In this paper the Hurwicz decision rule is applied to an adjustment problem concerning the decision whether a given action should be improved in the light of some knowledge on the states of nature or on other actors' behaviour. In comparison with the minimax and the minimin adjustment principles the general Hurwicz rule reduces to these specific classes whenever the underlying loss function is quadratic and knowledge is given by an ellipsoidal set. In the framework of the adjustment model (...) discussed in this paper Hurwicz's optimism index can be interpreted as a mobility index representing the actor's attitude towards new external information. Examples are given that serve to illustrate the theoretical findings. (shrink)

Perhaps the most impressive environmental ethic developed to date in any detail is Robin Attfield's biocentric consequentialism. Indeed, on first study, it appears sufficiently impressive that, before presenting any alternative theoretical approach, one would first need to establish why one should not simply embrace Attfield's. After outlining a seemingly decisive flaw in his theory, and then criticizing his response to it, this article adumbrates a very different theoretical basis for an environmental ethic: namely, a value-pluralist one. In so doing, it (...) seeks to give due weight to anthropocentric, zoocentric, biocentric and ecocentric considerations, and argues that the various values involved require trading off. This can be accomplished by employing multidimensional indifference curves. Moreover, after considering a three-dimensional indifference plane superimposed upon a three-dimensional possibility frontier, it becomes apparent that a moral-pluralist environmental ethic is, contrary to widespread assumptions, capable, in principle at least, of providing determinate answers to moral questions. (shrink)

This article provides unified axiomatic foundations for the most common optimality criteria in statistical decision theory. It considers a decision maker who faces a number of possible models of the world (possibly corresponding to true parameter values). Every model generates objective probabilities, and von Neumann–Morgenstern expected utility applies where these obtain, but no probabilities of models are given. This is the classic problem captured by Wald’s (Statistical decision functions, 1950) device of risk functions. In an Anscombe–Aumann environment, I characterize Bayesianism (...) (as a backdrop), the statistical minimax principle, the Hurwicz criterion, minimax regret, and the “Pareto” preference ordering that rationalizes admissibility. Two interesting findings are that c-independence is not crucial in characterizing the minimax principle and that the axiom which picks minimax regret over maximin utility is von Neumann–Morgenstern independence. (shrink)

This volume presents a collection of refereed papers reflecting the state of the art in the area of over-constrained systems. Besides 11 revised full papers, selected from the 24 submissions to the OCS workshop held in conjunction with the First International Conference on Principles and Practice of Constraint Programming, CP '95, held in Marseilles in September 1995, the book includes three comprehensive background papers of central importance for the workshop papers and the whole field. Also included is an introduction by (...) one of the volume editors together with a bibliography listing 243 entries. All in all this is a very useful reference book relevant for all researchers and practitioners interested in hierarchical, partial, and over-constrained systems. (shrink)

This paper has three interdependent aims. The first is to make Reichenbach’s views on induction and probabilities clearer, especially as they pertain to his pragmatic justification of induction. The second aim is to show how his view of pragmatic justification arises out of his commitment to extensional empiricism and moots the possibility of a non-pragmatic justification of induction. Finally, and most importantly, a formal decision-theoretic account of Reichenbach’s pragmatic justification is offered in terms both of the minimax principle (...) and the dominance principle. (shrink)

The maximin rule can be used as a formal version of the precautionary principle. This paper evaluates the feasibility and the intuitive plausibility of this decision rule. The major conclusions are: (1) Precaution has to be applied symmetrically. (2) Precaution is only possible when outcomes are comparable in terms of value, so that it can be determined which outcome is worst. (3) Precaution is sensitive to standards of possibility. Far-away scenarios have to be excluded, and it is difficult to (...) find a principled way to draw the line. (4) Precaution is sensitive to the framing of decision problems. Local cautiousness may add up to global incautiousness. (shrink)

This paper presents a corrected version of Pascal's wager that makes it consonant with modern decision theory. The corrected wager shows that not committing to God's existence is the rational choice.

