En philosophie, l'ontologie étudie ce qui pourrait exister : le type et la structure des objets, les propriétés, évènements, processus et relations. En ingénierie des connaissances, c'est la spécification de la conceptualisation d'un domaine de savoir. Ce domaine concerne ici la modélisation à base d'agents (ABM) pour les sciences de l'homme et de la société (SHS) en vue de la simulation par systèmes multi-agents (SMA). La modélisation SMA en SHS propose la formalisation d'une pluralité de points (...) de vue dans un cadre général qui permet de comparer et de combiner différents angles de réflexion. Agrémenté d'exemples issus de trois domaines (la géographie, l'économie et la sociologie), cet ouvrage utilise des formalismes principalement basés sur UML. L'exercice de description d'une ontologie est présenté comme un dialogue conceptuel interdisciplinaire et l'ontologie comme le médiateur de ce dialogue. (shrink)

The article focuses on the study of workplace learning for hospital’s staff to become mortuary care agents. It is based on the analysis of verbalizations obtained from self-confrontations interviews made with the mortuary care trainees. These interviews are extracted from video recordings taken while trainees carry out their normal task. The goal is to identify, within the context of the interaction between trainees and tutors, signs of learning progress in the trainees’ verbalizations, which could be linked to existing hospital standards. (...) As demonstrated by the activity clinic methodology, these verbalizations are not just a simple depiction of the work activity as it happened but serve as an experiment to underline the learning benefits for the trainees. Beyond the benefits of better understanding the trainees work tasks, the resulting analyses indeed support the formative aspect of self-confrontation interviews. In this perspective, the article focuses on a methodological aspect, the data analysis to account for signs of learning such as verbalized and recognized by the trainees in their interactions with tutors. On the occasion, we question the formative dimension of this methodological setting in the prospect of designing training devices for these professionals. (shrink)

Cet article présente une approche quantitative appliquée à la concurrence suffixale dans la formation des adjectifs dénominaux en russe. Le but est, dans un premier temps, d’étudier les adjectifs de haute et basse fréquence et d’établir les propriétés phonologiques, morphologiques et sémantiques des noms de base qui déterminent le choix entre les suffixes -n- et -sk- dans les deux ensembles de données grâce à des méthodes statistiques. Dans un second temps, l’objectif est de mesurer à quel point la connaissance (...) des particularités des adjectifs de haute fréquence est applicable pour prédire le suffixe des adjectifs issus des basses fréquences. (shrink)

Condorcet's jury theorem shows that when the members of a group have noisy but independent information about what is best for the group as a whole, majority decisions tend to outperform dictatorial ones. When voting is supplemented by communication, however, the resulting interdependencies between decision makers can strengthen or undermine this effect: they can facilitate information pooling, but also amplify errors. We consider an intriguing non-human case of independent information pooling combined with communication: the case of nest-site choice by honeybee (...) (Apis mellifera) swarms. It is empirically well documented that when there are different nest sites that vary in quality, the bees usually choose the best one. We develop a new agent-based model of the bees' decision process and show that its remarkable reliability stems from a particular interplay of independence and interdependence between the bees. (shrink)

Pour l’épistémologue, mais aussi pour le théoricien de l’éthique, la théorie thomienne des modèles présente un intérêt particulier. Elle établit que la connaissance, ainsi que toutes les catégorisations abstraites qui en résultent, sont façonnées en première instance par les morphologies d’événements qui s’offrent à nos sens. L’intérêt de cette approche épistémologique pour l’éthique est de répondre au problème de son universalisation. Alors que l’éthique traditionnelle fonde la justification sur des principes qui, linguistiquement ancrés, peinent à s’imposer au-delà des cultures particulières, (...) la théorie thomienne des modèles ouvre la voie à un nouveau type d’aide à la décision qui est fondé sur un mode de connaissance universel : la topologie. Cet article expose les fondements épistémologiques de la théorie thomienne, pour ensuite en proposer une application originale aux conflits éthiques.For both the epistemologist and the ethicist, René Thom’s model theory is of particular interest. It assumes that knowledge, as well as all forms of abstract categorizations, are shaped by the morphologies that we perceive. The benefit of Thom’s epistemological approach is then to contribute to the problem of universalization in ethics. Whereas traditional theories in ethics elaborate justification with language-based principles that cannot be applied universally, René Thom’s model theory leads to a new modeling of ethics based on a universal form of knowledge : topology. This paper sets forth the epistemological foundations of Thom’s theory, and then proposes an application to ethical conflicts. (shrink)

Current research in Explainable AI includes post-hoc explanation methods that focus on building transparent explaining agents able to emulate opaque ones. Such agents are naturally required to be accurate and trustworthy. However, what it means for an explaining agent to be accurate and trustworthy is far from being clear. We characterize accuracy and trustworthiness as measures of the distance between the formal properties of a given opaque system and those of its transparent explanantes. To this aim, we extend Probabilistic Computation (...) Tree Logic with operators to specify degrees of accuracy and trustworthiness of explaining agents. We also provide a semantics for this logic, based on a multi-agent structure and relative model-checking algorithms. The paper concludes with a simple example of a possible application. (shrink)

This paper presents two formation tracking control strategies for a combined set of single and double integrator agents with an arbitrary undirected communication topology. The first approach is based on the design of distance-based potential functions with interagent collision avoidance using local information about the distance and orientation between agents and the desired trajectory. The second approach adds signed area constraints to the desired formation specification and a control strategy that uses distance as well as area terms is designed to (...) achieve tracking convergence. Numerical simulations show the performance from both control laws. (shrink)

The expressive power of logic is believed to be able to model most of the fundamental aspects of information retrieval. However, it is also understood that classical logic is ineffective for handling partiality and uncertainty in IR. Applying non-classical logics such as the AGM belief revision logic and the possibilistic logic to adaptive information retrieval is appealing since they provide a powerful and rigorous framework to model partiality and uncertainty inherent in any IR processes. The maxi-adjustment method, which is an (...) effective computational apparatus of the AGM paradigm, is applied to develop the learning components of the adaptive information agents. Essentially, maxi-adjustment allows the partial representation K of a user's information needs N to be refined gradually based on the user's relevance feedback t. Generally speaking, learning in adaptive information agents is characterised by the AGM belief revision Kt*. On the other hand, possibilistic logic supports a gradated assessment of the uncertainty arising from matching K with the imperfect characterisation d of an information object D. Information matching in adaptive information agents is underpinned by K ƕ d, where ƕ is the possibilistic inference relation. This paper illustrates how maxi-adjustment and possibilistic deduction can be applied to develop the adaptive information agents. Their impact on the agents learning autonomy and explanatory power is also discussed. (shrink)

