This paper contributes to the mathematical foundations of the model for utility theory developed by Richard Jeffrey in The Logic of Decision [5]. In it I discuss the relationship of Jeffrey's to classical models, state and interpret an existence theorem for numerical utilities and subjective probabilities and restate a theorem on their uniqueness.

In this paper I discuss some of the mathematics behind an often quoted existence theorem from Richard Jeffrey's The Logic of Decision (Jeffrey 1990) in order to pose several new questions about the meaning and value of that mathematics for decision theory.

Consider a group of people whose preferences satisfy the axioms of one of the current versions of utility theory, such as von Neumann-Morgenstern (1944), Savage (1954), or Bolker-Jeffrey (1965). There are political and economic contexts in which it is of interest to find ways of aggregating these individual preferences into a group preference ranking. The question then arises of whether methods of aggregation exist in which the group’s preferences also satisfy the axioms of the chosen utility (...) class='Hi'>theory, and in which at the same time the aggregation process satisfies certain plausible conditions (e.g., the Pareto conditions below). (shrink)

Suppose n Bayesian agents need to make a decision as a group. The groupas a whole is also supposed to be a Bayesian agent whose probabilities andutilities are derived or aggregated in reasonable ways from the probabilitiesand utilities of the group members. The aggregation could beex ante, i.e., interms of expected utilities, or it could be ex post, i.e., in terms of utilitiesonly, or in terms of utilities and probabilities separately. This study exploresthe ex post approach. Using the Bolker/ (...) class='Hi'>Jeffrey framework, we show thatex post aggregation is subject to an instability phenomenon. That is, it mayhappen that the group preference between actions ``flips back and forth'''' dependingon the level of detail in which the decision problem is described. Structurally verysimilar phenomena also occur elsewhere in social choice theory, in statistics (Simpson''sParadox), and in voting theory (Ostrogorski''s Paradox). (shrink)

In Richard Bradley’s book, Decision Theory with a Human Face, we have selected two themes for discussion. The first is the Bolker-Jeffrey theory of decision, which the book uses throughout as a tool to reorganize the whole field of decision theory, and in particular to evaluate the extent to which expected utility theories may be normatively too demanding. The second theme is the redefinition strategy that can be used to defend EU theories against the Allais (...) and Ellsberg paradoxes, a strategy that the book by and large endorses, and even develops in an original way concerning the Ellsberg paradox. We argue that the BJ theory is too specific to fulfil Bradley’s foundational project and that the redefinition strategy fails in both the Allais and Ellsberg cases. Although we share Bradley’s conclusion that EU theories do not state universal rationality requirements, we reach it not by a comparison with BJ theory, but by a comparison with the non-EU theories that the paradoxes have heuristically suggested. (shrink)

The concept of homology arose from classical studies of comprative morphology, and took on a new signficance with the advent of evolutionary theory. It is currentlyl undergoing antoher metamorphosis: many developmental geneticists now dfine homology as shared patterns of gene expression. However, this ne usage conflaes difinition with criteri, and fails to recognize the meaninful asignments of homology must speify a biologcal level. We argue the although developmental genetic data can help identify homologus structures. they are niether necessary nor (...) sufficient, and do not in any case jutify a new definition of homology. (shrink)

Evolutionary developmental biologists categorize many different kinds of things, from ontogenetic stages to modules of gene activity. The process of categorization—the establishment of “kinds”—is an implicit part of describing the natural world in consistent, useful ways, and has an essentially practical rather than philosophical basis. Kinds commonly serve one of three purposes: they may function (1) as practical tools for communication; (2) to support prediction and generalization; or (3) as a basis for theoretical discussions. Beyond the minimal requirement that classifications (...) reflect biological reality, what sorts of kinds or classification will be useful in advancing a research program depends on the epistemological context. Thus, the important meaning of “natural” in “natural kinds” is not “natural with respect to nature,” but “natural with respect to the question.” This conclusion arises from the recognition that the proper role of concepts (e.g. natural kind, module, homology, model) is not to answer biological questions, but rather to help frame them. From a scientist’s perspective, arguing about the wording (or existence) of a single definition of “natural” or “kind” is beside the point: we get more work done by letting the question at hand determine what kinds of kinds are natural, on the basis of their ability to help answer it. We should be content to let “natural kinds” remain vague, multivalent, and–therefore broadly useful. For a philosopher like Hacking, the diverse, disparate, and ultimately incommensurable uses of the term “natural kind” have diluted its value so far that it loses all meaning. For practicing scientists, however, defining useful kinds in the context of particular questions and systems remains a productive epistemological strategy. (shrink)

