Successfully explaining and replicating the complexity and generality of human and animal learning will require the integration of a variety of learning mechanisms. Here, we introduce a computational model which integrates associative learning (AL) and reinforcement learning (RL). We contrast the integrated model with standalone AL and RL models in three simulation studies. First, a synthetic grid‐navigation task is employed to highlight performance advantages for the integrated model in an environment where the reward structure is both diverse and dynamic. The (...) second and third simulations contrast the performances of the three models in behavioral experiments, demonstrating advantages for the integrated model in accounting for behavioral data. (shrink)

The 18th International Conference on Cognitive Modelling (ICCM 2020) brought together researchers whose goal is to develop computational simulations of the mind, and to use those simulations to test theories about how the mind works. In this special issue, we present four top papers from ICCM 2020. Two of these address the challenge of scaling up to more complex tasks, and the other two address the challenge of scaling down to connect these computational models to neuroscience.

Most computational theories of cognition lack a representation of physiology. Understanding the cognitive effects of compounds present in the environment is important for explaining and predicting changes in cognition and behavior given exposure to toxins, pharmaceuticals, or the deprivation of critical compounds like oxygen. This research integrates physiologically based pharmacokinetic (PBPK) model predictions of caffeine concentrations in blood and tissues with ACT-R's fatigue module to predict the effects of caffeine on fatigue. Mapping between the PBPK model parameters and ACT-R model (...) parameters is informed by the neurophysiological literature and established associations between ACT-R modules and brain regions. The results from three such parameter mappings are explored to explain observed data from sleep-deprived participants performing the psychomotor vigilance test with and without caffeine. Predicted caffeine concentrations in the brain are used to modulate procedural parameters in the fatigue module to explain caffeine's effects on multiple performance metrics. (shrink)

Cognition in work teams has been predominantly understood and explained in terms of shared cognition with a focus on the similarity of static knowledge structures across individual team members. Inspired by the current zeitgeist in cognitive science, as well as by empirical data and pragmatic concerns, we offer an alternative theory of team cognition. Interactive Team Cognition (ITC) theory posits that (1) team cognition is an activity, not a property or a product; (2) team cognition should be measured and studied (...) at the team level; and (3) team cognition is inextricably tied to context. There are implications of ITC for theory building, modeling, measurement, and applications that make teams more effective performers. (shrink)

Visual working memory is a construct hypothesized to store a small amount of accurate perceptual information that can be brought to bear on a task. Much research concerns the construct's capacity and the precision of the information stored. Two prominent theories of VWM representation have emerged: slot-based and continuous-resource mechanisms. Prior modeling work suggests that a continuous resource that varies over trials with variable capacity and a potential to make localization errors best accounts for the empirical data. Questions remain regarding (...) the variability in VWM capacity and precision. Using a novel eye-tracking paradigm, we demonstrate that VWM facilitates search and exhibits effects of fixation frequency and recency, particularly for prior targets. Whereas slot-based memory models cannot account for the human data, a novel continuous-resource model does capture the behavioral and eye tracking data, and identifies the relevant resource as item activation. (shrink)

In team-based tasks, successful communication and mutual understanding are essential to facilitate team coordination and performance. It is well-established that an important component of human conversation is the maintenance of common ground. Maintaining common ground has a number of associated processes in which conversational participants engage. Many of these processes are lacking in current synthetic teammates, and it is unknown to what extent this lack of capabilities affects their ability to contribute during team-based tasks. We focused our research on how (...) teams package information within a conversation, by which we mean specifically whether information is explicitly mentioned or implied, and how multiple pieces of information are ordered both within single communications and across multiple communications. We re-analyzed data collected from a simulated remotely-piloted aerial system task in which team members had to specify speed, altitude, and radius restrictions. The data came from three experiments: the “speech” experiment, the “text” experiment, and the “evaluation” experiment. We asked first whether teams settled on a specific routine for communicating the speed, altitude, and radius restrictions, and whether this process was different if the teams communicated in speech compared to text. We then asked how receiving special communication instructions in the evaluation experiment impacted the way the human teammates package information. We found that teams communicating in either speech or text tended to use a particular order for mentioning the speed, altitude, and radius. Different teams also chose different orders from one another. The teams in the evaluation experiment, however, showed unnaturally little variability in their information ordering and were also more likely to explicitly mention all restrictions even when they did not apply. Teams in the speech and text experiments were more likely to leave unnecessary restrictions unmentioned, and were also more likely to convey the restrictions across multiple communications. The option to converge on different packaging routines may have contributed to improved performance in the text experiment compared some of the conditions in the evaluation experiment. (shrink)

