In this paper we build a prey–predator model with discrete weight structure for the predator. This model will conserve the number of individuals and the biomass and both growth and reproduction of the predator will depend on the food ingested. Moreover the model allows cannibalism which means that the predator can eat the prey but also other predators. We will focus on a simple version with two weight classes or stage and present some general mathematical results. In the last part, (...) we will assume that the dynamics of the prey is fast compared to the predator’s one to go further in the results and eventually conclude that under some conditions, cannibalism can stabilize the system: more precisely, an unstable equilibrium without cannibalism will become almost globally stable with some cannibalism. Some numerical simulations are done to illustrate this result. (shrink)
Alan Millar's paper (2011) involves two parts, which I address in order, first taking up the issues concerning the goal of inquiry, and then the issues surrounding the appeal to reflective knowledge. I argue that the upshot of the considerations Millar raises count in favour of a more important role in value-driven epistemology for the notion of understanding and for the notion of epistemic justification, rather than for the notions of knowledge and reflective knowledge.
Presents an analysis of Jonathan Edwards' theological position. This book includes a study of his life and the intellectual issues in the America of his time, and examines the problem of free will in connection with Leibniz, Locke, and Hume.
The dominant approach to environmental policy endorsed by conservative and libertarian policy thinkers, so-called “free market environmentalism”, is grounded in the recognition and protection of property rights in environmental resources. Despite this normative commitment to property rights, most self-described FME advocates adopt a utilitarian, welfare-maximization approach to climate change policy, arguing that the costs of mitigation measures could outweigh the costs of climate change itself. Yet even if anthropogenic climate change is decidedly less than catastrophic, human-induced climate change is likely (...) to contribute to environmental changes that violate traditional conceptions of property rights. Viewed globally, the actions of some countries—primarily industrialized nations—are likely to increase environmental harms suffered by other countries—less developed nations that have not made any significant contribution to climate change. It may well be that aggregate human welfare would be maximized in a warmer, wealthier world, or that the gains from climate change will offset environmental losses. Yet such claims, even if demonstrated, would not address the normative concern that the consequences of anthropogenic global warming would infringe upon the rights of people in less-developed nations. As a consequence, this paper calls for a rethinking of FME approaches to climate change policy. (shrink)
Prepared by editors of the distinguished series The Works of Jonathan Edwards, this authoritative anthology includes selected treatises, sermons, and autobiographical material by early America’s greatest theologian and philosopher.
Jonathan Dancy works within almost all fields of philosophy but is best known as the leading proponent of moral particularism. Particularism challenges “traditional” moral theories, such as Contractualism, Kantianism and Utilitarianism, in that it denies that moral thought and judgement relies upon, or is made possible by, a set of more or less well-defined, hierarchical principles. During the summer of 2006, the Philosophy Departments of Lund University (Sweden) and the University of Reading (England) began a series of exchanges to (...) take place every other year, alternating between the departments. Andreas Lind and Johan Brännmark arranged to meet Dancy during the first meeting in Lund to talk about questions regarding particularism, moral theory and the shape of the analytical tradition. The major part of the conversation is printed below. (shrink)
On the now dominant Quinean view, metaphysics is about what there is. Metaphysics so conceived is concerned with such questions as whether properties exist, whether meanings exist, and whether numbers exist. I will argue for the revival of a more traditional Aristotelian view, on which metaphysics is about what grounds what. Metaphysics so revived does not bother asking whether properties, meanings, and numbers exist (of course they do!) The question is whether or not they are fundamental.
