We study a natural subclass of continuous actions of Polish groups on Polish spaces which we call eventually open actions. We prove that this property characterizes the actions endowed with a complete system of hereditarily countable invariant structures introduced by Hjorth as a generalization of Scott sentences.

Generalizing model companions from model theory we define companions of pieces of canonical partitions of Polish G-spaces. This unifies several constructions from logic. The central problem of the paper is the existence of companions which form a G-orbit which is a Gδ-set. We describe companions of some typical G-spaces.

We extend a theorem of Barwise and Nadel describing the relationship between approximations of canonical Scott sentences and admissible sets to the case of orbit equivalence relations induced on an arbitrary Polish space by a Polish group action.

Let G be a closed subgroup of S∞ and X be a Polish G -space. To every x ∈ X we associate an admissible set Ax and show how questions about X which involve Baire category can be formalized in Ax.

We make a more systematic study of the van Douwen diagram for cardinal coefficients related to combinatorial properties of partitions of natural numbers.

Some of the series' finest lectures have been lost for many years, unavailable to the public in any form -- until now.

The sixth decade of this century may be considered a period of dynamic development of the Soviet ethics. In contrast with the post-revolutionary period, the ethics does not limit itself to a normative reflection, but starts also extensive studies in the theory of ethics. According to the authors of the present article, there are all reasons to believe that the marxist ethics will become a scientific discipline in a full sense of the word. The purpose of the article is not (...) to discuss all problems involved in the contemporary Soviet ethics, but above all to outline main problems and trends of its development. The authors distinguish following aspects of the ethical investigations: philosophical, sociological, social-psychological, axiological, pedagogical, historical, gnoseological, logical, and metaethical. Together with a critical evaluation of solutions of certain problems, they criticize some abstractive and ahistorical, in their opinion, approach to ethics which has been manifested above all in works of Y. A. Milner-Irinin and P. M. Egides. (shrink)

The Saṁhitā Upaniṣad [SU] is a little-known Vedic text that presents ‘typical’ Upaniṣadic teachings on the truth of identity alongside seemingly out-of-place descriptions of rites used to protect oneself against enemies and even against death. The difference between these contents is striking, but what it has to tell us about the SU’s main concerns is vulnerable to historical and text critical methods that rely on structure, style, and linguistic archaism to divide texts into discrete strata. What if the modern text (...) critical practice of individually identifying and classifying textual contents obscures the use and meaning of the word saṁhitā in the SU? Is it possible that the SU’s diverse contents are intrinsically related? This article explores these questions through a close examination of a sequence of passages illustrating the contrast that has led previous scholars to see the SU as miscellaneous in character and lacking internal coherence. Through this examination, I identify a wider context for saṁhitā in the specific relationship the SU depicts between the person and speech. I argue that the SU’s treatment of saṁhitā draws upon an understanding of recitation in the perspective of one’s vulnerability and the dynamics involved in developments of personhood. These findings allow the SU to emerge as an intriguing and coherent text that merits closer examination and establishes a promising approach for the study of the R̥gvedic Āraṇyakas. (shrink)

Individual objects have potentials: paper has the potential to burn, an acorn has the potential to turn into a tree, some people have the potential to run a mile in less than four minutes. Barbara Vetter provides a systematic investigation into the metaphysics of such potentials, and an account of metaphysical modality based on them. -/- In contemporary philosophy, potentials have been recognized mostly in the form of so-called dispositions: solubility, fragility, and so on. Vetter takes dispositions as her (...) starting point, but argues for and develops a more comprehensive conception of potentiality. She shows how, with this more comprehensive conception, an account of metaphysical modality can be given that meets three crucial requirements: Extensional correctness: providing the right truth-values for statements of possibility and necessity; formal adequacy: providing the right logic for metaphysical modality; and semantic utility: providing a semantics that links ordinary modal language to the metaphysics of modality. -/- The resulting view of modality is a version of dispositionalism about modality: it takes modality to be a matter of the dispositions of individual objects. This approach has a long philosophical tradition going back to Aristotle, but has been largely neglected in contemporary philosophy. In recent years, it has become a live option again due to the rise of anti-Humean, powers-based metaphysics. The aim of Potentiality is to develop the dispositionalist view in a way that takes account of contemporary developments in metaphysics, logic, and semantics. (shrink)

The age of a structure M is the set of all isomorphism types of finite substructures of M. We study ages of generic expansions of ω-stable ω-categorical structures.