The fields of machine learning (ML) and cognitive science have developed complementary approaches to computationally modeling human behavior. ML's primary concern is maximizing prediction accuracy; cognitive science's primary concern is explaining the underlying mechanisms. Cross-talk between these disciplines is limited, likely because the tasks and goals usually differ. The domain of e-learning and knowledge acquisition constitutes a fruitful intersection for the two fields’ methodologies to be integrated because accurately tracking learning and forgetting over time and predicting future performance based on (...) learning histories are central to developing effective, personalized learning tools. Here, we show how a state-of-the-art ML model can be enhanced by incorporating insights from a cognitive model of human memory. This was done by exploiting the predictive performance equation's (PPE) narrow but highly specialized domain knowledge with regard to the temporal dynamics of learning and forgetting. Specifically, the PPE was used to engineer timing-related input features for a gradient-boosted decision trees (GBDT) model. The resulting PPE-enhanced GBDT outperformed the default GBDT, especially under conditions in which limited data were available for training. Results suggest that integrating cognitive and ML models could be particularly productive if the available data are too high-dimensional to be explained by a cognitive model but not sufficiently large to effectively train a modern ML algorithm. Here, the cognitive model's insights pertaining to only one aspect of the data were enough to jump-start the ML model's ability to make predictions—a finding that holds promise for future explorations. (shrink)

The fields of machine learning (ML) and cognitive science have developed complementary approaches to computationally modeling human behavior. ML's primary concern is maximizing prediction accuracy; cognitive science's primary concern is explaining the underlying mechanisms. Cross-talk between these disciplines is limited, likely because the tasks and goals usually differ. The domain of e-learning and knowledge acquisition constitutes a fruitful intersection for the two fields’ methodologies to be integrated because accurately tracking learning and forgetting over time and predicting future performance based on (...) learning histories are central to developing effective, personalized learning tools. Here, we show how a state-of-the-art ML model can be enhanced by incorporating insights from a cognitive model of human memory. This was done by exploiting the predictive performance equation's (PPE) narrow but highly specialized domain knowledge with regard to the temporal dynamics of learning and forgetting. Specifically, the PPE was used to engineer timing-related input features for a gradient-boosted decision trees (GBDT) model. The resulting PPE-enhanced GBDT outperformed the default GBDT, especially under conditions in which limited data were available for training. Results suggest that integrating cognitive and ML models could be particularly productive if the available data are too high-dimensional to be explained by a cognitive model but not sufficiently large to effectively train a modern ML algorithm. Here, the cognitive model's insights pertaining to only one aspect of the data were enough to jump-start the ML model's ability to make predictions—a finding that holds promise for future explorations. (shrink)

The study of human cognition and the study of artificial intelligence (AI) have a symbiotic relationship, with advancements in one field often informing or creating new work in the other. Human cognition has many capabilities modern AI systems cannot compete with. One such capability is the detection, identification, and resolution of knowledge gaps (KGs). Using these capabilities as inspiration, we examine how to incorporate detection, identification, and resolution of KGs in artificial agents. We present a paradigm that enables research on (...) the understanding of KGs for visual-linguistic communication. We leverage and enhance and existing KG taxonomy to identify possible KGs that can occur for visual question answer (VQA) tasks and use these findings to develop a classifier to identify questions that could be engineered to contain specific KG types for other VQA datasets. Additionally, we examine the performance of different VQA models through the lens of KGs. (shrink)