This paper is a summary of the research developed in the author’s Ph.D. programme. The case study deals with the implementation of Energy Efficiency policies in the Building sector of the Lazio Region and carries out an ABM analysis of the impacts of training on the social actors involved. Its purpose is to reproduce the social mechanisms through the study of the actors’ actions with ABM in order to evaluate socio-economic impacts by interconnecting the social and economic variables by means (...) of the Social Accounting Matrix. (shrink)

This paper advances the Hunt–Vitell General Theory of Marketing Ethics as a framework for enriching current understanding of both long-term marketing relationships in general, and principal-agent associations specifically. Under economic models of agency theory, manufacturer-distributor relationships are conceptualized as principal-agent associations where both parties are assumed be motivated exclusively by short-term financial self-interest within the logical constraints of zero-sum game conditions. As a general model of ethical decision making and behavior in marketing, the Hunt–Vitell theory illustrates how ethical decisions are (...) predicated not only upon estimations of potential benefits or outcomes (using teleological criteria), but also deontological evaluations which invoke norms and values. Furthermore, the recent ideas advanced in "relationship marketing" perspectives suggest that distribution channel associations premised upon non-zero-sum or symbiotic assumptions may be more effective and more jointly profitable. Based upon the Hunt–Vitell model, propositions are formulated that complement the understanding of agency theory within the context of marketing channel relationships, and thus, may represent a basis for more effective agency selection and interaction in marketing practice. (shrink)

This poster presents results from applying agent-based modeling to an exploration of risk attitudes and rational decision making in the context of group interaction. We are also interested in the place of agent-based modeling and computational philosophy within the computational humanities. Computational philosophy has not typically been included in Digital Humanities; computational work has been done using philosophy texts as a source for analysis (Kinney 2022; Malaterre et al. 2021; Fletcher et al. 2021; Zahorec et al. 2022), but there are (...) few examples of philosophical arguments being made based on computation (Zahorec et al. 2022). Modeling is largely accepted as a computational humanist method (McCarty 2004; So 2022), but typically models are based on data rather than designed simulations as a method analogous to a thought experiment (Mayo-Wilson / Zollman 2021). Agent-based modeling is not as common in computational humanities, but we are interested in its potential; for instance, see work modeling correspondence networks to better understand lost information and biases in correspondence data sets (Buarque / Vogl 2023), or work simulating past human societies (Romanowska et al. 2021). Our project explores Lara Buchak’s theory of risk-weighted rational decision making by extending it to the context of group populations and interactions. Buchak has proposed risk-weighted expected utility maximization, which incorporates individual risk attitudes into the standard expected utility (EU) calculation based on utility and probability of outcomes (Buchak 2017). This theory provides an explanation for differences of behavior seen in human populations, while still allowing those different choices to be rational. Buchak’s theory has previously only been applied to individual decision making; our work uses agent-based modeling to develop and analyze simulations which incorporate a variety of risk attitudes (risk avoidance and risk seeking) into game theoretic interactions. This project is a collaboration between a philosopher and a research software engineer; we have worked together to develop simulations that implement agents with risk attitudes making risky choices. This presentation focuses on results from an implementation of a hawk/dove game with multiple risk attitudes and risk attitude adjustment. In the hawk/dove game cooperation, or playing dove, is better for the population, but acting aggressively, or playing hawk, is better for an individual if they are in a neighborhood of doves. To set up the game, we place agents on a grid and have them play against each of their neighbors, and accumulate payoffs based on the success of their plays. We define risk attitudes 0 through 9, where that number corresponds to the minimum number of neighbors playing dove for an agent to play hawk. An agent with risk attitude 0 is most risk seeking and always plays hawk; an agent with risk attitude 1 will play hawk if at least one neighbor plays dove; an agent with risk attitude 9 always takes the safe choice and plays dove; an agent with risk attitude 4 or 5 is risk neutral (breaking ties in different ways), which corresponds to expected utility. In this simulation we randomly set agent initial risk attitudes, and then every ten rounds agents compare their payoffs with their neighbors and adopt the most successful risk attitude in their neighborhood. The simulation is coded to stop once risk attitude adjustments stabilize. We define 13 different population states based on primary and second majority of risk averse, risk inclined, or risk moderate, and analysis of over 1 million runs indicate that while it’s more likely to stabilize with the population having become majority risk inclined, that is not the only outcome; we also see cases where the population stabilizes as risk neutral, risk avoidant, and many cases with no clear majority. This diversity of stable populations provides support for the argument that no one risk attitude is uniquely rational, but rather that risk attitudes are conventional. This matches what we observe in the real world: that different populations have different risk attitudes. Our simulations include numerous parameters to vary grid size; adjustment frequency, strategy, and wealth comparison; neighborhood sizes for observing previous choice, playing against, and comparing payoffs for adjusting risk attitudes; and different distributions for initializing risk attitudes. Analysis of parameters and adjusted risk attitudes shows that the strongest correlations are the initial distribution of risk attitudes, which tend to be preserved. * * * This poster was accepted and presented at the DH2024 conference in Washington, D.C. (shrink)

We develop a conceptually clear, intuitive, and feasible decision procedure for testing satisfiability in the full multi\-agent epistemic logic \CMAELCD\ with operators for common and distributed knowledge for all coalitions of agents mentioned in the language. To that end, we introduce Hintikka structures for \CMAELCD\ and prove that satisfiability in such structures is equivalent to satisfiability in standard models. Using that result, we design an incremental tableau-building procedure that eventually constructs a satisfying Hintikka structure for every satisfiable input set of (...) formulae of \CMAELCD\ and closes for every unsatisfiable input set of formulae. (shrink)

