Objective Bayesianism is a methodological theory that is currently applied in statistics, philosophy, artificial intelligence, physics and other sciences. This book develops the formal and philosophical foundations of the theory, at a level accessible to a graduate student with some familiarity with mathematical notation.

While there are several arguments on either side, it is far from clear as to whether or not countable additivity is an acceptable axiom of subjective probability. I focus here on de Finetti's central argument against countable additivity and provide a new Dutch book proof of the principle, To argue that if we accept the Dutch book foundations of subjective probability, countable additivity is an unavoidable constraint.

Desde su publicación en el año 2001, el libro de Juan Aranzadi, El escudo de Arquíloco, ha provocado distintas críticas, especialmente centradas en las consecuencias morales y políticas de la justificación de una ética para fugitivos, la cual sitúa el valor supremo en la defensa de la vida, a cualquier precio. En esta nota se ofrece una aproximación a sus principales tesis acompañadas de las impugnaciones que les han dirigido Patxo Unzueta, Edurne Uriarte, Jon Juaristi y Aurelio Arteta, en (...) la estrategia de lucha contra el terrorismo, el impulso de la participación ciudadana en la sociedad vasca, las actitudes de resistencia ante la dominación y el valor de la ética y la ética de los valores, respectivamente. (shrink)

Bayesian probability is normally defined over a fixed language or eventspace. But in practice language is susceptible to change, and thequestion naturally arises as to how Bayesian degrees of belief shouldchange as language changes. I argue here that this question poses aserious challenge to Bayesianism. The Bayesian may be able to meet thischallenge however, and I outline a practical method for changing degreesof belief over changes in finite propositional languages.

The present volume collects some of Barwise's papers written since then, those directly concerned with relations among logic, situation theory, and situation semantics. Several papers appear here for the first time.

I discuss three recent counterexamples to the transitivity of grounding due to Jonathan Schaffer. I argue that the counterexamples don’t work and draw some conclusions about the relationship between grounding and explanation.

This paper addresses the question: Who or what can have a moral status in the sense that we have direct moral duties to them? It argues for a biocentric answer which ascribes inherent moral status value to all individual living organisms. This position must be defended against an anthropocentric position. The argument from marginal cases propounded by Tom Regan and Peter Singer for this purpose is criticised as defective, and a different argument is proposed. The biocentric position developed here is (...) related to that of Albert Schweitzer and Paul F. Taylor, but rejects their assumption of equal inherent value for all living organisms. It argues instead for equal moral status value for moral persons and agents, and gradual moral status value for nonpersons, depending on their degree of similarity with moral persons. Mary Ann Warren's recent book on Moral Status is also discussed. The argument is constructed as a casuistic argument, proceeding by analogical extension from persons to non-persons. The meta-ethical question of its pragmatic validity is discussed. (shrink)

The Recursive Bayesian Net (RBN) formalism was originally developed for modelling nested causal relationships. In this paper we argue that the formalism can also be applied to modelling the hierarchical structure of mechanisms. The resulting network contains quantitative information about probabilities, as well as qualitative information about mechanistic structure and causal relations. Since information about probabilities, mechanisms and causal relations is vital for prediction, explanation and control respectively, an RBN can be applied to all these tasks. We show in particular (...) how a simple two-level RBN can be used to model a mechanism in cancer science. The higher level of our model contains variables at the clinical level, while the lower level maps the structure of the cell's mechanism for apoptosis. (shrink)

Part I of this paper introduces a range of mechanistic theories of causality, including process theories and the complex-systems theories, and some of the problems they face. Part II argues that while there is a decisive case against a purely mechanistic analysis, a viable theory of causality must incorporate mechanisms as an ingredient, and describes one way of providing an analysis of causality which reaps the rewards of the mechanistic approach without succumbing to its pitfalls.

Logic is a field studied mainly by researchers and students of philosophy, mathematics and computing. Inductive logic seeks to determine the extent to which the premises of an argument entail its conclusion, aiming to provide a theory of how one should reason in the face of uncertainty. It has applications to decision making and artificial intelligence, as well as how scientists should reason when not in possession of the full facts. In this work, Jon Williamson embarks on a quest to (...) find a general, reasonable, applicable inductive logic (GRAIL), all the while examining why pioneers such as Ludwig Wittgenstein and Rudolf Carnap did not entirely succeed in this task. (shrink)

Covers first-order language in method appropriate for first and second courses in logic. CD-ROM consists of a new book, 3 programs,and an Internet-based grading service.