v. 1. Freedom of the will -- v. 2. Religious affections -- v. 3. Original sin -- v. 4. The Great Awakening -- v. 5. Apocalyptic writings -- v. 6. Scientific and philosophical writings -- v. 7. The life of David Brainerd -- v. 8. Ethical writings -- v. 9. A history of the work of redemption -- v. 10. Sermons and discourses, 1720-1723 -- v. 13. The "miscellanies" (entry nos. a-z, aa-zz, 1-500) -- v. 15. Notes on Scripture -- (...) v. 17. Sermons and discourses, 1730-1733 -- v. 18. The "miscellanies" (entry nos. 501-832) -- v. 19. Sermons and discourses, 1734-1738 -- v. 20. The miscellanies -- v. 22. Sermons and discourses, 1739-1742 -- v. 24. The "blank Bible" (2 v.). (shrink)
Every religion offers both hope and fear. They offer hope in virtue of the benefits promised to adherents, and fear in virtue of costs incurred by adversaries. In traditional Christianity, the costs incurred are expressed in terms of the doctrine of hell, according to which each person consigned to hell receives the same infinite punishment. This strong view of hell involves four distinct theses. First, it maintains that those in hell exist forever in that state (the Existence Thesis) and that (...) at least some human persons will end up in hell (the Anti-Universalism Thesis). Once in hell, there is no possibility of escape (the No Escape Thesis), and the justification of and purpose for hell is to mete out punishment to those whose earthly lives and character deserve it (the Retribution Thesis). (shrink)
John Stuart Mill argued, in his Principles of Political Economy, that existing laws and customs of private property ought to be reformed to promote a far more egalitarian form of capitalism than hitherto observed anywhere. He went on to suggest that such an ideal capitalism might evolve spontaneously into a decentralized socialism involving a market system of competing worker co-operatives. That possibility of market socialism emerged only as the working classes gradually developed the intellectual and moral qualities required for worker (...) co-operatives to succeed against private firms. Workers would tend to reject the hierarchical wage relation as they developed the requisite personal qualities, he believed, and capitalists, facing escalating wages for skilled labour as a result of the diminishing supply of high-quality workers for hire, would tend to lend their capital to the worker co-operatives ‘at a diminishing rate of interest, and at last, perhaps, even to exchange their capital for terminable annuities. In this or some such mode’, he speculated, ‘the existing accumulations of capital might honestly, and by a kind of spontaneous process, become in the end the joint property of all who participate in their productive employment: a transformation which, thus effected, would be the nearest approach to social justice, and the most beneficial ordering of industrial affairs for the universal good, which it is possible at present to foresee.’. (shrink)
'Mr Bennett, as was to be expected, has written a first-rate book on Kant's Analytic. It is vivid, entertaining, and extremely instructive. It will be found of absorbing interest both by those who already know the Critique and by those - if there are any such - who have a developed interest in philosophy, yet no direct acquaintance with Kant. These last it will surely drive to the text and, as surely, will drive them to approach it in a truly (...) philosophical spirit. Bennett's Kant is not a giant immersed, or frozen, in time. He is a great contemporary - a little out of touch, admittedly, with recent developments in mathematics and physics - but one with whom we can all argue, against him, at his side, or obliquely to him. And so Bennett does argue, continuously, fiercely, and fruitfully; and summons to join in the argument, at appropriate moments, those older contemporaries, Locke, Leibniz, Berkeley, and Hume, and those younger contemporaries, Wittgenstein, Ryle, Ayler, Quine, Quinton, Warnock, and others. This is splendid, and a necessary corrective to that extraordinary isolation in which Kant tends to be islanded, partly indeed, by his own unique qualities, but partly by oceans of the wrong kind of respect. Bennett, continuously engaging his great antagonist, shows the right kind.'. (shrink)
Arrhenius and Rabinowicz have argued that Millian qualitative superiorities are possible without assuming that any pleasure, or type of pleasure, is infinitely superior to another. But AR's analysis is fatally flawed in the context of ethical hedonism, where the assumption in question is necessary and sufficient for Millian qualitative superiorities. Marginalist analysis of the sort pressed by AR continues to have a valid role to play within any plausible version of hedonism, provided the fundamental incoherence that infects AR's use of (...) such analysis is removed. But what AR call ‘Millian superiorities’ are never genuine qualitative superiorities in Mill's sense. Mill scholars need to appreciate this point and recognize that the interpretation of qualitative superiorities as infinite superiorities is the only interpretation which is compatible with the text of Mill's Utilitarianism. The continuing failure to appreciate the possibility of infinite superiorities has precluded any adequate understanding of the extraordinary structure of Mill's pluralistic hedonistic utilitarianism. (shrink)
