Lists of species underpin many fields of human endeavour, but there are currently no universally accepted principles for deciding which biological species should be accepted when there are alternative taxonomic treatments (and, by extension, which scientific names should be applied to those species). As improvements in information technology make it easier to communicate, access, and aggregate biodiversity information, there is a need for a framework that helps taxonomists and the users of taxonomy decide which taxa and names should be used (...) by society whilst continuing to encourage taxonomic research that leads to new species discoveries, new knowledge of species relationships, and the refinement of existing species concepts. Here, we present 10 principles that can underpin such a governance framework, namely (i) the species list must be based on science and free from nontaxonomic considerations and interference, (ii) governance of the species list must aim for community support and use, (iii) all decisions about list composition must be transparent, (iv) the governance of validated lists of species is separate from the governance of the names of taxa, (v) governance of lists of accepted species must not constrain academic freedom, (vi) the set of criteria considered sufficient to recognise species boundaries may appropriately vary between different taxonomic groups but should be consistent when possible, (vii) a global list must balance conflicting needs for currency and stability by having archived versions, (viii) contributors need appropriate recognition, (ix) list content should be traceable, and (x) a global listing process needs both to encompass global diversity and to accommodate local knowledge of that diversity. We conclude by outlining issues that must be resolved if such a system of taxonomic list governance and a unified list of accepted scientific names generated are to be universally adopted. (shrink)

Why do people seemingly want to be scared by movies and feel pity for fictional characters when they avoid situations in real life that arouse these same negative emotions? Although the domain of relevant artworks encompasses far more than just tragedy, the general problem is typically called the paradox of tragedy. The paradox boils down to a simple question: If people avoid pain then why do people want to experience art that is painful? I discuss six popular solutions to the (...) paradox: conversion, control, compensatory, meta-response, catharsis, and rich experience theories. (shrink)

The thesis that aesthetic testimony cannot provide aesthetic justification or knowledge is widely accepted--even by realists about aesthetic properties and values. This Kantian position is mistaken. Some testimony about beauty and artistic value can provide a degree of aesthetic justification and, perhaps, even knowledge. That is, there are cases in which one can be justified in making an aesthetic judgment purely on the basis of someone else's testimony. But widespread aesthetic unreliability creates a problem for much aesthetic testimony. Hence, most (...) testimony about art does not have much epistemic value. The situation is somewhat different with respect to aesthetic testimony about nature, proofs, and theories. (shrink)

Neo-Cartesian approaches to belief place greater evidential weight on a subject's introspective judgments than do neo-behaviorist accounts. As a result, the two views differ on whether our absent-minded and weak-willed actions are guided by belief. I argue that simulationist accounts of the concept of belief are committed to neo-Cartesianism, and, though the conceptual and empirical issues that arise are inextricably intertwined, I discuss experimental results that should point theory-theorists in that direction as well. Belief is even less closely connected to (...) behaviour than most contemporary functionalists allow. (shrink)

Emotions involve complex processes produced by interactions between motives, beliefs, percepts, etc. E.g. real or imagined fulfilment or violation of a motive, or triggering of a 'motive-generator', can disturb processes produced by other motives. To understand emotions, therefore, we need to understand motives and the types of processes they can produce. This leads to a study of the global architecture of a mind. Some constraints on the evolution of minds are disussed. Types of motives and the processes they generate are (...) sketched. (shrink)

Recent theorists suggest that our capacity to respond affectively to fictions depends on our ability to engage in simulation: either simulating a character in the fiction, or simulating someone reading or watching the fiction as though it were fact. We argue that such accounts are quite successful at accounting for many of the basic explananda of our affective engagements in fiction. Nonetheless, we argue further that simulationist accounts ultimately fail, for simulation involves an ineliminably ego-centred element that is atypical of (...) our experience of fiction. We then draw on recent work in philosophical psychology to articulate a more psychologically plausible account of our emotional engagement with fiction. (shrink)

Photographs furnish evidence. This is true in both formal and informal contexts. The use of photographs as legal evidence goes back to the very earliest days of photography, and they have been used in American trials since around the time of the Civil War. Photographs may also serve as historical evidence (for example, about the Civil War). And they serve in informal contexts as evidence about all sorts of things, such as what we and our loved ones looked like in (...) the past. (shrink)

