The focus of Norton's book is the distinction between objectives and values in developing environmental policies. Norton argues that environmentalism is a coalition of many groups working toward common objectives, but unlike other social action movements the environmental coalition does not have shared moral principles.

This book examines from a multidisciplinary viewpoint the question of what we mean - what we should mean - by setting sustainability as a goal for environmental management. The author, trained as a philosopher of science and language, explores ways to break down the disciplinary barriers to communication and deliberation about environment policy, and to integrate science and evaluations into a more comprehensive environmental policy. Choosing sustainability as the keystone concept of environmental policy, the author explores what we can learn (...) about sustainable living from the philosophy of pragmatism, from ecology, from economics, from planning, from conservation biology and from related disciplines. The idea of adaptive, or experimental, management provides the context, while insights from various disciplines are integrated into a comprehensive philosophy of environmental management. The book will appeal to students and professionals in the fields of environmental policy and ethics, conservation biology, and philosophy of science. (shrink)

Includes bibliographical references and index. ISBN 0-226-595 19-6 (cloth : alk. paper) . A . 1. Environmental policy. 2. Environmental management — Decision making. 3. Interdisciplinary research. 4. Communication in science. 5. Sustainable ...

Two types of sustainability definitions are contrasted. ‘Social scientific’ definitions, such as that of the Brundtland Commission, treat sustainability as a relationship between present and future welfare of persons. These definitions differ from ‘ecological’ ones which explicitly require protection of ecological processes as a condition on sustainability. ‘Scientific contextualism’ does not follow mainstream economists in their efforts to express all effects as interchangeable units of individual welfare; it rather strives to express sensitivity to different types and scales of impacts that (...) present activities can exert on the future. We can therefore express the moral obligation to act sustainably as an obligation to protect the natural processes that form the context of human life and culture, emphasizing those large biotic and abiotic systems essential to human life, health, and flourishing culture. Ecosystems, which are understood as dynamic, self-organizing systems humans have evolved within, must remain ‘healthy’ if humans are to thrive. The ecological approach to sustainability therefore sets the protection of dynamic, creative systems in nature as its primary goal. (shrink)

There has been a recent spate of publications on how we should evaluate change to ecological systems, some of which have introduced the concept of ‘relational values’. Environmental ethicists have, with a few exceptions, not engaged with this debate. We survey the literature on relational values, noting that most advocates of the concept introduce relational values as an additional type of value, in addition to ‘instrumental’ and ‘intrinsic’ values. In this paper, we explore the idea that all environmental values are (...) ultimately relational. We explore how such an approach can be articulated, and discuss the implications of this concept for the future of environmental ethics and value studies. One key implication is to suggest a stronger role for empirical ethnography. (shrink)

No detailed description available for "Linguistic Frameworks and Ontology".

A post-positivist understanding of ecological science and the call for an “ecological ethic” indicate the need for a radically new approach to evaluating environmental change. The positivist view of science cannot capture the essence of environmental sciences because the recent work of “reflexive” ecological modelers shows that this requires a reconceptualization of the way in which values and ecological models interact in scientific process. Reflexive modelers are ecological modelers who believe it is appropriate for ecologists to examine the motives for (...) their choices in developing models; this self-reflexive approach opens the door to a new way of integrating values into public discourse and to a more comprehensive approach to evaluating ecological change. This reflexive building of ecological models is introduced through the transformative simile of Aldo Leopold, which shows that learning to “think like a mountain” involves a shift in both ecological modeling and in values and responsibility. An adequate, interdisciplinary approach to ecological valuation, requires a re-framing of the evaluation questions in entirely new ways, i.e., a review of the current status of interdisciplinary value theory with respect to ecological values reveals that neither of the widely accepted theories of environmental value—neither economic utilitarianism nor intrinsic value theory (environmental ethics)—provides a foundation for an ecologically sensitive evaluation process. Thus, a new, ecologically sensitive, and more comprehensive approach to evaluating ecological change would include an examination of the metaphors that motivate the models used to describe environmental change. (shrink)

