Families of Borel equivalence relations and quasiorders that are cofinal with respect to the Borel reducibility ordering, ≤B, are constructed. There is an analytic ideal on ω generating a complete analytic equivalence relation and any Borel equivalence relation reduces to one generated by a Borel ideal. Several Borel equivalence relations, among them Lipschitz isomorphism of compact metric spaces, are shown to be Kσ complete.

We survey various aspects of the problem of automatic continuity of homomorphisms between Polish groups.

We introduce and study the framework of compact metric structures and their associated notions of isomorphisms such as homeomorphic and bi-Lipschitz isomorphism. This is subsequently applied to model various classification problems in analysis such as isomorphism ofC*-algebras and affine homeomorphism of Choquet simplices, where among other things we provide a simple proof of the completeness of the isomorphism relation of separable, simple, nuclearC*-algebras recently established by M. Sabok.

We investigate extensions of S. Solecki's theorem on closing off finite partial isometries of metric spaces [11] and obtain the following exact equivalence: any action of a discrete group Γ by isometries of a metric space is finitely approximable if and only if any product of finitely generated subgroups of Γ is closed in the profinite topology on Γ.

Given a finitely generated group Γ, we study the space Isom(Γ, ℚ������) of all actions of Γ by isometries of the rational Urysohn metric space ℚ������, where Isom(Γ, ℚ������) is equipped with the topology it inherits seen as a closed subset of Isom(ℚ������) Γ . When Γ is the free group ������ n on n generators this space is just Isom(ℚ������) n , but is in general significantly more complicated. We prove that when Γ is finitely generated Abelian there is (...) a generic point in Isom(Γ, ℚ������), i.e., there is a comeagre set of mutually conjugate isometric actions of Γ on ℚ������. (shrink)

We consider actions of completely metrisable groups on simplicial trees in the context of the Bass—Serre theory. Our main result characterises continuity of the amplitude function corresponding to a given action. Under fairly mild conditions on a completely metrisable group G, namely, that the set of elements generating a non-discrete or finite subgroup is somewhere dense, we show that in any decomposition as a free product with amalgamation, G = A * C B, the amalgamated groups A, B and C (...) are open in G. (shrink)

It is proved that any countable index, universally measurable subgroup of a Polish group is open. By consequence, any universally measurable homomorphism from a Polish group into the infinite symmetric group S ∞ is continuous. It is also shown that a universally measurable homomorphism from a Polish group into a second countable, locally compact group is necessarily continuous.

We show that the quasi-order of continuous embeddability between finitely branching dendrites (a natural class of fairly simple compacta) is $\Sigma_1^1$ -complete. We also show that embeddability between countable linear orders with infinitely many colors is $\Sigma_1^1$ -complete.

This book first reviews Miller's theory of Mixed Traits, as developed in his 2013 book Moral Character: An Empirical Theory. It then engages extensively with situations, the CAPS model in social psychology, and the Big Five Model in personality psychology. It ends by taking up implications for his view in meta-ethics (a modified error theory) and normative ethics (a challenge for virtue ethics).

Is it merely a matter of taste or convention to consider something right or wrong? Or can we find good reasons for our values and judgements that are independent of culture and tradition? The problem is as old as philosophy itself; and after more than two millennia of scholarly debate, there seems no end to the controversy. But Christian Illies suggests that powerful new forms of transcendental argument (a philosophical tool known since antiquity) may offer a long-sought cornerstone for (...) morality. (shrink)

Earth’s life-support system is facing megaproblems of sustainability. One important way of how these problems can be addressed is through innovation. This paper argues that responsible innovation that contributes to sustainable development consists of three dimensions: innovations avoid harming people and the planet, innovations ‘do good’ by offering new products, services, or technologies that foster SD, and global governance schemes are in place that facilitate innovations that avoid harm and ‘do good.’ The paper discusses global governance schemes based on deliberation (...) as a means to foster such responsible innovation. These schemes can provide voluntary soft-law regulations that complement and extend national and international hard-law regulations and facilitate collective innovation that contributes to SD goals. The article addresses the facilitative role of governments and international organizations in overcoming problems of deliberation and offers illustrative examples of such governance schemes. (shrink)

