The Ozone Layer: A Philosophy of Science Perspective provides the first thorough and accessible history of stratospheric ozone, from the discovery of ozone in the nineteenth century to current investigations of the Antarctic ozone hole. Drawing directly on the extensive scientific literature, Christie uses the story of ozone as a case study for examining fundamental issues relating to the collection and evaluation of evidence, the conduct of scientific debate and the construction of scientific consensus. (...) By linking key debates in the philosophy of science to an example of real-world science, the author not only provides an excellent introduction to the philosophy of science but also challenges many of its preconceptions. This accessible book will interest students and academics concerned with the history, philosophy and sociology of science, as well as having general appeal on this topic of contemporary relevance and concern. (shrink)

The ozone layer, which is part of the atmosphere surrounding the globe, which intensively contains ozone gas, is one of the important and highly concentrated air layers in the bottom of the strateosphere and is a blue color, and it has an important impact in regulating a surface temperature.

This article compares the cases of ozone layer protection and climate change. In both cases, scientific expertise has played a comparatively important role in the policy process. The author argues that against conventional assumptions, scientific consensus is not necessary to achieve ambitious political goals. However, the architects of the Intergovernmental Panel on Climate Change operated under such assumptions. The author argues that this is problematic both from a theoretical viewpoint and from empirical evidence. Contrary to conventional assumptions, ambitious (...) political regulations in the ozone case were agreed under scientific uncertainty, whereas the negotiations on climate change were much more modest albeit based on a large scientific consensus. On the basis of a media analysis, the author shows that the creation of a climate of expectation plus pressure from leader countries is crucial for success. (shrink)

The issue of the impact of human activities on the stratospheric ozone layer emerged in the early 1970s. But international regulations to mitigate the most serious effects were not adopted until the mid-1980s. This case holds lessons for addressing more complex environmental problems. Concepts that should inform discussion include “latency,’ ‘counter-factual scenario based on the Precautionary Principle,’ ‘inter-generational burden sharing,’ and ‘estimating global costs under factual and counter-factual regulatory scenarios.’ Stringent regulations were adopted when large scientific uncertainty existed, (...) and the environmental problem would have been prevented or more rapidly mitigated, at relatively modest incremental price, but for a time delay before more rigorous Precautionary measures were implemented. Will history repeat itself in the case of climate change? (shrink)

Summary Sydney Chapman is unanimously considered to have played a founding role in modern geomagnetism and to have opened up new lines of research in geophysics generally. Nevertheless, Chapman's conviction regarding the synthesis of the explanatory mechanisms of the atmosphere has gone practically unnoticed in the historiography of geophysics. This paper examines Chapman's contribution to ionospheric physics. It aims to understand Chapman's theory of ionospheric layer formation, and particularly its link to his theory of ozone formation. It deals (...) first with the traits which characterized Chapman's personality, as a way of explaining—and even perhaps justifying— his quest for the integration and synthesis of geophysical knowledge. It then analyses Chapman's model of ionospheric layers and his suggestions regarding its use as an operational tool (without ontological connotations), before continuing with his account of the formation of the ozone layer, which seemed to constitute the missing link for understanding ionosphere layer formation. The paper concludes with Chapman's attempt to reconcile geomagnetic and radio evidence. (shrink)

This article addresses the heritage of Grotius's concept of common goods as developed in his seminal work Mare liberum. This contribution identifies the basic tenets of Grotius's thinking on the nature of common property and identifies the relevance of these ideas for the present day management of global commons, i.e., the areas and natural resources beyond the limits of national jurisdiction. Successively, the article examines the regimes for: the deep seabed, the high seas, and marine mammals; outer space, particularly the (...) moon; the two polar regions; and the atmosphere, in particular the ozone layer and the climate system. The article demonstrates how some of the original tenets of Grotius's concept of res communis – in particular the idea of inexhaustibility – can no longer be upheld and how the freedom of access to the global commons has become increasingly qualified and supplemented, if not replaced by a new law of international co-operation aimed at conservation and sustainable use of natural wealth and resources beyond the limits of national jurisdiction. The global commons function as laboratories for the testing of new principles of international law and new forms of international co-operation, which can be said to clearly build upon the Grotian heritage. (shrink)

Between 1974 and 1988, executives of DuPont, the world's largest producer of CFCs, were confronted with emerging evidence that CFCs were destroying the stratospheric ozone layer. The difficulty that executives face in such cases is that scientific knowledge develops over time and does not necessarily proceed in a straight line toward true conclusions. At the beginning of a new field of research, there is much uncertainty and disagreement among the experts. The solution of the ozone problem required (...) a remarkable cooperation among science, business, and international governments. After looking at the role of DuPont executives in this drama, and the difficulties facing any executive dealing with uncertain science, the paper turns to an evaluation of the field of Business Ethics to see what light it might throw on this and analogous problems. Finally, the paper offers specific suggestions in terms of principles in dealing with uncertain science, and concludes that the course of action that DuPont followed, including some mistakes, can serve as a model for analogous crises. (shrink)