Thoreau believed that we can learn how to live by observing nature, a view that appeals to modem environmentalists. This doctrine is exemplified in Thoreau’s use of insect analogies to illustrate how humans, like butterflies, can be transformed from the “larval” stage, which relates to the physical world through consumption, to a “perfect” state in which consumption is less important, and in which freedom and contemplation are the ends of life. This transformational idea rests upon a theory of dynamic dualism (...) in which the animal and the spiritual self remain in tension, but in which the “maturity” of the individual-transcendence of economic demands as imposed by society-emerges through personal growth based on observation of nature. Thoreau’s dynamic theory of value, and its attractiveness to environmentalists, explains why environmentalists reject the mainstream, neoclassical economic paradigm. This paradigm accepts consumer preferences as “givens” and treats these preferences as thesource of all value in their model. Because Thoreau insists that there is value in transformations from one preference set to another, the neoclassical paradigm cannot capture this central value, and cannot account for the environmentalists’ emphasis on public “education” to reduce consunlptive demands of humans on their environment. (shrink)

The convergence hypothesis asserts that, if one takes the full range of human values—present and future—into account, one will choose a set of policies that can also be accepted by an advocate of a consistent and reasonable nonanthropocentrism. Brian Steverson has attacked this hypothesis from a surprising direction. He attributes to deep ecologists the position that nonhuman nature has intrinsic value, interprets this position to mean that no species could ever be allowed to go extinct, and proceeds to show that (...) my commitment to contextualism prohibits me from advocating the protection of species universally. In response, I show, by reference to recent scientific findings, how difficult it is to defend species preservation in all situations. In particular, I argue that Steverson’s appeal to a possible world in which we have nearly complete biological knowledge misses the point of the convergence hypothesis. It is an empirical hypothesis, with significant indirect, and some direct, evidence to support it. Although it is a falsifiable hypothesis about realworld policies, it cannot be falsified by a contrary-to-fact case. (shrink)

The assumption that environmental ethics must be nonanthropocentric in order to be adequate is mistaken. There are two forms of anthropocentrism, weak and strong, and weak anthropocentrism is adequate to support an environmental ethic. Environmental ethics is, however, distinctive vis-a-vis standard British and American ethical systems because, in order to be adequate, it must be nonindividualistic.Environmental ethics involves decisions on two levels, one kind of which differs from usual decisions affecting individual fairness while the other does not. The latter, called (...) allocational decisions, are not reducible to the former and govern the use of resources across extended time. Weak anthropocentrism provides a basis for criticizing individual, consumptive needs and can provide the basis for adjudicatingbetween these levels, thereby providing an adequate basis for environmental ethics without the questionable ontological commitments made by nonanthropocentrists in attributing intrinsie value to nature. (shrink)

I have taken the traditional problem of the seeming interdependence of identity concepts and essentialistic concepts and the attendant difficulties with circularity as a starting point in my consideration of recent attempts to provide accounts ofde re essences. Having distinguished between theories of individual and generic essences, I have shown how a linguistic device based upon a new approach to referring expressions has, perhaps, provided some advance in the understanding of individualde re essences. I have argued that, however efficacious these (...) linguistic devices may be in dealing with individual essences, they are of no help in dealing with generic essences. I considered, therefore, one of the recent attempts to use science as the arbiter ofde re essences and concluded that such attempts will not, ultimately, solve the traditional problem of circularity. That problem remains, arising in different forms to thwart different attempts to account forde re generic essences. (shrink)

Gifford Pinchot, the first official U.S. Forester, wrote: “There are just two things on this material earth—people and natural resources.” This philosophy apparently implies that all things other than people have only instrumental value. Environmentalists, even professional foresters, today believe that Gifford Pinchot’s system of forest management is both theoretically and practically inadequate. A difficult, and central, problem in the theory of environmental management is therefore to characterize exactly how Pinchot went wrong. If we knew that, we would be well (...) on our way to formulating a new theory of management, one that would be more adequate to the complexities of today’s environmental problems. (shrink)