The study of human cognition and the study of artificial intelligence (AI) have a symbiotic relationship, with advancements in one field often informing or creating new work in the other. Human cognition has many capabilities modern AI systems cannot compete with. One such capability is the detection, identification, and resolution of knowledge gaps (KGs). Using these capabilities as inspiration, we examine how to incorporate detection, identification, and resolution of KGs in artificial agents. We present a paradigm that enables research on (...) the understanding of KGs for visual-linguistic communication. We leverage and enhance and existing KG taxonomy to identify possible KGs that can occur for visual question answer (VQA) tasks and use these findings to develop a classifier to identify questions that could be engineered to contain specific KG types for other VQA datasets. Additionally, we examine the performance of different VQA models through the lens of KGs. (shrink)

We use the Newell Test as a basis for evaluating ACT-R as an effective architecture for cognitive engineering. Of the 12 functional criteria discussed by Anderson & Lebiere (A&L), we discuss the strengths and weaknesses of ACT-R on the six that we postulate are the most relevant to cognitive engineering.

Can moral disagreements be rationally resolved? Can universal human rights be defended in face of moral disagreements? The problem of moral disagreement is one of the central problems in moral thinking. It also provides a stimulating stepping-stone to some of the perennial problems of philosophy, such as relativism, scepticism, and objectivity. _Moral Disagreements_ is the first anthology to bring together classic and contemporary readings on this key topic. Clearly divided into five parts; The Historical Debate; Voices from Anthropology; Challenges to (...) Moral Objectivity; Defenses of Moral Objectivity; and New Directions, the anthology presents readings from the following key thinkers: * Sextus, Empiricus, Chagnon, Wong, MacIntyre * Aquinas, Shweder, Brink, Rawls * Montaigne, Turner, Nussbaum, Narayan * Hume, Mackie, Gewirth * Nietzsche, Williams, Berlin. A distinctive feature of the anthology is that it brings philosophers into dialogue with well-known anthropologists. Also included is a comprehensive introduction by Christopher Gowans, introducing the problem of moral disagreement to those coming to the topic for the first time. (shrink)

This is a series of short summaries and brief overviews of many main ideas within general semantics, all couched in the style of personal letters. It is designed to give people an intimate view into many insights offered with general semantics, and just as equally, it represents how principles of general semantics can be applied within everyday life.

In this article, I argue that the practice of civil disagreement has robust epistemic benefits and that these benefits enable meaningful forms of reconciliation—across worldview lines and amid the challenging information environment of our age. I then engage two broad groups of objections: either that civil disagreement opposes, rather than promotes, clarity, or else that it does little to help it. If successful, my account gives us reason to include civil disagreement among what Mill calls “the real morality of public (...) discussion,” a fact that should stir us to take more seriously the decline of civility in contemporary life. (shrink)

Studies Plato's approach to argumentation, exploring his role as logician, rhetorician, and dialectician in a way that sees these three aspects working together.

In books making the argument for animal ethics, most works either do not address the religious tradition of ethics or use the religious tradition to argue against animal ethics. This book stands out by addressing the ethics of animals within the religious tradition of moral theology and engaging it to create a new ethics. Chris Steck's book seeks to present a comprehensive, Catholic theology of animals and an ethical response to them. His claim first is that animals are part of (...) the kingdom to come (and therefore part of the eschtological framework) therefore animals should be included within the same ethical framework as humans. And, second, he claims that eschatology is not just about the future (after death) but also about the present. Further, he includes any animal with "significant intellectual capacities" as part of the definition of "animal," demonstrating the need to develop traditional teaching in this area. Given what we now know about animals from contemporary scientific investigations and how interpretations of Genesis have evolved, it makes sense to revise our theological ethics. (shrink)

