The paper characterizes Darwin's theory, providing a synthesis of recent historical investigations in this area. Darwin's reading of Malthus led him to appreciate the importance of population pressures, and subsequently of natural selection, with the help of the wedge metaphor. But, in itself, natural selection did not furnish an adequate account of the origin of species, for which a principle of divergence was needed. Initially, Darwin attributed this to geographical isolation, but later, following his work on barnacles which underscored the (...) significance of variation, and arising from his work on botanical arithmetic, he supposed that diversity allowed more places to be occupied in a given region. So isolation was not regarded as essential. Large regions with intense competition, and with ample variation spread by blending, would facilitate speciation. The notion of place was different from niche, and it is questioned whether Darwin's views on ecology were as modern as is commonly supposed. Two notions of struggle are found in Darwin's theory; and three notions of variation. Criticisms of his theory led him to emphasize the importance of variation over a range of forms. Hence the theory was populational rather than typological. The theory required a Lamarckian notion of inheritable changes initiated by the environment as a source of variation. Also, Darwin deployed a use/habit theory; and the notion of sexual selection. Selection normally acted at the level of the individual, though kin selection was possible. Group selection was hinted at for man. Darwin's thinking (and also the exposition of his theory) was generally guided by the domestic-organism analogy, which satisfied his methodological requirement of a vera causa principle. (shrink)

SummaryEarly geological investigations in the St David's area (Pembrokeshire) are described, particularly the work of Murchison. In a reconnaissance survey in 1835, he regarded a ridge of rocks at St David's as intrusive in unfossiliferous Cambrian; and the early Survey mapping (chiefly the work of Aveline and Ramsay) was conducted on that assumption, leading to the publication of maps in 1845 and 1857. The latter represented the margins of the St David's ridge as ‘Altered Cambrian’. So the (...) supposedly intrusive ‘syenite’ was regarded as younger, and there was no Precambrian. These views were challenged by a local doctor, Henry Hicks, who developed an idea of the ex-Survey palaeontologist John Salter that the rocks of the ridge were stratified and had formed a Precambrian island, round which Cambrian sediments (now confirmed by fossil discoveries) had been deposited. Hicks subsequently proposed subdivision of his Precambrian into ‘Dimetian’, ‘Pebidian’, and (later) ‘Arvonian’, and he attempted correlations with rocks in Shropshire, North Wales, and even North America, seeking to develop the neo-Neptunist ideas of Sterry Hunt. The challenge to the Survey's work was countered in the 1880s by the Director General, Geikie, who showed that Hicks's idea of stratification in the Dimetian was mistaken. A heated controversy developed, several amateur geologists, supported by a group of Cambridge Sedgwickians, forming a coalition of ‘Archaeans’ against the Survey. Geikie was supported by Lloyd Morgan. Attention focused particularly on Ogof Lle-sugn Cave and St Non's Arch, with theory/controversy-ladenness of observations evident on both sides. Evidence from an eyewitness student record of a Geological Society meeting reveals the ‘sanit`ized’ nature of the official summary of the debate in QJGS. Field mapping early in the twentieth century by J. F. N. Green allowed a compromise consensus to be achieved, but Green's evidence for unconformity between the Cambrian and the Dimetian, obtained by excavation, can no longer be verified, and his consensual history of the area may need revision. Unconformity between the Cambrian and the Pebidian tuffs is not in doubt, however, and Precambrian at St David's is accepted. The study exhibits features of geological controversy and the British geological community in the nineteenth century. It also furnishes a further instance of the great influence of Murchison in nineteenth-century British geology and the side-effects of his controversy with Sedgwick. (shrink)

Notice is given of the discovery of two reports and an accompanying manuscript map by Andrew Ramsay, on the geology of the St David's area, Pembrokeshire. This adds to previously published information on early geological work in this important region: Ramsay's report throw some light on his attitude towards Murchison's ideas on Welsh stratigraphy. The map is the earliest known version of the Survey's St David's sheet.

