The Study of Time XVI: Time's Urgency celebrates the 50th anniversary of the International Society for the Study of Time. It includes a keynote speech by renowned physicist Julian Barbour, a dialogue between British author David Mitchell, Katie Paterson and ISST's previous president Paul Harris. The volume is divided into dialogues and papers that directly address the issue of urgency and time scales from various disciplines. This book offers a unique perspective on the contemporary status of the interdisciplinary (...) study of time. It will open new paths of inquiry for different approaches to the important issues of narrative structure and urgency. These are themes that are becoming increasingly relevant during our times. (shrink)

Over the years, Katie Cannon's students referred to her work in progress as "Katie's canon." Not only does this book represent the canon of Cannon's best work; the book itself directly addresses the issues of canon formation and canon reformation. Cannon canonizes a literary tradition and directly addresses both oppression and liberation of African American women. Now in an expanded 25th-anniversary edition, Katie's Canon still packs firepower.

The period 1873–1947 was productive in fostering ideas about observing, measuring, and quantifying repetitive human movements, prior to the rise of occupational health and ergonomics within industrial psychology. Starting with physiological experimentation in the lab, instruments of graphic inscription were then applied in the industrial workplace, initially as a benevolent measurement for monitoring worker health, but elsewhere as a more invasive measurement for the surveillance of worker efficiency. Herman Helmholtz’s invention of the myograph, and an adaptation called the ergograph, would (...) help form what Kronecker (1873) and later Mosso (1891) termed the ‘curve of fatigue’, and were used in extensive research on factory workers for Jules Amar’s Le Moteur humain in 1914. Meanwhile, in Britain in 1915 the physiologist Sherrington was observing workers in munitions factories, feeding into the formation of the Industrial Fatigue Research Board in 1919, which produced official reports. In the United States, similar but more high-profile research was conducted by Frederick Winslow Taylor and Lillian and Frank Gilbreth, who studied movement efficiency to maximize industrial productivity by innovating upon photographic and chronophotographic techniques. Further physiological research was taken up in Lawrence J. Henderson’s Harvard Fatigue Laboratory between 1927 and 1947 on subjects situated in environmental extremes. (shrink)

While the fundamental laws of physics are time-reversal invariant, most macroscopic processes are irreversible. Given that the fundamental laws are taken to underpin all other processes, how can the fundamental time-symmetry be reconciled with the asymmetry manifest elsewhere? In statistical mechanics, progress can be made with this question. What I dub the ‘Zwanzig–Zeh–Wallace framework’ can be used to construct the irreversible equations of SM from the underlying microdynamics. Yet this framework uses coarse-graining, a procedure that has faced much criticism. I (...) focus on two objections in the literature: claims that coarse-graining makes time-asymmetry ‘illusory’ and ‘anthropocentric’. I argue that these objections arise from an unsatisfactory justification of coarse-graining prevalent in the literature, rather than from coarse-graining itself. This justification relies on the idea of measurement imprecision. By considering the role that abstraction and autonomy play, I provide an alternative justification and offer replies to the illusory and anthropocentric objections. Finally, I consider the broader consequences of this alternative justification: the connection to debates about inter-theoretic reduction and the implication that the time-asymmetry in SM is weakly emergent. 1Introduction 1.1Prospectus2The Zwanzig–Zeh–Wallace Framework3Why Does This Method Work? 3.1The special conditions account3.2When is a density forwards-compatible?4Anthropocentrism and Illusion: Two Objections 4.1The two objections in more detail4.2Against the justification by measurement imprecision5An Alternative Justification 5.1Abstraction and autonomy5.2An illustration: the Game of Life6Reply to Illusory7Reply to Anthropocentric8The Wider Landscape: Concluding Remarks 8.1Inter-theoretic relations8.2The nature of irreversibility. (shrink)

Although statistically common, and legal since 1973, abortion still bears significant stigma--a proverbial scarlet A. Fear of this stigma leads most of the women and men who are part of the 21% of American pregnancies that end in abortion to remain silent. This book brings the story of ordinary abortion out of the shadows and invites a new conversation about its actual practice, ethics, politics, and law. Katie Watson lends her incisive legal and medical ethics expertise to navigate wisely (...) and respectfully one of the most divisive topics of contemporary life. (shrink)

The majority of U.S. abortion patients are poor women, and Black and Hispanic women. Therefore, this article encourages bioethicists and equity advocates to consider whether the need for abortion c...