The trend in environmental management toward more adaptive, community-based, and holistic approaches will require new approaches to environmental valuation. In this paper, we offer a new valuation approach, one that embodies the core principles of adaptive management, which is experimental, multi-scalar, and place-based. In addition, we use hierarchy theory to incorporate spatial and temporal variability of natural systems into a multi-scalar management model. Our approach results in the consideration of multiple values within community-based ecosystem management, rather than an attempt to (...) maximise a single variable such as economic efficiency. We then offer two heuristics – one procedural and one evaluative – to guide a community toward shared goals, and to develop indicators to measure progress toward these goals. We illustrate our approach by application to environmental and developmental decisions in the Southern Appalachians. (shrink)

Several recent authors have recommended that “sense of place” should become an important concept in our evaluation of environmental policies. In this paper, we explore aspects of this concept, arguing that it may provide the basis for a new, “place-based” approach to environmental values. This approach is based on an empirical hypothesis that place orientation is a feature of all people’s experience of their environment. We argue that place orientation requires, in addition to a home perspective, a sense of the (...) space around the home place and that this dual aspect can be modeled using a “hierarchical” methodology. We propose a “triscalar,” place-oriented system for the analysis of environmental values, explore the characteristics of place-orientation through several examples, and employ these characteristics to distinguish acceptable and unacceptable aspects of the NIMBY (not-in-my-backyard) idea. (shrink)

If environmentalists are to combat effectively the continuing environmental decay resulting from more and more intense human exploitation of nature, they need a plausible and coherent rationale for preserving sensitive areas and other species. This need is illustrated by reference to two examples of controversies concerning large public projects in wilderness areas. Analyses of costs and benefits to presently existing human beings and the utilitarian theory which supports such theories are inadequate to provide such a rationale, as other writers have (...) shown. A number of environmentalists have suggested that ascriptions of rights to nonhuman animals, plants, and other natural objects may provide the necessary rationale. I argue that such ascriptions can only be effective if they are supported by a general theory of rights. Although no such general theory is developed, I state four minimal conditions which must be fulfilled by all rights holders as entailments of the concept of a right and, hence, as necessary conditions on rights holding, regardless of the general theory of rights espoused. I then argue that no appeals to rights of nonhumans can simultaneously fulfill these four minimal conditions and, on the other hand, satisfy the need for a coherent rationale for environmental preservation. In the central argument of the essay I exploit the distinction between the concern of vegetarians and antivivisectionists who rest their case for animal rights on the analogy ofanimal suffering to human suffering and the concern of environmentalists to protect the integrity of holistic ecosystems. I then conclude that even if the case for nonhuman rights can be made convincingly, the rights defended are insufficient for the development of a complete and coherent rationale for environmental preservation. (shrink)

I contrast two roles for environmental philosophers—“applied philosophy” and “practical philosophy”—and show that the strategy of applied philosophy encourages an axiological and monistic approach to theory building. I argue that the mission of applied philosophy, and the monistic theory defended by J. Baird Callicott, in particular, tends to separate philosophers and their problems from real management issues because applied philosophers and moral monists insist that theoretical exploration occurs independent of, and prior to, applications in particular situations. This separation of theory (...) and practice suggests that philosophers are likely to be effective in policy discussions only to the degree that they can offer unquestioned theories that adjudicate real problems. Callicott offers his monistic, ontological approach as universal guidance to environmental activists and decision makers, arguing that ecosystems and communities are moral subjects that can “own” their own inherent value. Callicott’s theory, however, faces a crucial, unanswered theoretical dilemma which illustrates the impossibility of the dual task Callicott has set for his theory—to provide a single, ontological unification of ethics under nonanthropocentric holism and to capture the fine nuances of ethical obligations as experienced in varied communities. I also show that monistic assumptions have led to an unfortunate interpretation ofAldo Leopold’s land ethic and that a pluralist and pragmatist direction is likely to provide a more efficacious and theoretically defensible direction for further study of environmental philosophy in a more practical mode. (shrink)