The number and the scale of transboundary public health concerns are increasing. Infectious and non-communicable diseases, international trade in tobacco, alcohol, and other dangerous products as well as the control of the safety of health services, pharmaceuticals, and food are merely a few examples of contemporary transnationalization of health concerns. The rapid development and diffusion of scientific and technological developments across national borders are creating new realms of international health concern, such as aspects of biomedical science, including human reproductive cloning, (...) germ-line therapy, and xenotransplantation, as well as environmental health problems, including climate change, biodiversity loss, and depletion of the ozone layer. Growth in international trade and travel, in combination with population growth, has served to increase the frequency and intensity of health concerns bypassing or spilling over sovereign boundaries.Although health has traditionally been seen an area of limited multilateral cooperation, there is growing awareness that contemporary globalization has led to the proliferation of cross border determinants of health status and is undermining the capacity of nation states to protect health through domestic action alone. (shrink)

Regardless or independent of any actuality or actualization and exempt from spatiotemporal and causal conditions, each individual possibility is pure. Actualism excludes the existence of individual pure possibilities, altogether or at least as existing independently of actual reality. In this paper, I demonstrate, on the grounds of my possibilist metaphysics—panenmentalism—how some of the most fascinating scientific discoveries in chemistry could not have been accomplished without relying on pure possibilities and the ways in which they relate to each other . The (...) discoveries are the following: Dan Shechtman’s discovery of quasicrystals; Linus Pauling’s alpha helix; the discovery of F. Sherwood Rowland and Mario J. Molina concerning the destruction of the atmospheric ozone layer; and Neil Bartlett’s noble gas compounds. On the grounds of the analysis of these cases, actualism must fail, whereas panenmentalism gains support. (shrink)

A theory of implementation for multilateral regulation of business is introduced. Four types of implementation actors (international organizations, states, nongovernmental organizations, and business associations) and three implementation tasks (communicate, monitor, and sanction) are identified. The ease of implementation is affected by issues and events that occur early in the life cycle of a policy. Ten propositions are put forward regarding the effects of problem definition and policy formulation on implementation. The theory is illustrated with the Montreal Protocol on Substances that (...) Deplete the Ozone Layer. (shrink)

In a certain sense, uncertainty andignorance have been recognized in science andphilosophy from the time of the Greeks.However, the mathematical sciences have beendominated by the pursuit of certainty.Therefore, experiments under simplified andidealized conditions have been regarded as themost reliable source of knowledge. Normally,uncertainty could be ignored or controlled byapplying probability theory and statistics.Today, however, the situation is different.Uncertainty and ignorance have moved intofocus. In particular, the global character ofsome environmental problems has shown that theproblems cannot be disregarded. Therefore,scientists and technologists (...) have in many wayscome into a new situation. The Chernobylaccident is a dramatic example, however,problems such as a possible greenhouse effect,a possible reduction of the ozone layer, and soon are all of the same type. These encompasstotally different problems than scientists andtechnologists are traditionally trained to dealwith. In these cases, the standard use ofstatistics has to change, the burden of proofshould be reversed, one should draw ondifferent kinds of expertise, and, in general,science should be ``democratized.''. (shrink)