The paper is a defense of the thesis that there are situations in which morally virtuous persons who are epistemic peers may disagree about what to do without either person being rationally required to change his or her judgment (a version of the Steadfast position in the epistemology of disagreement debate). The argument is based in part on similarities between decisions of virtuous agents and other practical decisions such as a baseball manager’s decision to change pitchers during a game. In (...) both cases, the role and responsibilities of the person making the decision and the complexities of the decision favor the Steadfast position. At the end of the paper, the argument for this position is compared with discussions of traditional arguments against moral objectivity that are based onmoral disagreements, and it is suggested that they involve rather different considerations. (shrink)

Recent work in argumentation theory has emphasized the nature of arguers and arguments along with various theoretical perspectives. Less attention has been given to the third feature of any argumentative situation - the audience. This book fills that gap by studying audience reception to argumentation and the problems that come to light as a result of this shift in focus. Christopher W. Tindale advances the tacit theories of several earlier thinkers by addressing the central problems connected with audience considerations (...) in argumentation, problems that earlier philosophical theories overlook or inadequately accommodate. The main tools employed in exploring the central issues are drawn from contemporary philosophical research on meaning, testimony, emotion and agency. These are then combined with some of the major insights of recent rhetorical work in argumentation to advance our understanding of audiences and suggest avenues for further research. (shrink)

Fallacies and Argument Appraisal presents an introduction to the nature, identification, and causes of fallacious reasoning, along with key questions for evaluation. Drawing from the latest work on fallacies as well as some of the standard ideas that have remained relevant since Aristotle, Christopher Tindale investigates central cases of major fallacies in order to understand what has gone wrong and how this has occurred. Dispensing with the approach that simply assigns labels and brief descriptions of fallacies, Tindale provides fuller (...) treatments that recognize the dialectical and rhetorical contexts in which fallacies arise. This volume analyzes major fallacies through accessible, everyday examples. Critical questions are developed for each fallacy to help the student identify them and provide considered evaluations. (shrink)

The essays in this volume illuminate a central topic in ethical theory: moral dilemmas. Some contemporary philosophers dispute the traditional view that a true moral dilemma -- a situation in which a person has two irreconcilable moral duties -- cannot exist. This collection provides the historical background to the ongoing debate with selections from Kant, Mill, Bradley, and Ross. The best recent work on the question is represented in essays by Donagan, Foot, Hare, Marcus, Nagel, van Fraassen, Williams, and others.

Our lives are such that moral wrongdoing is sometimes inescapable for us. We have moral responsibilities to persons which may conflict and which it is wrong to violate even when they do conflict. Christopher W. Gowans argues that we must accept this conclusion if we are to make sense of our moral experience and the way in which persons are valuable to us. In defending this position, he critically examines the recent moral dilemmas debate. He maintains that what is (...) important in this debate is not whether there are irresolvable moral conflicts, but whether there are moral conflicts in which wrongdoing is unavoidable. Though it would be incoherent to conclude moral deliberation by deciding to perform incompatible actions, he argues that there is nothing incoherent in supposing that we have conflicting moral responsibilities. In this way, he shows that it is possible to capture the intuitions of those who have defended the idea of moral dilemmas while meeting the objections of those who have rejected this idea. Gowans carefully evaluates utilitarian and Kantian analyses of moral dilemmas. He argues that these approaches eliminate genuine moral conflict only by displacing persons as direct objects of moral concern. As an alternative, he develops a more concrete account in which moral responsibilities to persons are central. The book also includes discussions of Melville's Billy Budd, methodology in moral philosophy, moral pluralism, moral tragedy, and "dirty hands" in politics. (shrink)

When any man, even in political society, renders himself by his crimes obnoxious to the public, he is punished by the laws in his goods and person; that is, the ordinary rules of justice are, with regard to him, suspended for a moment, and it becomes equitable to inflict on him, for the benefit of society, what otherwise he could not suffer without wrong or injury?

