We consider the evidence that RA†, the vitamin A metabolite, is involved in three fundamental aspects of the development of the CNS: (1) the stimulation of axon outgrowth in particular neuronal sub‐types; (2) the migration of the neural crest; and (3) the specification of rostrocaudal position in the developing CNS (forebrain, midbrain, hindbrain, spinal cord). The evidence we discuss involves RA‐induction of neurites in cell cultures and explants of neural tissue; the teratological effects of RA on the embryo's nervous system; (...) the observation that RA can be detected endogenously in the spinal cord; and the fact that the receptors and binding proteins for RA are expressed in precise domains and neuronal cell types within the nervous system. (shrink)

Cognitive science has always included multiple methodologies and theoretical commitments. The philosophy of cognitive science should embrace, or at least acknowledge, this diversity. Bechtel’s (2009a) proposed philosophy of cognitive science, however, applies only to representationalist and mechanist cognitive science, ignoring the substantial minority of dynamically oriented cognitive scientists. As an example of nonrepresentational, dynamical cognitive science, we describe strong anticipation as a model for circadian systems (Stepp & Turvey, 2009). We then propose a philosophy of science appropriate to nonrepresentational, dynamical (...) cognitive science. (shrink)

This book argues that the institutions of law, and the structures of legal thought, are to be understood by reference to a moral ideal of freedom or independence from the power of others. The moral value and justificatory force of law are not contingent upon circumstance, but intrinsic to its character. Doctrinal legal arguments are shaped by rival conceptions of the conditions for realization of the idea of law. In making these claims, the author rejects the viewpoint of much contemporary (...) legal theory, and seeks to move jurisprudence closer to an older tradition of philosophical reflection upon law, exemplified by Hobbes and Kant. Modern analytical jurisprudence has tended to view these older philosophies as confused precisely in so far as they equate an understanding of law's nature with a revelation of its moral basis. According to most contemporary legal theorists, the understanding and analysis of existing institutions is quite distinct from any enterprise of moral reflection, but the relationship between ideals and practices is much more intimate than this approach would suggest. Some institutions can be properly understood only when they are viewed as imperfect attempts to realize moral or political ideals; and some ideals can be conceived only by reference to their expression in institutions. (shrink)

We attempt in this paper to define a new field of study for philosophy: philosophy of management. We briefly speculate why the interest some managers and management writers take in philosophy has been so little reciprocated and why it needs to be. Then we suggest the scope of this new branch of philosophy and how it relates to and overlaps with other branches. We summarise some key matters philosophers of management should concern themselves with and pursue one in some detail. (...) We conclude with an invitation. (shrink)

This book uses the philosophy of Wittgenstein as a perspective from which to challenge the idea of a critical social theory, represented pre-eminently by Giddens, Habermas and Bhaskar.

