The history of the Euclidean Steiner tree problem, which is the problem of constructing a shortest possible network interconnecting a set of given points in the Euclidean plane, goes back to Gergonne in the early nineteenth century. We present a detailed account of the mathematical contributions of some of the earliest papers on the Euclidean Steiner tree problem. Furthermore, we link these initial contributions with results from the recent literature on the problem.

This special volume of Studies in Christian Ethics constitutes the most significant continuation to date of Christian social ethics in the tradition of Ronald Preston. It brings together leading scholars and new voices in the field from around the world, covering a broad range of contemporary issues, including globalisation, poverty, feminism, civil society, economics and religious pluralism.

We are causing species to go extinct at extraordinary rates, altering existing species in unprecedented ways and creating entirely new species. More than ever before, we require an ethic of species to guide our interactions with them. In this book, Ronald L. Sandler examines the value of species and the ethical significance of species boundaries and discusses what these mean for species preservation in the light of global climate change, species engineering and human enhancement. He argues that species possess (...) several varieties of value, but they are not sacred. It is sometimes permissible to alter species, let them go extinct and invent new ones. Philosophically rigorous, accessible and illustrated with examples drawn from contemporary science, this book will be of interest to students of philosophy, bioethics, environmental ethics and conservation biology. (shrink)

Some have suggested that there is no fact to the matter as to whether or not a particular physical system relaizes a particular computational description. This suggestion has been taken to imply that computational states are not real, and cannot, for example, provide a foundation for the cognitive sciences. In particular, Putnam has argued that every ordinary open physical system realizes every abstract finite automaton, implying that the fact that a particular computational characterization applies to a physical system does not (...) tell oneanything about the nature of that system. Putnam''s argument is scrutinized, and found inadequate because, among other things, it employs a notion of causation that is too weak. I argue that if one''s view of computation involves embeddedness (inputs and outputs) and full causality, one can avoid the universal realizability results. Therefore, the fact that a particular system realizes a particular automaton is not a vacuous one, and is often explanatory. Furthermore, I claim that computation would not necessarily be an explanatorily vacuous notion even if it were universally realizable. (shrink)

Food Ethics: The Basics is a concise yet comprehensive introduction to the ethical dimensions of the production and consumption of food. It offers an impartial exploration of the most prominent ethical questions relating to food and agriculture including: • Should we eat animals? • Are locally produced foods ethically superior to globally sourced foods? • Do people in affluent nations have a responsibility to help reduce global hunger? • Should we embrace bioengineered foods? • What should be the role of (...) government in promoting food safety and public health? Using extensive data and real world examples, as well as providing suggestions for further reading, Food Ethics: The Basics is an ideal introduction for anyone interested in the ethics of food. (shrink)

Computer simulation models of mentality and brain theory each, confront a challenge that they do not account for all the data of psychology: the category of contents of consciousness, as a phenomenologist would call it, seems completely untouched by these physicalistic analyses. In my paper I provide a sketch of a possible approach to explaining conditions for ascription of consciousness which is compatible with computer-theoretic and brain-theoretic models.

The concept ‘nature’ and the role it has played in conservation philosophy have been criticized on theoretical and ethical grounds. Theoretical critiques include that it is ambiguous and implies a false human-nature dichotomy and/or human exceptionalism. Ethical critiques include that it has been used to justify unjust conservation practices, such as colonial erasure and displacing Indigenous and local peoples from their lands. More recently, the concept has been criticized on the grounds that under conditions of high rate and high magnitude (...) anthropogenic change it is not reliable for guiding effective conservation decision-making. Do these critiques imply theorists and practitioners ought to develop a conservation philosophy without ‘nature’? Drawing from work by Steve Vogel and Sally Haslanger, I advocate taking an ameliorative approach to ‘nature,’ rather than abandoning the concept altogether. ‘Nature’ is not an ontologically privileged category that has special moral or value properties, but sufficiently ameliorated, it nevertheless has a crucial role to play in the future of conservation philosophy. (shrink)

Belief in the divine origin of the universe began to wane most markedly in the nineteenth century, when scientific accounts of creation by natural law arose to challenge traditional religious doctrines. Most of the credit - or blame - for the victory of naturalism has generally gone to Charles Darwin and the biologists who formulated theories of organic evolution. Darwinism undoubtedly played the major role, but the supporting parts played by naturalistic cosmogonies should also be acknowledged. Chief among these was (...) the nebular hypothesis proposed by Pierre Simon Laplace in 1796, which explained the origin of the solar system as a natural development over extended periods of time. Ronald Numbers focuses on Laplace's theory as it affected American scientific thought. he first traces the history of Laplace's cosmogony chronologically, from its European inception to its demise about 1900. the last three chapters explore some of the theological and scientific consequences resulting from the acceptance of this cosmogony. Most significant was the change in the status of supernatural doctrine. When the nebular hypothesis lost credence at the end of the nineteenth century, those who had before tried to accommodate natural theory with supernatural doctrine no longer felt compelled to do so when faced with succeeding theories. The nebular hypothesis, it seems, had established natural law in the heavens. (shrink)