ABSTRACT R. P. Wolff has argued that there is an irreconcilable conflict between the distinguishing mark of every state, viz. supreme authority over all its citizens, and the primary obligation of rational beings, viz. to act autonomously by taking moral responsibility for all of their actions. Utilitarian and consent theories which seek to justify the state's claim to possess a monopoly of the rightful use of force are shown to fail and the concept of a ‘legitimate state’to be morally incoherent. (...) However, Wolff's version of individualist anarchism does not follow. Human beings are by no means equally rational or homogeneously autonomous. There are ‘states’which have a contingent and variable right to enforce obedience over an indefinitely large number of their ‘subjects’, although not over those who are autonomous because rational in high degree. (shrink)

Privacy is a critical challenge for corporate social responsibility in the mobile device ecosystem. Mobile application firms can collect granular and largely unregulated data about their consumers, and must make ethical decisions about how and whether to collect, store, and share these data. This paper conducts a discourse analysis of mobile application developer forums to discover when and how privacy conversations, as a representative of larger ethical debates, arise during development. It finds that online forums can be useful spaces for (...) ethical deliberations, as developers use these spaces to define, discuss, and justify their values. It also discovers that ethical discussions in mobile development are prompted by work practices which vary considerably between iOS and Android, today’s two major mobile platforms. For educators, regulators, and managers interested in encouraging more ethical discussion and deliberation in mobile development, these work practices provide a valuable point of entry. But while the triggers for privacy conversations are quite different between platforms, ultimately the justifications for privacy are similar. Developers for both platforms use moral and cautionary tales, moral evaluation, and instrumental and technical rationalization to justify and legitimize privacy as a value in mobile development. Understanding these three forms of justification for privacy is useful to educators, regulators, and managers who wish to promote ethical practices in mobile development. (shrink)

The ecosystem services argument is a highly publicised instrumental argument for protecting biodiversity. I develop a new objection to this argument based on the lack of a causal connection from global species losses to local ecosystem changes. I survey some alternative formulations of services arguments, including ones incorporating option value or a precautionary principle, and show that they do not fare much better than the standard version. I conclude that environmental thinkers should rely less on ecosystem services as a means (...) to defend biodiversity, and that attention should be focused on additional types of value which might be attributed to global biodiversity. (shrink)

A few years ago, it was common for philosophers to begin inquiry into hope by noting that the subject has received little attention in the philosophical literature. But our ability to make this claim is quickly coming to an end; hope has been earning increasing recognition in the discipline, with philosophers exploring important questions related to the nature of hope, what makes hope rational, and how hope is connected to human wellbeing and agency. Despite this recent interest, however, there remains (...) very little discussion of the social and political dimensions of hope. My aim in this paper is to demonstrate the importance of a feminist perspective in bringing these dimensions into fuller view. I argue that feminist insights into the relational nature of the self, which call attention to where selves are socially situated in relation to others, enable a richer understanding of the nature and value of hope. (shrink)

On the 24th June 2015, Feminist Legal Studies and the London School of Economics Law Department hosted an afternoon event with Professor Wendy Brown, Class of 1936 First Professor of Political Science, University of California. Professor Brown kindly agreed to discuss her scholarship on feminist theory, and its relationship to both the law and neoliberalism. The event included an interview by Dr Katie Cruz and a Q&A session, which are presented here in an edited version of the transcript. Sumi (...) Madhock, Professor of Gender Studies, LSE chaired the interview and discussion and introduced Professor Brown’s work. Katie Cruz asked Wendy Brown to reflect upon topics that span her scholarship and activism, including the state of critical, feminist, and Left approaches to rights, neoliberalism, despair and utopianism, and the future of feminist theory and practice in the context of neoliberalism and current debates about intersectionality. Participants in the discussion asked questions on a wide range of issues, including the limits of feminist engagement with law as a tool for social change, the dominance of neoliberalism, imperialist feminism, Islamophobia, secularism, and our attachment to the figure of homo politicus. (shrink)