Richard Jeffrey is beyond dispute one of the most distinguished and influential philosophers working in the field of decision theory and the theory of knowledge. His work is distinctive in showing the interplay of epistemological concerns with probability and utility theory. Not only has he made use of standard probabilistic and decision theoretic tools to clarify concepts of evidential support and informed choice, he has also proposed significant modifications of the standard Bayesian position in order that (...) it provide a better fit with actual human experience. Probability logic is viewed not as a source of judgment but as a framework for explaining the implications of probabilistic judgments and their mutual compatability. This collection of essays spans a period of some 35 years and includes what have become some of the classic works in the literature. There is also one completely new piece, while in many instances Jeffrey includes afterthoughts on the older essays. (shrink)

Could space consist entirely of extended regions, without any regions shaped like points, lines, or surfaces? Peter Forrest and Frank Arntzenius have independently raised a paradox of size for space like this, drawing on a construction of Cantor’s. I present a new version of this argument and explore possible lines of response.

People with the kind of preferences that give rise to the St. Petersburg paradox are problematic---but not because there is anything wrong with infinite utilities. Rather, such people cannot assign the St. Petersburg gamble any value that any kind of outcome could possibly have. Their preferences also violate an infinitary generalization of Savage's Sure Thing Principle, which we call the *Countable Sure Thing Principle*, as well as an infinitary generalization of von Neumann and Morgenstern's Independence axiom, which we call *Countable (...) Independence*. In violating these principles, they display foibles like those of people who deviate from standard expected utility theory in more mundane cases: they choose dominated strategies, pay to avoid information, and reject expert advice. We precisely characterize the preference relations that satisfy Countable Independence in several equivalent ways: a structural constraint on preferences, a representation theorem, and the principle we began with, that every prospect has a value that some outcome could have. (shrink)

This book offers a concise survey of basic probability theory from a thoroughly subjective point of view whereby probability is a mode of judgment. Written by one of the greatest figures in the field of probability theory, the book is both a summation and synthesis of a lifetime of wrestling with these problems and issues. After an introduction to basic probability theory, there are chapters on scientific hypothesis-testing, on changing your mind in response to generally uncertain observations, (...) on expectations of the values of random variables, on de Finetti's dissolution of the so-called problem of induction, and on decision theory. (shrink)

Decision theorists widely accept a stochastic dominance principle: roughly, if a risky prospect A is at least as probable as another prospect B to result in something at least as good, then A is at least as good as B. Recently, philosophers have applied this principle even in contexts where the values of possible outcomes do not have the structure of the real numbers: this includes cases of incommensurable values and cases of infinite values. But in these contexts the usual (...) formulation of stochastic dominance is wrong. We show this with several counterexamples. Still, the motivating idea behind stochastic dominance is a good one: it is supposed to provide a way of applying dominance reasoning in the stochastic context of probability distributions. We give two new formulations of stochastic dominance that are more faithful to this guiding idea, and prove that they are equivalent. (shrink)

Few notions are more central to Aquinas’s thought than those of matter and form. Although he invokes these notions in a number of different contexts, and puts them to a number of different uses, he always assumes that in their primary or basic sense they are correlative both with each other and with the notion of a “hylomorphic compound”—that is, a compound of matter (hyle) and form (morphe). Thus, matter is an entity that can have form, form is an entity (...) that can be had by matter, and a hylomorphic compound is an entity that exists when the potentiality of some matter to have form is actualized.1 What is more, Aquinas assumes that the matter of a hylomorphic compound explains certain of its general characteristics, whereas its form explains certain of its more specific characteristics. Thus, the matter of a bronze statue explains the fact that it is bronze, whereas its form explains the fact that it is a statue. Again, the matter of a human being explains the fact that it is a material object, whereas its form explains the specific type of material object it is (namely, human). My aim in this chapter is to provide a systematic introduction to Aquinas’s primary or basic notions of matter and form. To accomplish this aim, I focus on the two main theoretical contexts in which he deploys them—namely, his theory of change and his theory of individuation. In both contexts, as we shall see, Aquinas appeals to matter and form to account for relations of sameness and difference holding between distinct individuals. (shrink)

Jeffrey Barrett presents the most comprehensive study yet of a problem that has puzzled physicists and philosophers since the 1930s.