Objective Bayesianism says that the strengths of one’s beliefs ought to be probabilities, calibrated to physical probabilities insofar as one has evidence of them, and otherwise sufficiently equivocal. These norms of belief are often explicated using the maximum entropy principle. In this paper we investigate the extent to which one can provide a unified justification of the objective Bayesian norms in the case in which the background language is a first-order predicate language, with a view to applying the resulting (...) formalism to inductive logic. We show that the maximum entropy principle can be motivated largely in terms of minimising worst-case expected loss. (shrink)

It seems natural to think that compromises ought to be fair. But it is false. In this paper, I argue that it is never a moral desideratum to reach fair compromises and that we are sometimes even morally obligated to try to establish unfair compromises. The most plausible conception of the fairness of compromises is David Gauthier’s principle of minimax relative concession. According to that principle, a compromise is fair when all parties make equal concessions relative to (...) how much they can gain from an agreement and relative to how much they would lose without an agreement. To find out whether reaching a fair compromise sometimes is a moral desideratum, I discuss several paradigmatic cases in friendships, economics and politics, and I try to show that even when the parties have moral reasons to refrain from trying to maximize utility in the negotiations, they do not have moral reasons to aim at a fair compromise. My second claim is that we are sometimes morally obligated to try to establish unfair compromises, in particular when we are dealing with parties that try to establish morally very bad political arrangements. In such cases, we should try to concede as little as possible to achieve an outcome that is morally acceptable. Fair compromises, in other words, are morally much more dubious than is usually appreciated. (shrink)

Part I of this essay will be devoted to Gauthier's principle of minimax relative concession. Part II will focus, more generally, on the variety of possible strategies available to liberal theory. In Part I, I will argue that the principle of minimax relative concession does not define “essential justice” as Gauthier claims. In Part II, I will argue that the difficulties facing Gauthier's strategy are common to other strategies of die same general kind. I will close (...) by suggesting what I think may prove to be a more promising approach. (shrink)

I consider cases in which risk or ignorance create barriers to our discovery of what we ought to do. I argue that neither expected utility theory, nor the maximin principle, nor a timid gambling temperament, is relevant to discovering what we ought to do in one-off or infrequently recurring types of decisions involving risk, or to decisions involving ignorance. I argue, contra Kolodny and MacFarlane, that the miners case does not require us to give up any classical logical (...) class='Hi'>principle in order to avoid contradiction. I reject Graham’s claim that the appearance of contradiction depends upon a confusion between acting rightly and not being blameworthy. In the cases of risk and ignorance discussed, we cannot know what we ought to do; and any way of deciding what we shall do is objectively arbitrary even if it reflects our gambling temperament. Subjective probability and the subjective ought should be repudiated. (shrink)

Statistical decision theory, whether based on Bayesian principles or other concepts such as minimax or admissibility, relies on minimizing expected loss or maximizing expected utility. Loss and utility functions are generally treated as unit-less numerical measures of value for consequences. Here, we address the issue of the units in which loss and utility are settled and the implications that those units have on the rankings of potential decisions. When multiple currencies are available for paying the loss, one must take (...) explicit account of which currency is used as well as the exchange rates between the various available currencies. (shrink)

In this chapter, we turn to cooperation as the remedy for market failure, and to justice as the rational disposition to cooperative behaviour. Instead of each person choosing her own strategy, in cooperation persons agree on a single joint strategy choice leading to an optimal outcome. We argue that such a choice results from an ideal bargain among all persons, and offer an account of bargaining, in terms of the initial bargaining position, the claims rational persons would make from that (...) position, and the concessions they would then offer to achieve agreement on a joint strategy, yielding a fundamental principle labelled ‘minimax relative concession’. We then show that this principle is equivalent to ‘maximin relative benefit’, in which the smallest gain anyone receives, measured as a proportion of the gain he would receive from being granted his claim, is as great as possible. The principle of maximin relative benefit, we claim, captures the idea of impartiality in the distribution of the benefits of cooperation, and so is a principle of fairness or justice. Thus, rational bargaining and justice coincide. But we note that the question of determining the initial bargaining position remains to be resolved, both rationally and morally; this question is in fact the same as that of determining initial factor endowments, which we raised and deferred in the previous chapter. (shrink)

Presents an overview of the book, introducing the problem of showing the rationality of moral constraints, and the conception of rationality as maximization, which on the face of it seems incompatible with any form of constraint. We argue, however, that moral theory is part of the theory of rational choice, arising from the structure of interaction, in which persons recognize a role for agreed mutual constraint in bringing about fair mutual advantage. We contrast the maximizing conception of rationality with the (...) universalistic conception accepted by many philosophers, and our appeal to rational choice with the quite different appeals proposed by John Harsanyi and John Rawls. We introduce five key conceptions central to our theory: the idea of a morally free zone, the principle of minimax relative concession as the basis of justice, constrained maximization, the proviso, and the Archimedean point from which an individual can move the moral world. Finally, we raise questions about the scope of moral relationships and their place in an ideal human life. (shrink)