Economists, who adopt the principle of consumer sovereignty, treat preferences as unquestioned for the purposes of their analysis. They also represent preferences for future outcomes as having value in the present. It is shown that these two characteristics of neoclassical modelling rest on similar reasoning and are essential to achieve high aggregatability of preferences and values. But the meaning and broader implications of these characteristics vary according to the arguments given to support these methodological choices. The resulting ambiguities raise questions (...) regarding economists' attitudes towards the study (by other disciplines) of preference formation and reformation. Under a strong, positivist interpretation (which is philosophically problematic), consumer sovereignty represents a rejection of any meaningful study of these subjects; under a weaker, methodological understanding, consumer sovereignty merely draws a boundary between economics and other disciplines. The weaker version is argued to be more defensible, and economists are urged to engage in interdisciplinary work that will clarify how preferences are formed, criticised and reformed. (shrink)

Katie McShane, while accepting my 'convergence hypothesis' (the view that anthropocentrists and nonanthropocentrists will tend to propose similar policies), argues that nonanthropocentrism is nevertheless superior because it allows conservationists to have a deeper emotional commitment to natural objects than can anthropocentrists. I question this reasoning on two bases. First, McShane assumes a philosophically tendentious distinction between intrinsic and instrumental value – a distinction that presupposes a dualistic worldview. Second, I question why McShane believes anthropocentrists – weak anthropocentrists, that is – (...) cannot 'love' or 'feel awe' toward natural objects. Her argument, that is, only works against strong anthropocentrism, which I never advocated. (shrink)

Critics of my book, Sustainability, have raised many objections which are addressed. In general, I emphasize that the book is an integrative work; it must be long and complex beause it attempts a comprehensive treatment of problems of communication, of evaluation, and of management action in environmental discourse. I explain that I depend upon the pragmatists and on work in the pragmatics of language because the current language of environmental policy discourse is inadequate to allow deliberative processes that can reach (...) consensus and cooperative actions. I revise my account of risk analysis somewhat, and defend my broad approach to the concept of sustainability. Finally, I discuss applications of my book to the current situation in environmental policy discourse. (shrink)

This comment explains why the claims of Callicott et al. in their paper 'Was Aldo Leopold a Pragmatist?' (Environmental Values 18 (2009): 453—486) are incorrect. The arguments they make are shown to be based upon several misunderstandings. In addition, important contributions by Aldo Leopold to the philosophy of conservation are missed.

Philosophers have paid little attention to the distinction between conservation and preservation, apparently because they have accepted John Passmore’s suggestion that conservationism is an expression of anthropocentric motives and that “true” preservationism is an expression of nonanthropocentric motives. Philosophers have therefore concentrated their efforts on this distinction in motives. This reduction,however, is insensitive to important nuances of environmentalist objectives: there are a wide variety of human reasons for preserving natural ecosystems and wild species. Preservationist policies represent a concem to protect (...) biological diversity from the simplifying effects of human management and are motivated by the full range of values (consumptive, aesthetic, scientific, and moral) attached to a diverse biota.Conservationists and preservationists differ mainly in their emphasis on resilience measures versus predictability measures of stability, respectively. The distinction between anthropocentric and nonanthropocentric motives loses importance as emphasis is placed on the longest term values humans place on the proteetion of biological diversity. (shrink)

Review of John O'Neill, Alan Holland and Andrew Light, Environmental Values (London: Routledge, 2007 ).