Talk of “essences” has, since Saul Kripke and Hilary Putnam, gained significant currency in contemporary philosophy. It is no longer unfashionable to talk about the essence of this or that (natural) kind, and as such we now find a variety of brands of essentialism on the market including B.D. Ellis’s scientific essentialism, David Oderberg’s real Essentialism, Alexander Bird’s dispositional essentialism, and the contemporary essentialism of Kripke and Putnam. -/- Almost all these brands of essentialism share a particular gloss on Locke’s (...) famous objection to Aristotle that natural kinds are demarcated by nominal essences not real essences. Thus Oderberg claims that ‘Empiricists take [real] essences to be paradigmatically unobservable’ and that this ‘objection goes back at least to John Locke’ (Oderberg 2007: 21). Bird, presenting his dispositional essentialism, defines a notion of “being” as ‘the reverse of Locke’s definition of essence’ which he takes to be ‘the being of any thing, whereby it is what it is’ (Bird 2007: 100). Joseph LaPorte, discussing nominal and real essences, claims that ‘Kripke and Putnam seem to affirm something more substantive: that biological kinds have “real essences” in Locke’s terminology’ (LaPorte 2004: 49). Even avowed anti-essentialists such as John Dupré sanction the standard criticism of Locke that his scepticism about the knowability of real essences was ‘premature’, and claim that ‘genuine natural kinds provide the extensions of many terms of natural language, where these natural kinds are determined by true Lockean real essences’ (Dupré 1993: 22). -/- All of these essentialisms (even Dupré’s anti-essentialism) are wrong about Locke. Oderberg is wrong to claim that Locke thought that real essences were paradigmatically unobservable; Bird is wrong to think that Locke’s notion of essence is the being of anything whereby it is what it is; LaPorte is wrong to think that Kripke and Putnam are talking about Lockean real essences (although so are Kripke and Putnam); and Dupré is wrong to think that genuine natural kinds (if by genuine he means objective or mind-independent) are determined but true Lockean real essences . -/- The mistake stems from a standard, but ultimately incorrect, interpretation of Locke’s discussion of essences in An Essay Concerning Human Understanding . This mistaken interpretation (Lowe 1995, 2006, Von Leyden 1973, Wiggins 1974) takes Locke to mean, by “real essence”, the Aristotelian notion i.e. ‘the very being of anything, whereby it is what it is’ (Essay III.iii.15), and interprets his objection as epistemological: we cannot come to know what real essences are, and therefore they cannot figure in our classifications of things into kinds. -/- This paper will present and defend the following two claims: i) that Locke’s notion of “real essence” is not the Aristotelian notion, and ii) that Locke’s objection to the Aristotelian notion was not merely epistemological. The first claim can be defended by presenting and applying Vienne’s (1993) terminological revision. Vienne argues that Locke did not introduce a dichotomy between real and nominal essence, but a trichotomy between real essence, nominal essence and real constitution. This terminological revision will be employed to highlight where ambiguous uses of the phrase “real essence” have caused some serious misunderstandings of Locke’s philosophy. The second claim (steering Locke around what is the classic objection to his thesis) can be defended by presenting a novel way of splitting up Locke’s objections to the Aristotelian notion of essence. The analysis will show that Locke’s anti-essentialism is still in good shape, and of contemporary significance. (shrink)

Abstractα/β barrels have an ill‐defined origin. Evidence exists which favours their divergent evolution from a common ancestral barrel and convergent evolution to a stable fold. However, recent sequence and structural information for the flavin oxidase/dehydrogenase family of barrel enzymes indicate that sub‐families of α/β barrels have evolved divergently. The modular fusion of barrel domains with core structures from other gene families has also contributed to the evolution of related but catalytically distinct enzyme molecules within each sub‐family of the flavin oxidases/dehydrogenases. (...) An analysis of the structures and sequences of the flavin oxidases/dehydrogenases has now enabled studies focusing on the evolutionary origins and modular assembly of this important family of proteins to be initiated. (shrink)

The word 'athletics' is derived from the Greek verb 'to struggle for a prize'. After reading this book, no one will see the Olympics as a graceful display of Greek beauty again, but as war by other means. Nigel Spivey paints a portrait of the Greek Olympics as they really were - fierce contests between bitter rivals, in which victors won kudos and rewards, and losers faced scorn and even assault. Victory was almost worth dying for, and a number (...) of athletes did just that. Many more resorted to cheating and bribery. Contested always bitterly and often bloodily, the ancient Olympics were not an idealistic celebration of unity, but a clash of military powers in an arena not far removed from the battlefield. (shrink)

World Ethics: The New Agenda identifies different ways of thinking about ethics, and of thinking ethically about international and global relations. It also considers several theories of world ethics in the context of issues such as war and peace, world poverty, the environment and the United Nations. The discussion is grounded in an awareness of the post-9/11 world in which we live and offers a more detailed exploration of the idea of global citizenship and a global or cosmopolitan ethic.