Eliminativists sometimes invoke evolutionary debunking arguments against ordinary object beliefs, either to help them establish object skepticism or to soften the appeal of commonsense ontology. I argue that object debunkers face a self-defeat problem: their conclusion undermines the scientific support for one of their premises, because evolutionary biology depends on our object beliefs. Using work on reductionism and multiple realizability from the philosophy of science, I argue that it will not suffice for an eliminativist debunker to simply appeal to some (...) object-free surrogate theory of evolution that results from converting any scientific proposition about some object K into a proposition about simples arranged K-wise. In the process, I examine some hazards peculiar to eliminative reductions of scientific theories, and propose a trilemma for eliminativists who attempt to recoup generality for ontologically sparse reducing theories by appealing to pluralities of simples arranged K-wise. The paper is intended to define and develop the object debunker’s self-defeat problem for further study, and to clarify some of the ways sparse and abundant ontologies interact with scientific theory. (shrink)

We prove a representation theorem for preference relations over countably infinite lotteries that satisfy a generalized form of the Independence axiom, without assuming Continuity. The representing space consists of lexicographically ordered transfinite sequences of bounded real numbers. This result is generalized to preference orders on abstract superconvex spaces.

It is often claimed (1) that levels of nature are related by supervenience, and (2) that processes occurring at particular levels of nature should be studied using dynamical systems theory. However, there has been little consideration of how these claims are related. To address the issue, I show how supervenience relations give rise to ‘supervenience functions’, and use these functions to show how dynamical systems at different levels are related to one another. I then use this analysis to describe (...) a graded approach to non-reductive physicalism, and to critically assess Davidson’s arguments for psychological anomaly. I also show how this approach can inform empirical research in cognitive science. (shrink)

I examine what the mathematical theory of random structures can teach us about the probability of Plenitude, a thesis closely related to David Lewis's modal realism. Given some natural assumptions, Plenitude is reasonably probable a priori, but in principle it can be (and plausibly it has been) empirically disconfirmed—not by any general qualitative evidence, but rather by our de re evidence.

This chapter presents the main formalism of the book, which is used in subsequent chapters to describe a variety of concepts in Husserlian phenomenology, and thereby unify them. A dynamical systems approach to Husserl is introduced, and several dynamical laws of Husserlian phenomenology are described. The first is an expectation rule according to which expectations are determined by what a person knows, sees, and does. The second is a learning rule according to which background knowledge is updated in a specific (...) way when experiences fulfill or frustrate prior expectations. In addition to these rules, a “supervenience function” is described, which associates how a thing is seen with a “trail set,” the set ways that thing is expected to look, relative to all possible ways of moving around it. This function further illustrates the explanatory dimension of phenomenology described in Chap. 2, whereby how we immanently experience things is determined by how we expect them to look relative to counterfactual movement patterns. (shrink)

This article rehearses Derrida’s articulation in Theory and Practice of an analogy between Althusser’s and Heidegger’s treatments of the theory/practice pair. The analogy motivates a question about what remains for thinking and acting in the wake of Marx’s 11th Thesis on Feuerbach, when the traditional sovereignty of theory over practice becomes untenable. In the seminar, Derrida develops a line of inquiry about the edge distinguishing theory from practice, which philosophy would presumably over????low as it ceases to (...) merely interpret the world and begins to change it. The article shows how Derrida’s analogy between Marxist philosophy and Heideggerian thinking exposes some pitfalls of any attempt to definitively escape prescientific philosophy or metaphysics while also opening up the possibility of allying Heidegger’s destruction of technological humanism and retrieval of an originary ethics with the Marxian imperative to change the world. (shrink)