In lieu of an abstract, here is a brief excerpt of the content:The Past and Future of Environmental Ethics/PhilosophyBryan Norton (bio)About 15 years ago, at one of the first meetings of the group known as the International Society for Environmental Ethics (ISEE) at American Philosophical Association (APA) meetings, I drew an analogy with the field of medical ethics, arguing that environmental ethicists should look beyond philosophy departments and seek liaisons with Schools of Forestry, Schools of Marine Science, and Environmental (...) Studies Programs, and that philosophers should take a more active role in policy discussions and process. At that time, I was actively engaged in the actual policy processes, at the Environmental Protection Agency and other agencies, and perceived that: (a) These agencies desperately needed the kinds of conceptual and normative analysis philosophers could provide; but that (b) Practitioners of environmental policy did not find that the categories and concepts of traditional "metaphysical" approaches to environmental value provided them with useful guidance in policy decision making.My urging gained me some heavy criticism, and even made me some enemies, as leading members of the environmental ethics establishment openly complained that my judgment—in seeing philosophy of environmental protection as needing a basis in analysis of possible actions—had been compromised by "spending too much time inside the beltway."Since those early years, I have watched my colleagues in environmental ethics debate this point, but mainly as a sideline to their metaphysical speculation.In the meantime, my colleagues in medical ethics have populated medical schools, formed liaisons with medical research institutions, and become regular commentators on newscasts about ethically controversial medical issues. Meanwhile, Chris Stone, the legal scholar, had his students do a word search of the Congressional Record over several years, and found almost no references to "environmental ethics."As I see it, there are three differences between the environmental ethics and the medical ethics cases: (1) Philosophers have responded to medical issues by engaging practitioners, while most environmental ethicists have become, at best, "token" members of philosophy departments and, whereas medical ethics practitioners tend to talk about decision criteria [End Page 134] ("informed consent", etc.), environmental ethicist continue to concentrate on the metaphysical foundations of environmental values; (2) The medical profession, beset with public controversies, recognized the need for more ethical discourse about medical choices, and actively embraced philosophers in their programs, whereas most environmental practioners cannot see how philosophical analysis will help them to make better decisions; and (3) Being much wealthier than environmentalists, the medical schools and professionals were able to initiate positions and offer financial support, while environmental ethicists have to compete with other environmental researchers and commentators for small pots of funding.While we can't do much about (3), we can, I assert, do a lot more about (1) and (2). With respect to philosophy departments, the trend may be(and in my view should be) toward developing joint appointments between philosophy departments and policy schools, forestry schools, and environmental studies programs. This will bring philosophers and students into more direct contact with real problems and the language of decision making, rather than metaphysics. And with respect to point (2), I continue to urge environmental philosophers to address real problems, rather than operating on an abstract level and then finding "applications" of these abstractions.Philosophers, in other words, should become more "pragmatic" in their approach to both policy and philosophy. One aspect of this move is the need—after years of thinking of environmental philosophy as environmental ethics—to concentrate on epistemological, not metaphysical, aspects of environmental science and decision making.Let me expand on this last point, because it seems to me to be the most important consideration affecting the future of environmental ethics, at least in the short and medium run. I think the central debates about whether nonhumans have "intrinsic value" will be (and should be) replaced with a vigorous discussion of the epistemology of all environmental values. Recently, two leading environmental philosophers, Baird Callicott and Mark Sagoff, have strongly endorsed what would traditionally be called "non-naturalist" approaches to the epistemology of environmental ethics. For Sagoff, this involved positing "ethical and aesthetic" facts which should guide environmental policy discourse away from any discussion of the utilitarian benefits of an improved... (shrink)

Kevin Elliott has argued that I defend two “conceptions” of adaptive management processes in my book, Sustainability: A Philosophy of Adaptive Ecosystem Management, calling the conceptions “political” and “metaphysical,” respectively. Elliott claims that I must choose between them. Elliott has not sufficiently explained how he proceeds from the claim that I provide two separable arguments for my adaptive management process to his conclusion that I have two conceptions of this process. Once this confusion is clarified, it becomes clear that adapting (...) a pragmatist grounding for the process (which Elliott refers to as my “metaphysical” conception) is compatible with an open and inclusionary process. Pragmatism, in other words, does not exclude those who adopt ideological approaches to value from the adaptive process; it merely urges them, once in the process, to propose testable hypotheses rather than resort to ideological rhetoric. (shrink)

Ecosystem health, as James Nelson argues, must be understood as having both descriptive and normative content; it is in this sense a 'morally thick' concept. The health analogy refers (a) at the similarities between conservation ecology and medicine or plant pathology as normative sciences, and (b) to the ability of ecosystems to 'heal' themselves in the face of disturbances. Nelson, however, goes beyond these two aspects and argues that judgements of illness in ecosystems only support moral obligations to protect them (...) if they are attributed a 'good of their own'. But this latter extension of the analogy flies in the face of ecological science, which has been forced to abandon organicism. If one separates the question of the warranted assertibility of environmentalists' goals from the question of where values in nature are located, the search for an objective realm of value realism can be seen to be unnecessary. (shrink)

