Frank E. Zachos offers a comprehensive review of one of today's most important and contentious issues in biology: the species problem. After setting the stage with key background information on the topic, the book provides a brief history of species concepts from antiquity to the Modern Synthesis, followed by a discussion of the ontological status of species with a focus on the individuality thesis and potential means of reconciling it with other philosophical approaches. More than 30 different species (...) concepts found in the literature are presented in an annotated list, and the most important ones, including the Biological, Genetic, Evolutionary and different versions of the Phylogenetic Species Concept, are discussed in more detail. Specific questions addressed include the problem of asexual and prokaryotic species, intraspecific categories like subspecies and Evolutionarily Significant Units, and a potential solution to the species problem based on a hierarchical approach that distinguishes between ontological and operational species concepts. A full chapter is dedicated to the challenge of delimiting species by means of a discrete taxonomy in a continuous world of inherently fuzzy boundaries. Further, the book outlines the practical ramifications for ecology and evolutionary biology of how we define the species category, highlighting the danger of an apples and oranges problem if what we subsume under the same name ("species") is in actuality a variety of different entities. A succinct summary chapter, glossary and annotated list of references round out the coverage, making the book essential reading for all biologists looking for an accessible introduction to the historical, philosophical and practical dimensions of the species problem. (shrink)

Species, or ‘the Species Problem’, is a topic in science, in the philosophy of science, and in general philosophy. There is not one, but many, species problems, and these are dealt with in this volume. Species are often thought of as units of biology, to be used in ecology, conservation, classification, and theory. The chapters in this book present opposing views on the current philosophical and conceptual issues of the Species Problem in biology. -/- Divided into four sections Theories and (...) Concepts, Practice and Methods, Ranks, Trees and Names, and Metaphysics and Epistemologies, the book is authored by systematists, philosophers, historians and working biologists, many leaders in their fields. Topics include Essentialism and individuals, speciation modes, theory and the species rank, nomenclature and diagnosis, scale of species, and ecology, conservation, and species. -/- Species Problems and Beyond aims to clarify the contemporary issues of the Species Problem. It is ideal for use in upper-level seminars and courses in Evolutionary Biology, Philosophy of Science, Philosophy of Biology, Systematics and Taxonomy, and Phylogenetics/Cladistics, and for any scholar in these fields. (shrink)

Lists of species underpin many fields of human endeavour, but there are currently no universally accepted principles for deciding which biological species should be accepted when there are alternative taxonomic treatments (and, by extension, which scientific names should be applied to those species). As improvements in information technology make it easier to communicate, access, and aggregate biodiversity information, there is a need for a framework that helps taxonomists and the users of taxonomy decide which taxa and names should be used (...) by society whilst continuing to encourage taxonomic research that leads to new species discoveries, new knowledge of species relationships, and the refinement of existing species concepts. Here, we present 10 principles that can underpin such a governance framework, namely (i) the species list must be based on science and free from nontaxonomic considerations and interference, (ii) governance of the species list must aim for community support and use, (iii) all decisions about list composition must be transparent, (iv) the governance of validated lists of species is separate from the governance of the names of taxa, (v) governance of lists of accepted species must not constrain academic freedom, (vi) the set of criteria considered sufficient to recognise species boundaries may appropriately vary between different taxonomic groups but should be consistent when possible, (vii) a global list must balance conflicting needs for currency and stability by having archived versions, (viii) contributors need appropriate recognition, (ix) list content should be traceable, and (x) a global listing process needs both to encompass global diversity and to accommodate local knowledge of that diversity. We conclude by outlining issues that must be resolved if such a system of taxonomic list governance and a unified list of accepted scientific names generated are to be universally adopted. (shrink)

We give a brief introduction to the Bayesian approach to natural language argumentation, mainly oriented to readers more familiar with classical logic. Subsequently, we summarize the gist of each of the chapters so as to provide readers with an overview of the book&s content.

We provide a brief introduction to this special issue on social dynamics and collective rationality, and summarize the gist of the papers collected therein.

This paper discusses an example of social policy argumentation from an opinion of the 2007 majority among the German National Ethics Council. It is employed to problematize argument reconstruction with respect to the Informal Logic quality criteria relevance, sufficiency, acceptability. The main thesis is conditional and rather weak: If the RSA criteria are sub-stitutes for the notion of soundness, then—next to premise-truth and validity—they also substitute recon-structive charity.

According to German theorists historicism was the result of a dynamization of the static world-view of the Enlightenment. According to contemporary Anglo-Saxon theorists historicism resulted from a de-rhetoricization of Enlightenment historical writing. It is argued that, contrary to appearances, these two views do not exclude but support each other. This can be explained if the account of change implicit in Enlightenment historical writing is compared to that suggested by historicism and, more specifically, by the historicist notion of the "historical idea." (...) Aspects of the contemporary debate about the nature and the task of historical writing can be clarified from the perspective of the differences between Enlightenment and historicist historical writing. (shrink)

The aim of this paper is to argue that update semantics is a natural framework for contextually restricted quantification, and to illustrate its use in the analysis of anaphoric definite descriptions and certain other anaphoric terms.