Court D. Lewis, author of Repentance and the Right to Forgiveness, presents a rights-based theory of ethics grounded in eirenéism, a needs-based theory of rights (inspired by Nicholas Wolterstorff) that seeks peaceful flourishing for all moral agents. This approach creates a moral relationship between victims and wrongdoers such that wrongdoers owe victims compensatory obligations. However, one further result is that wrongdoers may be owed forgiveness by victims. This leads to the “repugnant implication” that victims may be wrongdoers who do not (...) forgive. Author Lewis addresses the “repugnant implication” by showing that victims are obligated to work toward forgiveness, if not forgiveness itself. Critic Gregory L. Bock argues that victims are not the only ones who can forgive, that the personal dimensions of forgiveness are overlooked, and that the force of the “repugnancy implication” may be questioned. Instead of rights-based eirenéism, Bock supports a virtue ethics framework. Instead of rights-based eirenéism, Bock encourages virtue ethics. Critic David Boersema raises questions about the binding nature of relationships, the dependency of flourishing upon forgiveness, and the nature of needs or rights. Boersema also questions the wisdom of a rights-based approach to forgiveness. Critic Jennifer Kling asks whether a rights-based approach is necessary to ground obligations to meet the needs of others: why not an ethics of care? If a rights-based approach is taken, perhaps a wrongdoer is obligated to not make forgiveness a life good. By disengaging this obligation, we avoid constraining a victim’s work toward forgiveness, especially when the wrongdoing is oppressive. Author Lewis responds to these objections. (shrink)

Several authors, including Thomas Nagel and David Gauthier, have defended the view that reasons of self-interest (prudential reasons) are rationally binding. That is, there is always a reason, bearing on the rational advisability, based on one's self-interest and, as a result, a person may act irrationally by knowingly acting against such reasons regardless of the person's desires or values. Both Nagel and Gauthier argue from the rationally mandatory nature of prudential reasons to the conclusion that moral reasons can be rationally (...) mandatory, challenging the neo-Humean position that practical reasons that bear on an agent's rationality are essentially grounded on the agent's subjective, contingent, conative states. I argue, pace Nagel and Gauthier, that prudential reasons are not rationally mandatory--that the rational requirement to act in one's own interest, when it exists, is, as the neo-Humean insists, grounded on one's subjective, contingent, conative states. Prudential reasons are not reasons for every (conceivable) agent--not in the sense that bears on the rational advisability of action. (shrink)

We present an informational view of classical propositional logic that stems from a kind of informational semantics whereby the meaning of a logical operator is specified solely in terms of the information that is actually possessed by an agent. In this view the inferential power of logical agents is naturally bounded by their limited capability of manipulating “virtual information”, namely information that is not implicitly contained in the data. Although this informational semantics cannot be expressed by any finitely-valued matrix, it (...) can be expressed by a non-deterministic 3-valued matrix that was first introduced by W.V.O. Quine, but ignored by the logical community. Within the general framework presented in [21] we provide an in-depth discussion of this informational semantics and a detailed analysis of a specific infinite hierarchy of tractable approximations to classical propositional logic that is based on it. This hierarchy can be used to model the inferential power of resource-bounded agents and admits of a uniform proof-theoretical characterization that is half-way between a classical version of Natural Deduction and the method of semantic tableaux. (shrink)

This article discusses R. G. Collingwood’s account of re-enactment and Donald Davidson’s account of radical translation. Both Collingwood and Davidson are concerned with the question “how is understanding possible?” and both seek to answer the question transcendentally by asking after the heuristic principles that guide the historian and the radical translator. Further, they both agree that the possibility of understanding rests on the presumption of rationality. But whereas Davidson’s principle of charity entails that truth is a presupposition or heuristic principle (...) of understanding, for Collingwood understanding rests on a commitment to internal consistency alone. Collingwood and Davidson diverge over the scope of the principle of charity because they have radically different conceptions of meaning. Davidson endorses an extensional semantics that links meaning with truth in the attempt to extrude intensional notions from a theory of meaning. Since radical translation rests on a truth-conditional semantics, it rules out the possibility that there may be statements that are intelligible even though based on false beliefs. Collingwood’s account of re-enactment, on the other hand, disconnects meaning from truth, thereby allowing for the possibility of understanding agents who have false beliefs. The paper argues, first, that Davidson’s account of radical translation rests on inappropriately naturalistic assumptions about the nature of understanding, and that Davidson commits this error because he develops his account of radical interpretation in response to an epistemological question that is motivated by a skeptical concern: “how can we know whether we have provided the correct interpretation?” Second, that in the twentieth century far too much philosophizing has been driven by epistemological concerns that have obscured attempts to provide adequate answers to the sort of conceptual question with which Collingwood is concerned, namely: “what does it mean to understand?”. (shrink)

Empirical evidence indicates that much of human behavior is unconscious and automatic. This has led some philosophers to be skeptical of responsible agency or personhood in the moral sense. I present two arguments defending agency from these skeptical concerns. My first argument, the “margin of error” argument, is that the empirical evidence is consistent with the possibility that our automatic behavior deviates only slightly from what we would do if we were in full conscious control. Responsible agency requires only that (...) our actions more or less express our conscious goals and values. My second argument is a non-realist defense of moral agency. If we are willing to reject metaethical realism about agents, then there may be good reasons why we should retain the concept of agency in our moralizing, even if automaticity undermines the belief that we are really in conscious control of our behavior. We can do this by adopting a “reactive attitudes” approach to moral responsibility. On this view, agency is determined not by actual features of human psychology but by the attitudes and practices that we ought to adopt in response to the actions and motivations of individuals. (shrink)