Christian Pfeiffer explores an important, but neglected topic in Aristotle's theoretical philosophy: the theory of bodies. A body is a three-dimensionally extended and continuous magnitude bounded by surfaces. This notion is distinct from the notion of a perceptible or physical substance. Substances have bodies, that is to say, they are extended, their parts are continuous with each other and they have boundaries, which demarcate them from their surroundings. Pfeiffer argues that body, thus understood, has a pivotal role in Aristotle's (...) natural philosophy. A theory of body is a presupposed in, e.g., Aristotle's account of the infinite, place, or action and passion, because their being bodies explains why things have a location or how they can act upon each other. The notion of body can be ranked among the central concepts for natural science which are discussed in Physics III-IV. (shrink)

The Humean theory of motivation remains the default position in much of the contemporary literature in meta-ethics, moral psychology, and action theory. Yet despite its widespread support, the theory is implausible as a view about what motivates agents to act. More specifically, my reasons for dissatisfaction with the Humean theory stem from its incompatibility with what I take to be a compelling model of the role of motivating reasons in first-person practical deliberation and third-person action explanations. So after first introducing (...) some assumptions about the nature of agency in section one, I will turn to articulating and defending this account of motivating reasons in sections two through four of the paper. Section five then provides some background on the Humean theory before I argue directly against it in section six and critically examine the leading arguments for the view in section seven. Given limitations of space, however, I save the task of developing a positive anti-Humean view for another occasion. (shrink)

This paper provides an introductory review of the theory of judgment aggregation. It introduces the paradoxes of majority voting that originally motivated the field, explains several key results on the impossibility of propositionwise judgment aggregation, presents a pedagogical proof of one of those results, discusses escape routes from the impossibility and relates judgment aggregation to some other salient aggregation problems, such as preference aggregation, abstract aggregation and probability aggregation. The present illustrative rather than exhaustive review is intended to give readers (...) new to the field of judgment aggregation a sense of this rapidly growing research area. (shrink)

This paper provides an introductory review of the theory of judgment aggregation. It introduces the paradoxes of majority voting that originally motivated the field, explains several key results on the impossibility of propositionwise judgment aggregation, presents a pedagogical proof of one of those results, discusses escape routes from the impossibility and relates judgment aggregation to some other salient aggregation problems, such as preference aggregation, abstract aggregation and probability aggregation. The present illustrative rather than exhaustive review is intended to give readers (...) new to the field of judgment aggregation a sense of this rapidly growing research area. (shrink)

The most prominent argument for the incompatibility of free will and determinism is Peter van Inwagen’s consequence argument. I offer a new diagnosis of what is wrong with this argument. Proponents and critics typically accept the way the argument is framed, and only disagree on whether the premisses and rules of inference are true. I suggest that the argument involves a category mistake: it conflates two different levels of description, namely, the physical level at which we describe the world from (...) the perspective of fundamental physics and the agential level at which we describe agents and their actions. My diagnosis is based on an account of free will as a higher-level phenomenon. I call this account ‘compatibilist libertarianism’, for reasons that will become clear. Although the paper addresses a primarily metaphysical question, it uses tools similar to those employed in philosophy-of-science work on determinism and indeterminism, higher-level phenomena, and dynamical systems. (shrink)

The central virtue at issue in recent philosophical discussions of the empirical adequacy of virtue ethics has been the virtue of compassion. Opponents of virtue ethics such as Gilbert Harman and John Doris argue that experimental results from social psychology concerning helping behavior are best explained not by appealing to so-called ‘global’ character traits like compassion, but rather by appealing to external situational forces or, at best, to highly individualized ‘local’ character traits. In response, a number of philosophers have argued (...) that virtue ethics can accommodate the empirical results in question. My own view is that neither side of this debate is looking in the right direction. For there is an impressive array of evidence from the social psychology literature which suggests that many people do possess one or more robust global character traits pertaining to helping others in need. But at the same time, such traits are noticeably different from a traditional virtue like compassion. (shrink)

What kind of animals are human beings? And how do our visions of the human shape our theories of social action and institutions? In Moral, Believing Animals>, Christian Smith advances a creative theory of human persons and culture that offers innovative, challenging answers to these and other fundamental questions in sociological, cultural, and religious theory. Smith suggests that human beings have a peculiar set of capacities and proclivities that distinguishes them significantly from other animals on this planet. Despite the (...) vast differences in humanity between cultures and across history, no matter how differently people narrate their lives and histories, there remains an underlying structure of human personhood that helps to order human culture, history, and narration. Drawing on important recent insights in moral philosophy, epistemology, and narrative studies, Smith argues that humans are animals who have an inescapable moral and spiritual dimension. They cannot avoid a fundamental moral orientation in life and this, says Smith, has profound consequences for how sociology must study human beings. (shrink)