Alexis de Tocqueville once wrote that "the people reign over the American political world like God over the universe," unwittingly casting democracy as the political instantiation of the death of God. According to Jeffrey W. Robbins, Tocqueville's assessment remains an apt observation of modern democratic power, which does not rest with a sovereign authority but operates as a diffuse social force. By linking radical democratic theory to a contemporary fascination with political theology, Robbins envisions the modern experience of (...) democracy as a social, cultural, and political force transforming the nature of sovereign power and political authority. Robbins joins his work with Michael Hardt and Antonio Negri's radical conception of "network power," as well as Sheldon Wolin's notion of "fugitive democracy," to fashion a political theology that captures modern democracy's social and cultural torment. This approach has profound implications not only for the nature of contemporary religious belief and practice but also for the reconceptualization of the proper relationship between religion and politics. Challenging the modern, liberal, and secular assumption of a neutral public space, Robbins conceives of a postsecular politics for contemporary society that inextricably links religion to the political. While effectively recasting the tradition of radical theology as a political theology, this book also develops a comprehensive critique of the political theology bequeathed by Carl Schmitt. It marks an original and visionary achievement by the scholar the _Journal of the American Academy of Religion_ hailed "one of the best commentators on religion and postmodernism.". (shrink)

Alexis de Tocqueville once wrote that "the people reign over the American political world like God over the universe," unwittingly casting democracy as the political instantiation of the death of God. According to Jeffrey W. Robbins, Tocqueville's assessment remains an apt observation of modern democratic power, which does not rest with a sovereign authority but operates as a diffuse social force. By linking radical democratic theory to a contemporary fascination with political theology, Robbins envisions the modern experience of (...) democracy as a social, cultural, and political force transforming the nature of sovereign power and political authority. Robbins joins his work with Michael Hardt and Antonio Negri's radical conception of "network power," as well as Sheldon Wolin's notion of "fugitive democracy," to fashion a political theology that captures modern democracy's social and cultural torment. This approach has profound implications not only for the nature of contemporary religious belief and practice but also for the reconceptualization of the proper relationship between religion and politics. Challenging the modern, liberal, and secular assumption of a neutral public space, Robbins conceives of a postsecular politics for contemporary society that inextricably links religion to the political. While effectively recasting the tradition of radical theology as a political theology, this book also develops a comprehensive critique of the political theology bequeathed by Carl Schmitt. It marks an original and visionary achievement by the scholar the _Journal of the American Academy of Religion_ hailed "one of the best commentators on religion and postmodernism.". (shrink)

Insofar as empirical inquiry involves the coevolution of descriptive language and theoretical commitments, a satisfactory model of empirical knowledge should describe the coordinated evolution of both language and theory. But since we do not know what conceptual resources we might need to express our future theories or to provide our best future faithful descriptions of the world, we do not now know even what the space of future descriptive options might be. One strategy for addressing this shifting-resource problem is (...) to track the predictive and linguistic dispositions of inquirers rather than to track their theories and conceptual resources directly. Sender-predictor games, a variant of Skyrms–Lewis sender-receiver games, provide very simple models for the coordinated coevolution of predictive and linguistic dispositions. Such models explain how it is possible for predictive and descriptive dispositions of inquirers to coevolve, term-wise incommensurable, but nevertheless descriptively faithful languages, to sequentially evolve, and a sort of underdetermination to occur where inquirers might satisfy their descriptive and predictive aims by revising their linguistic dispositions, their theoretical dispositions, or both. Such models also provide an elementary characterization of what it might mean for descriptions of the world to be faithful and hence for empirical inquiry to be successful. In doing so they provide a relatively weak, but perfectly clear, endogenous account of epistemic norms. (shrink)

The purpose of this entry is to provide a systematic introduction to medieval views about the nature and ontological status of relations. Given the current state of our knowledge of medieval philosophy, especially with regard to relations, it is not possible to discuss all the nuances of even the best known medieval philosophers' views. In what follows, therefore, we shall restrict our aim to identifying and describing (a) the main types of position that were developed during the Middle Ages, and (...) (b) the most important considerations that shaped their development. We shall have occasion along the way, however, to examine in detail certain aspects of the views of important representatives of all the main medieval positions, including Peter Abelard (1079 1142), Gilbert of Poitiers (1085 1154), Albert the Great, (1200 1280), Thomas Aquinas (1225 1274), John Duns Scotus (1265 1308), Henry Harclay (1270 1317), Peter Auriol (1280 1322), and William Ockham (1285 1347). (shrink)

This paper argues that the notion of value has been overly simplified and narrowed to focus on economic returns. Stakeholder theory provides an appropriate lens for considering a more complex perspective of the value that stakeholders seek as well as new ways to measure it. We develop a four-factor perspective for defining value that includes, but extends beyond, the economic value stakeholders seek. To highlight its distinctiveness, we compare this perspective to three other popular performance perspectives. Recommendations are made (...) regarding performance measurement for both academic researchers and practitioners. The stakeholder perspective on value offered in this paper draws attention to those factors that are most closely associated with building more value for stakeholders, and in so doing, allows academics to better measure it and enhances managerial ability to create it. (shrink)