The work of Hussefl and Freud had common sources in the philosophy, psychology and physiology of the nineteenth century. Herbart, Brentano, Helmholtz, Fechner, Wundt and Mach were among the towering figures in their common background who had influence on their respective work. 1 Although contemporaries who had little concern for the other's professional interest, Husserl and Freud nevertheless struggled with some common problems. One of these is the relationship of sensation to memory and to the experience of time. The concepts (...) of sensation, memory and time were, in fact, artifacts which the empirical methods of nerve-physiology, the psychophysical testing of sensory thresholds, as well as the metaphysics and positivism of the late nineteenth century had left them. (shrink)

There are passages in Nietzsche that can be read as contributions to the free will/determinism debate. When read in that way, they reveal a fairly amateurish metaphysician with little of real substance or novelty to contribute; and if these readings were apt or perspicuous, it seems to me, they would show that Nietzsche's thoughts about freedom were barely worth pausing over. They would simply confirm the impression—amply bolstered from other quarters—that Nietzsche was not at his best when addressing the staple (...) questions of philosophy. But these readings sell Nietzsche short. He had next to no systematic interest in metaphysics, and his concern with the question of freedom was not motivated by metaphysical considerations. Rather—and as with all of Nietzsche's concerns—his motivations were ethical. He was interested, not in the relation of the human will to the causal order of nature, but in the relation between freedom and the good life, between the will and exemplary human living. Read from this perspective, Nietzsche's remarks about freedom actually add up to something. And what they add up to is one aspect of his attempt to understand life after the model of art. Beauty, for Kant, was an image of the moral.1 For Nietzsche, by contrast—and the contrast can be hard to spell out—art was an image of the ethical.2 My hope here is to begin to explain why Nietzsche might have thought that the issue of freedom was relevant to that. In sections 1–3, I attempt to show why Nietzsche is not best read as a participant in the standard free will/determinism debate; in sections 4–6, I try to spell out the ethical conception of freedom that he develops instead. (shrink)

This article argues against the no-self or nonegological account of bodily self-awareness. It proposes an account of consciousness that challenges Miri Albahari's forceful defence of a nonegological view of consciousness, particularly its sharp distinction between subject and self. It contends that the subject of experience is a bodily subject and not merely an embodied one and argues that in order to be a subject of experience even in the minimal sense of witnessing-from-a-perspective, one must be prereflectively aware of oneself as (...) a living body. It also argues in defence of the necessary presence of a minimal bodily sense of self as a constitutive feature of perspectival awareness of the world. (shrink)

Recent philosophical discussions of self-knowledge have focused on basic cases: our knowledge of our own thoughts, beliefs, sensations, experiences, preferences, and intentions. Empiricists argue that we acquire this sort of self-knowledge through inner perception; rationalists assign basic self-knowledge an even more secure source in reason and conceptual understanding. I try to split the difference. Although our knowledge of our own beliefs and thoughts is conceptually insured, our knowledge of our experiences is relevantly like our perceptual knowledge of the external world.

Philosophers commonly wonder what a constructivist theory as applied to practical reasons might look like. For the methods or procedures of reasoning familiar from moral constructivism do not clearly apply generally, to all practical reasons. The paper argues that procedural specification is not necessary, so long as our aims are not first‐order but explanatory. We can seek to explain how there could be facts of the matter about reasons for action without saying what reasons we have. Explanatory constructivism must assume (...) constructive “norms of practical reasoning” which yield particular truths without assuming them. But philosophers often mistakenly assume that only “formal” norms of reasoning could fulfill this role. The paper describes a further possibility: norms of reasoning can be “situation‐specific” and yet retain truth‐independent authority. Though we might doubt whether such norms can be independently defended, we should not doubt the possibility or coherence of constructivism about practical reasons. (shrink)

This essay outlines an account of virtue ethics applied to the profession of journalism. Virtue ethics emphasizes character before consequences, requires the "good" prior to the "right," and allows for agent-relative as well as agent-neutral values. This essay offers an exploration of the internal characteristics of a good journalist by focusing on moral virtues crucial to journalism. First, the essay outlines the general tenets of Aristotelian virtue ethics. Second, it offers arguments touting virtue ethics in comparison with other popular normative (...) theories such as Mill's utilitarianism and Kant's deontology. Finally, an original account of journalistic virtue ethics is offered, with an emphasis on the virtues of justice and integrity. (shrink)