The exclusion argument is widely thought to put considerable pressure on dualism, if not to refute it outright. We argue to the contrary that, whether or not their position is ultimately true, dualists have a plausible response. The response focuses on the notion of ‘distinctness’ that is employed to distinguish between mental and physical properties: if ‘distinctness’ is understood in one way, the exclusion principle on which the argument rests can be denied by the dualist; if it is understood in (...) another way, the argument is not persuasive. (shrink)

This article examines the methodology of a core branch of contemporary political theory or philosophy: “analytic” political theory. After distinguishing political theory from related fields, such as political science, moral philosophy, and legal theory, the article discusses the analysis of political concepts. It then turns to the notions of principles and theories, as distinct from concepts, and reviews the methods of assessing such principles and theories, for the purpose of justifying or criticizing them. Finally, it looks at a recent debate (...) on how abstract and idealized political theory should be, and assesses the significance of disagreement in political theory. The discussion is carried out from an angle inspired by the philosophy of science. (shrink)

Political debate is a distinctive domain in argumentation, characterized by these features: it is about proposals for action, not about propositions that may have a truth value; there may be good arguments on both sides; neither the proposal nor its rejection follows by necessity or inference; the pros and the cons generally cannot, being multidimensional and hence incommen- surable, be aggregated in an objective way; each audience member must subjectively compare and balance arguments on the two sides; eventual consensus between (...) the debaters is not a reasonable requirement. From all this follows a view of the rhetor’s special obligation in democratic, deliberative rhetoric on which it becomes crucial, in the interest of the audience, that political debaters acknowledge good arguments on the opposite side and explain why, on balance, they deem the arguments favoring their own side to be stronger. (shrink)

Doping in sport counts as a typical example of unfair behaviour and a good illustration of ethical problems produced by enhancement activities. However, there are some authors who argue that enhancement in sport is not intrinsically problematic but only so in those circumstances that make it dangerous for athletes or unfair to competitors, or which give rise to suspicion in the viewing public. In contrast to this, the author of the present article shows that enhancement activities are contradictory to basic (...) requirements and preconditions of sports competitions. These preconditions are, firstly, a basic equality of opportunities for all competitors and, secondly, a clear causal connection between a specific performance and an individual athlete, in the sense of authorship of that performance. It cannot be excluded that there could exist future sports competitions without these qualities, but this would clearly be a fundamentally different kind of sport from nowadays. Therefore, the normative background of the current concept of sports competitions, as such, limits the use of enhancement practices to a rather low level. (shrink)

In this paper, I hope to provide an account of the conditions of moral realism whereby there are still significant metaphysical commitments made by the realist which set the view apart as a distinct position in the contemporary meta-ethical landscape. In order to do so, I will be appealing to a general account of what it is for realism to be true in any domain of experience, whether it be realism about universals, realism about unobservable scientific entities, realism about artifacts, (...) and so forth. (shrink)

Nanomedicine plays a prominent role among emerging technologies. The spectrum of potential applications is as broad as it is promising. It includes the use of nanoparticles and nanodevices for diagnostics, targeted drug delivery in the human body, the production of new therapeutic materials as well as nanorobots or nanoprotheses. Funding agencies are investing large sums in the development of this area, among them the European Commission, which has launched a large network for life-sciences related nanotechnology. At the same time government (...) agencies as well as the private sector are putting forward reports of working groups that have looked into the promises and risks of these developments. This paper will begin with an introduction to the central ethical themes as identified by selected reports from Europe and beyond. In a next step, it will analyse the most frequently invoked ethical concerns–risk assessment and management, the issues of human identity and enhancement, possible implications for civil liberties (e.g. nanodevices that might be used for covert surveillance), and concerns about equity and fair access. Although it seems that the main ethical issues are not unique to nanotechnologies, the conclusion will argue against shrugging them off as non-specific items that have been considered before in the context of other biomedical technologies, such as gene therapy or xenotransplantation. Rather, the paper will call on ethicists to help foster a rational, fair and participatory discourse on the different potential applications of nanotechnologies in medicine, which can form the basis for informed and responsible societal and political decisions. (shrink)

This paper provides an introductory review of the theory of judgment aggregation. It introduces the paradoxes of majority voting that originally motivated the field, explains several key results on the impossibility of propositionwise judgment aggregation, presents a pedagogical proof of one of those results, discusses escape routes from the impossibility and relates judgment aggregation to some other salient aggregation problems, such as preference aggregation, abstract aggregation and probability aggregation. The present illustrative rather than exhaustive review is intended to give readers (...) new to the field of judgment aggregation a sense of this rapidly growing research area. (shrink)