This paper provides a brief overview and critique of the dominant objectivist understanding and use of illness narrative in Enlightenment (scientific) medicine and ethics, as well as several revisionist accounts, which reflect the evolution of this approach. In light of certain limitations and difficulties endemic in the objectivist understanding of illness narrative, an alternative phronesis approach to medical ethics influenced by Charles Taylor’s account of the interpretive nature of human agency and language is examined. To this end, the account of (...) interpretive medical responsibility previously described by Schultz and Carnevale as "clinical phronesis" (based upon Taylor’s notion of "strong" or "radical evaluation") is reviewed and expanded. The thesis of this paper is that illness narrative has the ability to benefit patients as well as the potential to cause harm or iatrogenic effects. This benefit or harm is contingent upon how the story is told and understood. Consequently, these tales are not simply "nice stories," cathartic gestures, or mere supplements to scientific procedures and decision making, as suggested by the objectivist approach. Rather, they open the agent to meanings that provide a context for explanation and evaluation of illness episodes and therapeutic activities. This understanding provides indicators (guides) for right action. Hence, medical responsibility as clinical phronesis involves, first, the patient and provider’s coformulation and cointerpretation of what is going on in the patient’s illness narrative, and second, the patient and provider’s response to interpretation of the facts of illness and what they signify–not simply a response to the brute facts of illness, alone. The appeal to medical responsibility as clinical phronesis thus underscores the importance of getting the patient’s story of illness right. It is anticipated that further elaboration concerning the idea of clinical phronesis as interpretive illness narrative will provide a new foundation for medical ethics and decision making. (shrink)

The purpose of this article is to present a summary of a consistent European Union (EU) energy and energy-related emissions outlook for the period to 2020. The material presented here is based on quantitative analysis and on a process of communication with and feedback from a number of energy experts and organizations. All the results presented for EU energy trends are based on the PRIMES partial equilibrium model for the European energy system, version 2. The PRIMES model provides simulation of (...) the energy system and the decisions of the agents and the markets, covering in detail several sectors, uses, and technologies. The results of this analysis indicate that the EU will not meet the obligations for greenhouse gas emissions reductions it undertook at Kyoto unless it introduces policy initiatives for the abatement of energy-related emissions. Although the industrial, tertiary, household, and transportation sectors can all make significant contributions to CO2 emissions reductions, the electricity- and steam-generation sector appears to offer the greatest potential because of its relative flexibility in terms of technology and fuel choice. Finally, when the only criterion for emissions reductions is economic efficiency, our analysis indicates that reduction levels differ significantly among EU countries. (shrink)

The author presents an ethical theory which, as he admits, has much in common with the theories of M. Cohen, R. Sellars, H. Feigl, C. Lamont, and G. Williams. His first task is to define the scientific world view on which his ethical conclusions will be based. It comprises the following suppositions, logically derived from and justified by scientific practice: there is a real world independent of the knower, natural events are uniform, every event is related to some other events, (...) everything is in constant change, all changes are orderly, causes are efficient not final. Before the good life can be defined, science must define human nature, i.e., man's basic and universal needs, which are: physical health, recognition, love, excitement and novelty, knowledge. The good life must satisfy all these needs, but since this may be done improperly, a condition must be added: that satisfaction must come from a real adjustment to the environment in the long run. Moral rules must be both happiness-producing and life-promoting. This framework allows for diversity in moral codes. Determinism does not conflict with morality, for the only freedom that morality presupposes is the absence of external or irrational causes. An act is free to the extent that it is determined by the agent's self-knowledge. The book ends with a brief discussion of the problems of overpopulation, pollution, and world-scale planning.--T. D. Z. (shrink)

ABSTRACT A number of authors have recently advanced a ‘disjunctivist’ view of the rationalising explanation of action, on which rationalisations of the form ‘S A’d because p’ are explanations of a fundamentally different kind from rationalisations of the form ‘S A’d because she believed that p’. Less attempt has been made to explicitly articulate the case against this view. This paper seeks to remedy that situation. I develop a detailed version of what I take to be the basic argument against (...) disjunctivism, drawing on a framework of explanatory proportionality. The disjunctivist cannot reject this framework, I argue, because they need it to respond to another challenge, from psychological individualism. As I explain, however, the proportionality-based challenge is not in principle insurmountable, and I outline a number of ways in which a case for disjunctivism might be developed in response to it. The paper thus clarifies the dialectic around disjunctivism about the rationalisation of action and, specifically, what advocates of the view must do in order to make a compelling case for it. (shrink)

This collection of nine previously unpublished papers is a valuable and important addition to current discussions of free action. Each of the essays deserves, and will no doubt get, careful attention, but those by Donald Davidson, D. C. Dennett and David Pears will probably attract most interest. Davidson suggests that freedom to act be construed as a causal power of the agent, and offers in clarification an analysis of "can" in terms of what the agent will do given desires and (...) beliefs which "rationalize" that action. His discussion throws fresh light on hypothetical, and other, analyses of "can," but Davidson eventually rejects his own suggested analysis, thus leaving obscure the original claim that freedom to act is a causal power. Dennett approaches in a fresh way, based on a distinction between the different stances we might adopt to appropriately functioning entities, the question of the relation between mechanical and rational explanations of behavior. He argues that the two are compatible, and that while certain mechanical explanations may conflict with the ascription of responsibility, this is not always or necessarily the case. Pears argues against the view that explanation in terms of reasons and desires cannot be construed deterministically, concentrating on the issue of whether such explanation presupposes empirical generalizations linking reasons with actions. This complex and often obscure discussion touches on a variety of important topics, among them the difference between production and mere succession, and the extent to which our knowledge of our own reasons is immune from error. (shrink)

This paper explicates how we might positively understand the distinctive, nonconceptual experience of our own actions and experiences by drawing on insights from a radically enactive take on phenomenal experience. We defend a late-developing relationalism about the emergence of explicit, conceptually based self-awareness, proposing that the latter develops in tandem with the mastery of self-reflective narrative practices. Focusing on the case of human newborns, Sect. 1 reviews and rejects claims that the capacities of actors to keep track of aspects of (...) themselves—e.g. their bodies, body parts, movements, activities, actions and experiences—when coordinating what they do equates to or is best explained by positing minimal, tacit awareness of their experiences as their own. Section 2 then considers and resists more familiar arguments, based on the so-called reflexivity thesis, that take such minimal self-awareness to be implied wherever there is any kind of phenomenal experience. In place of these ideas, we promote an alternative proposal of what is involved when agents keep track of aspects of themselves, drawing on a radically enactive conception of basic experience. Section 3 concludes by proposing that our first conceptual, explicit sense of self is something that only arrives on the scene once we become able to hold our own—through the support of others—in discursive, narrative practices that give us a conceptual grip on what it is to be a temporally extended self that persists over time. (shrink)