In this chapter, we consider some of the implications of our theory. We first discuss taxation to cover the cost of supplying pure public goods, suggesting that a flat tax may best fit the requirements of the principle of minimax relative concession. We show that the right to collect factor rent is not part of the liberty assured by either the proviso or minimax relative concession. We defend the right under the proviso of individuals to appropriate productive (...) resources originally held in common provided that in so doing they provide new and better opportunities for those affected. We discuss briefly the vexing problem of encounters between societies at very different levels of development, including the European appropriation of North America. We introduce four criteria to govern a partial ordering of ways of life in terms of advancement or human development: density of population; duration of life; material well‐being; and most important, breadth of opportunity. Finally, we discuss relations among persons of different generations, showing how the principle of minimax relative concession provides a way of determining the rational rate of investment, yielding steadily increasing well‐being. (shrink)

The Archimedean point is one from which a rational individual may exert the force needed to govern the moral realm, and hence one in which she must choose and act aware that she is a person with preferences but unaware of the content of those preferences, and so impartially. We contrast this person, the ideal actor, with other idealizing conceptions in moral theory, the noumenal self, the ideal observer, the ideal sympathizer, and the ideal proprietor. We then characterize choice from (...) the Archimedean point, rejecting the views of John Harsanyi and John Rawls, and arguing instead that the ideal actor would choose the proviso, the market in conditions of perfect competition, and the principle of minimax relative concession. Thus, analysis from the Archimedean point confirms the conclusions about rational choice reached in previous chapters. (shrink)

In his discussion of minimax decision rules, Savage presents an example purporting to show that minimax applied to negative expected utility is an inadequate decision criterion for statistics; he suggests the application of a minimax regret rule instead. The crux of Savage’s objection is the possibility that a decision maker would choose to ignore even “extensive” information. More recently, Parmigiani has suggested that minimax regret suffers from the same flaw. He demonstrates the existence of “relevant” experiments (...) that a minimax regret agent would never pay a positive cost to observe. On closer inspection, I find that minimax regret is more resilient to this critique than would first appear. In particular, there are cases in which no experiment has any value to an agent employing the minimax negative income rule, while we may always devise a hypothetical experiment for which a minimax regret agent would pay. The force of Parmigiani’s critique is further blunted by the observation that “relevant” experiments exist for which a Bayesian agent would never pay. I conclude with a discussion of pessimism in the context of minimax decision rules. (shrink)

Alfred North Whitehead was a prominent English mathematician and philosopher who co-authored the highly influential Principia Mathematica with Bertrand Russell. Originally published in 1919, and first republished in 1925 as this Second Edition, An Enquiry Concerning the Principles of Natural Knowledge ranks among Whitehead's most important works; forming a perspective on scientific observation that incorporated a complex view of experience, rather than prioritising the position of 'pure' sense data. Alongside companion volumes The Concept of Nature and The Principle of (...) Relativity, it created a framework for Whitehead's later metaphysical speculations. This is an important book that will be of value to anyone with an interest in the relationship between science and philosophy. (shrink)

Reflection Principles are commonly thought to produce only strong axioms of infinity consistent with V = L. It would be desirable to have some notion of strong reflection to remedy this, and we have proposed Global Reflection Principles based on a somewhat Cantorian view of the universe. Such principles justify the kind of cardinals needed for, inter alia , Woodin’s Ω-Logic.

I show that centered propositions—also called de se propositions, and usually modeled as sets of centered worlds—pose a serious problem for various versions of Lewis's Principal Principle. The problem, put roughly, is that in scenarios like Elga's `Sleeping Beauty' case, those principles imply that rational agents ought to have obviously irrational credences. To solve the problem, I propose a centered version of the Principal Principle. My version allows centered propositions to be objectively chancy.

In this article we critically examine the principle of equivalence of care in prison medicine. First, we provide an overview of how the principle of equivalence is utilized in various national and international guidelines on health care provision to prisoners. Second, we outline some of the problems associated with its applications, and argue that the principle of equivalence should go beyond equivalence to access and include equivalence of outcomes. However, because of the particular context of the prison (...) environment, third, we contend that the concept of “health” in equivalence of health outcomes needs conceptual clarity; otherwise, it fails to provide a threshold for healthy states among inmates. We accomplish this by examining common understandings of the concepts of health and disease. We conclude our article by showing why the conceptualization of diseases as clinical problems provides a helpful approach in the delivery of health care in prison. (shrink)