The paper discusses some of the problems that may be encountered in writing the history of geology with the help of non-written sources, but also offers suggestions as to the kinds of sources that may prove useful. It considers particularly the well-known proposition of R. G. Collingwood that historical writing should involve the attempted 're-enactment of past experience', and also criticisms of such idealist philosophies of history as have been made by Michel Foucault. In considering the relative merits of these (...) two contrasting views, an example is taken from the author's own work, which illustrates the point that attempted 'thought reading', in the manner commended by Collingwood, can sometimes lead to error; thus Foucault's position gains some support. However, it is contended that so much geological knowledge is specific to particular localities that much of the primary literature may be unintelligible without at least some first-hand knowledge of those localities. Thus, an appropriate mix of written and unwritten sources is necessary for writing the history of geology. (shrink)

In this paper we examine the study of minerals from the Renaissance to the early nineteenth century in the light of the work of Michel Foucault on the history of systems of thought. In spite of a certain number of theoretical problems, Foucault's enterprise opens up to the historian of science a vast terrain for exploration. But this is the place neither for a general exegesis nor for a general criticism of his position; our aim here is the more modest (...) one of taking certain points from Foucault's study,The order of things, and seeing how far they can be extended into an area not explicitly considered in that work. (shrink)

Offers a thorough, multidisciplinary picture of the informational challenges of our media ecosystem, as well as collaborative strategies for addressing them.

INTRODUCTION Linguists who work within the tradition of transformational generative grammar tend to regard semantics as an intractable, perhaps ultimately ...

Scepticism about phenomenology typically begins with worries concerning the reliability of introspection. Such worries concern the accuracy or fidelity of descriptions of experience to the experience itself, although if pressed, such worries ultimately call into question the very idea of the experience itself. This chapter considers scepticism in both its epistemological and ontological varieties and questions whether either form genuinely engages phenomenological method, properly understood. Starting from the problematic identification of phenomenology with introspection and drawing upon considerations from the work (...) of Edmund Husserl, Jean-Paul Sartre, and Maurice Merleau-Ponty, the chapter argues that phenomenological reflection, in its concern for essential structures, is largely unaffected by worries concerning how best to capture the details of particular episodes of experience. Moreover, many of the sceptical challenges phenomenology is alleged to face presuppose an overly objective understanding of experience that phenomenology typically rejects. The chapter concludes with a consideration of the underlying motives for phenomenological scepticism. These motives have little if anything to do with worries about introspection and the like, but instead involve scepticism about the viability of transcendental philosophy. The real challenge phenomenology confronts is one of establishing the legitimacy – and authority – of its distinctive methods in opposition to naturalism. (shrink)

Colour has often been supposed to be a subjective property, a property to be analysed orretly in terms of the phenomenological aspects of human expereince. In contrast with subjectivism, an objectivist analysis of color takes color to be a property objects possess in themselves, independently of the character of human perceptual expereince. David Hilbert defends a form of objectivism that identifies color with a physical property of surfaces - their spectral reflectance. This analysis of color is shown to provide (...) a more adequate account of the features of human color vision than its subjectivist rivals. The author's account of colro also recognises that the human perceptual system provides a limited and idiosyncratic picture of the world. These limitations are shown to be consistent with a realist account of colour and to provide the necessary tools for giving an analysis of common sense knowledge of color phenomena. (shrink)

"Understanding Phenomenology" provides a guide to one of the most important schools of thought in modern philosophy. The book traces phenomenology's historical development, beginning with its founder, Edmund Husserl and his "pure" or "transcendental" phenomenology, and continuing with the later, "existential" phenomenology of Martin Heidegger, Jean-Paul Sartre, and Maurice Merleau-Ponty. The book also assesses later, critical responses to phenomenology - from Derrida to Dennett - as well as the continued significance of phenomenology for philosophy today. Written for anyone coming to (...) phenomenology for the first time, the book guides the reader through the often bewildering array of technical concepts and jargon associated with phenomenology and provides clear explanations and helpful examples to encourage and enhance engagement with the primary texts. (shrink)

In Being and Time, Heidegger explicitly defers any consideration of ourselves (Dasein) as embodied. I try to account for Heidegger's reluctance to talk about 'the body' in connection with his explication of Dasein, by arguing that doing so would be at odds with the kind of investigation his 'phenomenology of everydayness' is meant to be. That Heidegger omits discussion of the body in Being and Time might lead one to think of the human body in terms of the other categories (...) Heidegger deploys: readiness-to-hand and presence-at-hand (Being and Time) and biological organisms (Fundamental Concepts of Metaphysics). I argue that any such identification ought to be resisted, as these categories serve only to deprive our bodies of their specifically human dimension. Indeed, by surveying the failure of these categories as proper to the human body, we gain further insight into Heidegger's initial deferral: only given the existential analytic can one begin to offer a proper account of ourselves in bodily terms. (shrink)