Insofar as empirical inquiry involves the coevolution of descriptive language and theoretical commitments, a satisfactory model of empirical knowledge should describe the coordinated evolution of both language and theory. But since we do not know what conceptual resources we might need to express our future theories or to provide our best future faithful descriptions of the world, we do not now know even what the space of future descriptive options might be. One strategy for addressing this shifting-resource problem is (...) to track the predictive and linguistic dispositions of inquirers rather than to track their theories and conceptual resources directly. Sender-predictor games, a variant of Skyrms–Lewis sender-receiver games, provide very simple models for the coordinated coevolution of predictive and linguistic dispositions. Such models explain how it is possible for (1) predictive and descriptive dispositions of inquirers to coevolve, (2) term-wise incommensurable, but nevertheless descriptively faithful languages, to sequentially evolve, and (3) a sort of underdetermination to occur where inquirers might satisfy their descriptive and predictive aims by revising their linguistic dispositions, their theoretical dispositions, or both. Such models also provide an elementary characterization of what it might mean for descriptions of the world to be faithful and hence for empirical inquiry to be successful. In doing so they provide a relatively weak, but perfectly clear, endogenous account of epistemic norms. (shrink)

Semantics is the discipline that studies linguistic meaning generally, and the qualification ‘formal’ indicates something about the sorts of techniques used in investigating linguistic meaning. More specifically, formal semantics is the discipline that employs techniques from symbolic logic, mathematics, and mathematical logic to produce precisely characterized theories of meaning for natural languages or artificial languages. Formal semantics as we know it first arose in the twentieth century. It was made possible by certain developments in logic during that period. This article (...) chronicles those developments and how they led to the development of formal semantics. (shrink)

In the wake of populist challenges throughout the past decade in the U.S. and Europe, liberalism has been described as elitist and out of touch, concerned with protecting and promoting material interests with an orientation that is pragmatic, legalistic, and technocratic. Simultaneously, liberal governments have become increasingly detached from the middle class and its moral needs for purpose and belonging. If liberalism cannot provide spiritual sustenance, individuals will look elsewhere for it, especially in illiberal forms of populism. -/- In Kant, (...) Liberalism, and the Meaning of Life, Jeffrey Church addresses the "meaning deficit" in contemporary liberal societies. Focusing on Immanuel Kant's largely neglected early lectures on anthropology from the 1760s and 1770s, Church argues that Kant's work can serve as a basis for a more meaningful liberalism, one that conceives of freedom and equality for all as a moral vocation of citizens and institutions. Church also asserts that Kant's early view of the meaning of life has important implications for understanding his political theory. Kant saw liberal community as something that helps us realize our destiny on earth as the distinctively free creatures we are. Liberalism, then, is not elitist but a participatory project of all members of society. It is not concerned primarily with material things but with our moral destiny. It is not pragmatic but principled. -/- Church holds that Kant's liberalism rests on a view of the meaning of human existence, and so analyzes Kant's view of the meaning of life and its application to his politics. In particular, Church contends that a fundamental concern included in Kant's liberalism, largely unrecognized by scholars, is to foster the meaning of life for citizens of liberal republican orders. At the same time, Church applies Kant's views of the meaning of life to contemporary problems in liberalism. In particular, he argues that Kant's view of a meaningful liberalism can provide a counterweight to the recent rise of illiberal nationalist or religious forms of community that seem attractive to liberal citizens hungering for meaning in a disenchanted world. Compelling and ambitious, Jeffrey Church provides the first extended treatment of Kant's understanding of the meaning of life and a powerful alternative to procedural liberalism. (shrink)

Social theory between progress and apocalypse -- Autonomy and domination: Weber's cage -- Barbarism and modernity: Eisenstadt's regret -- Integration and justice: Parsons' utopia -- Despising others: Simmel's stranger -- Meaning evil -- De-civilizing the civil sphere -- Psychotherapy as central institution -- The frictions of modernity and their possible repair.