Child moral agency is dismissed in many historical and contemporary accounts based on children's supposed lack or marginal possession of agency-bearing capacities, including reason, deliberation, and judgment, amongst others. Given its prominence in the philosophical canon, I call this the traditional view of child agency. Recent advancements in moral developmental psychology challenge the traditional view, pointing toward the possession of relevant capacities and competencies for moral and responsible agency in early and middle childhood. I argue that both views—traditional and developmental—underdetermine (...) our practices of holding children responsible in our common interactions. For one, we face significant epistemic barriers in accurately assessing children’s agential status qua possession of responsibility-bearing capacities and competencies. Second, overreliance on assessments of individualistic capacities emphasizes an atomistic view of agency at the expense of relational views that are of particular relevance for children as uniquely developing persons. Our practices of holding children responsible and the values that guide these practices in the context of supportive relationships are central to both supporting current and drawing out future responsible agency in childhood and, importantly, provide us with a path to regard children as participants in our moral communities, as opposed to mere agents-in-waiting. (shrink)

This paper explores the embedding of data producing technologies in people's everyday lives and practices. It traces how repeated encounters with digital data operate to naturalise these entities, while often blindsiding their agentive properties and the ways they get implicated in processes of exploitation and governance. I propose and develop the notion of ‘data doxa’ to conceptualise the way in which digital data – and the devices and platforms that stage data – have come to be perceived in Western societies (...) as normal, necessary and enabling. The ‘data doxa’ concept also accentuates the enculturation of many individuals into a data sharing habitus which frames digital technologies in simplistic terms as panaceas for the problems associated with contemporary life, figures of progress and convenience, and mediums of knowledge, pleasure and identity. I suggest that three types of data-based relations contribute to the formation of this doxic sensibility: fetishisation, habit and enchantment. Each of these relations come to mediate public understandings of digital devices and the data they generate, obscuring the multifaceted nature and hidden depths of data and their propensity to double up as technologies of exposure and discipline. As a result of this situation, imaginative educational programs and revamped regulatory frameworks are urgently needed to inform individuals about the contribution of data to the leveraging of value and power in today's digital economies, but also to protect them from experiencing data-based harms. (shrink)

Gave 42 19-26 yr. old insomniac Ss placebo pills to take a few min. before going to bed. Some Ss were told that the pills would cause arousal, and others were told that the pills would reduce arousal. As predicted, arousal Ss got to sleep more quickly than they had on nights without the pills, presumably because they attributed their arousal to the pills rather than to their emotions, and as a consequence were less emotional. Also as predicted, relaxation Ss (...) got to sleep less quickly than usual, presumably because they assumed that their emotions were unusually intense since their arousal level was high even after taking an arousal-reducing agent. Results have relevance for S. Schachter's theory of emotions and H. Kelley's attribution theory. Pragmatically, findings suggest the feasibility of a therapy based on reattribution of symptoms, and indicate that traditional suggestion effect practices should be modified. (shrink)

The Malabo Declaration places the transformation of agriculture and food systems at the centre of regional and national policy priorities across Africa. Transformative change in the way that food is produced, processed and consumed is seen as not only necessary for addressing the complex challenges of food security and poverty alleviation, but also as a driver of new employment opportunities and economic development. As pointed out within the recent UN Food Systems Summit, essential elements of food system transformations include digital (...) transitions and the empowerment of women and youth. However, there are few empirical examples demonstrating how these agendas come together to affect food system change. Here we focus on an enterprising group of young farmers referred to as Malawi’s _new achikumbe elite_, who are urban based, educated and engaging in agriculture on a commercial basis. The aim is to characterise this emergent group of agriculturalists and to understand the role that they have within the transformation of Malawi-s agricultural sector. We explore how digital platforms are supporting the emergence of this new category of farmer and positioning young people as agents of change in food systems transformation. Based on interviews and ethnographic research with 32 young farmers between 2018 and 2022 combined with interviews with representatives of service providers and agricultural organisations, we argue that this group is characterised by a higher level of education, self-dependency and use of digital platforms, enabling them to adapt their context to sourcing production resources and engaging in commercial agriculture. We present evidence that digital platforms are supporting the new achikumbe elite (NAE) to engage flexibly with new commercial markets, contracts and access a wider range of training and advice. However, while digital platforms can offer more equitable access to information and market opportunities, they also represent potential avenues for food system transformations that are inequitable. As such, we argue that there is need for digital technologies to mitigate against potential inequalities. (shrink)

De la drosophile à la souris, en passant par le poisson-zèbre, les organismes modèles façonnent le paysage de la biologie contemporaine. Au sein des pratiques de modélisation en sciences, ces modèles sont non seulement très particuliers, mais font aussi l’objet d’utilisations très variées. Dans ce contexte, cet article vise deux objectifs : d’une part, proposer une description suffisamment générale pour englober tous les usages qui en sont faits, tout en essayant de caractériser la spécificité de ces modèles. D’autre part, (...) il s’agit de dégager les rôles épistémiques généraux que l’on peut attribuer à ces modèles. Au-delà de leur fonction représentationnelle, nous en proposons deux : celui d’instruments de mesure, et celui de supports pour la découverte d’explications de phénomènes biologiques. (shrink)

WHEN Aristotle takes up the task of establishing the foundations of ethics in the Nicomachean Ethics, he understands this task in a quite different way from many modern moral philosophers. For one thing, he explicitly distinguishes inquiries such as ethics and politics from more precise disciplines such as mathematics, and emphasizes that their end is action rather than knowledge. Moreover, he differs from many modern ethicists in the importance which he assigns to knowledge of what to do in a concrete (...) situation. Practical knowledge for Aristotle has two indispensable, interrelated components: apprehension of the ultimate end of human action, and practical rationality in virtue of which one knows how to pursue this end in concrete situations. As a moral epistemologist Aristotle is exceptional in the emphasis he places upon practical rationality. Even if one correctly apprehends the ultimate end, knowing how to attain it in action is no trivial matter of perfunctorily applying general precepts. Henry Veatch illustrates this important feature of Aristotle's thought by relating it to Sartre's anecdote of the young man who sought his advice during World War II as to whether he should stay with his mother or join the Free French forces. Veatch contends that Aristotle would agree with Sartre that a general apprehension of the end will not provide us with a priori recipes for answering "concrete moral questions," such as the dilemma posed in Sartre's anecdote. He would also agree that the young man must work out the answer for himself in the immediate context of action. But Veatch's Aristotle maintains, against Sartre, that moral agents can and should work out answers through "practical moral knowledge." Although this is an appealing construal of Aristotle's conception of rationality in action, it is not without opposition. John Cooper has challenged it in favor of the interpretation that deliberation may be completed with a decision on a type of action prior to the time of action. Cooper bases this interpretation on an extensive review of the texts. Nevertheless, as this essay attempts to show, the textual evidence clearly supports an interpretation along the lines suggested by Veatch. Section I considers the evidence concerning practical rationality and deliberation, and Section II that concerning practical insight and observation. (shrink)