A number of ways of taxonomizing human learning have been proposed. We examine the evidence for one such proposal, namely, that there exist independent explicit and implicit learning systems. This combines two further distinctions, (1) between learning that takes place with versus without concurrent awareness, and (2) between learning that involves the encoding of instances (or fragments) versus the induction of abstract rules or hypotheses. Implicit learning is assumed to involve unconscious rule learning. We examine the evidence for implicit learning (...) derived from subliminal learning, conditioning, artificial grammar learning, instrumental learning, and reaction times in sequence learning. We conclude that unconscious learning has not been satisfactorily established in any of these areas. The assumption that learning in some of these tasks (e.g., artificial grammar learning) is predominantly based on rule abstraction is questionable. When subjects cannot report the rules that govern stimulus selection, this is often because their knowledge consists of instances or fragments of the training stimuli rather than rules. In contrast to the distinction between conscious and unconscious learning, the distinction between instance and rule learning is a sound and meaningful way of taxonomizing human learning. We discuss various computational models of these two forms of learning. (shrink)

A number of ways of taxonomizing human learning have been proposed. We examine the evidence for one such proposal, namely, that there exist independent explicit and implicit learning systems. This combines two further distinctions, between learning that takes place with versus without concurrent awareness, and between learning that involves the encoding of instances versus the induction of abstract rules or hypotheses. Implicit learning is assumed to involve unconscious rule learning. We examine the evidence for implicit learning derived from subliminal learning, (...) conditioning, artificial grammar learning, instrumental learning, and reaction times in sequence learning. We conclude that unconscious learning has not been satisfactorily established in any of these areas. The assumption that learning in some of these tasks is predominantly based on rule abstraction is questionable. When subjects cannot report the “implicitly learned” rules that govern stimulus selection, this is often because their knowledge consists of instances or fragments of the training stimuli rather than rules. In contrast to the distinction between conscious and unconscious learning, the distinction between instance and rule learning is a sound and meaningful way of taxonomizing human learning. We discuss various computational models of these two forms of learning. (shrink)

Interpretations of Heidegger's Being and Time have tended to founder on the question of whether he is in the end a realist or an idealist, in part because of Heidegger's own rather enigmatic remarks on the subject. Many have thus depicted him as being in some way ambivalent, and so as holding on to an unstable combination of the two opposing positions. Recently, William Blattner has explained the apparent ambivalence by appealing to Kant's transcendental/empirical distinction. Although an ingenious reading of (...) Being and Time, there are a number of difficulties involved in cashing out its central claims. I argue that it fails, moreover, to capture Heidegger's avowed animus toward both realism and idealism. After criticizing Blattner's reading, I recount several features of Heidegger's ?existential analytic? of Dasein in Division I of Being and Time and connect them with his (slightly later) notion of world?entry. This latter notion provides a way of explaining how Heidegger retains a realistic conception of natural entities, while offering an overall view that cannot be identified with either realism or idealism. (shrink)

I might summarize this section by saying that the English tenses, according to this analysis, form quite a motley group. PAST, PRES and FUT serve to relate reference time to speech time, while WOULD and USED-TO behave like Priorian operators, shifting the point of evaluation away from the reference time. HAVE also shifts the point of evaluation away from the reference time, but in a more complicated way. And FUT, in contrast to PRES and PAST, is a substitution operator, putting (...) the reference time of its clause in the plate of the speech time of subordinate clauses. (shrink)

Objectives—To evaluate a departmental computer system.Design—a. Direct comparison of the time taken to use a manual system with the time taken to use a computer system for lung function evaluation, loan of equipment and production of correspondence. b. Analysis of the accuracy of data capture before and after the introduction of the computer system. c. Analysis of the comparative running costs of the manual and computer systems.Setting—Within a department of respiratory medicine serving a hospital of 1323 beds.Main Outcome Measures—a. Time (...) taken to perform functions with the assistance of computerised methods, in comparison to the manual method used alone. b. Accuracy of data capture. c. Relative running costs.Results—a. The computer system was significantly faster than the manual system for lung function evaluation, loan of equipment, and checking for overdue equipment. The production of correspondence was slightly slower with the computer. b. All outpatient episodes, but only 43 of 65 of inpatient episodes, were captured. Lung function and managerial report data were accurate using both manual and computerised methods. The manual system for equipment loans was inefficient, and use of the computer resulted in the recovery of 221 nebulisers. c. Development costs for 1988–1990 were high. Only £1200 to £1845 per year was recovered directly from staff time saved by the computer but larger savings resulted from changes in work practice. After 10 years the projected deficit is £10 000 per annum in running costs.Conclusions—In comparison with the manual methods, the computer system has shown significant advantages which provide accurate information, with significant favourable effects on working practices. In evaluating computer systems used in clinical practice it is essential to ensure that the projected work practice benefits are achieved without unacceptable costs in staff time, inaccurate data and high financial outlay. (shrink)

Johns Revelation wrestles with the question of how Jesus' followers were to live under the imperial domination of Rome. While some see John as establishing an alternative imperial system, attention to the irony with which the story is told reveals a more compelling critique of power.