In my Practical Reality I argued that the reasons for which we act are not to be conceived of as psychological states of ourselves, but as real states of the world. The main reason for saying this was that only thus can we make sense of the idea that it is possible to act for a good reason. The good reasons we have for doing this action rather than that one consist mainly of features of the situations in which we (...) find ourselves; they do not consist in our believing certain things about those situations. For instance, the reason for my helping that person is that she is in trouble and I am the only person around. It is not that I believe both that she is in trouble and that I am the only person around. Give that the reason to help is that she is in trouble etc., it must be possible for my reason for helping to be just that, if it is indeed possible for one to act for a good reason. In fact, this sort of thing must be the normal arrangement. The reasons why we act, therefore, that is, our reasons for doing what we do, are not standardly to be conceived as states of ourselves, but as features of our situations. (shrink)
How does consciousness vary across the animal kingdom? Are some animals ‘more conscious’ than others? This article presents a multidimensional framework for understanding interspecies variation in states of consciousness. The framework distinguishes five key dimensions of variation: perceptual richness, evaluative richness, integration at a time, integration across time, and self-consciousness. For each dimension, existing experiments that bear on it are reviewed and future experiments are suggested. By assessing a given species against each dimension, we can construct a consciousness profile for (...) that species. On this framework, there is no single scale along which species can be ranked as more or less conscious. Rather, each species has its own distinctive consciousness profile. (shrink)
Originally published posthumously in 1955, Harvey G. Townsend's Philosophy of Jonathan Edwards reprinted some of Edwards' most important early compositions on natural philosophy, Of Being and The Mind, and collected nearly two hundred Miscellanies entries, some of them published here for the first time. In his introduction, Townsend points to Edwards' radical idealism that derived from Christian Platonism and John Locke rather than George Berkeley, as commonly thought. Townsend's work represents an important sourcebook for Edwards' writings, and his introduction (...) presents a clear picture of mainstream Edwards scholarship at the middle of the twentieth century. (shrink)
The existence of a meaningful distinction between economic rights and “other rights” has been a cornerstone of constitutional law for the past sixty years. During this period, the federal courts consistently have taken the position that Congress is free to abuse citizens’ economic liberties, but is not permitted to interfere with such other, noneconomic “rights” as freedom of expression, freedom of assembly, and freedom of religion.
In 1970 Amartya Sen exposed an apparent antinomy that has come to be known as the Paradox of the Paretian Libertarian. Sen introduced his paradox by establishing a simple but startling theorem. Roughly put, what he proved was that if a mechanism for selecting social choice functions satisfies two standard adequacy conditions, there are possible situations in which it will violate either the very weak libertarian precept that every individual has at least some rights or the seemingly innocuous Paretian principle (...) that an option should be judged unacceptable if there is an available alternative that everyone prefers to it. Many economists and philosophers have proposed solutions to Sen's problem, but there is no general consensus on what solution is correct. In the present paper I argue that Sen's original theorem fails to establish the existence of any conflict between libertarianism and Paretianism. Furthermore, I contend that Sen has misinterpreted certain other theorems which he has used to defend the existence of a paradoxical conflict between these two doctrines. In general, I try to show that whenever Sen posits a Paretian-libertarian conflict to explain an apparently troubling result in social choice theory, the difficulty can be better dealt with either by claiming that the theorem in question imposes overly strong background constraints on the form of social choice functions or by claiming that it relies on an unacceptable construal of individual rights. (shrink)
"With an astonishing erudition... and in a direct no-nonsense style, Bennett expounds, compares, and criticizes Spinoza’s theses.... No one can fail to profit from it. Bennett has succeeded in making Spinoza a philosopher of our time." --W. N. A. Klever, _Studia Spinoza_.