Theories of phenomenal intentionality have been claimed to resolve certain worries about the indeterminacy of mental content that rival, externalist theories face. Thus far, however, such claims have been largely programmatic. This paper aims to improve on prior arguments in favor of phenomenal intentionality by using attention and Gestalt principles as specific examples of factors that influence the phenomenal character of perceptual experience in ways that thereby help determine perceptual content. Some reasons are then offered for rejecting an alternative interpretation (...) of these examples, according to which the phenomenal effects of attention and Gestalt principles play no role in the determination of perceptual content. (shrink)

Over the course of its first seven editions, Principles of Biomedical Ethics has proved to be, globally, the most widely used, authored work in biomedical ethics. It is unique in being a book in bioethics used in numerous disciplines for purposes of instruction in bioethics. Its framework of moral principles is authoritative for many professional associations and biomedical institutions-for instruction in both clinical ethics and research ethics. It has been widely used in several disciplines for purposes of teaching in the (...) classroom, during conferences, etc. (shrink)

Book reviewed in this article: Principles of Biomedical Ethics. By Tom L. Beauchamp and James F. Childress.

In this study Friedrich Waismann gives a systematic presentation of insights into philosophical problems which can be achieved by clarifying the language in which the problems are posed. Much of the material and the method itself derive from Wittgenstein's work in the early 30s. The book was originally envisaged as a lucid and well organized account of Wittgenstein's distinctive form of linguistic philosophy to enable the Vienna Circle to incorporate these valuable methods into their own programme of analysis. The project (...) evolved over many years into a wide-ranging survey of the dissolution of many philosophical problems and the construction of a systematic philosophical grammar. Waismann shows in detail how puzzlement can be removed by careful description of the uses of the terms employed in framing problems. At the same time, he sketches a general framework for analysis of language, including chapters on names, general terms, logical operators, propositions, questions, etc. This book is an authoritative presentation of Wittgenstein's influential philosophy of language in a format much easier to follow than his own intricate and elusive texts. Waismann exhibits clearly the merits of this method of philosophizing. This book should serve as an important and useful text for those who wish to understand the method and power of linguistic philosophy. It has no equal as an introduction to Wittgenstein's philosophy. (shrink)

THE PRINCIPLE OF SUPERPOSITION. The need for a quantum theory Classical mechanics has been developed continuously from the time of Newton and applied to an ...

The free-energy principle states that all systems that minimize their free energy resist a tendency to physical disintegration. Originally proposed to account for perception, learning, and action, the free-energy principle has been applied to the evolution, development, morphology, anatomy and function of the brain, and has been called a postulate, an unfalsifiable principle, a natural law, and an imperative. While it might afford a theoretical foundation for understanding the relationship between environment, life, and mind, its epistemic status (...) is unclear. Also unclear is how the free-energy principle relates to prominent theoretical approaches to life science phenomena, such as organicism and mechanism. This paper clarifies both issues, and identifies limits and prospects for the free-energy principle as a first principle in the life sciences. (shrink)

According to the Principle of Sufficient Reason (henceforth ‘PSR’), everything has an explanation or sufficient reason. This paper addresses three questions. First, how continuous is the contemporary notion of grounding with the notion of sufficient reason endorsed by Spinoza, Leibniz, and other rationalists? In particular, does a PSR formulated in terms of ground retain the intuitive pull and power of the PSR endorsed by the rationalists? Second, to what extent can the PSR avoid the formidable traditional objections levelled against (...) it if it is formulated in terms of ground? And finally, how might historical discussion of the PSR shed light on the contemporary notion of grounding? (shrink)

Principles of Philosophy was written in Latin by Rene Descartes. Published in 1644, it was intended to replace Aristotle's philosophy and traditional Scholastic Philosophy. This volume contains a letter of the author to the French translator of the Principles of Philosophy serving for a Preface and a letter to the most serene princess, Elizabeth, eldest daughter of Frederick, King of Bohemia, Count Palatine, and Elector of the Sacred Roman Empire. Principes de philosophie, by Claude Picot, under the supervision of Descartes, (...) appeared in 1647 with a letter-preface to Queen Christina of Sweden. (shrink)

Moral philosophy has long been dominated by the aim of understanding morality and the virtues in terms of principles. However, the underlying assumption that this is the best approach has received almost no defence, and has been attacked by particularists, who argue that the traditional link between morality and principles is little more than an unwarranted prejudice. In Principled Ethics, Michael Ridge and Sean McKeever meet the particularist challenge head-on, and defend a distinctive view they call "generalism as a regulative (...) ideal.". (shrink)