"Why should we care about having true beliefs? And why do demonstrably false beliefs persist and spread despite consequences for the people who hold them? Philosophers of science Cailin O’Connor and James Weatherall argue that social factors, rather than individual psychology, are what’s essential to understanding the spread and persistence of false belief. It might seem that there’s an obvious reason that true beliefs matter: false beliefs will hurt you. But if that’s right, then why is (...) it irrelevant to many people whether they believe true things or not? In an age riven by "fake news," "alternative facts," and disputes over the validity of everything from climate change to the size of inauguration crowds, the authors argue that social factors, not individual psychology, are what’s essential to understanding the persistence of false belief and that we must know how those social forces work in order to fight misinformation effectively."–Publisher’s description. (shrink)

Melanie Sarzano | : In this paper, I compare cases of self-deception and cases of pragmatic encroachment and argue that confronting these cases generates a dilemma about rationality. This dilemma turns on the idea that subjects are motivated to avoid costly false beliefs, and that both cases of self-deception and cases of pragmatic encroachment are caused by an interest to avoid forming costly false beliefs. Even though both types of cases can be explained by the same belief-formation (...) mechanism, only self-deceptive beliefs are irrational: the subjects depicted in high-stakes cases typically used in debates on pragmatic encroachment are, on the contrary, rational. If we find ourselves drawn to this dilemma, we are forced either to accept—against most views presented in the literature—that self-deception is rational or to accept that pragmatic encroachment is irrational. Assuming that both conclusions are undesirable, I argue that this dilemma can be solved. In order to solve this dilemma, I suggest and review several hypotheses aimed at explaining the difference in rationality between the two types of cases, the result of which being that the irrationality of self-deceptive beliefs does not entirely depend on their being formed via a motivationally biased process. | : Dans cet article, je compare les cas classiques de duperie de soi aux cas que l’on trouve dans les débats sur la question de l’empiètement pragmatique et défends l’idée selon laquelle ces deux types de cas peuvent être compris comme étant produits par un même mécanisme visant à éviter la formation de croyances fausses coûteuses. Cette comparaison nous mène naturellement à former un dilemme à propos de la rationalité des croyances. Le dilemme repose sur l’idée que bien que ce mécanisme mène à la formation de croyances irrationnelles dans les cas de duperie de soi, il ne semble pas affecter la rationa-lité du sujet dans les cas d’empiètement pragmatique : alors que les sujets autodupés sont irrationnels, les sujets décrits dans les cas d’empiètement pragmatique ne le sont pas. Pour résoudre ce dilemme sans rejeter les présupposés selon lesquels les croyances issues de la duperie de soi sont irrationnelles et que les cas sur lesquels repose l’empiètement pragmatique sont rationnels, je propose plusieurs hypothèses visant à expliquer cette différence, prouvant ainsi que ce dilemme n’est qu’apparent et que l’irrationalité de la duperie de soi ne peut uniquement dépendre de ce mécanisme sous l’influence de considérations pratiques. (shrink)

The dominant account of human social understanding is that we possess a 'folk psychology', that we understand and can interact with other people because we appreciate their mental states. Recently, however, philosophers from the phenomenological tradition have called into question the scope of the folk psychological account and argued for the importance of 'online', non-mentalistic forms of social understanding. In this paper I critically evaluate the arguments of these phenomenological critics, arguing that folk psychology plays a larger role in human (...) social understanding than the critics suggest. First, I use standard false-belief tasks to spell out the commitments of the folk psychological picture. Next, I explicate the critics' account in terms of Michael Wheeler's distinction between online and offline intelligence. I then demonstrate the challenge that false-belief understanding -- a paradigm case of mental state understanding -- poses to the critics' online, non- mentalistic account. Recent research on false-belief understanding illustrates that mental state understanding comes in both online and offline forms. This challenges the critics' claim that our online social understanding does not require folk psychology. (shrink)

The DSM‐5 highlights two essential psychological features of anorexia nervosa (AN): recalcitrant fear of gaining weight and body image disturbance. Prominent accounts grant false beliefs about body weight and shape a central role in the explanation of AN behavior. In this article, we propose a stronger emphasis on recalcitrant fear. We show that such fear can explain AN behavior without the intermediary of a false belief, and thus without the associated explanatory burdens and conceptual difficulties. We illustrate (...) how shifting the emphasis from false belief to recalcitrant fear can supplement a number of different non‐doxastic models of AN. (shrink)

Recently, a number of cases have been proposed which seem to show that – contrary to widely held opinion – a subject can inferentially come to know some proposition p from an inference which relies on a false belief q which is essential. The standard response to these cases is to insist that there is really an additional true belief in the vicinity, making the false belief inessential. I present a new kind of case suggesting (...) that a subject can inferentially come to know a proposition from an essential false belief where no truth in the vicinity seems to be present. (shrink)

Language has been shown to play a key role in the development of a child’s theory of mind, but its role in adult belief reasoning remains unclear. One recent study used verbal and nonverbal interference during a false-belief task to show that accurate belief reasoning in adults necessarily requires language (Newton & de Villiers, 2007). The strength of this inference depends on the cognitive processes that are matched between the verbal and nonverbal inference tasks. Here, we (...) matched the two interference tasks in terms of their effects on spatial working memory. We found equal success on false-belief reasoning during both verbal and nonverbal interference, suggesting that language is not specifically necessary for adult theory of mind. (shrink)