This article is about the special, subjective concepts we apply to experience, called “phenomenal concepts”. They are of special interest in a number of ways. First, they refer to phenomenal experiences, and the qualitative character of those experiences whose metaphysical status is hotly debated. Conscious experience strike many philosophers as philosophically problematic and difficult to accommodate within a physicalistic metaphysics. Second, PCs are widely thought to be special and unique among concepts. The sense that there is something special about PCs (...) is very closely tied up with features of the epistemic access they afford to qualia. When we deploy phenomenal concepts introspectively to some phenomenally conscious experience as it occurs, we are said to be acquainted with our own conscious experiences. Accounts of PCs either have to explain the acquaintance relation, or acquaintance with our phenomenal experiences has to be denied. PCs have received much attention in recent philosophy of mind mainly because they figure in arguments for dualism and in physicalist responses to these arguments. The main topic of this paper is to explore different accounts of phenomenal concepts and their role in recent debates over the metaphysical status of phenomenal consciousness. (shrink)

The main aim of this book is to introduce the topic of limited awareness, and changes in awareness, to those interested in the philosophy of decision-making and uncertain reasoning.

My aim in this chapter is not to offer yet another theory of hope, but to re-orient the discussion about the nature of hope to focus on hope’s place in our hearts: on how, exactly, hope makes us feel. Although philosophers writing on hope have certainly paid attention to hope’s affective dimensions, when affect is discussed, it is often assumed that hope is positively valenced. I argue that descriptions of the phenomenology of hope as positively valenced paint hope as brighter (...) and cheerier than many hopes tend to be, and that hope is not always pleasant to experience (even in part). In making this argument, I focus specifically on hopes we form in response to non-ideal conditions, hopes that are tainted by the negatively valenced emotion of fear. I then consider the complex relationship between hope, fear, and basal emotions: those emotions which are "experiential backdrops" on which particular emotions arise. I close by reflecting on implications for the relationship between hope and motivation, and raise the question of whether hope itself is an emotion. (shrink)

Renting is a common property relation, and it is becoming more common. In spite of this, there is little treatment of renting in political philosophy. In this paper, I remedy this neglect by offering a defence of renting personal goods such as housing, clothing, and means of transport. I argue that we should want each person to rent a much greater proportion of their personal goods than at present they typically do. I offer two arguments for this claim: “The Community (...) Argument” and “The Mitigation Argument.”. (shrink)

I develop an account of ecological role functions—the functions of species within ecosystems—which is informed by alternative regime phenomena in ecology. My account is a causal-role theory which includes a counterfactual sensitivity condition. The account tracks and explains a distinction ecologists make between functions and various activities which are not functions. My counterfactual sensitivity condition resolves the liberality problem often attributed to causal-role theories of function, while also illuminating the explanatory centrality of role functions within ecology.

In their review, Ruba and Repacholi summarize the methods used to assess preverbal infants’ understanding of emotions, and analyze the existing evidence in light of classical and constructionist ac...

Theories of emotion have often maintained artificial boundaries: for instance, that cognition and emotion are separable, and that an emotion concept is separable from the emotional events that comprise its category (e.g. “fear” is distinct from instances of fear). Over the past several years, research has dissolved these artificial boundaries, suggesting instead that conceptual construction is a domain-general process—a process by which the brain makes meaning of the world. The brain constructs emotion concepts, but also cognitions and perceptions, all in (...) the service of guiding action. In this view, concepts are multimodal constructions, dynamically prepared from a set of highly variable instances. This approach obviates old questions (e.g. how does cognition regulate emotion?) but generates new ones (e.g. how does a brain learn emotion concepts?). In this paper, we review this constructionist, predictive coding account of emotion, considering its implications for health and well-being, culture and development. (shrink)

