The phylogenetic position of the hagfish remains enigmatic. In contrast to molecular data that suggest monophyly of the cyclostomes, several morphological features imply a more ancestral state of this animal compared with the lampreys. To resolve this question requires an understanding of the embryology of the hagfish, especially of the neural crest. The early development of the hagfish has long remained a mystery. We collected a shallow‐water‐dwelling hagfish, Eptatretus burgeri, set up an aquarium tank designed to resemble its habitat, and (...) successfully obtained several embryos. By observing the histology and expression of genes known to play fundamental roles in the neural crest, we found that the hagfish crest develops as delaminating migratory cells, as in other vertebrates. We conclude that the delaminating neural crest is a vertebrate synapomorphy that seems to have appeared from the beginning of their evolutionary history, before the splitting away of the hagfish lineage. BioEssays 30:167–172, 2008. © 2008 Wiley Periodicals, Inc. (shrink)

Feinberg and Mallatt, in their presentation of neurobiological naturalism, have suggested that visual consciousness was acquired by early vertebrates and inherited by a wide range of descendants, and that its neural basis has shifted to nonhomologous nervous structures during evolution. However, their evolutionary scenario of visual consciousness relies on the assumption that visual consciousness is closely linked with survival, which is not commonly accepted in current consciousness research. We suggest an alternative idea that visual consciousness is linked to a specific (...) class of agency, consequently justifying their phylogenetic claim. We also examine the implication of their phylogenetic claim: visual consciousness is homologous across vertebrates, but its neural basis is not. This apparent incongruence illustrates a general phenomenon of homology, and that the resulting hierarchical view of visual consciousness and its neural basis can be straightforwardly accommodated by neurobiological naturalism. Throughout these discussions, we aim to address the potential theoretical issues in neurobiological naturalism and refine the picture illustrated by Feinberg and Mallatt regarding phylogenetic distribution and trajectories of visual consciousness. (shrink)

Criticizes traditional deontic logic and argues in favor of a genuine logic of norms. Gives a structure analysis of the so- called practical inference and of nomic causal propositions, and provides a critical account of von Wright's practical philosophy. The work also offers critical analyses of discourse rationality and of Wittgensteien's views on philosophizing, and includes an homage to von Wright. Of interest to readers in philosophical logic, practical philosophy, sociology of institutions, legal philosophy, and theory democracy. Annotation copyrighted by (...) Book News, Inc., Portland, OR. (shrink)

Georges Kalinowski und G. H. von Wright haben die Epoche der deontischen Logik eingeleitet. Heute geht es darum, eine neue Basis für eine echte Normenlogik zu schaffen. Ausgangspunkt ist die informationstheoretisch fundierte Handlungstheorie.

This volume contains papers in which Hans Kelsen addresses a number of philosophical issues that are crucial to his defense of the pure theory of law. Although it includes some papers appearing in English for the first time, this collection differs little in scope or substance from an earlier one, What is Justice? Kelsen’s legal theory has raised the ire of critics because they believe it separates far too sharply law from ethics. In these papers, especially those written in recent (...) years, Kelsen contends that the separation he proposes does not eliminate the possibility of criticizing the law on moral grounds; but, since there is often no agreement on moral beliefs or any means of establishing their correctness, it is often necessary to support or validate a legal system on a nonmoral basis. Thus, many of these papers deal with Kelsen’s concept of a norm and the means by which the basic norm, the one which validates all others, can be validated. Kelsen’s much criticized contention that the basic norm can be validated by a principle of minimum effectiveness is stated in a number of papers; these various statements may help to clarify the nature of the validation that he believes to be sufficient. Moral philosophers, who have generally ignored Kelsen’s work, will discover that he has much to say on moral relativism and natural law. Kelsen’s belief in the relativity of moral value, a belief he held to be quite different from the denial of any values, is used to support both his rejection of natural law and his contention that a valid legal order need not be in accord with any particular moral order. Along with papers dealing with the validation of norms and moral relativism, there are papers dealing with causality and accountability, God and the State, and the principle of retribution. There is a brief, helpful introduction by Ota Weinberger.—M.G. (shrink)

Changes in healthcare financing increasingly rely upon patient cost-sharing to control escalating healthcare expenditures. These changes raise new challenges for physicians that are different from those that arose either under managed care or traditional indemnity insurance. Historically, there have been two distinct bases for arguing that physicians should not consider costs in their clinical decisions—an “aspirational ethic” that exhorts physicians to treat all patients the same regardless of their ability to pay, and an “agency ethic” that calls on physicians to (...) be trustworthy advisors to their patients. In the setting of greater patient cost-sharing, physicians' aspiration and agency roles increasingly conflict. Satisfactorily navigating the new terrain of consumer-driven healthcare requires physicians to consider these two roles and how they can best be reconciled so as to maximize quality of care while respecting the heterogeneity of patients' financial resources and willingness to pay. (shrink)

The essays in this book offer an in-depth exploration of value theory. Portions examine the theoretical foundations of values and valuation exploring the rational groundwork for judgments. Other aspects, appealing to value distinctions of inherent, intrinsic, and instrumental, bring to light matters of aesthetic, social political, ethical, and ontological issues.

Plutarch, in his work,_ Peri __Deisidaimon_ia_ __,_ presents a striking portrayal of superstition in the First Century. The Philosopher who also served for decades as a priest of Apollo portrays the pernicious effects of some supposed religious practices as worse than the outcome of atheism. His position constitutes a forceful explanation to ostensibly controversial socio-religious behaviours. This article discusses some of the priest’s concerns as well as his rebuff of religious attitudes that are borne out of what he describes as (...) misrepresentation of the gods or superstition. Plutarch’s essay is seen as illustrating a reason for a socio-religious situation in Africa, a continent that shares a similar religious background with the world of the writer. Specifically, with the example of the hard fight against street begging in some parts of Nigeria, the article shows how social reform programmes could fail when effects of traditional African beliefs and cultural practices remain potent. __. (shrink)

This book challenges common historical misperceptions of both the history of the sciences in early modern France and the history of the French Enlightenment. Tracing the complex historical relationship between them, this reinterpretation critiques the view that the sciences were always politically neutral and that the philosophes were proto-republican. By reexamining the moral, political, and social ideas of those who defended the ascendency of the sciences, this book demonstrates the evolution of political views, in particular with the marquis de Condorcet, (...) from a commitment to absolute monarchy to revolutionary republicanism. (shrink)

This article is an attempt to clarify a confusion in the brain death literature between logical sufficiency/necessity and natural sufficiency/necessity. We focus on arguments that draw conclusions regarding empirical matters of fact from conceptual or ontological definitions. Specifically, we critically analyze arguments by Tom Tomlinson and Michael B. Green and Daniel Wikler. which, respectively, confuse logical and natural sufficiency and logical and natural necessity. Our own conclusion is that it is especially important in discussing the brain death issue to observe (...) the distinction between logical and natural sufficiency/necessity in a strict fashion. (shrink)