The pragmatic conception of truth, anticipated by Henry David Thoreau and developed by C.S. Peirce and subsequent pragmatists, is proposed as a useful analogy for characterising 'sustainability.' Peirce's definitions of 'truth' provides an attractive approach to sustainability because (a) it re-focuses discussions of truth and objectivity from a search for 'correspondence' to an 'external world' (the 'conform' approach) to a more forward-looking ('transform') approach; and (b) it emphasises the crucial role of an evolving, questioning community in the conduct of inquiry. (...) Any successful definition of sustainability must share these characteristics with Peircean truth. While Peirce and John Dewey never reconciled their disagreements regarding the nature and task of 'inquiry', a pragmatist resolution of their differences is offered, arguing that we need both a logic of management sciences (logica utens) and a logic of pure science (logica docens), which (perhaps among other differences) respond very differently to uncertainty. It is shown that adaptive management – can be understood as a first approximation of a logica utens for social learning in pursuit of solutions to environmental problems, and it is suggested that a pragmatist, transform approach to inquiry such as Dewey's may provide a way around the 'fact-value' gulf. (shrink)

German Romanticism plays a central role in Gilbert Simondon's writings. In _Mode of Existence_, Simondon draws on Goethe and E. T. A. Hoffmann to illustrate the tragic consequences of failing to attend to the individuated relationship between landscape and tool. While Novalis is only mentioned in passing, his work presents the most radical form of what might be called Romantic mechanology. With the stated aim of achieving the ideal of perpetual motion, Novalis's poetics highlight the central role literary experimentation plays (...) in technological thinking, revealing how Simondon may shed new light on several key aspects of romantic poetry and philosophy. (shrink)

Ethics on the Ark presents a passionate, multivocal discussion—among zoo professionals, activists, conservation biologists, and philosophers—about the future of zoos and aquariums, the treatment of animals in captivity, and the question of whether the individual, the species, or the ecosystem is the most important focus in conservation efforts. Contributors represent all sides of the issues. Moving from the fundamental to the practical, from biodiversity to population regulation, from animal research to captive breeding, Ethics on the Ark represents an important gathering (...) of the many fervent and contentious viewpoints shaping the wildlife conservation debate. (shrink)

While environmental ethics has flourished and contributed to the discussion of environmental policy, other areas of philosophy (epistemology, for example), have been less in evidence in these discussions. In this paper, we explore a role for these neglected areas: they are best viewed as meta-level discussions of the conceptual and linguistic problems that arise as scientists develop models at the edges of scientific fields relevant to our understanding of environmental problems and possible solutions. The relevant fields, which might differ depending (...) on the specific environmental problem being addressed, can be thought of as a collection of “philosophies of ____” where the blank stands for one of the relevant disciplines, such as biology, ecology, or economics. We eschew the typical arguments regarding which models are correct in favor of a pragmatic/pluralistic approach to understanding scientific models. This pragmatic approach softens interdisciplinary conflicts as Rudolf Carnap’s Principle of Tolerance (linguistic conventionalism) urges an experimental approach to developing linguistic frameworks for differing situations. This approach is illustrated by an examination of the models proposed by ecologists and economists. (shrink)

I agree with much of Freeman and Reichart’s paper; so, by way of comment, I will simply supplement his argument in two ways. First, agreeing with their conclusion that we can, and should, re-direct business toward environmental protection without embracing a nonanthropocentric ethic, I will show that the pre-occupation of recent and contemporary environmental ethics with the anthropocentrism/non-anthropocentrism debate is avoidable. It rests on a misinterpretation of possible moral responses to the arrogance with which Western science, technology, and culture has (...) treated nature. A better understanding of the history of the idea of nonanthropocentrism will, I believe, strengthen Freeman and Reichart’s case for pluralism in environmental ethics and values. Second, I will emphasize several points that seem to me to fit well with Freeman and Reichart’s approach, and which would provide important detailing for the type of approach he sketches, arguing that much hard intellectual work stands between us and a satisfactory, and useful, but pluralistic, and life-centered ethic for business and the environment. (shrink)