This book explores the nature, value, and role of hope in human life under conditions of oppression. Oppression is often a threat and damage to hope, yet many members of oppressed groups, including prominent activists pursuing a more just world, find hope valuable and even essential to their personal and political lives. This book offers a unique evaluative framework for hope that captures the intrinsic value of hope for many of us, the rationality and morality of hope, and ultimately how (...) we can hope well in the non-ideal world we share. It develops an account of the relationship between hope and anger about oppression and argues that anger tends to be accompanied by hopes for repair. When people’s hopes for repair are not realized, as is often the case for those who are oppressed, anger can evolve into bitterness: a form of unresolved anger involving a loss of hope that injustice will be sufficiently acknowledged and addressed. But even when all hope might seem lost or out of reach, faith can enable resilience in the face of oppression. Spiritual faith, faith in humanity, and moral faith are part of what motivates people to join in solidarity against injustice, through which hope can be recovered collectively. Joining with others who share one’s experiences or commitments for a better world, and uniting with them in collective action, can restore and strengthen hope for the future when hope might otherwise be lost. (shrink)

The Bayesian maxim for rational learning could be described as conservative change from one probabilistic belief or credence function to another in response to newinformation. Roughly: ‘Hold fixed any credences that are not directly affected by the learning experience.’ This is precisely articulated for the case when we learn that some proposition that we had previously entertained is indeed true (the rule of conditionalisation). But can this conservative-change maxim be extended to revising one’s credences in response to entertaining propositions or (...) concepts of which one was previously unaware? The economists Karni and Vierø (2013, 2015) make a proposal in this spirit. Philosophers have adopted effectively the same rule: revision in response to growing awareness should not affect the relative probabilities of propositions in one’s ‘old’ epistemic state. The rule is compelling, but only under the assumptions that its advocates introduce. It is not a general requirement of rationality, or so we argue. We provide informal counterexamples. And we show that, when awareness grows, the boundary between one’s ‘old’ and ‘new’ epistemic commitments is blurred. Accordingly, there is no general notion of conservative change in this setting. (shrink)

The search for the statistical mechanical underpinning of thermodynamic irreversibility has so far focussed on the spontaneous approach to equilibrium. But this is the search for the underpinning of what Brown and Uffink have dubbed the ‘minus first law’ of thermodynamics. In contrast, the second law tells us that certain interventions on equilibrium states render the initial state ‘irrecoverable’. In this article, I discuss the unusual nature of processes in thermodynamics, and the type of irreversibility that the second law embodies. (...) I then search for the microscopic underpinning or statistical mechanical ‘reductive basis’ of the second law of thermodynamics by taking a functionalist strategy. First, I outline the functional role of the thermodynamic entropy: for a thermally isolated system, the thermodynamic entropy is constant in quasi-static processes, but increasing in non-quasi-static processes. I then search for the statistical mechanical quantity that plays this role—rather than the role of the traditional ‘holy grail’ as described by Callender. I argue that in statistical mechanics, the Gibbs entropy plays this role. (shrink)

In this paper we describe the impact that Walton’s conception of argumentation schemes had on AI and Law research. We will discuss developments in argumentation in AI and Law before Walton’s schemes became known in that community, and the issues that were current in that work. We will then show how Walton’s schemes provided a means of addressing all of those issues, and so supplied a unifying perspective from which to view argumentation in AI and Law.

In this paper we describe an approach to practical reasoning, reasoning about what it is best for a particular agent to do in a given situation, based on presumptive justifications of action through the instantiation of an argument scheme, which is then subject to examination through a series of critical questions. We identify three particular aspects of practical reasoning which distinguish it from theoretical reasoning. We next provide an argument scheme and an associated set of critical questions which is able (...) to capture these features. In order that both the argument scheme and the critical questions can be given precise interpretations we use the semantic structure of an Action-Based Alternating Transition System as the basis for their definition. We then work through a detailed example to show how this approach to practical reasoning can be applied to a problem solving situation, and briefly describe some other previous applications of the general approach. In a second example we relate our account to the social laws paradigm for co-ordinating multi-agent systems. The contribution of the paper is to provide firm foundations for an approach to practical reasoning based on presumptive argument in terms of a well-known model for representing the effects of actions of a group of agents. (shrink)