This innovative text reinvigorates argumentation studies by exploring the experience of argument across cultures, introducing an anthropological perspective into the domains of rhetoric, communication, and philosophy. The Anthropology of Argument fills an important gap in contemporary argumentation theory by shifting the focus away from the purely propositional element of arguments and onto how they emerge from the experiences of peoples with diverse backgrounds, demonstrating how argumentation can be understood as a means of expression and a gathering place of ideas and (...) styles. Confronting the limitations of the Western tradition of logic and searching out the argumentative roles of place, orality, myth, narrative, and audience, it examines the nature of multi-modal argumentation. Tindale analyzes the impacts of colonialism on the field and addresses both optimistic and cynical assessments of contextual difference. The results have implications for our understanding of contemporary argumentative discourse in areas marked by deep disagreement, like politics, law and social policy. The book will interest scholars and upper-level students in communication, philosophy, argumentation theory, anthropology, rhetoric, linguistics, and cultural studies. (shrink)

Research Articles Christopher W. Morris, Social Philosophy and Policy, FirstView Article.

Many situations require the simultaneous processing of auditory and visual information, however, stimuli presented to one sensory modality can sometimes interfere with processing in a second sensory modality (i.e., modality dominance). The current study further investigated modality dominance by examining how task demands and bimodal presentation affect speeded auditory and visual discriminations. Participants in the current study had to quickly determine if two words, two pictures, or two word-picture pairings were the same or different, and we manipulated task demands across (...) three different conditions. In an immediate recognition task, there was only one second between the two stimuli/stimulus pairs and auditory dominance was found. Compared to the respective unimodal baselines, pairing pictures and words together slowed down visual responses and sped up auditory responses. Increasing the interstimulus interval to four seconds and blocking verbal rehearsal weakened auditory dominance effects, however, conflicting and redundant visual cues sped up auditory discriminations. Thus, simultaneously presenting pictures and words had different effects on auditory and visual processing, with bimodal presentation slowing down visual processing and speeding up auditory processing. These findings are consistent with a proposed mechanism underlying auditory dominance, which posits that auditory stimuli automatically grab attention and attenuate/delay visual processing. (shrink)

One of the most noteworthy features of David Gauthier's rational choice, contractarian theory of morality is its appeal to self-interested rationality. This appeal, however, will undoubtedly be the source of much controversy and criticism. For while self-interestedness is characteristic of much human behavior, it is not characteristic of all such behavior, much less of that which is most admirable. Yet contractarian ethics appears to assume that humans are entirely self-interested. It is not usually thought a virtue of a theory that (...) its assumptions are literally false. What may be said on behalf of the contractarian? (shrink)

This important book is the first serious philosophical examination of the modern state. It inquires into the justification of this particular form of political society. It asks whether all states are 'nation-states', what are the alternative ways of organizing society, and which conditions make a state legitimate. The author concludes that, while states can be legitimate, they typically fail to have the powers that they claim. Many books analyze government and its functions but none focuses on the state as a (...) distinctive form of political organization or examines critically the claims states make for themselves. In filling this lacuna Christopher Morris has written a book that will command the attention of political philosophers, political scientists, legal theorists, and specialists in international relations. (shrink)

In any field, we might expect different features relevant to its understanding and development to receive attention at different times, depending on the stage of that field’s growth and the interests that occupy theorists and even the history of the theorists themselves. In the relatively young life of argumentation theory, at least as it has formed a body of issues with identified research questions, attention has almost naturally been focused on the central concern of the field—arguments. Focus is also given (...) to the nature of arguers and the position of the evaluator, who is often seen as possessing a “God’s-eye view” (Hamblin 1970). Less attention, however, has been paid in the philosophical literature to the .. (shrink)