Cette pièce majeure de Wedekind met en scène des adolescents confrontés à un corps qui se métamorphose et à l'éveil du désir sexuel. Le dramaturge allemand n'hésite pas à attaquer l'hypocrisie morale de son époque, qui préfère feindre d'ignorer ce bouleversement et induit chez les jeunes gens des comportements déviants ou dangereux.

One-sided classifiers are computable devices which read the characteristic function of a set and output a sequence of guesses which converges to 1 iff the set on the input belongs to the gven class. Such a classifier istwo-sided if the sequence of its output in addition converges to 0 on setsnot belonging to the class. The present work obtains the below mentionedresults for one-sided classes (= Σ0 2 classes) with respect to four areas: Turing complexity, 1-reductions, index sets and measure.There (...) are one-sided classes which are not two-sided. This can have two reasons: (1) the class has only high Turing complexity. Then there are some oracles which allow to construct noncomputale two-sided classifiers. (2) The class is difficult because of some topological constraints and then there are also no nonrecursive two-sided classifiers. For case (1), several results are obtainedto localize the Turing complexity of certain types of one-sided classes.The concepts of 1-reduction, 1-completeness and simple sets is transferred to one-sided classes: There are 1-complete classes and simple classes, but no class is at the same time 1-complete nd simple.The one-sided classes have a natural numbering. Most of the common index sets relative to this numbering have the high complexity Π1 1: the index set of the class {0,1}∞, the index set of the equality problem and the index set of all two-sided classes. On the other side the index set of the empty class has complexity Π0 2; Π0 2 and Σ0 2 are the least complexities any nontrivial index set can have.Lusin showed that any one-sided class is measurable. Concerning the effectiveness of this measure, it is shown that a one-sided class has recursive measure 0 if it has measure 0, but that thre are one-sided classes having measure 1 without having measure 1 effectively. The measure of a two-sided class can be computed in the limit. (shrink)

In this volume, fourteen scholars, many of them contemporaries of Professor Frank, engage with his legacy with important and seminal works which take some of ...

Epigenetic information is encoded by DNA methylation and by covalent modifications of histone tails. While defined epigenetic modification patterns have been frequently correlated with particular states of gene activity, very little is known about the integration level of epigenetic signals. Recent experiments have resulted in the characterization of several epigenetic adaptors that mediate interactions between distinct modifications. These adaptors include methyl‐DNA binding proteins, chromatin remodelling enzymes and siRNAs. Complex interactions between epigenetic modifiers and adaptors provide the foundation for the stability (...) of epigenetic inheritance. In addition, they also provide an explanation for the long‐range effects of epigenetic mechanisms. We propose that a major aspect of epigenetic regulation lies in the modification of chromosome architecture and that local changes in gene expression would be secondary consequences. This view is consistent with many results from recent genomic analyses. BioEssays 25:792–797, 2003. © 2003 Wiley Periodicals, Inc. (shrink)

There are signs of both secularization and religionization in the world today. Consistent with the modernization-secularization thesis, structural factors such as increasing economic security, societal complexity, and information flow are broadly associated with greater personal autonomy, worldview individualization, and erosion of some religious forms. At the same time, ‘counter-secular’ reassertions or transformations of religion have arisen for psychological, cultural, and political reasons. Amid these broad developments, active or public forms of atheism have also emerged, particularly in Europe and the Anglophone (...) world. Self-conscious, assertive atheism and other forms of philosophical or ideological secularism have both intended and unintended effects in the processes of secularization and religionization. But a quieter and potentially more pervasive result of all these forces may be greater worldview diversity and individualization across the secular-religious spectrum. (shrink)

(2005). Translator's Introduction to The Incompleteness of Each Tradition: Toward an Ethic of Complexity. World Futures: Vol. 61, No. 4, pp. 287-290.

An infinite field with only countably many pure types is algebraically closed.

This article addresses the extent and ways in which gender inequality in the newspaper coverage of arts and culture has changed in France, Germany, the Netherlands, and the United States, 1955-2005. Through a quantitative content analysis, we mapped all articles that appeared in two elite newspapers in each country in four sample years 1955, 1975, 1995, and 2005. First, despite increasing women’s employment in arts and culture and a quantitative feminization of journalism, elite newspaper coverage of women in arts and (...) culture has hardly changed, making up about 20-25 percent consistently over the last 50 years. Second, our results show surprisingly few cross-national differences in the amount of the newspaper coverage devoted to women in arts and culture. Third, although women are underrepresented in the coverage of all artistic genres, there is some evidence of horizontal sex segregation—particularly in architecture and modern dance and fashion —as well as vertical sex segregation—in that attention to women has increased in “highbrow” genres that have declined in status. Finally, as the status of an actor type increases from laymen to artistic directors, the proportion of women decreases in newspaper attention to arts and culture. (shrink)