Although contemporary methods of environmental regulation have registered some significant accomplishments, the current system of environmental law is not working well enough. First the good news: Since the first Earth Day in 1970, smog has decreased in the United States by thirty percent. The number of lakes and rivers safe for fishing and swimming has increased by one-third. Recycling has begun to reduce levels of municipal waste. Ocean dumping has been curtailed. Forests have begun to expand. One success story is (...) the virtual elimination of airborne lead in the United States. Another is the rapid phase-out of ozone-layer depleting chemicals worldwide. Nevertheless, prominent commentators of diverse political persuasions agree in an assessment that conventional models of environmental law have “failed.” Many environmental problems remain unsolved: species extinction, global desertification and deforestation, possible global climate change, and continuing severe air and water pollution in urban areas and poor countries. What is more, successful environmental protection has come only at enormous economic cost. By the year 2000, the Environmental Protection Agency estimates that the United States will spend approximately two percent of its gross national product on environmental pollution control. Academic economists have pointed out the nonsensical inefficiency of many environmental regulations, but usually to no avail. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Doughnut Economics: Seven Ways to Think Like a 21st-Century Economist by Kate RaworthYoko NagaseKate Raworth, Doughnut Economics: Seven Ways to Think Like a 21st-Century Economist. London: Random House Business Books, 2017. 372 pp. £20. ISBN 9781847941374.Question: Is this a book about utopia? Answer: Yes, indeed; it is a book about a twenty-first-century utopia represented by the Doughnut.The author presents a vision of a pragmatic utopia, represented by the (...) inside of her Doughnut that is both distributive and regenerative. According to the author, a distributive economy is "one whose dynamics tend to disperse and circulate value as it is created, rather than concentrating it in ever-fewer hands." A regenerative economy is "one in which people become full participants in regenerating Earth's life-giving cycles so that we thrive within planetary boundaries" (156).The emphasis on the fair distribution of income, wealth, and means of production is an ideal pursued by famous utopians, from perfectly equal distribution of everything in Thomas More's Utopia to very libertarian position of "whatever he has justly made he has a right to keep" by H. G. Wells.1 The distributive Doughnut community aims to enable individuals to be, in Amartya Sen's words, "healthy, empowered and creative—so that they can choose to be and do things in life that they value" (43). This ideal of individuals' rights to choose their life and to realise their ends is the centerpiece of libertarians' ideal society.2 The Doughnut, however, leans heavily toward democratic socialism. Arguments for redistributive measures such as a universal basic income and taxes on land and wealth put forward by the author go beyond promoting equal opportunity and emphasize the necessity of economic means to make the best out of the opportunities (164, 180, 200). [End Page 528]The issue of sustainability at the global level is a concept that does not appear in the classical utopian literature, even though the idea of living happily in perpetuity is very much the tenet of many classical utopian societies. Given the extent of the geographical knowledge that existed by the time Wells explored his idea of a utopia, he was no longer able to set it in some not-yetdiscovered place on Earth like his predecessors did—hence the adaptation of "another planet."3 But this setup had nothing to do with the concept of the ecological limit of Earth. Pre-nineteenth-century utopians would be familiar with the contents of the Doughnut's foundation, the inner shell that consists of the social and economic factors such as food, health, education, and housing. However, the outer shell of the Doughnut is very twenty-first century, enclosing the nine planetary boundaries of the Doughnut as a life-support system, such as ozone layer depletion, ocean acidification, biodiversity loss, and climate change (44–48).The author points out that we need to get a grip on understanding how we belong in the world. Instead of relying on the power of words as George Orwell's Thought Police, the author takes full advantage of the power of the visual, by drawing the Doughnut as a map for a new economy and society.4 If studying economics is tantamount to "mastering the mother tongue of public policy" (287), Doughnut Economics is a critical introduction to and the foundation of economic, environmental, and social policymaking.Rather than utopias as purely thought exercise by Plato or More, Raworth, like David Hume, presents a model of a utopia that is meant to be achievable.5 The economics of the Doughnut does not depend on any unrealistic assumptions of human nature. The author proposes means to reaching inside the Doughnut without abolishing the market system or private property rights. But a strong emphasis is placed on additional redistributive policies and regulations that are deemed critical toward sustainability. This position is consistent with that of the former chancellor of Germany who reportedly said that she "wanted as much market economics as possible, but as much state intervention as necessary."6 In promoting the open-source circular economy movement, the author wonders if it may seem "unfeasibly utopian" (231). Yet given the pace... (shrink)

The timing of the Japanese Government's acceptance of the United Nations multilateral treaties governing several environmental concerns indicates Japan's priorities: biodiversity, global warming, and depletion of the ozone layer. Banning transboundary movement of hazardous wastes is the least prioritized, as indicated by Japan's failure to accept the Ban Amendment to the Basel Convention. The Japanese Environment Agency's policy statements and budget allocations between 1985 and 2000, as well as other official statements and programs, likewise indicate the same priorities. (...) Moreover, of the three priorities, global warming is the top. (shrink)

First published in 1997, this volume addressed the growing preoccupation of scientists at the time had in environmental phenomena, such as global warming, ozone layer depletion, acid rains, fresh water and ocean pollution, desertification, deforestation and the loss of bio-diversity. The crucial and pressing nature of these issues spawned says the author a new wave of research in environmental economics. The volume provides broad surveys of the developments in the economics of the environment and reports on the developing (...) set of environmental problems, analytical tools and economic policies. The importance of the developing approach was that environmental problems are no longer isolated from all other economic dimensions. Throughout the volume they are analysed in an open, generally non-competitive economy with transnational or global externalities. The first part deals with the relationship between the environment, economic growth and technological innovation. The second part analyses the optimal design of environmental taxation, while the third part considers the international dimension of environmental policy. (shrink)

Examines whether many of the perceived threats to our well-being, such as the greenhouse effect, the hole in the ozone layer, smoking, and eating certain foods, are really causes for concern. Indexed. The author is a physicist and engineer and a former head of the Australian government's department of science.