I develop a “two-systems” interpretation of Husserl’s theory of belief. On this interpretation, Husserl accounts for our sense of the world in terms of (1) a system of embodied horizon meanings and passive synthesis, which is involved in any experience of an object, and (2) a system of active synthesis and sedimentation, which comes on line when we attend to an object’s properties. I use this account to defend Husserl against several forms of Heideggerean critique. One line of critique, (...) recently elaborated by Taylor Carman, says that Husserl wrongly loads everyday perception with explicit beliefs about things. A second, earlier line of critique, due to Hubert Dreyfus, charges Husserl with thinking of belief on a problematic Artificial Intelligence (AI) model which involves explicit rules applied to discrete symbol structures. I argue that these criticisms are based on a conflation of Husserl’s two systems of belief. The conception of Husserlian phenomenology which emerges is compatible with Heideggerean phenomenology and associated approaches to cognitive science (in particular, dynamical systems theory). (shrink)

In this paper I describe the history of the surreal trajectories problem and argue that in fact it is not a problem for Bohm's theory. More specifically, I argue that one can take the particle trajectories predicted by Bohm's theory to be the actual trajectories that particles follow and that there is no reason to suppose that good particle detectors are somehow fooled in the context of the surreal trajectories experiments. Rather than showing that Bohm's theory predicts (...) the wrong particle trajectories or that it somehow prevents one from making reliable measurements, such experiments ultimately reveal the special role played by position and the fundamental incompatibility between Bohm's theory and relativity. They also provide a striking example of the theory-ladenness of observation. (shrink)

The reimagined Battlestar Galactica series (2003–2009) and its prequel series Caprica (2009–2010) provoked viewers to consider anew perennial philosophical questions regarding, among others, the nature of personhood and the role of religion in culture and politics. While no single philosophical viewpoint encapsulates the creators’ vision as a whole, the theory of biopolitics, as formulated by Michel Foucault, Giorgio Agamben, and others, is a fruitful lens through which various points of story and character development may be analyzed. Two noteworthy areas (...) of attention are, first, whether a race of intelligent, self-aware beings, who have been artificially created, should be considered “persons” with attendant moral and legal status, and second, whether the purported ontological division between the “biological” and the “artificial” has moral import concerning the degree of control one class of beings may legitimately exercise over another. (shrink)

Everett's relative-state formulation of quantum mechanics is an attempt to solve the measurement problem by dropping the collapse dynamics from the standard von Neumann-Dirac theory of quantum mechanics. The main problem with Everett's theory is that it is not at all clear how it is supposed to work. In particular, while it is clear that he wanted to explain why we get determinate measurement results in the context of his theory, it is unclear how he intended to (...) do this. There have been many attempts to reconstruct Everett's no-collapse theory in order to account for the apparent determinateness of measurement outcomes. These attempts have led to such formulations of quantum mechanics as the many-worlds, many-minds, many-histories, and relative-fact theories. Each of these captures part of what Everett claimed for his theory, but each also encounters problems. (shrink)

We criticize the bare theory of quantum mechanics -- a theory on which the Schrödinger equation is universally valid, and standard way of thinking about superpositions is correct.

A model of the neuropsychology of anxiety is proposed. The model is based in the first instance upon an analysis of the behavioural effects of the antianxiety drugs in animals. From such psychopharmacologi-cal experiments the concept of a “behavioural inhibition system” has been developed. This system responds to novel stimuli or to those associated with punishment or nonreward by inhibiting ongoing behaviour and increasing arousal and attention to the environment. It is activity in the BIS that constitutes anxiety and that (...) is reduced by antianxiety drugs. The effects of the antianxiety drugs in the brain also suggest hypotheses concerning the neural substrate of anxiety. Although the benzodiazepines and barbiturates facilitate the effects of γ-aminobutyrate, this is insufficient to explain their highly specific behavioural effects. Because of similarities between the behavioural effects of certain lesions and those of the antianxiety drugs, it is proposed that these drugs reduce anxiety by impairing the functioning of a widespread neural system including the septo-hippocampal system, the Papez circuit, the prefrontal cortex, and ascending monoaminergic and cholinergic pathways which innervate these forebrain structures. Analysis of the functions of this system suggests that it acts as a comparator: it compares predicted to actual sensory events and activates the outputs of the BIS when there is a mismatch or when the predicted event is aversive. Suggestions are made as to the functions of particular pathways within this overall brain system. The resulting theory is applied to the symptoms and treatment of anxiety in man, its relations to depression, and the personality of individuals who are susceptible to anxiety or depression. (shrink)