David KC Cooper,1 David Ayares21Thomas E Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA; 2Revivicor, Blacksburg, VA, USA: The transplantation of organs and cells from pigs into humans could overcome the critical and continuing problem of the lack of availability of deceased human organs and cells for clinical transplantation. Developments in the genetic engineering of pigs have enabled considerable progress to be made in the experimental laboratory in overcoming the immune barriers to successful xenotransplantation. With regard to (...) pig organ xenotransplantation, antibody- and cell-mediated rejection have largely been overcome, and the current major barrier is the development of coagulation dysregulation. This is believed to be due to a combination of immune activation of the vascular endothelial cells of the graft and molecular incompatibilities between the pig and primate coagulation–anticoagulation systems. Pigs with new genetic modifications specifically directed to this problem are now becoming available. With regard to less complex tissues, such as islets, neuronal cells, and corneas, the remaining barriers are less problematic, and graft survival in nonhuman primate models extends for >1 year in all three cases. In planning the initial clinical trials, consideration will be concentrated on the risk–benefit ratio, based to a large extent on the results of preclinical studies in nonhuman primates. If the benefit to the patient is anticipated to be high, eg, insulin-independent control of glycemia, and the potential risks low, eg, minimal risk of transfer of a porcine infectious agent, then a clinical trial would be justified.Keywords: infection, pigs, genetically-engineered, xenotransplantation, islets, xenotransplantation, organs. (shrink)

In the literature of belief revision, it is widely accepted that: there is only one revision phase in belief revision which is well characterized by the Bayes’ Rule, Jeffrey’s Rule, etc.. However, as I argue in this article, there are at least four successive phases in belief revision, namely first/second order evaluation and first/second order revision. To characterize these phases, I propose mainly four rules of belief revision based on agent’s criteria, and make one composition rule to characterize belief revision (...) as a whole. (shrink)

Humans routinely make inferences about both the contents and the workings of other minds based on observed actions. People consider what others want or know, but also how intelligent, rational, or attentive they might be. Here, we introduce a new methodology for quantitatively studying the mechanisms people use to attribute intelligence to others based on their behavior. We focus on two key judgments previously proposed in the literature: judgments based on observed outcomes (you're smart if you won the game) and (...) judgments based on evaluating the quality of an agent's planning that led to their outcomes (you're smart if you made the right choice, even if you didn't succeed). We present a novel task, the maze search task (MST), in which participants rate the intelligence of agents searching a maze for a hidden goal. We model outcome‐based attributions based on the observed utility of the agent upon achieving a goal, with higher utilities indicating higher intelligence, and model planning‐based attributions by measuring the proximity of the observed actions to an ideal planner, such that agents who produce closer approximations of optimal plans are seen as more intelligent. We examine human attributions of intelligence in three experiments that use MST and find that participants used both outcome and planning as indicators of intelligence. However, observing the outcome was not necessary, and participants still made planning‐based attributions of intelligence when the outcome was not observed. We also found that the weights individuals placed on plans and on outcome correlated with an individual's ability to engage in cognitive reflection. Our results suggest that people attribute intelligence based on plans given sufficient context and cognitive resources and rely on the outcome when computational resources or context are limited. (shrink)

This paper examines narrativism’s claim that the historical past cannot be known once and for all because it must be continuously re-described from the standpoint of the present. We argue that this claim is based on a non sequitur. We take narrativism’s claim that the past must be re-described continuously from the perspective of the present to be the result of the following train of thought: 1) “all knowledge is conceptually mediated”; 2) “the conceptual framework through which knowledge of reality (...) is mediated changes with every new generation of historians”; therefore (narrativism’s claim) “the historical past changes with every new generation of historians”. The idea of an unchanging past, for the narrativist, requires denying premise 1 (all knowledge is conceptually mediated”) and therefore rests on a problematic commitment to the chimerical notion of the past as it is in-itself, wie es eigentlich gewesen. We argue that the narrativist’s conclusion does not follow unless one adds a further premise, namely 3) “it is not possible to view reality through the categorial framework of historical agents”. If one asserts the possibility of grasping reality through the categorial framework of others, be they contemporary or past agents (as much philosophy of history written in an idealist key does), then one no longer has to accept the narrativist’s inference that since the past cannot be known in-itself or independently of conceptual mediation, then it cannot be known as it always was for the historical agents. Narrativism’s inference that the past cannot be known as it always was does not follow from premises 1 and 2 unless one smuggles in another problematic premise, premise 3. In this paper we defend the claim that the past can be known as it always was (not as it is in-itself) by invoking a different conception of the role of conceptual mediation in historical knowledge, one which assumes the possibility of viewing reality through the categorial framework of others. This notion of the role of conceptual mediation in historical knowledge is prevalent in the idealist tradition but, in the interest of brevity, we will defend this notion of mediacy by specific reference to the idealist philosophy of R.G. Collingwood. (shrink)

Here is an important new theory of human action, a theory that assumes actions are founded on choices made by agents who face an open future.