Rudolf Carnap defended two quite different critiques of traditional philosophy: in addition to the much discussed verifiability criterion, he also proposed a critique based upon "formalizability." Formalizability rests upon the principle of tolerance plus an acceptance of a linguistic methodology. Standard interpreters of Carnap (e.g., [7] and [8]) assume that the principle of tolerance (and, hence, formalizability) gains its argumentative support from verificationism. Carnap, in fact, kept the two critiques separate and independent. Indeed, verificationism is even, in spirit, inconsistent with (...) tolerance. If the formalizability approach is emphasized, traditional metaphysics is reconstructed, not banished. Philosophical disputes remain rationally decidable, but metatheoretical in nature. Two results follow: Carnap's metaphilosophy cannot be rejected merely on the basis of rejections of verifiability. Second, Carnap's conclusion that all philosophy concerns language provides no reason for despair. (shrink)

the number three has played a remarkably active role in many theories, philosophical and otherwise, from the Holy Trinity of Christianity to Aristotle’s golden mean, and to the dialectical thinking of Hegel and Marx. Given the variety of roles the number has played, it might seem an over-reach to find important similarities between two thinkers—one a forester and land manager of the last century, and the other a contemporary architect—based on a shared use of the number. Nevertheless, I will note (...) that Brook Muller and Aldo Leopold have similarly articulated a three-layered understanding of human habitation in the larger world. Clearly, the null hypothesis is, in this case, plausible: Why would anyone claim that.. (shrink)

In this reply, we respond to the comments of Palmerino and Laird on our article, "Galileo's Refutation of the Speed Distance Law of Fall Rehabilitated," published in the same issue of Centaurus.

This chapter contains section titled: What is Biological Diversity? The Definition Problem Two Models of Biodiversity Science and Management Understanding Biodiversity in Public Policy Discourse Identifying and Measuring Values Derived from Biological Diversity Conclusion References Further Reading.

The convergence hypothesis asserts that, if one takes the full range of human values—present and future—into account, one will choose a set of policies that can also be accepted by an advocate of a consistent and reasonable nonanthropocentrism. Brian Steverson has attacked this hypothesis from a surprising direction. He attributes to deep ecologists the position that nonhuman nature has intrinsic value, interprets this position to mean that no species could ever be allowed to go extinct, and proceeds to show that (...) my commitment to contextualism prohibits me from advocating the protection of species universally. In response, I show, by reference to recent scientific findings, how difficult it is to defend species preservation in all situations. In particular, I argue that Steverson’s appeal to a possible world in which we have nearly complete biological knowledge misses the point of the convergence hypothesis. It is an empirical hypothesis, with significant indirect, and some direct, evidence to support it. Although it is a falsifiable hypothesis about realworld policies, it cannot be falsified by a contrary-to-fact case. (shrink)

La suposición de que una ética ambiental adecuada debe ser no-antropocéntrica es errónea. Hay dos formas de antropocentrismo: débil y fuerte, y el primero es suficiente para mantener una ética ambien¬tal. Sin embargo, la ética ambiental sí difiere de los sistemas éticos británicos y norteamericanos en la medida en que, para ser adecuada, debe ser no-individualista. La ética ambiental contiene dos niveles de decisión: el primero refiere a las decisiones usuales que afectan la equidad individual, el segundo no tiene esta (...) perspectiva individual. Este segundo nivel, llamado decisiones de asignación, no es reducible al primero y gobierna el uso de recursos a través del tiempo. El antropocentrismo débil provee una base para criticar las necesidades individuales de consumo y puede ser la base para juzgar entre estos niveles. Así, permite un fundamento adecuado para la ética ambiental sin necesidad de recurrir a los cuestionables compromisos ontológicos que adoptan los no-antropocentristas al atribuir valor intrínseco a la naturaleza. (shrink)