It is tempting to analyse causality in terms of just one of the indicators of causal relationships, e.g., mechanisms, probabilistic dependencies or independencies, counterfactual conditionals or agency considerations. While such an analysis will surely shed light on some aspect of our concept of cause, it will fail to capture the whole, rather multifarious, notion. So one might instead plump for pluralism: a different analysis for a different occasion. But we do not seem to have lots of different concepts of cause (...) – just one eclectic notion. The resolution of this conundrum, I think, requires us to accept that our causal beliefs are generated by a wide variety of indicators, but to deny that this variety of indicators yields a variety of concepts of cause. This focus on the relation between evidence and causal beliefs leads to what I call epistemic causality. Under this view, certain causal beliefs are appropriate or rational on the basis of observed evidence; our notion of cause can be understood purely in terms of these rational beliefs. Causality, then, is a feature of our epistemic representation of the world, rather than of the world itself. This yields one, multifaceted notion of cause. (shrink)

In this paper I want to discuss a well-known but poorly understood problem: how can socialists reconcile the observed paucity of cooperatives in capitalist societies with their alleged superiority on normative grounds? If cooperatives are so desirable, why don't workers desire them? If one's ideal of socialism is central planning, it is clear enough that it cannot emerge gradually within the womb of the capitalist economy. If instead it is something like market socialism, it is not clear that a discontinuous (...) transformation of society is required. If workers want socialism, they can start up here and now. If they don't, doesn't it prove that they do not want it? I shall proceed as follows. Section I argues that the usual explanation - that cooperatives are not economically viable or that workers prefer working in capitalist firms – is not necessarily correct. The explanation may lie elsewhere, in endogenous preference formation, adverse selection, discrimination, or externalities. Section II is concerned with the variety of cooperative arrangements. Only rarely do we find cooperatives in their pure form, with all workers and only workers having equal ownership rights. Non-working owners, non-owning workers and unequal distribution of shares are frequent. When the deviations become sufficiently large, the firms cease to become cooperatives in any meaningful sense. Section III extends the argument of Section I by surveying the causes of cooperative failure. Some fail by success: profitable cooperatives often attract or turn into private ownership. Others fail outright, partly because they tend to be established under unfavorable circumstances and partly because of intrinsic difficulties of management. (shrink)

In this paper a model in particle dynamics of a well-known supertask is constructed. As a consequence, a new and simple result about the failure of determinism of classical particle dynamics can be proved which is related to the non-existence of boundary conditions at spatial infinity. This result is much more accessible to the non-technical reader than similar ones in the scientific literature.

Salmon was the first to speak explicitly of paradoxes of kinematics. In this short note I introduce a new class of infinity puzzles. Following natural terminology, they should actually be called static paradoxes.

I. SummaryRuth Boeker's Locke on Persons and Personal Identity is a profound treatment of Locke's views on the nature and identity of human persons. The book is divided roughly into two halves. The first half (Chapters 1–6 and 8) focuses on providing a philosophically sophisticated interpretation of Locke that engages with the most recent secondary literature. Chapter 3, for instance, includes an important contribution to scholarly debates about Locke's sortal-relative account of identity in the Essay II.xxvii.§7–8. Some (the coincidence theorists) (...) have argued that Locke's claim that there are different persistence conditions for a ‘man’ (human animal) and the ‘mass of matter’ that occupies the same spatio-temporal location as the man entails that there are two, coincident material objects. Others (the relative identity theorists) argue that Locke holds that there is ontologically one and only one material object at any spatio-temporal location—a single object that can be attributed different identity conditions when considered under different sortals. (shrink)

Practical reasoning requires decision—making in the face of uncertainty. Xenelda has just left to go to work when she hears a burglar alarm. She doesn’t know whether it is hers but remembers that she left a window slightly open. Should she be worried? Her house may not be being burgled, since the wind or a power cut may have set the burglar alarm off, and even if it isn’t her alarm sounding she might conceivably be being burgled. Thus Xenelda can (...) not be certain that her house is being burgled, and the decision that she takes must be based on her degree of certainty, together with the possible outcomes of that decision. (shrink)

After introducing a range of mechanistic theories of causality and some of the problems they face, I argue that while there is a decisive case against a purely mechanistic analysis, a viable theory of causality must incorporate mechanisms as an ingredient. I describe one way of providing an analysis of causality which reaps the rewards of the mechanistic approach without succumbing to its pitfalls.

When a proposition is established, it can be taken as evidence for other propositions. Can the Bayesian theory of rational belief and action provide an account of establishing? I argue that it can, but only if the Bayesian is willing to endorse objective constraints on both probabilities and utilities, and willing to deny that it is rationally permissible to defer wholesale to expert opinion. I develop a new account of deference that accommodates this latter requirement.