According to the standard analysis, humor theories can be classified into three neatly identifiable groups:incongruity, superiority, and relief theories. Incongruity theory is the leading approach and includes historical figures such as Immanuel Kant, Søren Kierkegaard, and perhaps has its origins in comments made by Aristotle in the Rhetoric. Primarily focusing on the object of humor, this school sees humor as a response to an incongruity, a term broadly used to include ambiguity, logical impossibility, irrelevance, and inappropriateness. The paradigmatic Superiority theorist (...) is Thomas Hobbes, who said that humor arises from a “sudden glory” felt when we recognize our supremacy over others. Plato and Aristotle are generally considered superiority theorists, who emphasize the aggressive feelings that fuel humor. The third group, Relief theory, is typically associated with Sigmund Freud and Herbert Spencer, who saw humor as fundamentally a way to release or save energy generated by repression. In addition, this article will explore a fourth group of theories of humor: play theory. Play theorists are not so much listing necessary conditions for something’s counting as humor, as they are asking us to look at humor as an extension of animal play. (shrink)

Berys Gaut has recently articulated and defended a putatively anti-definitional ‘cluster’ theory of art. In the first part of this paper, I argue that Gaut's version of the cluster account is flawed. The key notion of ‘counting toward the application of a concept’ is formulated in such a way that a range of apparently irrelevant properties will count as criterial for the concept of art. Moreover, there does not appear to be any quick fix to this problem. I then turn (...) to an exploration of the relationship between the cluster theory and the possibility of defining art. Gaut has claimed that the truth of the cluster account would provide an independent basis for rejecting the possibility of an adequate definition of art. I argue that this is not the case. But while the truth of the cluster account is consistent with definition, I also argue that it would not entail the definability of art in any ordinary sense. (shrink)

What is the relation between intelligence and computation? Although the difficulty of defining `intelligence' is widely recognized, many are unaware that it is hard to give a satisfactory definition of `computational' if computation is supposed to provide a non-circular explanation for intelligent abilities. The only well-defined notion of `computation' is what can be generated by a Turing machine or a formally equivalent mechanism. This is not adequate for the key role in explaining the nature of mental processes, because it is (...) too general, as many computations involve nothing mental, nor even processes: they are simply abstract structures. We need to combine the notion of `computation' with that of `machine'. This may still be too restrictive, if some non-computational mechanisms prove to be useful for intelligence. We need a theory-based taxonomy of {\em architectures} and {\em mechanisms} and corresponding process types. Computational machines my turn out to be a sub-class of the machines available for implementing intelligent agents. The more general analysis starts with the notion of a system with independently variable, causally interacting sub-states that have different causal roles, including both `belief-like' and `desire-like' sub-states, and many others. There are many significantly different such architectures. For certain architectures (including simple computers), some sub-states have a semantic interpretation for the system. The relevant concept of semantics is defined partly in terms of a kind of Tarski-like structural correspondence (not to be confused with isomorphism). This always leaves some semantic indeterminacy, which can be reduced by causal loops involving the environment. But the causal links are complex, can share causal pathways, and always leave mental states to some extent semantically indeterminate. (shrink)

The most interesting and perilous issue at present in comparative religious ethics is comparative ethical judgment—when and how to judge others, if at all. There are understandable historical and conceptual reasons for the current tendency to prefer descriptive over normative work in comparative religious ethics. However, judging those we study is inescapable—it can be suppressed or marginalized but not eliminated. Therefore, the real question is how to judge others (and ourselves) well, not whether to judge. Instead of bringing supposedly universal (...) moral scoring systems to bear on reified "traditions" and "cultures," it would be better to focus on the precise details of particular practices, motifs, and theories in various settings, and compare them with an eye to substantive issues of current ethical concern. (shrink)

" This book has been carefully crafted in that spirit.

This collection of essays takes as its focus Mitscherling’s comprehensive phenomenological analysis of embodiment, aesthetic experience, the interpretation of texts, moral behavior, and cognition, and exemplifies subsequent work in the field of realist phenomenology being conducted by an international collection of active scholars influenced by Mischerling’s Aesthetic Genesis.