Douglas Walton has done extensive and valuable work on the concepts of presumption and practical reasoning. However, Walton’s attempt to model practical reasoning as presumptive is misguided. The notions of “inference” and of the burden of proof shifting back and forth between proponent and respondent are misleading and lead to counterintuitive consequences. Because the issue in practical reasoning is a proposal, not a proposition, there are, in the standard case, several perfectly good reasons on both sides simultaneously, which implies that (...) argument appraisal necessarily contains a subjective element—a fact argumentation theory needs to conceptualize. (shrink)

The most prominent argument for the incompatibility of free will and determinism is Peter van Inwagen’s consequence argument. I offer a new diagnosis of what is wrong with this argument. Proponents and critics typically accept the way the argument is framed, and only disagree on whether the premisses and rules of inference are true. I suggest that the argument involves a category mistake: it conflates two different levels of description, namely, the physical level at which we describe the world from (...) the perspective of fundamental physics and the agential level at which we describe agents and their actions. My diagnosis is based on an account of free will as a higher-level phenomenon. I call this account ‘compatibilist libertarianism’, for reasons that will become clear. Although the paper addresses a primarily metaphysical question, it uses tools similar to those employed in philosophy-of-science work on determinism and indeterminism, higher-level phenomena, and dynamical systems. (shrink)

I first summarize the main line of argument used by Harman and Doris against Aristotelian virtue ethics in particular. In section two I present what seems to me to be the most promising response to their argument. Finally in section three I briefly review and assess the other leading responses in the now sizable literature that has developed in this area.

The human body and its parts are widely perceived as matters beyond commercial usage. This belief is codified in several national and European documents. This so-called ‘no-property rule’ is held to be the default position across the countries of the European Union. However, a closer look at the most pertinent national and European documents, and also current practices in the field, reveals a gradual model of commercialisation of human tissue. In particular, we will argue that the ban on commercialisation of (...) body material is not as strict as it may appear at first sight, leaving room for the commercial practice of tissue procurement and transfer. We argue for more transparent information for patients and tissue donors, an intensified ethical debate on commercialisation practices, and a critical review of current normative principles. (shrink)

One of the hallmark themes of Karl Popper’s approach to the social sciences was the insistence that when social scientists are members of the society they study, then they are liable to affect that society. In particular, they are liable to affect it in such a way that the claims they make lose their validity. “The interaction between the scientist’s pronouncements and social life almost invariably creates situations in which we have not only to consider the truth of such pronouncements, (...) but also their actual influence on future developments. The social scientist may be striving to find the truth; but, at the same time, he must always be exerting a definite influence upon society. The very fact that his pronouncements do exert an influence destroys their objectivity.” (Popper 1963. (shrink)

This paper provides an introductory review of the theory of judgment aggregation. It introduces the paradoxes of majority voting that originally motivated the field, explains several key results on the impossibility of propositionwise judgment aggregation, presents a pedagogical proof of one of those results, discusses escape routes from the impossibility and relates judgment aggregation to some other salient aggregation problems, such as preference aggregation, abstract aggregation and probability aggregation. The present illustrative rather than exhaustive review is intended to give readers (...) new to the field of judgment aggregation a sense of this rapidly growing research area. (shrink)

A number of philosophers have become convinced that the best way of trying to understand human agency is by arriving at an account of identification. My goal here is not to criticize particular views about identification, but rather to examine several assumptions which have been widely held in the literature and yet which, in my view, render implausible any account of identification that takes them on board. In particular, I argue that typically identification does not involve either reflective consideration of (...) our mental states or endorsement of those states. If it did, we would rarely be agents. (shrink)

This introduction summarizes the main contributions of this special issue titled “Quiet Politics and the Power of Business: New Perspectives in an Era of Noisy Politics.” The four articles in the issue use and extend Culpepper’s influential concept of “quiet politics” according to which business is able to shape policies and regulations when issues are of low salience to the public and politicians. The issue takes Culpepper’s analysis further in ways that respond to the rise of noisy politics over the (...) last few years, often associated with new strident forms of left- and right-wing populism. Three contributions are made. First, the articles show that salience is not an inherent property of a policy area but is socially constructed. Second, a variety of strategies are described that business uses when trying to keep politics quiet. Third, strategies are affected by the structure of business, which varies across types of capitalism. Future research can use these insights to extend our understanding of the limits, strategies, and dynamics of quiet politics across political economies. (shrink)