This chapter focuses on changing moral values associated with the provision of public goods, which incorporates an additional moral condition based on donor self-interest. Assistance for less-developed countries to replace ozone-depleting chlorofluorocarbons with non-ozone-depleting hydrofluorocarbons helps the donor country to achieve a thicker stratospheric ozone layer, which protects its own citizens, along with others. The elimination of corrupt practices can provide LDCs with markets for primary exports and lead to better provision of public goods. Improved economic (...) conditions in these countries through different economic and humanitarian measures can improve the prospects of secondary public goods sectors. Aggregator technologies can also play a key role in public goods assistance, with greater implications for the donor and recipient countries. (shrink)

The author sets out a realist defense of the claim that in the absence of an international enforcement agency, multinational corporations operating in a competitive international environment cannot be said to have a moral obligation to contribute to the international common good, provided that interactions are nonrepetitive and provided effective signals of agent reliability are not possible. Examples of international common goods that meet these conditions are support of the global ozone layer and avoidance of the global greenhouse (...) effect. Pointing out that the conclusion that multinationals have no moral obligations in these areas is deplorable, the author urges the establishment of an international enforcement agency. (shrink)

The first section of this issue brings together four essays on “surfaces” – a subject matter which might seem conspicuous or, indeed, palpable enough. Just think of the sheets of paper, window panes, and haptic interfaces surrounding you: the world, evidently, is diffused with surfaces, membranes, and boundaries of all sorts. Some of these things have been salient, for obvious reasons in fields such as media studies, or implicit in notions such as “boundary object”: the retina, photographic plates, basilar membranes, (...) the skin, or various forms of “displays” immediately come to mind. Not even mentioning their immense metaphoricity, surfaces are the entities that make things visible, inscribable, or knowable. But not all of them have been so salient. In fact, most surface-phenomena arguably – and, typically, for similarly obvious reasons – haven't received much scholarly notice at all: plastic wraps, lacquers, lubricants, coatings, silicon wavers, cell membranes, glass, plant leaves, the ozone layer. (shrink)

Despite the occasional upsurge of climate change scepticism amongst conservative politicians and journalists, there is a near-consensus amongst scientists that current levels of atmospheric greenhouse gas are sufficient to alter global weather patterns to possibly disastrous effect. Like the hole in the ozone layer as described by Bruno Latour, global warming is a ‘hybrid’ natural-social-discursive phenomenon. And science fiction (SF) seems to occupy a critical location within this nature/culture nexus. This paper takes as its subject matter what Daniel (...) Bloom dubs ‘cli-fi’. It seeks to describe how a genre defined in relation to science finds itself obliged to produce fictional responses to problems actually thrown up by contemporary scientific research. It argues against the view that ‘catastrophic’ SF is best understood as a variant of the kind of ‘apocalyptic’ fiction inspired by the Christian Book of Revelation, or Apokalypsis, on the grounds that this tends to downplay the historical novelty of SF as a genre defined primarily in relation to modern science and technology. And it examines the narrative strategies pursued in both print and audio-visual SF texts that deal with anthropogenic climate change. (shrink)

Those designing sustainable development implementation schemes will inevitably look to scientists to help them understand sustainable development problems. Scientists have already made important contributions to the understanding of many serious environmental problems, such as the causal relationship between certain synthetic chemicals and destruction of the ozone layer. If scientists had not identified the relationship between upper atmospheric ozone concentrations and releases of chloroflorocarbons, government decisionmakers would not have agreed to action limiting their production. However, although causes and (...) effects of some environmental problems are understood well, others are not, such as the timing and magnitude of climate change caused by greenhouse gases. If global environmental problems are serious, there is an obvious and urgent need to increase scientific understanding of which human actions cause environmental degradation and how nations can proceed with needed development programs without causing further environmental damage. (shrink)

People frequently see design in nature that reflects intuitive teleological thinking– that is, the order in nature that supports life suggests it was designed for that purpose. This research proposes that inferences are stronger when nature supports human life in particular. Five studies (total N = 1788) examine evidence for an anthro-teleological bias. People agreed more with design statements framed to aid humans (e.g., “trees produce oxygen so that humans can breathe”) than the same statements framed to aid other targets (...) (“trees produce oxygen so that leopards can breathe”). The bias was greatest when advantages for humans were well-known and salient (e.g., the ozone layer) and decreased when advantages for other targets were made explicit. The bias was not eliminated by highlighting the benefits for other species, however, and emerged spontaneously for novel phenomena (Jupiter’s gravity protects Earth from asteroids). We conclude that anthropocentric biases enhance existing teleological biases to see stronger design in phenomena where it enables human survival. (shrink)