The paper suggests that the state is subject to assessment according to principles of social justice because state institutions or practices exercise forms of power over which no particular person has control. This rationale for assessment of social justice equally applies to legally optional or informal social practices. But it does not apply to individual conduct. Indeed, it follows that principles of social justice cannot provide a basis for the assessment and guidance of individual choice. The paper develops this practice-based (...) conception of the subject of justice by rejoining G. A. Cohen's influential critique of Rawls’ focus on the “basic structure” of society. (shrink)

Given the close relationship between the modern arms industry and the military, engineers and other professionals who work in the arms industry should be held accountable to the principles of just war theory. While they do not deploy weapons on the battlefield and are not in the military chain of command, technical professionals nonetheless have a moral duty to abide by principles of jus ad bellum and jus in bello. They are morally responsible both for choosing the companies that employ (...) them (and to whom these companies sell arms) and a well as what types of arms they develop. (shrink)

In this paper, I examine a puzzle that emerges from what J. P. Moreland has called the traditional realist view of quality instances. Briefly put, the puzzle is to figure out how quality instances fit into the overall structure of a concrete particular, given that the traditional realist view of quality instances prima facie seems incompatible with what might be called the traditional realist view of concrete particulars. After having discussed the traditional realist views involved and the puzzle that emerges (...) from their juxtaposition, I propose an alternative realist view of quality instances which resolves the puzzle. In short, the puzzle is solved by treating the distinction between a concrete particular and its quality instances as a distinction of reason, and by adopting the view that the individuating element of a concrete particular must also serve as its unifying element – a view which Moreland, one of traditional realism’s most stalwart contemporary defenders, rejects. (shrink)

This article critically re-reads György Márkus’s seminal Marxism and Anthropology in light of its recent reissue with an introduction by Hans Joas and Axel Honneth. Joas and Honneth problematically identify the normative source of Márkus’s position as an a-historical and extra-natural account of the human. In fact, when the human essence is thought as natural while also historical, developing new powers and needs through changing strategies of socially organized work, Marx’s materialist conception of history can be used to generate a (...) critique of social organizations, relations, and structures that constrain rather than promote such development. Such constraint on developing powers can be read as ‘alienation’ from the human essence. Márkus’s work develops this reading of Marx in a textually sensitive way, but his analysis of alienation in the Economic and Philosophical Manuscripts of 1844 focuses on the individual when such analysis could in fact be profitably extended to apply to groups and the species as whole. (shrink)

This paper develops ‘primitive accumulation’ prior to and then in Karl Marx’s œuvre. By exploring the concept in Adam Smith and Sir James Steuart the paper highlights early influences on Marx’s evolving constructions. Marx’s construction in the Grundrisse begins with a logical determination much like Smith’s and moves, by drawing on Steuart, towards a socio-historical determination of a transitional violence. In Capital, ‘primitive accumulation’ still retains its transitional structure and delimited history, but it also points to the oppressive afterlife of (...) the processes of primitive accumulation. The political key to ‘primitive accumulation’ in Capital flows from determining primitive accumulation as temporally bounded, but having an afterlife in the oppressive social reproduction of capitalist societies. Against deriving political stakes through extended readings of ‘primitive accumulation’, this paper shows that an ‘originating’ view is textually accurate in a way that centres rather than sidelines the social reproduction of oppressions in capitalist societies. (shrink)

This essay argues that R.G. Collingwood's remarks about genre are implausible, and that they stem, despite their apparent origin in his wider account of art, from his failure to take some of his own most important insights seriously enough. Some possible reasons for that failure are suggested; and it is shown that, once the relevant insights are given their proper weight, Collingwood's account commands the resources from which a plausible story about genre might have been constructed. To this extent, the (...) present essay constitutes a defence of Collingwood's philosophy of art. (shrink)

This paper, along with the following paper by John McCarthy, introduces some of the topics to be discussed at the IJCAI95 event `A philosophical encounter: An interactive presentation of some of the key philosophical problems in AI and AI problems in philosophy.' Philosophy needs AI in order to make progress with many difficult questions about the nature of mind, and AI needs philosophy in order to help clarify goals, methods, and concepts and to help with several specific technical problems. Whilst (...) philosophical attacks on AI continue to be welcomed by a significant subset of the general public, AI defenders need to learn how to avoid philosophically naive rebuttals. (shrink)