Ronald Weed's book offers a fresh investigation of political conflict in Aristotle's Politics. While there have been a number of studies on stasis or factional conflict, few provide a thorough analysis of its intractable character dimensions. Weed presents a highly original and provocative analysis of the moral psychology of factional conflict in the middle books of the Politics, arguing that the character deficiencies of a citizenry are the central causes of stasis and indispensable for understanding both the nature of (...) these conflicts and their remedies. In Weed's view, Aristotle contends that stasis can be greatly limited without greatly reducing bad character, so long as the vices that breed it most are limited. Weed presents a novel and detailed explanation of how Aristotle's institutional remedies, such as the selective distribution of honor and wealth, may bypass circumstances that provoke stasis, if they account for what vices are triggered under those circumstances. Weed advances an understanding of Aristotle's practical thought that captures Aristotle's penetrating realism about political breakdown and pathology, while also preserving the robust and irreducible essence of his theory of character and rational choice. (shrink)

Editorial preface vol. 70.2 Content Type Journal Article Category Editorial Pages 1-2 DOI 10.1007/s11153-011-9321-6 Authors Ronald L. Hall, Department of Philosophy, Stetson University, DeLand, FL, USA Journal International Journal for Philosophy of Religion Online ISSN 1572-8684 Print ISSN 0020-7047.

Employee relations ethics, or the lack thereof, is a problem and an issue in both private and public organizations. This article is a case study in military ERE. A retired career Naval officer, I discuss problems of downsizing and retrenchment from a "military" perspective in terms of what I refer to as a "broken covenant.".

Virtue ethics is now widely recognized as an alternative to Kantian and consequentialist ethical theories. However, moral philosophers have been slow to bring virtue ethics to bear on topics in applied ethics. Moreover, environmental virtue ethics is an underdeveloped area of environmental ethics. Although environmental ethicists often employ virtue-oriented evaluation (such as respect, care, and love for nature) and appeal to role models (such as Henry Thoreau, Aldo Leopold, and Rachel Carson) for guidance, environmental ethics has not been well informed (...) by contemporary work on virtue ethics. With _Character and Environment_, Ronald Sandler remedies each of these deficiencies by bringing together contemporary work on virtue ethics with contemporary work on environmental ethics. He demonstrates the many ways that any ethic of character can and should be informed by environmental considerations. He also develops a pluralistic virtue-oriented environmental ethic that accommodates the richness and complexity of our relationship with the natural environment and provides effective and nuanced guidance on environmental issues. These projects have implications not only for environmental ethics and virtue ethics but also for moral philosophy more broadly. Ethical theories must be assessed on their theoretical and practical adequacy with respect to all aspects of the human ethical situation: personal, interpersonal, and environmental. To the extent that virtue-oriented ethical theory in general, and Sandler's version of it in particular, provides a superior environmental ethic to other ethical theories, it is to be preferred not just as an environmental ethic but also as an ethical theory. _Character and Environment_ will engage any reader with an interest in environmental ethics, virtue ethics, or moral philosophy. (shrink)

The essays in this volume blend historical and philosophical reflection with concern for contemporary political problems. They show that the causes and motivations of civil religion are a permanent fixture of the human condition, though some of its manifestations and proximate causes have shifted in an age of multiculturalism, religious toleration, and secularization.

Starting from Søren Kierkegaard's insight that fully accepting the human condition requires one to live with the persistent temptation to escape from it, Ronald Hall finds similar concerns reflected in the work of two modern-day philosophers, Stanley Cavell and Martha Nussbaum, who equally find in a philosophy of love and marriage the key to understanding how humans may achieve happiness in the acceptance of their humanity. All three thinkers follow a "logic of paradox" in showing how success in the (...) human quest to be human depends crucially on the struggle humans experience with the ever-present opportunities to pursue alternative paths. What Kierkegaard called "living existentially" can be achieved only after confronting and refusing the possibilities of living in "aesthetic," "ethical," or even "religious" denial of one's true humanity. By creating this dialogue between the nineteenth-century Danish thinker and two eminent twentieth-century philosophers, Hall reveals the continuing relevance of Kierkegaard's thought to our own age and its cogency as an interpretation of the human predicament. (shrink)

A distinction is made between superpositional and non-superpositional quantum computers. The notion of quantum learning systems - quantum computers that modify themselves in order to improve their performance - is introduced. A particular non-superpositional quantum learning system, a quantum neurocomputer, is described: a conventional neural network implemented in a system which is a variation on the familiar two-slit apparatus from quantum physics. This is followed by a discussion of the advantages that quantum computers in general, and quantum neurocomputers in particular, (...) might bring, not only to our search for more powerful computational systems, but also to our search for greater understanding of the brain, the mind, and quantum physics itself. (shrink)