The crisis of our times is that we have science without wisdom. This is the crisis behind all the others. Population growth, the terrifyingly lethal character of modern war and terrorism, immense differences of wealth across the globe, annihilation of indigenous people, cultures and languages, impending depletion of natural resources, destruction of tropical rain forests and other natural habitats, rapid mass extinction of species, pollution of sea, earth and air, thinning of the ozone layer, above all global warming (...) - even the aids epidemic: all these relatively recent crises have been made possible by modern science and technology. Indeed, in a perfectly reasonable sense of "cause", they have been caused by modern science and technology. An essential step we need to take, in order to tackle these global problems more effectively, intelligently and humanely than we have done so far, is to create a new kind of academic inquiry which puts problems of living, and the pursuit of wisdom, at the heart of the enterprise. (shrink)

Light is strangely absent from most accounts of the environment. From photosynthesis to vitamin D, however, light is central to human well-being. Human circadian rhythms are keyed the alternation of dark and light. Erosion of the ozone layer makes skin cancer a growing threat from excess ultraviolet radiation. Light plays a significant role in health and illness. In changing historical circumstances, light continues to evoke and to express significant issues of value.

The research reported in this article examined the influence of nurses’ attitudes, subjective norms and perceived behavioral control on maintaining patients’ privacy during hospitalization. The data were gathered from 109 nurses in six internal medicine wards at an Israeli hospital. The research was based on the theories of reasoned action and planned behavior. A positive and significant correlation was shown between nurses’ attitude to promoting and maintaining patient privacy and their planned behavior, while perceived behavioral control was the best variable (...) for predicting the nurses’ behavior. Better educated nurses believed that they had fewer resources and anticipated more obstacles in acting to promote and maintain patient privacy. This research adds a new dimension to what is already known about nurses’ attitudes to maintaining patients’ privacy, nurses’ planned behavior and their actual behavior. The practical implications of the findings are the identification of factors that influence the attitudes and behavior of nursing staff, which, in turn, will enable allocation of resources for solving difficulties and removing obstacles. The results will allow the formulation of educational programs to guide staff and also the application of policies based on both patient and nursing staff needs. (shrink)

The role of acetylcholinesterase (AChE) in neurotransmission is well known. But long before synapses are formed in vertebrates, AChE is expressed in young postmitotic neuroblasts that are about to extend the first long tracts. AChE histochemistry can thus be used to map primary steps of brain differentiation. Preceding an possibly inducing AChE in avian brains, the closely related butyrylcholinesterase (BChE) spatially fore-shadows AChE-positive cell areas and the course of their axons. In particular, before spinal motor axons grow, their corresponding rostral (...) sclerotomes and myotomes express BChE, and both their neuronal source and myotomal target cells express AChE. Since axon growth has been found inhibited by acetylcholine, it is postulated that both cholinetsreases can attract neurite growth cones by neutralizing the inhibitor. Thus, the early expression of both cholinesterases that is at least partially independent from classical cholinergic synaptogenesis, sheds new light on the developmental and medical significance of these enzymes. (shrink)

Colour Relationalism asserts that colours are non-intrinsic or inherently relational properties of objects, properties that depend not only on a target object but in addition on some relation that object bears to other objects. The most powerful argument for Relationalism infers the inherently relational character of colour from cases in which one’s experience of a colour contextually depends on one’s experience of other colours. Experienced colour layering—say looking at grass through a tinted window and experiencing opaque green through transparent grey—demands (...) a contextual interdependency of one’s experience of one of these colours on one’s experience of the other. However, most if not all colour ontologies, and core perceptual experiential mechanisms like acquaintance and representation, can accommodate colour layering. It follows that experienced colour layering is consistent with colours being non-relational—this contextual interdependency of colours does not entail the constitutive dependency of one colour on the other. I utilize colour layering to examine the inference from the contextual to the constitutive interdependency of colours as it is employed in a well-known argument for Relationalism. I conclude that our justification for Relationalism is far weaker than Relationalists suggest. I first introduce readers to colour layering, then to Relationalism, and following this focus on the intersection of these topics. (shrink)