This study identified and described ethical problems encountered by physiotherapists in their practice and physiotherapists’ moral sensitivity in ethical situations. A questionnaire-based survey was constructed to identify ethical problems, and the Moral Sensitivity Questionnaire Revised version was used to measure moral sensitivity. Physiotherapists (n = 116) working in public health services responded to the questionnaire. Based on the results, most of the physiotherapists encounter ethical problems weekly. They concern mainly financial considerations, equality and justice, professionalism, unethical conduct of physiotherapists or (...) other professions and patients’ self-determination. The dimension of moral strength was emphasised in physiotherapists’ self-evaluations of their moral sensitivity. As a conclusion, ethical problems do occur not only at individual level but also at organisational and society level. Physiotherapists seem to have moral strength for speaking on behalf of the patient. Scarce resources make them feel insufficient but much could still be done to provide quality care in co-operation with other health-care professionals. (shrink)

This paper addresses the stalemate on the question whether biodiversity has intrinsic value. I distinguish between a “weak” conception and two “strong” conceptions of intrinsic value in the environmental ethics literature. The strong conceptions of intrinsic value are connected, respectively, to moral standing and to a strongly objectivist account of value. Neither of these forms of value likely applies to biodiversity. However, the weak conception of intrinsic value is neutral about both moral standing and the nature of value and plausibly (...) applies to biodiversity. In addition, weak intrinsic value avoids common objections to the claim that biodiversity is intrinsically valuable. I develop a cumulative argument showing that environmentalists should presume that biodiversity has intrinsic value in the weak sense. (shrink)

In this paper, we develop a novel response to counterfactual scepticism, the thesis that most ordinary counterfactual claims are false. In the process we aim to shed light on the relationship between debates in the philosophy of science and debates concerning the semantics and pragmatics of counterfactuals. We argue that science is concerned with many domains of inquiry, each with its own characteristic entities and regularities; moreover, statements of scientific law often include an implicit ceteris paribus clause that restricts the (...) scope of the associated regularity to circumstances that are ‘fitting’ to the domain in question. This observation reveals a way of responding to scepticism while, at the same time, doing justice both to the role of counterfactuals in science and to the complexities inherent in ordinary counterfactual discourse and reasoning. (shrink)

Richard Rudner famously argues that the communication of scientific advice to policy makers involves ethical value judgments. His argument has, however, been rightly criticized. This article revives Rudner’s conclusion, by strengthening both his lines of argument: we generalize his initial assumption regarding the form in which scientists must communicate their results and complete his ‘backup’ argument by appealing to the difference between private and public decisions. Our conclusion that science advisors must, for deep-seated pragmatic reasons, make value judgments is further (...) bolstered by reflections on how the scientific contribution to policy is far less straightforward than the Rudner-style model suggests. (shrink)

This article explores the ways in which language users make sense of metaphoricity when manifest in a variety of ways within the language. The research provides an analysis of the lexical characteristics of a single item when used in potentially, but not clearly identified, metaphoric contexts. The analysis focuses on flexible patterns of meaning and the relationship between metaphor and other aspects of figurative language such as polysemy, metonymy, and meronymy. The research stands as a follow up to a larger (...) corpus-driven study that found differences in the lexical behavior of clearly defined metaphoric and nonmetaphoric instances of items, when looking at a large set of collocations, colligations, and semantic, pragmatic and textual associations. These behaviors or patterns are consequently avoided by the non-metaphoric instances of that same item, in order to avoid ambiguity. In the case of more ambiguous or unclear cases of metaphor, this article aims to determine if these patterns are still visible and the extent to which they signal metaphoricity. Evidence of such patterns would imply that lexical, grammatical, textual, and pragmatic manifestations in language play an important role in distinguishing between subtleties in word senses and meanings, even in the case of less obvious metaphoricity. As a consequence, awareness of these behaviors or characteristics should be at the forefront of any lexical metaphor theory. (shrink)

Recent critics (Andrew Light, Bryan Norton, Anthony Weston, and Bruce Morito, among others) have argued that we should give up talk of intrinsic value in general and that of nature in particular. While earlier theorists might have overestimated the importance of intrinsic value, these recent critics underestimate its importance. Claims about a thing’s intrinsic value are claims about the distinctive way in which we have reason to care about that thing. If we understand intrinsic value in this manner, we can (...) capture the core claims that environmentalists want to make about nature while avoiding the worries raised by contemporary critics. Since the distinction between intrinsic and extrinsic value plays a critical role in our understanding of the different ways that we do and should care about things, moral psychology, ethical theory in general, and environmental ethics in particular shouldn’t give up on the concept of intrinsic value. (shrink)