This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and (...) made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

Theories of superior collicular and hippocampal function have remarkable similarities. Both structures have been repeatedly implicated in spatial and attentional behaviour and in inhibitory control of locomotion. Moreover, they share certain electrophysiological properties in their single unit responses and in the synchronous appearance and disappearance of slow wave activity. Both are phylogenetically old and the colliculus projects strongly to brainstem nuclei instrumental in the generation of theta rhythm in the hippocampal EECOn the other hand, close inspection of behavioural and electrophysiological (...) data reveals disparities. In particular, hippocampal processing mainly concerns stimulus ambiguity, contextual significance, and spatial relations or other subtle, higher order characteristics. This requires the use of largely preprocessed sensory information and mediation of poststimulus investigation. Although collicular activity must also be integrated with that of “higher” centres, its primary role in attention is more “peripheral” and specific in controlling orienting/localisation via eye and body movements toward egocentrically labelled spatial positions. In addition, the colliculus may exert a nonspecific influence in alerting higher centres to the imminence of information potentially worthy of focal attention. Nevertheless, it is noteworthy that collicular and hippocampal lesions produce deficits on similar tasks, although the type of deficit is usually different in each case. Functional overlap between hippocampus and colliculus is virtually certain vis-à-vis stimulus sampling, for example in the acquisition of information via vibrissal movements and visual scanning. In addition, insofar as stimulus significance is a factor in collicular orienting mechanisms, the hippocampus — cingulate – cortex — colliculus pathway may play a significant role, modulating collicular responsiveness and thus ensuring an attentional strategy appropriate to current requirements. A tentative “reciprocal loop” model is proposed which bridges physiological and behavioural levels of analysis and which would account for the observed degree and nature of functional overlap between the superior colliculus and hippocampus. (shrink)

This paper examines the ethical dimensions of the closure process of an English large long-stay institution for people with learning difficulties during the last quarter of the twentieth century. It does this primarily through an analysis of oral historical interview data stemming from those managers who implemented rundown. The paper illustrates the ways in which their testimonies indicate the presence of a morally infused dominant rhetoric, which was based upon the therapeutic benefits of closure, informed by the ideas of normalisation (...) and social role valorisation. However, the paper argues that this principled managerial perspective had unfortunate ethical consequences, in that it under-acknowledged, marginalised and discredited staff viewpoints which raised pertinent issues relating to the downsizing of this particular hospital. (shrink)

What can computers do in principle? What are their inherent theoretical limitations? These are questions to which computer scientists must address themselves. The theoretical framework which enables such questions to be answered has been developed over the last fifty years from the idea of a computable function: intuitively a function whose values can be calculated in an effective or automatic way. This book is an introduction to computability theory (or recursion theory as it is traditionally known to mathematicians). Dr Cutland (...) begins with a mathematical characterisation of computable functions using a simple idealised computer (a register machine); after some comparison with other characterisations, he develops the mathematical theory, including a full discussion of non-computability and undecidability, and the theory of recursive and recursively enumerable sets. The later chapters provide an introduction to more advanced topics such as Gildel's incompleteness theorem, degrees of unsolvability, the Recursion theorems and the theory of complexity of computation. Computability is thus a branch of mathematics which is of relevance also to computer scientists and philosophers. Mathematics students with no prior knowledge of the subject and computer science students who wish to supplement their practical expertise with some theoretical background will find this book of use and interest. (shrink)

In the recent and not-too-distant past many of our parents, grandparents and forbears believed that a person’s skin colour and physiognomy, gender, or sexuality licensed them being regarded and treated in ways that are now widely recognised as blatantly unjust, disrespectful, cruel and brutal. But the nineteenth, twentieth, and twenty-first centuries have hosted a series of radical changes in attitudes, beliefs, behaviour and institutionalised practices with regard to the fundamental moral equality of what were once seen as different “kinds of (...) people.” This paper explores the social structure of such “moral revolutions,” via the Wittgensteinian- and Kuhnian- inspired concepts moral perception, moral certainty, normal morality, and moral paradigm. (shrink)