Naturalism in twentieth century philosophy is founded on the rejection of ‘first philosophy’, as can be seen in Quine’s rejection of what he calls ‘cosmic exile’. Husserl’s transcendental phenomenology falls within the scope of what naturalism rejects, but I argue that the opposition between phenomenology and naturalism is less straightforward than it appears. This is so not because transcendental phenomenology does not involve a problematic form of exile, but because naturalism, in its recoil from transcendental philosophy, creates a new form (...) of exile, what I call in the paper ‘exile from within’. These different forms of exile are the result of shared epistemological aspirations, which, if set aside, leave open the possibility of phenomenology without exile. In the conclusion of the paper, I appeal to Merleau-Ponty as an example of what phenomenology without epistemology might look like. (shrink)

This philosophy of education paper describes a schizophrenic situation. A new airport is being planned in the locale of a university which is a Centre of Excellence of Education for Sustainable Development, and the university is a major partner. The airport involves an investment in jobs, resources, and will encourage further economic development. The planners have named the inter-connected developments around the airport as the ‘Aerotropolis’, including new university facilities. One could argue that the airport is a classic example of (...) the ‘Capitalocene’, where capital rushes into a new project, and environmental costs are ignored. This paper will execute a schizoanalytic critique of the process, from the perspective of a university education researcher caught up in the rushing flows of capital. Schizoanalysis has been chosen as the educational methodology to analyse this situation, because the researcher is part of what is happening, and is turned inside out by the designation in their region of the new airport. This paper is positioned in education between capital and the environment – it will describe from an insider’s perspective what it is like to be possessed, evacuated, sold out, and exploited by capital. (shrink)

Using Deleuzian theory for educational research and practice has become an increasingly popular activity. However, there are many theoretical complexities to the straightforward application of Deleuze to the educational context. For example, the ‘new materialism’ that Deleuze refers to in the 1960s takes its inspiration from Spinoza, and is an emancipatory project. Contrariwise, the ‘new materialism’ of the present moment is frequently applied to educational research and practice specifically as a way out of anthropocentric limits and enclosure. This paper explores (...) the combined forces of humanism and naturalism which are at work in Deleuze’s ‘new materialism’, as type of ‘more-than-human’ emancipation method derived from Bergson and Nietzsche; it is a mode of overcoming human limits, which fully takes into account the connections to and with the non-human world and the ecological consequences of human action. This paper will draw out the specific consequences for educational research and practice in schools of the ‘vitalist-nihilism’ we may derive from Bergson and Nietzsche to analyse matter flows as they enter, mingle with, and exit schools. (shrink)

There are serious reasons for accepting each of these propositions individually but there are apparently insurmountable difficulties with accepting all three of them simultaneously if we assume that color is a single property. 1) and 2) together seem to imply that there is some property which all organisms with color vision can see and 3) seems to imply that there can be no such property. If these implications really are valid then one or more of these propositions will have to (...) be rejected in spite of whatever reasons can be given for their apparent acceptability. Before going on to discuss possible resolutions of this apparent contradiction it is worth pointing out there our three propositions are not all of a kind. Proposition 1) is a metaphysical thesis about the ontological status of color and proposition 3) is an empirical thesis about what properties organisms with color vision are capable of detecting. If you accept 1) then 2) will appear to verge on the trivial, but if 1) is denied then the status of 2) will appear more problematic. In what follows I will have more to say about why we either should or should not accept all three of these propositions. (shrink)

The typical kind of color realism is reductive: the color properties are identified with properties specified in other terms (as ways of altering light, for instance). If no reductive analysis is available — if the colors are primitive sui generis properties — this is often taken to be a convincing argument for eliminativism. That is, realist primitivism is usually thought to be untenable. The realist preference for reductive theories of color over the last few decades is particularly striking in light (...) of the generally anti-reductionist mood of recent philosophy of mind. The parallels between the mind—body problem and the case of color are substantial enough that the difference in trajectory is surprising. While dualism and non-reductive physicalism are staples, realist primitivism is by and large a recent addition to the color literature. And it remains a minority position, although one that is perhaps gaining support. In this paper, we investigate whether it should be accepted, and conclude it should not be. (shrink)

Were Russell alive and still with us, one could apologize to him for the degree of travesty and oversimplification which the present task has involved. But his inspiration is no longer a living one and it is still a live question in the philosophy of logic whether or not it makes sense to apologize to the shades of the departed. Perhaps the author in such a predicament can take some comfort from the possibility that what he has written may interest (...) some reader in that sort of question. (shrink)