This article examines the use of cinematic microanalysis to capture, decompose, and interpret mother–infant interaction in the decades following the Second World War. Focusing on the films and writings of Margaret Mead, Ray Birdwhistell, René Spitz, and Sylvia Brody, it examines the intellectual culture, and visual methodologies, that transformed ‘pathogenic’ mothering into an observable process. In turn, it argues that the significance assigned to the ‘small behaviours’ of mothers provided an epistemological foundation for the nascent discipline of infant psychiatry. This (...) research draws attention to two new areas of enquiry within the history of emotions and the history of psychiatry in the post-war period: preoccupation with emotional absence and affectlessness, and their personal and cultural meanings; and the empirical search for the origin point, and early chronology, of mental illness. (shrink)

Public relations practitioners are uniquely positioned to promote ethical communication and practice. As Kruckeberg (2000) explained, “public relations practitioners-if they prove worthy of the task—will be called upon to be corporate—that is organizational—interpreters and ethicists and social policy-makers, charged with guiding organizational behavior as well as influencing and reconciling public perceptions within a global context (p. 37).” Public relations practitioners, however, may never take an ethics course as a student, receive on-the-job ethical training, or use the many professional codes of (...) ethics available to them. This lack begs the question: How are they tackling the various ethical decisions they face? This study examines how public relations professionals engage in ethical decision making and make meaning of deontological ethical models. Such inquiry regarding ethical decision making may assist public relations practitioners and scholars to better understand themselves, serve society, and advance the communication profession. (shrink)

There are numerous ‘solutions’ to the problem of evil, from which theists can and do freely take their pick. It is fairly clear that any attempt at a solution must involve a scaling-down of one or more of the assertions out of whose initial conflict the problem arises – either by a downward revision of what we mean by omnipotence, or omniscience, or benevolence, or by minimizing the amount or condensing the varieties of evil actually to be found in the (...) universe. And indeed, in one or more of these different ways, the charge of logical inconsistency can no doubt always be vouchsafed at least a formal answer. Unfortunately, the mere ironing-out of formal inconsistencies does not of itself go very far towards providing a solution to this central problem of theism which will be morally, religiously, and intellectually convincing and acceptable as well as logically impeccable. Everything depends on how the inconsistencies are ironed out. For every attempt at a solution of the problem of evil has to be made at a price, in keeping with the scale and type of conceptual or ethical readjustments which it requires of us. And if the solutions which are generally offered seldom seem to carry much conviction, this is because the price they require us to pay nearly always seems far too high. A ‘solution’ to the problem of evil that is to count as a genuine solution must not require us to make any conceptual or ethical readjustments which it would not on independent grounds be entirely reasonable to make. A ‘solution’ that was finally to count as the solution of the problem of evil would presumably need to be that particular one which required us to make only those conceptual and ethical readjustments which were on independent grounds the ones that it was the most reasonable to make. What follows is offered as a solution, in the above sense, of the problem of evil. However, I shall not here attempt to argue that it is the solution. (shrink)

We argue that concerns about double-counting—using the same evidence both to calibrate or tune climate models and also to confirm or verify that the models are adequate—deserve more careful scrutiny in climate modelling circles. It is widely held that double-counting is bad and that separate data must be used for calibration and confirmation. We show that this is far from obviously true, and that climate scientists may be confusing their targets. Our analysis turns on a Bayesian/relative-likelihood approach to incremental confirmation. (...) According to this approach, double-counting is entirely proper. We go on to discuss plausible difficulties with calibrating climate models, and we distinguish more and less ambitious notions of confirmation. Strong claims of confirmation may not, in many cases, be warranted, but it would be a mistake to regard double-counting as the culprit. 1 Introduction2 Remarks about Models and Adequacy-for-Purpose3 Evidence for Calibration Can Also Yield Comparative Confirmation3.1 Double-counting I3.2 Double-counting II4 Climate Science Examples: Comparative Confirmation in Practice4.1 Confirmation due to better and worse best fits4.2 Confirmation due to more and less plausible forcings values5 Old Evidence6 Doubts about the Relevance of Past Data7 Non-comparative Confirmation and Catch-Alls8 Climate Science Example: Non-comparative Confirmation and Catch-Alls in Practice9 Concluding Remarks. (shrink)