This paper examines the idea, commonly presupposed but seldom explicitly stated in discussions of certain philosophical problems, that the objects and phenomena of the world are structured in a hierarchy of "levels", from the bottom level of microparticles to the levels of cells and biological organisms and then to the levels of creatures with mentality and social groups of such creatures. Parallel to this "layered model" of the natural world is an ordering of the sciences, with physics as our "basic" (...) science and the "special sciences" forming a ladder-like hierarchy, from chemistry to biology to psychology and the social sciences, all grounded in basic physics. Focusing on two formulations of this model, the emergentist model of C. Lloyd Morgan and the reductionist model due to Paul Oppenheim and Hilary Putnam, the paper discusses such questions as these:What makes a given level of objects "higher" or "lower" than another? What makes a given property "higher" or "lower" than another property. Are objects and properties always comparable with respect to "higher" and "lower"? Can an overarching hierarchy of entities and properties be developed that comprehends the entire natural order? The issues turn out to be quite complex, and no definitive general conclusions are reached. (shrink)

Loosely put, colour constancy for example occurs when you experience a partly shadowed wall to be uniformly coloured, or experience your favourite shirt to be the same colour both with and without sunglasses on. Controversy ensues when one seeks to interpret ‘experience’ in these contexts, for evidence of a constant colour may be indicative a constant colour in the objective world, a judgement that a constant colour would be present were things thus and so, et cetera. My primary aim is (...) to articulate a viable conception of Present Constancy, of what occurs when a constant colour is present in experience, despite the additional presence of some experienced colour variation (e.g., correlating to a change in illumination). My proposed conception involves experienced colour layering – experiencing one opaque colour through another transparent one – and in particular requires one of those experienced layers to remain constant while the other changes. The aim is not to propose this layering conception of colour constancy as the correct interpretation of all constancy cases, but rather to develop the conception enough to demonstrate how it could and plausibly should be applied to various cases, and the virtues it has over rivals. Its virtues include a seamless application to constancy cases involving variations in filters (e.g., sunglasses) and illuminants; its ability to accommodate experiences of partial colours and error-free interpretations of difficult cases; and its broad theoretical-neutrality, allowing it to be incorporated into numerous perceptual epistemologies and ontologies. If layered constancy is prevalent, as I suspect it is, then our experiential access to colours is critically nuanced: we have been plunged into a world of colour without being told that we will rarely, if ever, look to a location and experience just one of them. (shrink)

In this paper I argue that non-reductive physicalism (NRP) continues to rely on the ontological aspect of the layer cake model of the world (LCM). NRP is a post-unity account of the relationship between phenomena in the world in the sense that it has been developed in response to the perceived failure of the unity of science thesis. The LCM constitutes a framework for the organisation of phenomena in the world. It articulates the idea that phenomena in the world (...) are organised into levels. Specifically, that phenomena are layered into distinct, hierarchical levels of organisation. Historically, the unity of science thesis and the LCM have been intertwined; the LCM being the framework within which a unity of science might be possible. My argument will demonstrate that, despite a move away from unity of science positions, the LCM persists in post-unity accounts. In order to argue for this thesis, I present a close analysis of Oppenheim & Putnam’s classic presentation of the LCM; picking out the principle of hierarchic compositionality which, I argue, captures the ontological aspect of the LCM. I then demonstrate how NRP continues to rely upon the principle and, as a result, continues to support the ontological aspect of the LCM. This result is significant. It shows that whilst the rejection of the reductionist aspect of the thesis has served as the basis for post-unity positions these positions do not engage directly with the framework within which reduction might be facilitated – the LCM. Furthermore, it demonstrates that pluralist or disunity accounts of the relationship between phenomena in the world will also have to engage directly with the framework of the LCM in order to avoid being merely anti-reductionist. (shrink)

Layers in Husserl's Phenomenology situates Husserl firmly within the trajectory of later Continental thought and contributes to the recent reconsideration of Husserl as a legitimate precursor to the thought of Maurice Merleau-Ponty, Emmanuel Levinas, and Jacques Derrida.

Restoring Layered Landscapes explores ecological restoration in complex landscapes, where ecosystems intertwine with important sociopolitical meanings.