Dispositions are modal properties. The standard conception of dispositions holds that each disposition is individuated by its stimulus condition(s) and its manifestation(s), and that their modality is best captured by some conditional construction that relates stimulus to manifestation as antecedent to consequent. I propose an alternative conception of dispositions: each disposition is individuated by its manifestation alone, and its modality is closest to that of possibility — a fragile vase, for instance, is one that can break easily. The view is (...) expounded in some detail and defended against the major objections. (shrink)

Abilities are in many ways central to what being an agent means, and they are appealed to in philosophical accounts of a great many different phenomena. It is often assumed that abilities are some kind of dispositional property, but it is rarely made explicit exactly which dispositional properties are our abilities. Two recent debates provide two different answers to that question: the new dispositionalism in the debate about free will, and virtue reliabilism in epistemology. This paper argues that both answers (...) fail as general accounts of abilities, and discusses the ramifications of this result. (shrink)

The natural rights with which we have been dealing are, however, inseparably connected, in the very person who is their subject, with just as many respectiveduties; and rights as well as duties find their source, their sustenance and their inviolability in the natural law which grants or enjoins them.Since men are social by nature they are meant to live with others and to work for one another’s welfare. A well-ordered human society requires that men recognize and observe their mutual rights (...) and duties. It also demands that each contribute generously to the establishment of a civic order in which rights and duties are more sincerely and effectively acknowledged and fulfilled. (shrink)

This book presents the most important problems of reference and considers their solution. It presupposes no technical knowledge, presents analyses from first principles, illustrates every stage with examples, and is written with verve and clarity. This is the ideal introduction to reference for students of linguistics and philosophy of language.

It is a familiar point that many ordinary dispositions are multi-track, that is, not fully and adequately characterisable by a single conditional. In this paper, I argue that both the extent and the implications of this point have been severely underestimated. First, I provide new arguments to show that every disposition whose stimulus condition is a determinable quantity must be infinitely multi-track. Secondly, I argue that this result should incline us to move away from the standard assumption that dispositions are (...) in some way importantly linked to conditionals, as presupposed by the debate about various versions of the ‘conditional analysis’ of dispositions. I introduce an alternative conception of dispositionality, which is motivated by linguistic observations about dispositional adjectives and links dispositions to possibility instead of conditionals. I argue that, because of the multi-track nature of dispositions, the possibility-based conception of dispositions is to be preferred. (shrink)

In this paper I develop a framework for environmental philosophy on the ground of what I call a radical relationalism based on Whitehead’s thought. Accordingly, relations are ontologically prior to and constitutive of entities rather than being conceived as external link(ing) between them. On this ground an alternative, relational axiology can be developed that challenges the current environmental ethics debate and its dichotomy between intrinsic and instrumental values. In the last section, I show how such an axiology can become an (...) important ally for global environmental justice struggles and help support what the anthropologist Arturo Escobar calls a “decolonial view of nature.”. (shrink)

Combining knowledge of social policy and practice with insights from poststructural and feminist theory, the text demonstrates how democratic citizens and the political are continually recreated.

Williamsonian modal epistemology is characterized by two commitments: realism about modality, and anti-exceptionalism about our modal knowledge. Williamson’s own counterfactual-based modal epistemology is the best known implementation of WME, but not the only option that is available. I sketch and defend an alternative implementation which takes our knowledge of metaphysical modality to arise, not from knowledge of counterfactuals, but from our knowledge of ordinary possibility statements of the form ‘x can F’. I defend this view against a criticism indicated in (...) Williamson’s own work, and argue that it is better connected to the semantics of modal language. (shrink)

Ulrich Beck's best selling Risk Society established risk on the sociological agenda. It brought together a wide range of issues centering on environmental, health and personal risk, provided a rallying ground for researchers and activists in a variety of social movements and acted as a reference point for state and local policies in risk management. The Risk Society and Beyond charts the progress of Beck's ideas and traces their evolution. It demonstrates why the issues raised by Beck reverberate widely throughout (...) social theory and covers the new risks that Beck did not foresee, associated with the emergence of new technologies, genetic and cybernetic. The book is unique because it offers both an introduction to the main arguments in Risk Society and develops a range of critical discussions of aspects of this and other works of Beck. (shrink)

One main issue within environmental ethics is the so-called Demarcation Problem, i.e. the question of which entities are members of the moral community and hold intrinsic value. I argue that the demarcation problem relies mainly on Kantian moral philosophy. While the Kantian framework offers a strong and immediately deontological argument for moral agents holding inherent moral values, it presents problems when stretched beyond its original scope and lacks an adequate ground for addressing relational complexity and the moral significance of collectives. (...) In this paper I outline an alternative axiological framework ('map of moral significance') that relies on a relational ontology and encompasses intrinsic and relational values as the two equipollent axes of a matrix in which to embed the question posited by the Demarcation Problem. (shrink)