Signaling games with reinforcement learning have been used to model the evolution of term languages (Lewis 1969, Convention. Cambridge, MA: Harvard University Press; Skyrms 2006, “Signals” Presidential Address. Philosophy of Science Association for PSA). In this article, syntactic games, extensions of David Lewis’s original sender–receiver game, are used to illustrate how a language that exploits available syntactic structure might evolve to code for states of the world. The evolution of a language occurs in the context of available vocabulary and syntax—the (...) role played by each component is compared in the context of simple reinforcement learning. (shrink)

The Allegiance of Thomas Hobbes offers a new interpretation of Thomas Hobbes's response to the English Revolution. By focusing on his religious thought, it debunks the standard view of him as a royalist, and recovers his sympathies with the religious projects of the 1640s and 1650s. This reinterpretation culminates with an exploration of Hobbes's surprising sympathies with Oliver Cromwell and his supporters. By placing Thomas Hobbes within fresh contexts, Professor Collins offers a new angle of vision on the religious significance (...) of the English Revolution itself. (shrink)

Everett (1957a, b, 1973) relative-state formulation of quantum mechanics has often been taken to involve a metaphysical commitment to the existence of many splitting worlds each containing physical copies of observers and the objects they observe. While there was earlier talk of splitting worlds in connection with Everett, this is largely due to DeWitt’s (Phys Today 23:30–35, 1970) popular presentation of the theory. While the thought of splitting worlds or parallel universes has captured the popular imagination, Everett himself favored (...) the language of elements, branches, or relative states in describing his theory. The result is that there is no mention of splitting worlds or parallel universes in any of Everett’s published work. Everett, however, did write of splitting observers and was willing to adopt the language of many worlds in conversation with people who were themselves using such language. While there is evidence that Everett was not entirely comfortable with talk of many worlds, it does not seem to have mattered much to him what language one used to describe pure wave mechanics. This was in part a result of Everett’s empirical understanding of the cognitive status of his theory. (shrink)

In early writings, stakeholder theorists supported giving all stakeholders formal, binding control over the corporation, in particular, over its board of directors. In recent writings, however, they claim that stakeholder theory does not require changing the current structure of corporate governance and further claim to be “agnostic” about the value of doing so. This article’s purpose is to highlight this shift and to argue that it is a mistake. It argues that, for instrumental reasons, stakeholder theorists should support giving (...) all stakeholders control over the corporation, in the form of control over its board. That is, stakeholder theorists should support stakeholder democracy over the status quo. A larger goal of this article is to steer the conversation about stakeholder theory toward questions of governance and control. Stakeholder theorists tend to sidestep these questions, but it is vital that they be addressed. (shrink)

Seeking a Mnemonic Turn: Interior Reflections in Gadamer's Post-Platonic Thought This paper reflects on trajectories and pathways for philosophical hermeneutics, now, after the death of its founder, Hans-Georg Gadamer in 2002. More specifically, it challenges the notion that Gadamer's thought is simply tied to the linguistic turn of the 20th century. Instead, it considers the possibility that Gadamer's thinking makes for an implicit declaration of its own kind, calling for a mnemonic turn in modern philosophy and present day hermeneutics. Some (...) reference will be made to both rationalist and empiricist models of inquiry insofar as Gadamer attempts to take philosophy beyond, for example, the Ur-grammar of Chomsky's linguistic theories, and into a world of post-Platonic memory. (shrink)

This chapter contains sections titled: The Moral Version of the Labor Theory of Value The Labor Theory of the Difference Principle Finding a Just Distribution Is the Difference Principle Biased? Answering Narveson and Cohen on Incentives.

A resolution of the quantum measurement problem would require one to explain how it is that we end up with determinate records at the end of our measurements. Metaphysical commitments typically do real work in such an explanation. Indeed, one should not be satisfied with one's metaphysical commitments unless one can provide some account of determinate measurement records. I will explain some of the problems in getting determinate records in relativistic quantum field theory and pay particular attention to the (...) relationship between the measurement problem and a generalized version of Malament's theorem. (shrink)

I show how quantum mechanics, like the theory of relativity, can be understood as a 'principle theory' in Einstein's sense, and I use this notion to explore the approach to the problem of interpretation developed in my book Interpreting the Quantum World.