Ecological neutral theory has been controversial as an alternative to niche theory for explaining community structure. Neutral theory, which explains community structure in terms of ecological drift, is frequently charged with being unrealistic, but commentators have usually not provided an account of theory or model realism. In this paper, I propose a framework for comparing the “realism” or accuracy of alternative theories within a domain with respect to the extent to which the theories abstract and idealize. Using this framework I (...) argue, contrary to most previous commentators, that neutral and niche theories are similarly realistic. Realism cannot provide a basis for accepting or rejecting either type of theory; instead, community ecologists should continue working with a plurality of models. While theoretical unification may become possible, we should treat a plurality of complementary, partial models as the expected situation within community ecology. (shrink)

Medical professionals regularly joke about their patients' problems. Some of these jokes are clearly wrong, but are all jokes wrong?

In this paper we consider persuasion in the context of practical reasoning, and discuss the problems associated with construing reasoning about actions in a manner similar to reasoning about beliefs. We propose a perspective on practical reasoning as presumptive justification of a course of action, along with critical questions of this justification, building on the account of Walton. From this perspective, we articulate an interaction protocol, which we call PARMA, for dialogues over proposed actions based on this theory. We outline (...) an axiomatic semantics for the PARMA Protocol, and discuss two implementations which use this protocol to mediate a discussion between humans. We then show how our proposal can be made computational within the framework of agents based on the Belief-Desire-Intention model, and illustrate this proposal with an example debate within a multi agent system. (shrink)

There are at least two plausible generalisations of subjective expected utility (SEU) theory: cumulative prospect theory (which relaxes the independence axiom) and Levi’s decision theory (which relaxes at least ordering). These theories call for a re-assessment of the minimal requirements of rational choice. Here, I consider how an analysis of sequential decision making contributes to this assessment. I criticise Hammond’s (Economica 44(176):337–350, 1977; Econ Philos 4:292–297, 1988a; Risk, decision and rationality, 1988b; Theory Decis 25:25–78, 1988c) ‘consequentialist’ argument for the SEU (...) preference axioms, but go on to formulate a related diachronic-Dutch-book-style’ argument that better achieves Hammond’s aims. Some deny the importance of Dutch-book sure losses, however, in which case, Seidenfeld’s (Econ Philos 4:267–290, 1988a) argument that distinguishes between theories that relax independence and those that relax ordering is relevant. I unravel Seidenfeld’s argument in light of the various criticisms of it and show that the crux of the argument is somewhat different and much more persuasive than what others have taken it to be; the critical issue is the modelling of future choices between ‘indifferent’ decision-tree branches in the sequential setting. Finally, I consider how Seidenfeld’s conclusions might nonetheless be resisted. (shrink)

When once-successful physical theories are abandoned, common wisdom has it that their characteristic theoretical entities are abandoned with them: examples include phlogiston, light rays, Newtonian forces, Euclidean space. But sometimes a theory sees ongoing use, despite being superseded. What should scientific realists say about the characteristic entities of the theories in such cases? The standard answer is that these ‘theoretical relicts’ are merely useful fictions. In this paper we offer a different answer. We start by distinguishing horizontal reduction (in which (...) a superseded theory approximates the successor theory) from vertical reduction (in which a higher-level theory abstracts away from the lower-level theory, but nonetheless can be constructed from it); these are usually regarded as having different ontological consequences. We describe a ‘verticalization’ procedure which transforms horizontal reductions into vertical reductions. The resulting verticalized theories are abstractions rather than approximations, with restricted domains. We identify a sense in which the higher-level theory describes distinct subject matters from the lower-level theory, enabling in certain cases the higher-level theory to retain distinctive explanatory power even in the presence of reduction. We suggest that theoretical entities from superseded theories should be retained in a scientific realist worldview just when, reinterpreted as higher-level abstractions, those theories and their characteristic entities continue to perform distinctive explanatory work in providing the best explanation for less-fundamental phenomena of interest. In slogan form: a good relict is an emergent relict. (shrink)