According to essentialism, metaphysical modality is founded in the essences of things, where the essence of a thing is roughly akin to its real definition. According to potentialism (also known as dispositionalism), metaphysical modality is founded in the potentialities of things, where a potentiality is roughly the generalized notion of a disposition. Essentialism and potentialism have much in common, but little has been written about their relation to each other. The aim of this paper is to understand better the relations (...) between essence and potentiality, on the one hand, and between essentialism and potentialism, on the other. It is argued, first, that essence and potentiality are not duals but interestingly linked by a weaker relation dubbed ‘semi-duality’; second, that given this weaker relation, essentialism and potentialism are not natural allies but rather natural competitors; and third, that the semi-duality of essence and potentiality allows the potentialist to respond to an important explanatory challenge by using essentialist resources without thereby committing to essentialism. (shrink)

According to ecological psychology, animals perceive not just the qualities of things in their environment, but their affordances: in James Gibson’s words, ’what things furnish, for good or ill’. I propose a metaphysics for affordances that fits into a contemporary anti-Humean metaphysics of powers or potentialities. The goal is to connect two debates, one in the philosophy of perception and one in metaphysics, that stand to gain much from each other.

Dispositionalists try to provide an account of modality—possibility, necessity, and the counterfactual conditional—in terms of dispositions. But there may be a tension between dispositionalist accounts of possibility on the one hand, and of counterfactuals on the other. Dispositionalists about possibility must hold that there are no impossible dispositions, i.e., dispositions with metaphysically impossible stimulus and/or manifestation conditions; dispositionalist accounts of counterfactuals, if they allow for non-vacuous counterpossibles, require that there are such impossible dispositions. I argue, first, that there are in (...) fact no impossible dispositions; and second, that the dispositionalist can nevertheless acknowledge the non-vacuity of some counterpossibles. The strategy in the second part is one of ‘divide and conquer’ that is not confined to the dispositionalist: it consists in arguing that counterpossibles, when non-vacuous, are read epistemically and are therefore outside the purview of a dispositional account. (shrink)

This paper surveys recent "new actualist" approaches to modality that do without possible worlds and locate modality squarely in the actual world. New actualist theories include essentialism and dispositionalism about modality, each of which can come in different varieties. The commonalities and differences between these views, as well as their shared motivations, are layed out.

The standard Kratzerian analysis of modal auxiliaries, such as ‘may’ and ‘can’, takes them to be univocal and context-sensitive. Our first aim is to argue for an alternative view, on which such expressions are polysemous. Our second aim is to thereby shed light on the distinction between semantic context-sensitivity and polysemy. To achieve these aims, we examine the mechanisms of polysemy and context-sensitivity and provide criteria with which they can be held apart. We apply the criteria to modal auxiliaries and (...) show that the default hypothesis should be that they are polysemous, and not merely context-sensitive. We then respond to arguments against modal ambiguity. Finally, we show why modal polysemy has significant philosophical implications. (shrink)

My aim in this paper is to sketch, with a broad brush and in bare outlines, an approach to modal epistemology that is characterized by three distinctive features. First, the approach is agency-based: it locates the roots of our modal thought and knowledge in our experience of our own agency. Second, the approach is ambitious in that it takes the experience of certain modal properties in agency to be the sole distinctive feature of specifically modal thought and knowledge; everything that (...) we know about modality beyond the experience of agency is a matter of applying standard methods of inquiry such as deduction, induction and abductive methods for choosing between theories. Third, the account holds that modal thought and knowledge is, first and foremost, about modal properties that are sufficiently like those encountered in agency. (shrink)

Modal dispositionalism is the view that possibilities are a matter of the dispositions of individual objects: it is possible that p if and only if something has a disposition for p to be the case. We raise a problem for modal dispositionalism: nothing within the theory rules out that there could be necessary, perfect masks, which make the manifestation of a disposition impossible. Unless such necessary perfect masks are ruled out, modal dispositionalism runs the risk of failing to provide a (...) sufficient condition for possibility, and indeed of engendering contradictions. But to rule them out, modal dispositionalism would have to revise a crucial tenet of the view, its localism. (shrink)

This paper explores the prospects for dispositional accounts of abilities. According to so-called new dispositionalists, an agent has the ability to Φ iff they have a disposition to Φ when trying to Φ. We show that the new dispositionalism is beset by some problems that also beset its predecessor, the conditional analysis of abilities, and bring up some further problems. We then turn to a different approach, which links abilities not to motivational states but to the notion of success, and (...) consider ways of implementing that approach. Our results suggest that there are principled disanalogies between abilities and disposition which prevent any dispositional account of abilities from succeeding. (shrink)

The origins of Vico's social theory : Vichian reflections on the Neapolitan Revolt of 1701 and the politics of the metropolis -- Vico's cosmopolitanism : global citizenship and natural law in Vico's pedagogical thought -- Vico's social theory : the conundrum of the Roman metropolis and the struggle of humanity for natural rights -- From social theory to philosophy : Vico's disillusions with the Neapolitan magistracy and the new frontier of philosophy.