In this much-anticipated book, Jonathan Dancy offers the only available full-scale treatment of particularism in ethics, a view with which he has been associated for twenty years. Dancy now presents particularism as the view that the possibility of moral thought and judgement does not in any way depend on an adequate supply of principles. He grounds this claim on a form of reasons-holism, holding that what is a reason in one case need not be any reason in another, and (...) maintaining that moral reasons are no different in this respect from others. Ethics Without Principles offers detailed treatment and criticism of opposing positions of all sorts, with useful summaries. It also contains three chapters on the nature of what Dancy calls 'contributory' reasons, which, though the topic of much interest at the moment, are not often discussed in anything like the detail given here. And it offers a distinctive form of value-holism to go with the holism of reasons. As Dancy's definitive statement on particularism, the book will be required reading for all those working on moral philosophy and ethical theory. (shrink)
In the World Library of Psychologists series, international experts themselves present career-long collections of what they judge to be their finest pieces - extracts from books, key articles, salient research findings, and their major theoretical and practical contributions. Jonathan St B T Evans is amongst the foremost cognitive psychologists of his generation, having been influential in spearheading developments in the psychological study of reasoning from its very beginnings in the 1970s up to the present day. This volume of self-selected (...) papers recognises Professor Evan's major contribution to the psychological study of thinking and reasoning by bringing together his most influential and important works. Early selections in the book focus upon experimental studies of reasoning - matching bias in the Wason selection task, belief bias in syllogistic reasoning, and also seminal work on the understanding of conditional statements. The later selections include Evans' work on more general forms of dual process and dual system theory, and his recent account of two minds in one brain. The volume also contains chapters which highlight Evans' contribution to the topic of human rationality, and also his influence on the development of the "new paradigm" in the psychology of reasoning. The key developments in the psychology of reasoning are paralleled by those in Evans's own intellectual history, and the book will therefore make essential reading for all researchers in the psychology of reasoning, and a wider audience of graduate and upper-level undergraduate students with an interest in reasoning and/or dual process theory. (shrink)
I came to epistemology through an interest in the concept of rationality, and especially through the attacks on the rationality of religious believers. My thoughts at the time focused on the disappointing quality of the arguments for and against religious belief, and I recall being astonished at the time that philosophers capable of such penetrating insight in other areas had nothing that seemed either penetrating or original. The defenders sounded too much like mere apologists for the faith, and the attackers (...) arid and dull, with both sides often exuding a scent of intellectual dishonesty. (shrink)
Conditional sentences are among the most intriguing and puzzling features of language, and analysis of their meaning and function has important implications for, and uses in, many areas of philosophy. Jonathan Bennett, one of the world's leading experts, distils many years' work and teaching into this book, making it the fullest and most authoritative treatment of the subject.
In Direct Belief I argue for the Theory of Direct Belief, which treats having a belief about an individual as an unmediated relation between the believer and the individual the belief is about. After a critical review of alternative positions, I use Grice’s theory of conversational implicature to provide a detailed pragmatic account of substitution failure in belief ascriptions and go on to defend this view against objections, including those based on an unwarranted “Inner Speech” Picture of Thought. The work (...) serves as a case study in pragmatic explanation, dealing also with methodological issues about context-sensitivity in language and the relation between semantics and pragmatics. (shrink)
An introduction to the debate of the epistemic significance of peer disagreement. This article examines the epistemic significance of peer disagreement. It pursues the following questions: (1) How does discovering that an epistemic equal disagrees with you affect your epistemic justification for holding that belief? (e.g., does the evidence of it give you a defeater for you belief?) and (2) Can you rationally maintain your belief in the face of such disagreement? This article explains and motivates each of the central (...) positions, including steadfast views and conciliatory views of peer disagreement, while at the same time raising challenges for each of them. It concludes by speculating about new directions that the debate will take. (shrink)
Morality exercises a deep and questionable influence on the way we live our lives. The influence is deep both because moral injunctions are embedded in our psyches long before we can reflect on their status and because even after we become reflective agents, the question of how we should live our lives among others is intimately bound up with the more general question of how we should live our lives: our stance toward morality and our conception of our lives as (...) having significance are of a piece. The influence is questionable because morality pretends to a level of objectivity that it may not possess. Moral injunctions are meant to be binding on us in some way that is independent of the desires or preferences we may happen to have. When one asserts that a certain action is morally worthy or shameful one is, prime facie, doing more than merely expressing approval or disapproval or trying to get others to act as instruments of one's own will. If moral assertions were shown, at bottom, to be merely such exhortations, then they would be shown to wear a disguise. Morality would be revealed as pretending to an objectivity it does not have, and such a revelation could not but have a profound impact on our lives. It is doubtful that such a revelation could be kept locked up inside our studies. (shrink)