Preservation and interpolation results are obtained for L ∞ω and sublogics $\mathscr{L} \subseteq L_{\infty\omega}$ such that equivalence in L can be characterized by suitable back-and-forth conditions on sets of partial isomorphisms.

In this paper a simple model in particle dynamics of a well-known supertask is constructed (the supertask was introduced by Max Black some years ago). As a consequence, a new and simple result about creation ex nihilo of particles can be proved compatible with classical dynamics. This result cannot be avoided by imposing boundary conditions at spatial infinity, and therefore is really new in the literature. It follows that there is no reason why even a world of rigid spheres should (...) be eternal, as has been erroneously assumed, especially since the time of Newton. (shrink)

The moral psychology of sympathy is the linchpin of the sentimentalist moral theories of both David Hume and Adam Smith. In this paper, I attempt to diagnose the critical differences between Hume's and Smith's respective accounts of sympathy in order to argue that Smithian sympathy is more properly suited to serve as a basis for impartial moral evaluations and judgments than is Humean sympathy. By way of arguing this claim, I take up the problem of overcoming sympathetic partiality in the (...) construction of a moral point of view, acknowledged by both writers, as my primary platform. My contention is that Humean sympathy is too mechanistic to actually deliver an impartial adjudicatory perspective, and that Smithian sympathy, with its evaluative, imaginative components, succeeds where Hume's account falls short. The paper is comprised of six sections: (i) introductory remarks, (ii) a discussion of Humean sympathy, (iii) a discussion of Smithian sympathy and its distinctness, (iv) a critical analysis of Hume's attempt to correct for sympathetic partiality in the construction of the judicial spectator's general point of view, (v) a critical discussion of sympathetic partiality in Smithian sympathy & (vi) a critical analysis of Smith's construction of the impartial spectator perspective as a moral point of view. (shrink)

Based on an analysis of a fundamental distinction between metaphors of ’finding‘ versus ’making‘ for the obtaining of new knowledge, a number of constructivist positions in education are discussed and criticised, taking account of earlier criticism particularly by Suchting and by Matthews. Constructivist claims which are denied include the claim that we have no direct access to the world, and the claim that communication is inherently meaningless. What is valuable in constructivism, namely the insistence on active learning, on respect for (...) the pupil‘s own thinking, and on the high priority needed for ideas taught to make sense to pupils, together with the reminder that science is a human product, is important to retain without its additional and ill-founded philosophical baggage. (shrink)

Although the impact of so-called “sponsorship bias” has been the subject of increased attention in the philosophy of science, what exactly constitutes its epistemic wrongness is still debated. In this paper, I will argue that neither evidential accounts nor social–epistemological accounts can fully account for the epistemic wrongness of sponsorship bias, but there are good reasons to prefer social–epistemological to evidential accounts. I will defend this claim by examining how both accounts deal with a paradigm case from medical epistemology, recently (...) discussed in a paper by Bennett Holman. I will argue that evidential accounts cannot adequately capture cases of sponsorship bias that involve the manufacturing of certainty because of their neutrality with respect to the role of non-epistemic values in scientific practice. If my argument holds, it further highlights the importance of integrating social and ethical concerns into epistemological analysis, especially in applied contexts. One can only properly grasp sponsorship bias as an epistemological problem if one resists the methodological tendency to analyze social, ethical, and epistemological issues in isolation from each other. (shrink)

A traditional ethic of medicine asserts that physicians have special obligations to individual patients with whom they have a clinical relationship. Contemporary trends in US healthcare financing like bundled payments seem to threaten traditional conceptions of special obligations of individual physicians to individual patients because their population-based focus sets a tone that seems to emphasise responsibilities for groups of patients by groups of physicians in an organisation. Prior to undertaking a cogent debate about the fate and normative weight of special (...) obligations and a traditional ethic for contemporary healthcare, we need a deeper examination of what the traditional ethic of special obligations really means. Here we offer a conception of ‘doubly distributed’ special obligations. Physicians and similarly minded healing professionals abiding by a traditional ethic have always spread their devotion and attention across multiple patients and have shared responsibilities with physician and non-physician colleagues in much the same way devoted parents have frequently distributed their special obligations across multiple children and across multiple parents. By taking up the extended analogy of parent we argue that doubly distributing special obligations need not contradict the possibility of special obligations in restructured collective forms of healthcare delivery and financing. (shrink)

