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)

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.

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)

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)

Reviewer gives a survey of the new phylogenetic theory of language recently published by Prof. Dr. G. Révész, founder and director of the Laboratory for experimental psychology of the University of Amsterdam ). The starting-point of the theory is the conception of "contact", defined by the author as the innate trend to be together or to co-operate, common to all socially living beings. This "theory of contact" is developed by the author in different directions and gives rise to the distinction (...) 1. of three degrees of communication: cry , call and word , 2. of three periods in the development of language: a pre-phase , a primevalphase and a final phase and 3. of three main functions of language: impelling , indication and interrogation , and leads to the conclusion that most probably the oldest form of human intercourse was restricted to the function of impelling . Prof. R. lays great stress on the in his opinion unsurmountable barrier between human and animal forms of communication. (shrink)

This critical notice discusses five main themes of Williams's collection: (1) The “morality system” and blame: our ethical thought both misconceives and overemphasizes the practice of blaming. (2) The theorist’s predicament: how can a theorist of human practice coherently relate her theory to her own practice? (3) Psychological realism: a central constraint on a defensible ethical outlook is that it takes account of us as we are. (4) Culture and explanation: there is no culturally neutral form of social explanation. (5) (...) Objectivity and realism: ethical objectivity should be interpreted in a practical vein, dissociating it from realism. (shrink)

Originally published in 1931, Muirhead’s study aims to challenge the view that Locke’s empiricism is the main philosophical thought to come out of England, suggesting that the Platonic tradition is much more prominent. These views are explored in detail in this text as well as touching on its development in the nineteenth century from Coleridge to Bradley and discussions on Transcendentalism in the United States. This title will be of interest to students of Philosophy.

Quasi-probability distribution functions fj WW, fj MM for quantum spin-j systems are derived based on the Wigner-Weyl, Margenau-Hill approaches. A probability distribution fj sph which is nonzero only on the surface of the sphere of radius √j(j+1) is obtained by expressing the characteristic function in terms of the spherical moments. It is shown that the Wigner-Weyl distribution function turns out to be a distribution over the sphere in the classical limit.

Human values, by their very nature, are situational and culture specific. It would, therefore, be unrealistic to think that we can 'transplant' or 'transport' values from one country or culture to another with ease. This text identifies suitable human values which cut across national boundaries and cultures to facilitate organisations wishing to advance their businesses and strategic management capabilities towards a functionally humane organisation (FHO).

G Reddiford; Sociology, Psychology and the Study of Education, Journal of Philosophy of Education, Volume 3, Issue 1, 30 May 2006, Pages 81–103, https://doi.org.

Containing selected papers on the fundamentals and applications of Complexity Science, this multi-disciplinary book presents new approaches for resolving complex issues that cannot be resolved using conventional mathematical or software models. Complex Systems problems can occur in a variety of areas such as physical sciences and engineering, the economy, the environment, humanities and social and political sciences. Complexity Science problems, the science of open systems consisting of large numbers of diverse components engaged in rich interaction, can occur in a variety (...) of areas such as physical sciences and engineering, the economy, the environment, humanities and social and political sciences. The global behaviour of these systems emerges from the interaction of constituent components and is unpredictable but not random. The key attribute of Complex Systems is the ability to self-organise and adapt to unpredictable changes in their environment. (shrink)