As the 20th century began, few effective therapies existed. This soon changed with major therapeutic discoveries turning the century into what has been called the golden age of therapeutics.1 The emphasis of most of these developments was on medicines for common disorders as they presented the greatest need. However, it also allowed pharmaceutical manufacturers to produce blockbuster drugs that provided a large return on investment. Rare disorders were overlooked because most are genetic in origin and scientific knowledge was lacking, making (...) it difficult to find treatments. The first genetic disorder with a therapy was phenylketonuria. The biochemist who proposed the first successful treatment in the 1950s was actively discouraged as phenylketonuria was genetic and ‘incurable’.2 Another reason was an absence of incentives to invest in developing medicines for which the return was limited, given the small numbers of potential patients. This changed from 1983 as several countries began introducing orphan drug policies, with Canada being a notable exception. As the millennium changed, some drugs for rare disorders were available, but the sequencing of the human genome in the early 2000s provided scientific knowledge to develop many more. The new therapies are often costly because they require millions, even billions, of dollars and years to develop, test and satisfy regulatory standards. …. (shrink)

Fire is a force that links everyday human activities to some of the most powerful energetic movements of the Earth. Drawing together the energy-centred social theory of Georges Bataille, the fire-centred environmental history of Stephen Pyne, and the work of a number of ‘pyrotechnology’ scholars, the paper proposes that the generalized study of combustion is a key to contextualizing human energetic practices within a broader ‘economy’ of terrestrial and cosmic energy flows. We examine the relatively recent turn towards fossil-fuelled ‘internal (...) combustion’ in the light of a much longer human history of ‘broadcast’ burning of vegetation and of artisanal pyrotechnologies – the use of heat to transform diverse materials. A combustion-centred analysis, it is argued, brings human collective life into closer contact with the geochemical and geologic conditions of earthly existence, while also pointing to the significance of explorative, experimental and even playful dispositions towards energy and matter. (shrink)

For at least two centuries most social thought has taken the earth to be the stable platform upon which dynamic social processes play out. Both climate change and the Anthropocene thesis – with their enfolding of dramatic geologic change into the space-time of social life – are now provoking social thinkers into closer engagement with earth science. After revisiting the decisive influence of the late 18th-century notion of geological formations on the idea of social formations, this introductory article turns to (...) more recent and more explicit attempts to open up the categories of social thought to a deeper understanding of earth processes. This includes attempts to consider how social and political agency is both constrained and made possible by the forces of the earth itself. It also involves efforts to think beyond existing dependencies of social worlds upon particular geological strata and to imagine alternative ‘geosocial’ futures. (shrink)

Theology is based on God's true and unchanging Word, but does it supply an unwavering foundation for spiritual certainties? Brush contends that it does not, because, like science, theology is a human discipline and subject to our limitations of knowledge, interpretation, and objectivity. In part one, Brush unpacks this contention, showing how Christians both past and present have arrived at conclusions that actually run counter to biblical teaching, and how these interpretive viewpoints have changed over time. In part two, he (...) makes the case that flawed theological positions have resulted in views that needlessly conflict with science, and that these clashes can be resolved with more accurate formulations. Brush evenly evaluates questions including the age of the earth, the origin of life, and the end of time."--Publisher. (shrink)

Alice Crary claims that “the standard view of the bearing of Wittgenstein's philosophy on ethics” is dominated by “inviolability interpretations”, which often underlie conservative readings of Wittgenstein. Crary says that such interpretations are “especially marked in connection with On Certainty”, where Wittgenstein is represented as holding that “our linguistic practices are immune to rational criticism, or inviolable”. Crary's own conception of the bearing of Wittgenstein's philosophy on ethics, which I call the “intrinsically-ethical reading”, derives from the influential New Wittgenstein school (...) of exegesis, and is also espoused by James Edwards, Cora Diamond, and Stephen Mulhall. To my eyes, intrinsically-ethical readings present a peculiar picture of ethics, which I endeavour to expose in Part I of the paper. In Part II I present a reading of On Certainty that Crary would call an “inviolability interpretation”, defend it against New Wittgensteinian critiques, and show that this kind of reading has nothing to do with ethical or political conservatism. I go on to show how Wittgenstein's observations on the manner in which we can neither question nor affirm certain states of affairs that are fundamental to our epistemic practices can be fruitfully extended to ethics. Doing so sheds light on the phenomenon that I call “basic moral certainty”, which constitutes the foundation of our ethical practices, and the scaffolding or framework of moral perception, inquiry, and judgement. The nature and significance of basic moral certainty will be illustrated through consideration of the strangeness of philosophers' attempts at explaining the wrongness of killing. (shrink)