L'histoire philosophique montre, ou au moins suggère, que toute remise en cause de l'Un s'est accompagnée d'une mise en ordre, et que tout ébranlement de l'ordre s'est achevé en réduction unitaire. Ce balancement se déploie de la métaphysique jusqu'à l'épistémologie. Pour des raisons différentes et avec des méthodes disjointes, Derrida et Goodman ont, chacun, ébranlé l'un des deux piliers qui sous-tendent l'essentiel de la tradition philosophique. Derrida, par le jeu subtil de la différance, a fait vaciller la vaste entreprise de (...) mise en ordre. Goodman, par la profusion de mondes construits et irréductibles les uns aux autres, remet en cause l'aspiration à l'unité. Notre hypothèse consiste à supposer que la mise en échec - si tant est qu'elle soit possible - du diktat de l'unité demande à être pensée conjointement avec la ruine du primat de la mise en ordre. Utilisées à cette fin (qui n'est pas la seule signifiante), les propositions de Goodman et de Derrida, qui charrient les scories de deux longues traditions réputées indépendantes voire antagonistes, bénéficieraient sans doute d'une exploration synchrone. Mais c'est d'abord à la vérité qu'il faudra faire face. Commencer par ce qui aurait dû être l'achèvement. La vérité en tant que garde-fou et en tant que produit de la pensée qui la fonde et s'y confronte. Il s'agit d'ouvrir une brèche dans les obsessions de cette tradition philosophique qui, aussi riche et foisonnante fût-elle, demeure une coupe et donc une incise dans les possibles du réel qu'elle explore et invente. (shrink)

It is initially odd to ask whether Confucianism is compatible with systems of law. Confucian thought has co-existed with Chinese legal systems throughout the various dynasties of China’s long history. Nevertheless, despite the extensive laws that China has boasted, traditional Chinese legal thought is not typically recognized as a genuine rule-of-law system, given its focus on moral development and the “rule of man.” In this essay, we argue that Confucianism, specifically Pre-Qin Confucianism, is compatible with the rule-of-law. We examine the (...) different models of compatibility, including “soft compatibilism” in which we examine whether abstract concepts between Confucianism and legal systems are compatible, as well as co-existing and integrating compatibilism. Co-existing compatibilism sees Confucianism and the law occupying different spheres within the same legal system while integrating compatibilism sees Confucianism and the law coming together into a new system. In this way, Confucianism offers China an alternative to liberal democratic and Marxist theories of law. (shrink)

In earlier work we proposed an account of information grounded in counterfactual conditionals rather than probabilities, and argued that it might serve philosophical needs that more familiar probabilistic alternatives do not. Demir [2008] and Scarantino [2008] criticize the counterfactual approach by contending that its alleged advantages are illusory and that it fails to secure attractive desiderata. In this paper we defend the counterfactual account from these criticisms, and suggest that it remains a useful account of information.

This paper offers a short and biased overview of the history of discussion and controversy about the role of different forms of representation in intelligent agents. It repeats and extends some of the criticisms of the `logicist' approach to AI that I first made in 1971, while also defending logic for its power and generality. It identifies some common confusions regarding the role of visual or diagrammatic reasoning including confusions based on the fact that different forms of representation may be (...) used at different levels in an implementation hierarchy. This is contrasted with the way in the use of one form of representation (e.g. pictures) can be {\em controlled} using another (e.g. logic, or programs). Finally some questions are asked about the role of metrical information in biological visual systems. (shrink)

In her book, Moral Status, Mary Anne Warren defends a comprehensive theory of the moral status of various entities. Under this theory, she argues that animals may have some moral rights but that their rights are much weaker in strength than the rights of humans, who have rights in the fullest, strongest sense. Subsequently, Warren believes that our duties to animals are far weaker than our duties to other humans. This weakness is especially evident from the fact that Warren believes (...) that it is frequently permissible for humans to kill animals for food. Warren’s argument for her view consists primarily in the belief that we have inevitable practical conflicts with animals that make it impossible to grant them equal rights without sacrificing basic human interests. However, her arguments fail to justify her conclusions. In particular, Warren fails to justify her beliefs that animals do not have an equal right to life and that it is permissible for humans to kill animals for food. (shrink)