This article addresses the implications of rapid and uncertain ecological change, and global climate change in particular, for reserve oriented and restoration oriented ecosystem management. I argue for the following conclusions: (1) rapid and uncertain ecological change undermines traditional justifications for reserve oriented and restoration oriented ecosystem management strategies; (2) it requires rethinking ecosystem management goals, not just developing novel strategies (such as assisted colonization) to accomplish traditional goals; (3) species preservation ought to be deemphasized as an ecosystem management goal; (...) (4) reserve oriented ecosystem management remains well justified, but the goals for it must be revised. (shrink)

As the crusade to outlaw the teaching of evolution changed to a battle for equal time for creationism, the ideological defenses of that doctrine also shifted from primarily biblical to more scientific grounds. This essay describes the historical development of “scientific creationism” from a variety of late–nineteenth– and early–twentieth–century creationist reactions to Charles Darwin's theory of evolution, through the Scopes trial and the 1960s revival of creationism, to the current spread of strict creationism around the world.

It is claimed that there are pre-objective phenomena, which cognitive science should explain by employing the notion of non-conceptual representational content. It is argued that a match between parallel distributed processing (PDP) and non-conceptual content (NCC) not only provides a means of refuting recent criticisms of PDP as a cognitive architecture; it also provides a vehicle for NCC that is required by naturalism. A connectionist cognitive mapping algorithm is used as a case study to examine the affinities between PDP and (...) NCC. (shrink)

Searle (1980) constructed the Chinese Room (CR) to argue against what he called \Strong AI": the claim that a computer can understand by virtue of running a program of the right sort. Margaret Boden (1990), in giving the English Reply to the Chinese Room argument, has pointed out that there isunderstanding in the Chinese Room: the understanding required to recognize the symbols, the understanding of English required to read the rulebook, etc. I elaborate on and defend this response to Searle. (...) In particular, I use the insight of the English Reply to contend that Searle's Chinese Room cannot argue against what I call the claim of \Weak Strong AI": there are some cases of understanding that a computer can achieve solely by virtue of that computer running a program. I refute several objections to my defense of the Weak Strong AI thesis. (shrink)

It is argued that standard arguments for the Externalism of mental states do not succeed in the case of pre-linguistic mental states. Further, it is noted that standard arguments for Internalism appeal to the principle that our individuation of mental states should be driven by what states are explanatory in our best cognitive science. This principle is used against the Internalist to reject the necessity of narrow individuation of mental states, even in the prelinguistic case. This is done by showing (...) how the explanation of some phenomena requires quantification over broadly-individuated, world-involving states; sometimes externalism is required. Although these illustrative phenomena are not mental, they are enough to show the general argumentative strategy to be incorrect: scientific explanation does not require narrowly-individuated states. (shrink)

(2001). Moving places: A comment on the traveling Vietnam Memorial. Philosophy & Geography: Vol. 4, No. 2, pp. 219-224.

Originally published in 1995, Creation-Evolution Debates is the second volume in the series, Creationism in Twentieth Century America, reissued in 2021. The volume comprises eight debates from the early 1920s and 1930s between prominent evolutionists and creationists of the time. The original sources detail debates that took place either orally or in print, as well as active debates between creationists over the true meaning of Genesis I. The essays in this volume feature prominent discussions between the likes of Edwin Grant (...) Conklin, Henry Fairfield Osbourne and William Jennings Bryan, John Roach Francis and Charles Francis Potter, George McCready Price and Joseph McCabe and William Bell Riley versus Charles Smith, amongst many others. The collection will be of especial interest to natural historians, and theologians as well as academics of philosophy, and history. (shrink)

Originally published in 1995, The Selected Works of George McCready Price is the seventh volume in the series, Creationism in Twentieth Century America, reissued in 2019. The volume brings together the original writings and pamphlets of George McCready Price, a leading creationist of the early antievolution crusade of the 1920s. McCready Price labelled himself the 'principal scientific authority of the Fundamentalists' and as a self-taught scientist he enjoyed more scientific repute amongst fundamentalists of the time. This interesting and unique collection (...) of original source material includes five of his writings between 1906 and 1924, challenging the new Darwinian theory of evolution and natural selection through his writings on the natural sciences. His literature covers the topics of evolution and biology and critiques biological arguments for evolution. He also wrote widely on geology offering his own alternative argument of 'flood geography' in opposition to the Darwinian theory concerning palaeontology and geology. This volume will be of interest to historians of natural history and the creationism movement, as well as scholars of religion and American history. (shrink)