Introduction -- Self and other : life and death -- Education in Hegel in the history of philosophy -- Fossil fuel culture -- Education in Hegel in Derrida -- Education in Hegel in Levinas -- I philosophy.

Can theories of mental imagery, conscious mental contents, developed within cognitive science throw light on the obscure (but culturally very significant) concept of imagination? Three extant views of mental imagery are considered: quasi‐pictorial, description, and perceptual activity theories. The first two face serious theoretical and empirical difficulties. The third is (for historically contingent reasons) little known, theoretically underdeveloped, and empirically untried, but has real explanatory potential. It rejects the “traditional” symbolic computational view of mental contents, but is compatible with recentsituated (...) cognition and active visionapproaches in robotics. This theory is developed and elucidated. Three related key aspects of imagination (non‐discursiveness, creativity, and seeing as) raise difficulties for the other theories. Perceptual activity theory presents imagery as non‐discursive and relates it closely to seeing as. It is thus well placed to be the basis for a general theory of imagination and its role in creative thought. (shrink)

Modern western political thought revolves around globality, focusing on the partitioning and the connecting up of the earth’s surface. But climate change and the Anthropocene thesis raise pressing questions about human interchange with the geological and temporal depths of the earth. Drawing on contemporary earth science and the geophilosophy of Deleuze and Guattari, this article explores how geological strata are emerging as provocations for political issue formation. The first section reviews the emergence – and eventual turn away from – concern (...) with ‘revolutions of the earth’ during the 18th- and 19th-century discovery of ‘geohistory’. The second section looks at the subterranean world both as an object of ‘downward’ looking territorial imperatives and as the ultimate power source of all socio-political life. The third section weighs up the prospects of ‘earth system governance’. The paper concludes with some general thoughts about the possibilities of ‘negotiating strata’ in more generative and judicious ways. (shrink)

Slavery seems to us to be a paradigm of a morally wrong institutionalized practice. And yet for most of its millennia-long historical existence it was typically accepted as a natural, necessary, and inevitable feature of the social world. This widespread normative consensus was only challenged toward the end of the eighteenth century. Then, within a hundred years of the emergence of radical moral criticism of slavery, the existing practices had been dismantled and the institution itself “abolished.” How do we explain (...) such a “profound transformation in moral perception” (Davis 1975)? It may seem obvious that the moral agency and character of the leaders and activists of the abolition movement, their supporters, and their governmental representatives were the primary motors of change.That is to say, the various actors involved came to see, recognize, or acknowledge the true (morally evil) nature of slavery and were thereby motivated to act against it. This “commonsense,” “moral explanation” is endorsed by most of the philosophers who have reflected on the morality of slavery. But despite the intuitiveness of thinking that it was the moral agency of the actors, pitted against the evil and injustice of slavery, that brought about the latter’s downfall, I will endeavor to show that such thinking is inadequate both to the facts and to the explanatory desiderata. I contend that it was not ignor ance of the supposedly inherent moral status of slavery that maintained people’s complicity with it, but practical barriers to them conceiving it dispensable. (shrink)

This book offers a philosophical study of the teacher.

