives’ experiences. (shrink)

Purpose. To consider the uniqueness of Descartes’ way of interpreting poetry as a type of philosophizing that makes it possible to comprehend the metaphysical nature of man. Its implementation involves the consistent solution of the following tasks: a) understanding methodological changes in the philosophy of the 20th century in the process of actualization of anthropological interest; b) argumentation of the importance of poetic thinking for early Descartes in the process of addressing modern historians of philosophy and the thinker’s texts. Theoretical (...) basis. I rely on the conceptual positions of phenomenology, existentialism and hermeneutics. Originality. Finding of the study is that poetic thinking is the most authentic way of meaningful comprehension of the metaphysicity of man. The paper outlines the nature of the expression of this correlation in the philosophizing of the 20th-21th centuries and substantiates the thesis about the importance of the poetic principle for understanding the phenomenon of man in early works by Descartes. Conclusions. The paper examined the methodological shifts in anthropologically oriented philosophizing of the 20th-21th centuries and focused on the manifestations of related moments in the philosophical legacy of Descartes. The latter demonstrates the existence of a still underestimated version of interpreting the metaphysical foundations of human existence, the form of understanding of which is poetic thinking. It is a form of caring for the humane in man. (shrink)

In this paper I argue that it is morally important for doctors to trust patients. Doctors' trust of patients lays the foundation for medical relationships which support the exercise of patient autonomy, and which lead to an enriched understanding of patients' interests. Despite the moral and practical desirability of trust, distrust may occur for reasons relating to the nature of medicine, and the social and cultural context within which medical care is provided. Whilst it may not be possible to trust (...) at will, the conscious adoption of a trusting stance is both possible and warranted as the burdens of misplaced trust fall more heavily upon patients than doctors. (shrink)

Can merely thinking about an imaginary situation provide evidence for how the world actually is--or how it ought to be? In this lively book, Roy A. Sorensen addresses this question with an analysis of a wide variety of thought experiments ranging from aesthetics to zoology. Presenting the first general theory of thought experiment, he sets it within an evolutionary framework and integrates recent advances in experimental psychology and the history of science, with special emphasis on Ernst Mach and Thomas Kuhn. (...) Sorensen explores what thought experiments are, how they work, and what their virtues and vices are. In his view, philosophy differs from science in degree, but not in kind. For this reason, he claims, it is possible to understand philosophical thought experiments by concentrating on their resemblance to scientific relatives. Sorensen assesses the hazards of thought experiments and grants that there are interesting ways in which the method leads us astray, but attacks most scepticism about thought experiments as arbitrary. He maintains that they should be used--as they generally are--as part of a diversified portfolio of techniques, creating a network of cross-checks that make for impressive reliability. (shrink)

Die meisten Systematiker, vergleichende Anatomen und Paläontologen ziehen es vor ihr Material, so weit es möglich ist, in allmählich abgestuften Serien zu ordnen. Dass solche Reihen dem Gange der Evolution wirklich entsprechen, ist nach der Erfahrung der Genetiker unwahrscheinlich. Vor zwanzig Jahren hat schonMorgan darauf hingewiesen, dass man die verschiedenen erblichen Typen vonDrosophila der Flügelform und auch der Augenfarbe nach in allmählich abgestuften Reihen ordnen könne, dass aber nichts dafür spräche, dass solche Reihen phylogenetische Bedeutung haben. Für die Haarfarbe vonMus (...) musculus undMus wagneri kommt Verfasser zum gleichen Schluss. Wenn man schwarz und weiss als Extreme einer Farbenserie annimmt, so kann genetisch der Übergang von schwarz zu weiss in einem Sprung gemacht werden oder aber mittels einer Serie von neun Abstufungen, die teilweise rückläufig sind. Wenn man die Wildfarbe, schwarz-agouti, als Ausgangspunkt annimmt, so wird Melanismus mit einem einzigen Sprung, Albinismus aber entweder mit einem Sprung oder mittels einer Reihe von Zwischenfarben erreicht. Für solche Reihen von Zwischenfarben gibt es dann noch verschiedene Möglichkeiten. Die abgestuften Typenserien stellen daher keine Entwicklungsserien dar, wenn nicht festgestellt ist, dass sie chronologische Serien sind. Dass man sich einfach mit ihrer Aufstellung zufrieden zu geben pflegt, erschwert das Studium der Evolution.La plupart des systématistes, d'anatomistes comparatives et de paléontologistes préfèrent autant que possible à classer leurs objects dans des séries graduées. L'expérience de généticistes rend invraisemblable que de telles séries représentent le cours de l'évolution.Morgan a démontré, il y a vingt ans, que les différents types héréditaires deDrosophila se laissent classer dans des séries graduées d'après la forme des ailes et d'après la couleur des yeux. Pourtant, toute indication manque que ces séries ont une importance phylogénétique. L'auteur arrive à la même conclusion quant à la couleur des poils deMus musculus et deMus wagneri. Si l'on admette que noir et blanc sont les extrêmes d'une série de couleurs, la transition de noir à blanc peut être le résultat d'un seul changement génétique; ou bien elle peut être l'effet d'une série de neuf changements dont quelques uns reviennent sur leurs pas. Si l'on prend la couleur noire-agoutie de la souris sauvage comme point de départ, le mélanisme est obtenu par un seul changement génétique. L'albinisme peut être obtenu par une de plusieurs séries de couleurs intermédiaires ou bien par un seul changement génétique. Les séries graduées des types peuvent représenter l'évolution seulement au cas qu'elles sont en même temps des séries chronologiques. L'habitude de se contenter de les reconnaître partout empéche plutôt l'étude de l'évolution. (shrink)