In his PhD proposal, now published as Seeing Sociological, Garfinkel [2006] formulated action in terms of a mutually constitutive structure—the Noesis-Noema Structures. This structure can be traced to Aaron Gurwitsch’s gestalt psychology and Law of Good Gestalt which theorises how participants prioritise functional Gestalts over other possible meanings of what is perceivable in their surroundings. While Gurwitsch illustrated his theory using images, in this paper we revisit Gurwitsch’s theory in light of the advances in recording real-time interaction to consider Gestalt (...) in spatio-temporality of real-time interaction. We consider the Law of Good Gestalt in terms of the dimensions of time and space, and postulate two analytical principles—the Principle of Good Momentary Gestalt and the Principle of Good Temporal Gestalt—for analysing a multi-angle video segment of a monologue taken from a training event. The analysis examines how the monologue was embedded in a multi-layer projection structure, so that during the time of the monologue, the trainer and trainees can be seen as achieving a transition between one activity to another while sustaining the frame of the training event. Through this, the analysis highlights the multi-layered structure of participants’ field of perception that constitutes their experience of the social activity, and explores a “method” to reconstruct such a structured field of perception through re-coupling meanings to the assemblages of multimodal resources recoverable on video. (shrink)

This paper depicts Ian Hacking’s ‘styles of reasoning’ as conditions of possibility. After distinguishing between possibilities and causes, it articulates the implicit stratigraphical metaphor used to describe the relationship between different conditions of possibility, with ‘lower’ layers being necessary for ‘higher’ ones. It notes the use of this stratigraphical metaphor in the work of multiple scholars in history and in science studies. The paper suggests three ways in which this model can be useful: clarifying the definition and use of ‘context’ (...) in history of science; redefining counterfactuals as ‘possible historical worlds’; and thinking up new forms of ‘big picture’ histories of science. (shrink)

We develop the theory of layered posets and use the notion of layering to prove a new iteration theorem is κ-cc, as long as direct limits are used sufficiently often. This iteration theorem simplifies and generalizes the various chain condition arguments for universal Kunen iterations in the literature on saturated ideals, especially in situations where finite support iterations are not possible. We also provide two applications:1 For any n≥1, a wide variety of <ωn−1-closed, ωn+1-cc posets of size ωn+1 can consistently (...) be absorbed by quotients of saturated ideals on ωn.2 For any n∈ω, the tree property at ωn+3 is consistent with Chang’s conjecture ↠. (shrink)

The epidemic of COVID-19 appears to be reshaping the world, separating before and after, present and past. Its perceived novelty raises the question of what role the past might play in the present epidemic and in responses to it. Taking the view that the past has not passed, but is present in is material and immaterial remains, and continuously emerging from these, we argue that it should not be studied as closed narration but through the array of its traces, which (...) constitute the texture of the present. To that end, and building on long-term ethnographic research on past and present epidemics in western Kenya, we assemble here some preliminary observations on the first weeks of COVID-19 in Kenya. We explore how the acute epidemic crisis currently unfolding is intertwined with layered fragments of earlier epidemic events, attending to material infrastructures, institutional practices, and ritual responses, to the presence of virally loaded bodies, pharmaceuticals, and their residues, and to the resurgence of often painful memories and emotions. People in this region have experienced a long century of epidemics and anti-epidemic measures of varying duration and intensity, from colonial and postcolonial sleeping sickness and smallpox to HIV/AIDS and more recently cancer, alongside actual or anticipated outbreaks of cholera and Ebola. This local perception of one long epidemic qualifies the notion of a radical temporal break that the COVID-19 pandemic is often associated with in European conversations. (shrink)

I discuss here the definition of computer simulations, and more specifically the views of Humphreys, who considers that an object is simulated when a computer provides a solution to a computational model, which in turn represents the object of interest. I argue that Humphreys's concepts are not able to analyse fully successfully a case of contemporary simulation in physics, which is more complex than the examples considered so far in the philosophical literature. I therefore modify Humphreys's definition of simulation. I (...) allow for several successive layers of computational models, and I discuss the relations that exist between these models, the computer, and the object under study. An aim of my proposal is to clarify the distinction between computational models and numerical methods, and to better understand the representational and the computational functions of models in simulations. (shrink)

“Vulnerability” is a key concept for research ethics and public health ethics. This term can be discussed from either a conceptual or a practical perspective. I previously proposed the metaphor of layers to understand how this concept functions from the conceptual perspective in human research. In this paper I will clarify how my analysis includes other definitions of vulnerability. Then, I will take the practical‐ethical perspective, rejecting the usefulness of taxonomies to analyze vulnerabilities. My proposal specifies two steps and provides (...) a procedural guide to help rank layers. I introduce the notion of cascade vulnerability and outline the dispositional nature of layers of vulnerability to underscore the importance of identifying their stimulus condition. In addition, I identify three kinds of obligations and some strategies to implement them. This strategy outlines the normative force of harmful layers of vulnerability. It offers concrete guidance. It contributes substantial content to the practical sphere but it does not simplify or idealize research subjects, research context or public health challenges. (shrink)