Human cloning until recently has been considered to belong to the domain of science fiction; now it is a tangible possibility, a hopeful as well as a fearsome one. One of the fears that necessarily come along with it is about the peril cloning might represent for human uniqueness, since the clones are expected to be identical to their prototypes; this would unavoidably compromise moral agents’ right to a unique identity. In this paper I will put under examination the argument (...) against cloning that is based upon the right to a unique identity; I will argue that cloning represents no actual threat for anybody’s unique identity, therefore this argument is futile. I will also support the view that the so-called right to a unique identity is not as indisputable as to serve as the basis of a moral argument against human reproductive cloning. (shrink)

Enactivists have made several forays into the domain of ethical thought over the past decades: their proposals vary in foci and ambition (Colombetti and Torrance in Phenomenol Cogn Sci 8:505–526, 2009, Fourlas and Cuffari in Topoi 41:355–371, 2022, as reported by Di Paolo and De Jaegher (Linguistic bodies: the continuity between life and language, MIT Press, Cambridge, 2022), Pescador Canales and Mojica in Topoi 41:257–274, 2022). Rather than survey that terrain, this paper goes back to basics and revisits a seminal (...) series of lectures by Varela on ethical expertise from 1999 that is standardly cited as a cornerstone for these sundry efforts. It reviews and questions some of the core claims and assumptions Varela makes in his attempt to bring enactivist ideas to bear on moral psychology and ethical expertise. His analysis is revealed to be lacking in crucial respects. Specifically, Varela mischaracterizes and undervalues Aristotle’s contributions to virtue ethics and fails to take stock of a pivotal Aristotelian lesson about what is required for being an ethical agent at all. This paper attempts to rectify that omission. It also considers, afresh, reasons why we should take a neo-Aristotelian approach to virtue ethics and phronesis then seriously today. Doing so, ironically, puts us in a position to directly respond to the concerns Varela raised about the unhealthy dominance of rule-based ethical approaches in Western thought. Finally, the paper shows that if we are interested in understanding how to enact phronesis at least one variety of enactivism—namely, radical enactivism—provides a promising framework for helping us to do so. This is because radical enactivism recognizes the existence of both contentless and contentful modes of cognizing and the need to understand how they interact and influence each other in complex ways. (shrink)

This article traces the emergence of ecomedia in Japan’s nuclear exclusion zone. I take this emergence as an opportunity to think through the relations of sensing technologies and animals as well as the transformative potential of these relations for critical thought. I turn to the camera trap and the Geiger counter first to understand how these sensor-based media are used to generate data around environmental inquiry as well as how they may be reassembled to help us take measure of the (...) aftereffects of the 3.11 disasters through and with located relationships and encounters among species, human and nonhuman. By exploring how ecomedia invite nonhuman makings to enter the analytical frame, I hope to arrive at an understanding of environmental harm not as a futurological threat but as an ongoing event that calls for new forms of agentic thinking and enactments of multispecies struggle and collaboration. (shrink)

Levinas's work persistently challenges the claim that the sovereignty of the ego is the foundation for ethics, a claim he attributes to the Greek philosophical tradition. This claim emerges in dominant accounts of responsibility, in which the agent's intentions define his or her culpability. However, in Oedipus Tyrannos Sophocles also attempts to undermine this strict pairing of responsibility and deliberate choice. Oedipus undergoes a fundamentally Levinasian narrative arc by moving from self-assured sovereignty, based on his ability to comprehend the world, (...) to an awakening to responsibility. In this essay I examine the points of intersection and divergence between the tragic narrative of Oedipus and the traumatic subject in Levinas's work. (shrink)

This chapter examines some of Stone and Parker's “seepage,” looking at episodes that provide excellent cases of the core ideas of libertarianism. One reason for rejecting paternalism is that it causes unintended bad consequences. Libertarians argue that by legalizing illicit substances, supply will increase and, as a result, crime will decrease. Another way to argue in favor of libertarianism is based on the idea that each individual is a rational agent and, because of this, their decisions should be respected. One (...) must be clear when discussing what it means to “respect an individual's agency.” We must respect people because they are autarchic, but not necessarily because of their autonomy. We don't hold non‐autarchic people fully responsible for their actions, nor should we allow them to be fully free from paternalistic influence. (shrink)

Assesses the presuppositions underlying Aristotle's political theory. The principle of teleology holds that human beings strive to fulfil certain natural ends such as rationality and social cooperation; the principle of perfectionism holds that the good for human beings consists in the attainment of these ends; the principle of community holds that individuals can attain the good only if they are subject to the authority of the community, including the state ; and the principle of rulership holds that the community can (...) function successfully only if order is imposed on it by rational agents. This chapter considers the extent to which these principles may be defended against powerful objections that have been raised by modern philosophers and scientists. Finally, it is pointed out that the modern theory of rights, which assumes a version of extreme individualism, faces serious difficulties, so that Aristotle's theory of rights, based on a moderately individualistic theory of justice, is an alternative still worthy of serious consideration. (shrink)

Which harms and benefits should be viewed as relevant when considering whether to launch cyber-measures? In this article, we consider this question, which matters because it is central to determining whether cyber-measures should be launched. Several just war theorists hold a version of what we call the ‘Restrictive View’, according to which there are restrictions on the sorts of harms and benefits that should be included in proportionality assessments about the justifiability of going to war (whether cyber or kinetic). We (...) discuss two such views – the Just Cause Restrictive View and Rights-based Restrictive View – and find both wanting. By contrast, we defend what we call the ‘Permissive View’. This holds that all potential goods and bads should be included in proportionality decisions about cyber-measures, even those that appear to be trivial, and where the various harms and benefits are given different weights, according to their agent-relative and agent-neutral features. We argue further that accepting the Permissive View has broader implications for the ethical frameworks governing cyberwar, both in terms of whether cyberattack provide just cause for coercive responses, including kinetic warfare and cyber-responses, and whether cyber-measures should be governed by just war theory or a new theory for cyber-operations. (shrink)

Traditional epistemic and doxastic logics cannot deal with inconsistent beliefs nor do they represent the evidence an agent possesses. So-called ‘evidence logics’ have been introduced to deal with both of those issues. The semantics of these logics are based on neighbourhood or hypergraph frames. The neighbourhoods of a world represent the basic evidence available to an agent. On one view, beliefs supported by evidence are propositions derived from all maximally consistent collections evidence. An alternative concept of beliefs takes them to (...) be propositions derivable from consistent partitions of one’s inconsistent evidence; this is known as Schotch-Jennings Forcing. This paper develops a modal logic based on the hypergraph semantics to represent Schotch-Jennings Forcing. The modal language includes an operator U(φ1,…,φn;ψ)\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$U(\varphi _1, \ldots, \varphi _n;\psi )$$\end{document} which is similar to one introduced in Instantial Neighbourhood Logic. It is of variable arity and the input formulas enjoy distinct roles. The U operator expresses that all evidence at a particular world that supports ψ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\psi $$\end{document} can be supported by at least one of the φi\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\varphi _i$$\end{document}s. U can then be used to express that all the evidence available can be unified by the finite set of formulas φ1,…,φn\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\varphi _1,\ldots, \varphi _n$$\end{document} if ψ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\psi $$\end{document} is taken to be ⊤\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\top $$\end{document}. Future developments will then use that semantics as the basis for a doxastic logic akin to evidence logics. (shrink)