If there is a specifically rhetorical approach to argumentation, I believe it is one that studies argumentation that is specifically rhetorical. So if we want to ask, “What is the rhetorical approach to argumentation?” we should first ask, “What is rhetorical argumentation?” It is worthwhile focusing on this question because various misleading definitions of rhetorical argumentation have been in circulation for almost as long as rhetoric has existed. Some misleading definitions see the defining property of rhetorical argumentation in the arguer’s (...) aim. And that aim, which is often assumed to override all the arguer’s other considerations, is strategic: to persuade his hearer(s) by any available means and .. (shrink)

This article develops theory on responsible leadership based on a model involving three leadership roles: an expert who displays organizational expertise, a facilitator who cares for and motivates employees and a citizen who considers the consequences of her or his decisions for society. It draws on previous responsible leadership research, stakeholder theory and theories of behavioral complexity to conceptualize the roles model of responsible leadership. Responsible leadership is positioned as a concept that requires leaders to show behavioral complexity in addressing (...) all three roles. In three studies, we provide a first empirical test of antecedents and outcomes of the roles model of responsible leadership. The results of the studies indicate that responsible leadership is positively related to the leader’s perceived effectiveness, favorable stakeholder evaluations and employee engagement with the organization and society. Responsible leadership behavior, in turn, seems to be facilitated by leader empathy, positive affect and universal value orientation. (shrink)

Let be the set of nonnegative integers. We show the two following facts about Presburger's arithmetic:1. 1. Let . If L is not definable in , + then there is an definable in , such that there is no bound on the distance between two consecutive elements of L′. and2. 2. is definable in , + if and only if every subset of which is definable in is definable in , +. These two Theorems are of independent interest but we (...) will get from them new proofs of Cobham's and Semenov's Theorems ; Semenov's Theorem is:Let k and l be multiplicatively independent . If is definable in and in then L is recognizable . Here Vm is the function which sends a nonzero natural number to the greatest power of m dividing it. (shrink)

This article discusses the dual interpretation of the Jeffreys-Lindley paradox associated with Bayesian posterior probabilities and Bayes factors, both as a differentiation between frequentist and Bayesian statistics and as a pointer to the difficulty of using improper priors while testing. I stress the considerable impact of this paradox on the foundations of both classical and Bayesian statistics. While assessing existing resolutions of the paradox, I focus on a critical viewpoint of the paradox discussed by Spanos in Philosophy of Science.

Reinforcement learning approaches to cognitive modeling represent task acquisition as learning to choose the sequence of steps that accomplishes the task while maximizing a reward. However, an apparently unrecognized problem for modelers is choosing when, what, and how much to reward; that is, when (the moment: end of trial, subtask, or some other interval of task performance), what (the objective function: e.g., performance time or performance accuracy), and how much (the magnitude: with binary, categorical, or continuous values). In this article, (...) we explore the problem space of these three parameters in the context of a task whose completion entails some combination of 36 state–action pairs, where all intermediate states (i.e., after the initial state and prior to the end state) represent progressive but partial completion of the task. Different choices produce profoundly different learning paths and outcomes, with the strongest effect for moment. Unfortunately, there is little discussion in the literature of the effect of such choices. This absence is disappointing, as the choice of when, what, and how much needs to be made by a modeler for every learning model. (shrink)

Philosophers have inherited a familiar taxonomy of character types from Aristotle. We are all acquainted with the labels of the virtuous, vicious, continent, and incontinent person. The goal of this paper is to argue that we should jettison this framework. The main reason is that psychological research in the past fifty years has suggested a much more complex picture of moral character than what can be usefully captured by these four categories. In its place, I will suggest a better taxonomy (...) that makes use of the idea of what I call mixed character. (shrink)

The turn of the century saw a significant increase in the amount of attention being paid by philosophers to empirical issues about moral character. Dating back at least to Plato and Aristotle in the West, and Confucius in the East, philosophers have traditionally drawn on empirical data to some extent in their theorizing about character. One of the main differences in recent years has been the source of this empirical data, namely the work of social and personality psychologists on morally (...) relevant thought and action. -/- This entry briefly examines four recent empirical approaches to moral character. It will draw on the psychology literature where appropriate, but the main focus will be on the significance of that work for philosophers interested in better understanding moral character. The four areas are situationism, the CAPS model, the Big Five model, and the VIA. The remainder of this entry devotes a section to each of them. (shrink)