We discuss two-layered logics formalising reasoning with paraconsistent probabilities that combine the Łukasiewicz [0, 1]-valued logic with Baaz ▵\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\triangle $$\end{document} operator and the Belnap–Dunn logic. The first logic (introduced in [7]) formalises a ‘two-valued’ approach where each event ϕ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\phi $$\end{document} has independent positive and negative measures that stand for, respectively, the likelihoods of ϕ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\phi (...) $$\end{document} and ¬ϕ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\lnot \phi $$\end{document}. The second logic that we introduce here corresponds to ‘four-valued’ probabilities. There, ϕ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\phi $$\end{document} is equipped with four measures standing for pure belief, pure disbelief, conflict and uncertainty of an agent in ϕ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\phi $$\end{document}.We construct faithful embeddings of and into one another and axiomatise using a Hilbert-style calculus. We also establish the decidability of both logics and provide complexity evaluations for them using an expansion of the constraint tableaux calculus for. (shrink)

BackgroundCarefully planned research is critical to developing policies and interventions that counter physical, psychological and social challenges faced by young people living with HIV/aids, without increasing burdens. Such studies, however, must navigate a ‘vulnerability paradox’, since including potentially vulnerable groups also risks unintentionally worsening their situation. Through embedded social science research, linked to a cohort study involving Adolescents Living with HIV/aids (ALH) in Kenya, we develop an account of researchers’ responsibilities towards young people, incorporating concepts of vulnerability, resilience, and agency (...) as ‘interacting layers’.MethodsUsing a qualitative, iterative approach across three linked data collection phases including interviews, group discussions, observations and a participatory workshop, we explored stakeholders’ perspectives on vulnerability and resilience of young people living with HIV/aids, in relation to home and community, school, health care and health research participation. A total of 62 policy, provider, research, and community-based stakeholders were involved, including 27 ALH participating in a longitudinal cohort study. Data analysis drew on a Framework Analysis approach; ethical analysis adapts Luna’s layered account of vulnerability.ResultsALH experienced forms of vulnerability and resilience in their daily lives in which socioeconomic context, institutional policies, organisational systems and interpersonal relations were key, interrelated influences. Anticipated and experienced forms of stigma and discrimination in schools, health clinics and communities were linked to actions undermining ART adherence, worsening physical and mental health, and poor educational outcomes, indicating cascading forms of vulnerability, resulting in worsened vulnerabilities. Positive inputs within and across sectors could build resilience, improve outcomes, and support positive research experiences.ConclusionsThe most serious forms of vulnerability faced by ALH in the cohort study were related to structural, inter-sectoral influences, unrelated to study participation and underscored by constraints to their agency. Vulnerabilities, including cascading forms, were potentially responsive to policy-based and interpersonal actions. Stakeholder engagement supported cohort design and implementation, building privacy, stakeholder understanding, interpersonal relations and ancillary care policies. Structural forms of vulnerability underscore researchers’ responsibilities to work within multi-sectoral partnerships to plan and implement studies involving ALH, share findings in a timely way and contribute to policies addressing known causes of vulnerabilities. (shrink)

This article develops a view of shape representation both in visual experience and in subpersonal visual processing. The view is that, in both cases, shape is represented in a ‘layered’ manner: an object is represented as having multiple shape properties, and these properties have varying degrees of abstraction. I argue that this view is supported both by the facts about visual phenomenology and by a large collection of evidence in perceptual psychology. Such evidence is provided by studies of shape discriminability, (...) apparent motion, multiple-object tracking, and structure-from-motion. Recent neuroscientific work has also corroborated this psychophysical evidence. Finally, I draw out implications of the layered view for processes of concept acquisition. 1 Introduction2 Metric Properties andShape Properties3 Metric Views4 Against Metric Views of Visual Shape Experience5 The Visual System Uses Abstract Shape Properties6 Against Metric Views of Visual Shape Representation7 Neural Underpinnings of Abstract Shape Perception8 Implications. (shrink)

Brown highlights cases of “chromatic layering”—scenarios in which one perceives an opaque object through a transparent volume/film/filter with a chromatic or achromatic content of its own—as a way of reining in the argument from perceptual variation sometimes used to motivate a relationalist account of color properties. Brown urges that the argument in question does not generalize smoothly to all types of perceptual variation—in particular, that it fits poorly in layering cases in which there is either experiential fusion or scission. While (...) he doesn’t want to reject the relationalist description of variation in all cases, he does suggest that there is an alternative, and preferable, description available for layering cases, and that the availability of this alternative puts limits on the scope of both relationalist arguments and relationalist conclusions. I claim that the obstacles for the argument from perceptual variation posed by cases of layering are merely apparent. I argue that relationalism can be extended smoothly to cases of layering, and indeed that denying this extension, as Brown proposes, contravenes ordinary and more or less universally accepted canons of rational inquiry. (shrink)