The Indiana Court of Appeals, in JKB, Sr. v. Armour Pharmaceutical Co. ), held that the state's Blood Shield Act does not protect pharmaceutical companies that produce blood-derived products from product liability suits based on injuries attributable to tainted blood supplies. Blood shield statutes help to guarantee adequate blood supplies by limiting the liability of blood banks. This holding limits the defenses available to pharmaceutical companies sued under product liability theory.The defendant, Armour Pharmaceutical, produces and sells clotting factor agents, which (...) are derived through plasmapheresis. Plasmapheresis is a costly and complex donation process through which the plasma and red blood cells of a donor's blood are separated. After separation, the process returns the red blood cells to the donor but retains the plasma. (shrink)

Planning the first school transition for children with special needs focuses on several objectives: To ensure continuity amongst different children’s life settings; to ease the child’s adaptation and integration in their new environment; to support the school’s preparations in order to better welcome each child with their particularities; to adapt activities according to the child’s needs; and lastly, to encourage full participation of the parents and professionals who know the child. Qualitative-interpretative research allows us to examine the way stakeholders from (...) different sectors, including the parents, planned the transition to kindergarten of children with special needs. Three networks were studied over a period of one year. The results permit us to deepen our understanding of how stakeholders function together, as a network, in order to prepare a quality transition for the targeted children. The article presents a model of the structural and interactional processes involved during these planned transitions; these processes derive from the dynamic created by knowledge-sharing and networking between the stakeholders. The structural processes in turn benefit the stakeholders; specifically by providing opportunities for collective interactions and knowledge-sharing beyond their individual interests. In particular, the stakeholders accepted some shifts in changing roles as they moved from individualistic to collective action. Finally, the time dedicated by the stakeholders, along with the duration of the process, are determined to be key elements contributing to the quality of the entire experience. (shrink)

Le but de cet article est une analyse épistémologique des modèles du mutualisme. À partir de l’analyse Lotka-Volterra, nous chercherons les caractéristiques et les insuffisances épistémologiques de cette famille de modèles. Le travail mathématique de Vito Volterra était une réponse à une situation écologique, la rupture de l’équilibre d’espèces en compétition, considérées comme des espèces « associées ». À partir des équations décrivant les variations de ces populations en compétition, un simple changement de signe suffit pour obtenir les équations décrivant (...) les variations d’effectifs des populations mutualistes. En termes de modélisation, le mutualisme resta longtemps ignoré face au développement des modèles de compétition. Les modèles Lotka-Volterra appliqués au mutualisme aboutissent à un point d’équilibre lorsque les croissances relatives des deux populations sont les mêmes. Des modèles cherchent à distinguer les formes obligatoires et facultatives de mutualisme ; l’existence d’un point d’équilibre et le caractère dominant du mutualisme biologique (obligatoire ou facultatif) sont requis pour la validité de ces modèles. C est ce qui fait leur limite. Depuis la fin des années 1990, divers chercheurs ont mis au point des modèles plus réalistes en termes biologiques, c est-à-dire admettant un passage possible du parasitisme au mutualisme, dans un continuum et selon les densités des deux partenaires. D’un point de vue épistémologique, ces modèles demeurent relatifs au niveau populationnel, donc à l’étude des populations biologiques, ils demandent à être complétés par une analyse du même phénomène biologique au niveau individuel. (shrink)

Agent-causal libertarians maintain we are irreducible agents who, by acting, settle matters that aren’t already settled. This implies that the neural matters underlying the exercise of our agency don’t conform to deterministic laws, but it does not appear to exclude the possibility that they conform to statistical laws. However, Pereboom (Noûs 29:21–45, 1995; Living without free will, Cambridge University Press, Cambridge, 2001; in: Nadelhoffer (ed) The future of punishment, Oxford University Press, New York, 2013) has argued that, if these neural (...) matters conform to either statistical or deterministic physical laws, the complete conformity of an irreducible agent’s settling of matters with what should be expected given the applicable laws would involve coincidences too wild to be credible. Here, I show that Pereboom’s argument depends on the assumption that, at times, the antecedent probability certain behavior will occur applies in each of a number of occasions, and is incapable of changing as a result of what one does from one occasion to the next. There is, however, no evidence this assumption is true. The upshot is the wild coincidence objection is an empirical objection lacking empirical support. Thus, it isn’t a compelling argument against agent-causal libertarianism. (shrink)

In this article, we explore how deep brain stimulation (DBS) devices designed to “close the loop”—to automatically adjust stimulation levels based on computational algorithms—may risk taking the individual agent “out of the loop” of control in areas where (at least apparent) conscious control is a hallmark of our agency. This is of particular concern in the area of psychiatric disorders, where closed-loop DBS is attracting increasing attention as a therapy. Using a relational model of identity and agency, we consider whether (...) DBS designed for psychiatric regulation may require special attention to agency. To do this, we draw on philosophical work on relational identity and agency, connecting it with reports from people using first-generation DBS devices for depression and obsessive-compulsive disorder. We suggest a way to extend a notion of relational agency to encompass neural devices. (shrink)

I argue for an intentional conception of representation in science that requires bringing scientific agents and their intentions into the picture. So the formula is: Agents (1) intend; (2) to use model, M; (3) to represent a part of the world, W; (4) for some purpose, P. This conception legitimates using similarity as the basic relationship between models and the world. Moreover, since just about anything can be used to represent anything else, there can be no unified ontology of models. (...) This whole approach is further supported by a brief exposition of some recent work in cognitive, or usage-based, linguistics. Finally, with all the above as background, I criticize the recently much discussed idea that claims involving scientific models are really fictions. (shrink)