It is not uncommon to hear that poor school performance, welfare dependancy, youth unemployment, and criminal activity result more from shortcomings in the personal makeup of individuals than from societal forces beyond their control. Are American values declining as so many suggest? And are those values at the root of many social problems today?Shaped by experience and public policies, people's values and social norms do change. What role can or should a democratic government play in shaping values? And how do (...) these values conditon the efficacy of public policy?In this book, six distinguished social scientists identify trends in America's values and their consequences, and consider public policy tools with which some of those values might be changed.Daniel Yankelovich begins with a discussion of how American values have shifted in the last half-century, and argues that affluence is the driving force behind these changes in values. James Q. Wilson argues that destructive habits which can lead to social pathologies, like crime and drug use, are set early in life; he examines how public policy might intervene when children are young to promote better values. David Popenoe maintains that America has veered too far towards industrialist values, and explores the resulting decline of families and many attendant social ills. Nathan Glazer describes the history and present status of the dispute over multicultural education. Jane Mansbridge examines the process of building cooperation, consensus, and public spirit. And George Akerlof and Janet L. Yellen discuss the problem of gang criminality.Inthe past, social scientists have often sidestepped questions about values as undefinable, unquantifiable, and somehow unscientific. The essays in this volume address these questions at last.Henry J. Aaron, director of the Economic Studies program at Brookings, is the authorof numerous books, including most recently Serious and Unstable Condition: Financing America's Health Care (1991), and coeditor of Setting Domestic Priorities (1992). Thomas E. Mann is director of the Brookings Governmental Studies program, coeditor of Media Polls in American Politics (1992), and coauthor of the Renewing Congress series (1993). Timothy Taylor is managing editor of the Journal of Economic Perspectives at Stanford University. (shrink)

Velmans’ paper raises three problems concerning mental causation: (1) How can consciousness affect the physical, given that the physical world appears causally closed? 10 (2) How can one be in conscious control of processes of which one is not consciously aware? (3) Conscious experiences appear to come too late to causally affect the processes to which they most obviously relate. In an appendix Velmans gives his reasons for refusing to resolve these problems through adopting the position (which he labels ‘physicalism’) (...) that ‘consciousness is nothing more than a state of the brain’. The rest of the paper, then, is an attempt to solve these problems without embracing a reductionist physicalism. Velmans’ solution to the first problem is ‘ontological monism combined with epistemological dualism’: First-person and third-person accounts are two different ways of knowing the same facts. This kind of reply is not new; it is, for example, a twist on the position expressed in Davidson (1970). True, there are substantial differences: For one, Davidson reconciles the tension between descriptions of events in mentalistic and physicalist language, not between firstand third-person descriptions of states; for another, Davidson actually provides an argument for his position, although to do so he assumes that there are no psycho-physical (or indeed, psycho-psycho) laws, something which I suspect Velmans would be reluctant to do. Nevertheless, they have in common the idea that the causal efficacy of the mental is not at odds with the causal closure of physics, since a mind-involving causal story is just another way of talking about the same facts that a purely physical causal story talks about. This ‘dual-aspect’ approach is a popular tactic for resolving the mind--body problem, but it has some well-known problems, and it is unfortunate Velmans doesn’t reply to these standard objections. For example, a frequently discussed issue in connection with theories of mental causation is the problem of overdetermination (see, e.g., Unger, 1977; Peacocke, 1979). (shrink)

The way we refer to things in the world is shaped by the immediate physical context as well as the discourse history. But what part of the discourse history is relevant to language use in the present? In four experiments, we combine the study of task‐based conversation with measures of recognition memory to examine the role of physical contextual cues that shape what speakers perceive to be a part of the relevant discourse history. Our studies leverage the differentiation effect, a (...) phenomenon in which speakers are more likely to use a modified expression to refer to an object (e.g., dotted sock) if they had previously described a similar object (e.g., striped sock) than when they had not described a similar object. Two physical cues—the background that framed the to‐be‐described pictures and the position of the pictures in the display—were manipulated to alter perceptions about the relevant discourse context. We measured the rate with which speakers modify referring expressions to differentiate current from past referents. Recognition memory measures following the conversation probed what was and was not remembered about past discourse referents and contexts. Analysis of modification rates indicated that these contextual grouping cues shaped perceptions about the relevant discourse context. The contextual cues did not affect memory for the referents, but the memory for past referents was better for speakers than for listeners. Our findings show that perceptions about the relevant discourse history are a key determinant of how language is used in the moment but also that conversational partners form asymmetric representations of the discourse history. (shrink)