Important discussions about limiting care based on professional judgment often devolve into heated debates over the place of physicians in bedside rationing. Politics, loaded rhetoric, and ideological caricature from both sides of the rationing debate obscure precise points of disagreement and consensus, and hinder critical dialogue around the obligations and boundaries of professional practice. We propose a way forward by reframing the rationing conversation, distinguishing between the scale of the decision and its context avoiding the word “rationing.” We propose to (...) shift the terminology, using specific, descriptive words to defuse conflict and re-focus the debate towards substantive issues. These distinctions can clarify the real ethical differences at stake and facilitate a more constructive conversation about the clinical and social responsibilities of physicians to use resources ethically at the bedside and their role in allocating medical resources at a societal level. (shrink)

We first discuss Michael Dummett’s philosophy of mathematics and Robert Brandom’s philosophy of language to demonstrate that inferentialism entails the falsity of Church’s Thesis and, as a consequence, the Computational Theory of Mind. This amounts to an entirely novel critique of mechanism in the philosophy of mind, one we show to have tremendous advantages over the traditional Lucas-Penrose argument.

Objective Bayesian probability is often defined over rather simple domains, e.g., finite event spaces or propositional languages. This paper investigates the extension of objective Bayesianism to first-order logical languages. It is argued that the objective Bayesian should choose a probability function, from all those that satisfy constraints imposed by background knowledge, that is closest to a particular frequency-induced probability function which generalises the λ = 0 function of Carnap’s continuum of inductive methods.

We show that several theorems on ordinal bounds in different parts of logic are simple consequences of a basic result in the theory of global inductive definitions.

"In his The Condition of the Working Class in England, Friedrich Engels outlines systematically the miseries of the workers in England in the context of industrialization. A key to his argument concerns the interface between the human body and the machine. In this article I argue that Engels provides a kind of a phenomenology of the body in his analyses of the relation of the worker to the new machines. The limited secondary literature on Marxism and phenomenology has not been (...) attentive to the detailed attention that is given to the body of the worker in this book. Keywords: handwork, machines, technology, Industrial Revolution, Friedrich Engels, factory work ". (shrink)

Hegel's _Phenomenology_ is considered by many to be the most difficult book in the philosophical canon. While some authors have published excellent essays on various chapters and aspects of the book, few authors have successfully tackled the whole. In _The Unity of Hegel's "Phenomenology of Spirit_", Jon Stewart interprets Hegel's work as a dialectical transformation of Kantian transcendental philosophy, providing from this unified standpoint a case for Hegel's own conception of philosophy as a system. In restoring them to their larger (...) systematic contexts, Stewart clarifies Hegel's individual analyses, as well as indicating the meaning and significance of the transitions and illustrating the parallelisms between the respective analyses. Many of Hegel's main themes- universal-particular, mediacy-immediacy-are traced through the text, demonstrating Hegel's formal continuity. By examining at the microlevel the particulars of the dialectical movement, and by analyzing at the macrolevel the role of the argument in question in the context of the work as a whole, Stewart provides a detailed analysis of the _Phenomenology_ and a significant scholarly demonstration of Hegel's own conception of the _Phenomenology_ as a part of a systematic philosophy. (shrink)

This article argues that the concept of evil is needed in normative ethics in general as well as in the professional ethics of social work. Attention is drawn to certain shortcomings in the classical theories of normative ethics when it comes to recognizing the profound destructiveness of certain types of acts that exceed the mere ?bad? or ?wrong? applied in the most common theories of moral philosophy. Having established the category of morally evil acts in general, the author turns to (...) the field of social work and applies it to some paradigm cases of evil that many social workers are likely to be confronted with during the course of their service. In the final part of the article, the concept of moral evil is discussed in relation to the professional ethics of social work in general, with reference to certain value assumptions that are found to be inherent to social work. (shrink)

Mental Processes in the Human Brain provides an integrative overview of the rapid advances and future challenges in understanding the neurobiological basis of mental processes that are characteristically human. With chapters from leading figures in the brain sciences, it will be essential for all those in the cognitive and brain sciences.

Over the last decade or so, political scientists and legal academics have begun studying the linkages between ideologies, on one hand, and legal principles and policy outcomes on the other. This book is the first to bring many of the world's experts on those topics together to examine the sometimes unsettling interactions between psychology, ideology, and law.

Abstract Scholars find that political elites are badly polarized over a large range of policy issues, but they tend to agree that the mass public is much more ambivalent. The abortion war in particular is regarded as one in which millions of ambivalent citizens are caught in the crossfire of polarized activists. Yet even abortion activists struggle to escape the very ambivalent sentiments that plague ordinary Americans. These common sentiments even exert a moderating influence on both movements in ways that (...) are consistent with the preferences of the American public. They also suggest that liberalism may be mired in permanent conflict and ambivalence over the scope of basic human rights. (shrink)