We analyze the “Logical fallacies and reasonable debates in invasion biology: a response to Guiaşu and Tindale” article by Frank et al., and also discuss this work in the context of recent intense debates in invasion biology, and reactions by leading invasion biologists to critics of aspects of their field. While we acknowledge the attempt by Frank et al., at least in the second half of their paper, to take into account more diverse points of view about non-native species and (...) their complex roles in ecosystems, we also find the accusations of misrepresenting invasion biology, for instance by “cherry-picking” and “constructing ‘straw people’”, directed at the Guiaşu and Tindale study to be unwarranted. Despite the sometimes harsh responses by leading invasion biologists to critics of their field, we believe that persistent and fundamental problems remain in invasion biology, and we discuss some of these problems in this article. Failing to recognize these problems, and simply dismissing or minimizing legitimate criticisms, will not advance the cause, or enhance the general appeal, of invasion biology and will prevent meaningful progress in understanding the multiple contributions non-native species can bring to various ecosystems worldwide. We recommend taking a more open-minded and pragmatic approach towards non-native species and the novel ecosystems they are an integral part of. (shrink)

In 1958, Chaïm Perelman and Lucie Olbrechts-Tyteca published Traité de l'argumentation: La nouvelle rhétorique, the culmination of many years study. A seminal work in philosophy and rhetoric, it aimed to bring classical Aristotelian rhetoric into the modern era and present a model of argumentation that promoted action and reasonableness. One distinctive feature of the dense account found in this work is the claim that the success of argumentation can in part be measured by the responses of the audience for which (...) it is intended. By that standard, the project of the new rhetoric appears unsuccessful, because the audience for whom Perelman (and Olbrechts-Tyteca) expressly wrote was the audience least captivated by .. (shrink)

This paper discusses the fundamental sense in which the components of an argument should be relevant to the intended audience. In particular, the evidence advanced should be relevant to the facts and assumptions that are manifest in the cognitive environment of the audience. A version of Sperber and Wilson's concept of the cognitive environment is applied to argumentative concerns, and from this certain features of audience-relevance are explored: that the relevance of a premise can vary with the audience; that irrelevant (...) premises can be made relevant; that evidence can be relevant by degrees; and that this notion of relevance will assist the argumentation analyst in the identification and assessment of hidden premises. (shrink)

Concern for one's "reputation" has been introduced in recent game theory enabling theorists to demonstrate the rationality ofcooperative behavior in certain contexts. And these impressive results have been generalized to a variety of situations studied bystudents of business and business ethicists. But it is not clear that the notion of reputation employed has much explanatory power onceone sees what is meant. I also suggest that there may be some larger lessons about the notion of rationality used by decision theorists.

Abstract:Concern for one’s “reputation” has been introduced in recent game theory enabling theorists to demonstrate the rationality of cooperative behavior in certain contexts. And these impressive results have been generalized to a variety of situations studied by students of business and business ethicists. But it is not clear that the notion of reputation employed has much explanatory power once one sees what is meant. I also suggest that there may be some larger lessons about the notion of rationality used by (...) decision theorists. (shrink)

ABSTRACT Discourses conceal as much as they reveal, but in their concealment they may invite an audience into the silences of the gaps and pauses they contain in order to reflect and find insight. The moments of opportunity provided by these gaps suggest two sides to the concept of kairos, capturing both the ability of the author/speaker to create the opportune moment in the discourse, and the ability of the reader/listener to see that moment and the experience it invites.

The first book of its kind, Buddhist Moral Philosophy: An Introduction introduces the reader to contemporary philosophical interpretations and analyses of Buddhist ethics. It begins with a survey of traditional Buddhist ethical thought and practice, mainly in the Pali Canon and early Mahāyāna schools, and an account of the emergence of Buddhist moral philosophy as a distinct discipline in the modern world. It then examines recent debates about karma, rebirth and nirvana, well-being, normative ethics, moral objectivity, moral psychology, and the (...) issue of freedom, responsibility and determinism. The book also introduces the reader to philosophical discussions of topics in socially engaged Buddhism such as human rights, war and peace, and environmental ethics. (shrink)