The molecular genetic age can be said to have begun with the letter in Nature in 1953 by Watson and Crick, describing the helical structure of DNA. Some outstanding scientific work preceded that discovery, including especially the recognition by Chargaff of base-pair complementarity, but no discovery quite captured the imagination of the biomedical world as a few understated words by Watson and Crick in their famous one-page paper: "It has not escaped our notice that the specific pairing we have postulated (...) immediately suggests a possible copying mechanism for the genetic material". The manner in which genetic material was passed on from generation to generation had been decoded.That discovery was... (shrink)

The decades between 1770 and 1840 are rich in exotic accounts of the ruin-strewn landscapes of Ethiopia, Egypt, India, and Mexico. Yet it is a field which has been neglected by scholars and which - unjustifiably - remains outside the literary canon. In this pioneering book, Nigel Leask studies the Romantic obsession with these 'antique lands', drawing generously on a wide range of eighteenth- and nineteenth-century travel books, as well as on recent scholarship in literature, history, geography, and anthropology. (...) Viewing the texts primarily as literary works rather than 'transparent' adventure stories or documentary sources, he sets out to challenge the tendency in modern academic work to overemphasize the authoritative character of colonial discourse. Instead, he addresses the relationship between narrative, aesthetics, and colonialism through the unstable discourse of antiquarianism, exploring the effects of problems of creditworthiness, and the nebulous epistemologicial claims of 'curiosity', on the contemporary status of travel writing.Attentive to the often divergent idioms of elite and popular exoticism, Curiosity and the Aesthetics of Travel Writing plots the transformation of the travelogue through the period, as the baroque particularism of curiosity was challenged by picturesque aesthetics, systematic 'geographical narrative', and the emergence of a 'transcendental self' axiomatic to Romantic culture. In so doing it offers an important reformulation of the relations between literature, aesthetics, and empire in the late Enlightenment and Romantic periods. (shrink)

This study of the implications of Gillick competence argues it is an unnecessary burden with an unethical foundation. The ethics of adolescent medical decision-making is a fraught area for medical ethics because it deals with the threshold boundaries between childhood and adulthood and Gillick adds a burden upon children and adolescent patients that is unwarranted and through which damage is done to integral human relationships. In light of Gillick, it can be seen that the context of adolescent decision-making and childhood, (...) is a neglected topic of ethical reflection. (shrink)

I Am Dynamite ignites an alternative theory of the self and will, wrapped up in a combustible assault upon scholarly convention. Asking why the real effort of constructing and living within an identity is so often overlooked, it examines the subjective experience of existing in the world, with the power to define and transform oneself. Considering the trials and triumphs of five very different modern subjects--Primo Levi, Ben Glaser, Stanley Spencer, Rachel Silberstein and Friedrich Nietzsche--Nigel Rapport asks: can consciousness (...) of being a self in the world enable control over one's life within it? Calling for a renewed appreciation of the extraordinary within us all, this richly inventive work seeks to restore knowledge to its essential practical and moral aims--aiding and informing the lives we actually live. (shrink)

In On Certainty, Wittgenstein’s reflections bring into view the phenomenon of basic certainty. He explores this phenomenon mostly in relation to our certainty with regard to empirical states of affairs. Drawing on these seminal observations and reflections, I extend the inquiry into what I call “basic moral certainty”, arguing that the latter plays the same kind of foundational role in our moral practices and judgements as basic empirical certainty does in our epistemic practices and judgements. I illustrate the nature and (...) significance of basic moral certainty via critical examination of contemporary philosophical “explanations” of the wrongness of killing. These pseudo explanations, as I show them to be, will be seen to founder in a similar manner to Moore’s “Proof” of an external world, that is, in a manner that discloses the phenomenon of basic (moral) certainty. (shrink)

This paper challenges the notion that Bitcoin is ‘trust-free’ money by highlighting the social practices, organizational structures and utopian ambitions that sustain it. At the paper's heart is the paradox that if Bitcoin succeeds in its own terms as an ideology, it will fail in practical terms as a form of money. The main reason for this is that the new currency is premised on the idea of money as a ‘thing’ that must be abstracted from social life in order (...) for it to be protected from manipulation by bank intermediaries and political authorities. The image is of a fully mechanized currency that operates over and above social life. In practice, however, the currency has generated a thriving community around its political ideals, relies on a high degree of social organization in order to be produced, has a discernible social structure, and is characterized by asymmetries of wealth and power that are not dissimilar from the mainstream financial system. Unwittingly, then, Bitcoin serves as a powerful demonstration of the relational character of money. (shrink)