On the Edge of Anarchy completes A. John Simmons's exploration and development of Lockean moral and political philosophy, a project begun in The Lockean Theory of Rights (Princeton, 1992). In this new book, Simmons discusses the Lockean view of the nature of, grounds for, and limits on political relations between persons. Locke's ideas on this topic are probably the most influential in the history of political thought, but their philosophical virtues and implications have remained largely unappreciated. Here Simmons remedies this (...) situation by treating Locke as a philosopher, rather than as a theologian or an activist writing rhetorical political tracts. Locke's works emerge not as episodes in the history of ideas but as bodies of arguments addressing the same questions as contemporary philosophy. This book pursues the issues Locke raises far beyond the boundaries of his own texts and theories. By criticizing, streamlining, and developing Locke's views, Simmons elaborates a powerful Lockean political philosophy with strongly anarchistic implications. On the Edge of Anarchy will interest not only Locke specialists and political philosophers, but also students and professionals in philosophy, government, and law - and all others who are interested in the foundational political principles embraced and celebrated by Anglo-American societies. (shrink)

Amartya Sen was awarded the Nobel Memorial Prize in Economics in 1998 'for his contributions in welfare economics'. Although his primary academic appointments have been mostly in economics, Sen is also an important and influential social theorist and philosopher. His work on social choice theory is seminal, and his writings on poverty, famine, and development, as well his contributions to moral and political philosophy, are important and influential. Sen's views about the nature and primacy of liberty also make him a (...) major contemporary liberal thinker. This volume of essays on aspects of Sen's work is aimed at a broad audience of readers interested in social theory, political philosophy, ethics, public policy, welfare economics, the theory of rational choice, poverty, and development. Written by a team of well-known experts, each chapter provides an overview of Sen's work in a particular area and a critical assessment of his contributions to the field. (shrink)

The sovereignty of the people, it is widely said, is the foundation of modern democracy. The truth of this claim depends on the plausibility of attributing sovereignty to “the people” in the first place, and I shall express skepticism about this possibility. I shall suggest as well that the notion of popular sovereignty is complex, and that appeals to the notion may be best understood as expressing several different ideas and ideals. This essay distinguishes many of these and suggests that (...) greater clarity at least would be obtained by focusing directly on these notions and ideals and eschewing that of sovereignty. My claim, however, will not merely be that the notion is multifaceted and complex. I shall argue as well that the doctrine that the people are, or ought to be, sovereign is misleading in potentially dangerous ways, and is conducive to a misunderstanding of the nature of politics, governance, and social order. It would be well to do without the doctrine, but it may be equally important to understand its errors. Our understandings and justifications of democracy, certainly, should dispense with popular sovereignty. (shrink)

It is usually assumed that what Lewis says about the given in Mind and the World-Order (MWO) and An Analysis of Knowledge and Valuation (AKV) is essentially the same, and that both works are defenses of foundationalism. However, this assumption faces two problems: first, it is difficult to bring Lewis's diverse remarks on the given into coherence, especially when those in MWO are compared with those in AKV; and second, though AKV is a defense of foundationalism, there is much in (...) MWO that can be read as a critique of foundationalism. In this paper a different reading of Lewis is proposed, one that avoids these problems. This is developed by going farther back in Lewis, to his Harvard Ph.D. dissertation, The Place of Intuition in Knowledge (PIK). By tracing Lewis's discussion of the given from PIK through MWO up to AKV, it is shown that the phrase 'the given' is used to refer to two different doctrines, and that Lewis's position on foundationalism undergoes a fundamental change, roughly, from indifference to rejection to acceptance. (shrink)

The paper examines Walton‘s concept of fallacy as it develops throughthree stages of his work: from the early series of papers co-authored withJohn Woods; through a second phase of involvement with thepragma-dialectical perspective; and on to the final phase in which heoffers a distinct pragmatic theory that reaches beyond the perceived limitsof the pragma-dialectical account while still exhibiting a debt to thatperspective and the early investigations with Woods. It is observed how Walton‘s model of fallacy is established in distinction to (...) its competitors,and its various problems and successes are discussed. (shrink)