The first book of its kind to study the Romantic obsession with the 'antique lands' of Ethiopia, Egypt, India, and Mexico, Curiosity and the Aesthetics of Travel Writing is an important contribution to the recent wave of interest in exotic travel writing. Drawing generously on both original texts and modern scholarship in literature, history, geography, and anthropology, it focuses on the unstable discourse of 'curiosity' to offer an important reformulation of the relations between literature, aesthetics, and colonialism in the period.

John Dewey stated that ‘[h]owever far apart philosophy and educational theory may later have become, in their beginnings they were strictly identical.' Dewey's ‘progressivism' in Democracy and Education rests on this communion. A self-reflective philosophical education by the community, about the community, for the community, would create the conditions for the advance of social justice. But new progressive ideas championing redistributive justice might appear to be in worryingly short supply. That is one reason, among many, why Philip Kitcher’s The Main (...) Enterprise of the World is to be welcomed. His rethinking about education amounts to a radical re-education of our thinking about social justice, seeking redistribution of wealth, reduction of privilege, and a redefinition of what is valuable for people and planet in regard to production, distribution, and consumption. I will summarize his book and offer critical thoughts on it relating to three themes: the relation of his proposed Deweyan Society to some current and powerful criticisms of Western rationality; his proposals for classrooms; and the extent to which its own pragmatic philosophical justifications are open to deeper philosophical and educational significance. (shrink)

Analysis of the degree of intraspecific morphological polymorphism during the evolutionary history of trilobites using an informatic approach1 provides striking evidence of a long‐suspected but previously unsubstantiated pattern: degrees of polymorphism are markedly higher in phylogenetically basal, stratigraphically early species. This unequivocal pattern prompts further exploration of the relationship between microevolutionary variance and macroevolutionary history. It demonstrates that the ‘traditional’ fossil record of skeletonized organisms can provide unique insight into questions of major evolutionary interest. BioEssays 29:1081–1084, 2007. © 2007 Wiley (...) Periodicals, Inc. (shrink)

Preservation permitting patterns of developmental evolution can be reconstructed within long extinct clades, and the rich fossil record of trilobite ontogeny and phylogeny provides an unparalleled opportunity for doing so. Furthermore, knowledge of Hox gene expression patterns among living arthropods permit inferences about possible Hox gene deployment in trilobites. The trilobite anteroposterior body plan is consistent with recent suggestions that basal euarthropods had a relatively low degree of tagmosis among cephalic limbs, possibly related to overlapping expression domains of cephalic Hox (...) genes. Trilobite trunk segments appeared sequentially at a subterminal generative zone, and were exchanged between regions of fused and freely articulating segments during growth. Homonomous trunk segment shape and gradual size transition were apparently phylogenetically basal conditions and suggest a single trunk tagma. Several derived clades independently evolved functionally distinct tagmata within the trunk, apparently exchanging flexible segment numbers for greater regionally autonomy. The trilobite trunk chronicles how different aspects of arthropod segmentation coevolved as the degree of tagmosis increased. BioEssays 25:386–395, 2003. © 2003 Wiley Periodicals, Inc. (shrink)

The concept of “tacit knowledge” as the means by which individuals interpret the “rules” of social interaction occupies a central role in all the major contemporary theories of action and social structure. The major reference point for social theorists is Wittgenstein's celebrated discussion of rule-following in the Philosophical Investigations. Focusing on Giddens' incorporation of tacit knowledge and rules into his “theory of structuration”, I argue that Wittgenstein's later work is steadfastly set against the “latent cognitivism” inherent in the idea of (...) tacit knowledge and tacit rules. I also argue that the idea of tacit knowledge and tacit rules is either incoherent or explanatorily vacuous. (shrink)