This paper assumes that success on false-belief tasks requires a kind of folk psychological know-how, i.e. gradable knowledge how to perform skilful social cognitive acts. Following Ryle, it argues the folk psychological know-how required for success on a false-belief task cannot be reduced to conceptual knowledge as this would lead to an infinite regress. Within the skilled performance literature, Intellectualists have attempted to solve Ryle’s regress by appealing to automatic mechanisms similar in kind to some Theory-of-Mind (...) explanations of folk psychology. Exploring this similarity, the paper examines the epistemic commitments of two recent pragmatic Theory-of-Mind accounts of cross-cultural false-belief task data. By drawing on Fridland’s argument against Intellectualist explanations of know-how, it is argued that neither of these pragmatic Theory-of-Mind accounts can adequately explain gradable folk psychological know-how and escape Ryle’s infinite regress objection if these accounts are indeed committed to Intellectualism. The paper ends by supplementing Fenici’s account with the enactive framework to both bolster Fenici’s explanation of false-belief task know-how and avoid Ryle’s regress objection. (shrink)

The use of new paradigms of false belief tasks allowed to reduce the age of children who pass the test from the previous 4 years in the standard version to only 15 months or even a striking 6 months in the nonverbal modification. These results are often taken as evidence that infants already possess an—at least implicit—theory of mind. We criticize this inferential leap on the grounds that inferring a ToM from the predictive success on a false (...) belief task requires to assume as premise that a belief reasoning is a necessary condition for correct action prediction. It is argued that the FBT does not satisfactorily constrain the predictive means, leaving room for the use of belief-independent inferences. These heuristics, when applied to the FBT, can achieve the same predictive success of a belief-based inference because information provided by the test stimulus allows the recognition of particular situations that can be subsumed by their ‘laws’. Instead of solving this issue by designing a single experimentum crucis that would render unfeasible the use of non-representational inferences, we suggest the application of a set of tests in which, although individually they can support inferences dissociated from a ToM, only an inference that makes use of false beliefs is able to correctly predict all the outcomes. (shrink)

False beliefs and misleading evidence have striking similarities. In many regards, they are both epistemically bad or undesirable. Yet, some epistemologists think that, while one’s evidence is normative (i.e., one’s available evidence affects the doxastic states one is epistemically permitted or required to have), one’s false beliefs cannot be evidence and cannot be normative. They have offered various motivations for treating false beliefs differently from true misleading beliefs, and holding that only the latter may be evidence. I (...) argue that this is puzzling: If misleading evidence and false beliefs share so many important similarities, why treat them differently? I also argue that, given the striking similarities between false beliefs and misleading evidence, many arguments for the factivity of evidence overgeneralize. That is, if these arguments were conclusive, they would also entail that the evidence cannot be misleading. But this is an overgeneralization, since the evidence can be misleading. (shrink)

False belief tasks have enjoyed a monopoly in the research on children’s development of a theory of mind. They have been granted this status because they promise to deliver an unambiguous assessment of children’s understanding of the representational nature of mental states. Their poor cousins, true belief tasks, have been relegated to occasional service as control tasks. That this is their only role has been due to the universal assumption that correct answers on true belief tasks (...) are inherently ambiguous regarding the level of the child’s understanding of mental states. It has also been due to the universal assumption that nothing in the child’s developing theory of mind would lead to systematically incorrect answers on true belief tasks. We review new findings that 4- and 5-year-olds do err, systematically and profoundly, on the true belief versions of all the extant belief tasks. This reveals an intermediate level of understanding in the development of children’s theory of mind. Researchers have been unaware of this intermediate level because it produces correct answers in false belief tasks. A simple two-task battery—one true belief task and one false belief task—is sufficient to remove the ambiguity from each task. The new findings show that children do not acquire an understanding of beliefs, and hence a representational theory of mind, until after 6 years of age, or 2 years later than most developmental psychologists have concluded. This raises the question of how to interpret other new findings that infants are able to pass false belief tasks. We review these new infant studies, as well as recent studies on chimpanzees, in light of older children’s failure on true belief tasks, and end with some speculation about how all of these new findings might be reconciled. (shrink)

Many authors have argued that epistemic rationality sometimes comes into conflict with our relationships. Although Sarah Stroud and Simon Keller argue that friendships sometimes require bad epistemic agency, their proposals do not go far enough. I argue here for a more radical claim—romantic love sometimes requires we form beliefs that are false. Lovers stand in a special position with one another; they owe things to one another that they do not owe to others. Such demands hold for beliefs as (...) well. Two facets of love ground what I call the false belief requirement , or the demand to form false beliefs when it is for the good of the beloved: the demand to love for the right reasons and the demand to refrain from doxastic wronging. Since truth is indispensable to epistemic rationality, the requirement to believe falsely, consequently, undermines truth norms. I demonstrate that, when the false belief requirement obtains, there is an irreconcilable conflict between love and truth norms of epistemic rationality: we must forsake one, at least at the time, for the other. (shrink)

The article considers lying as an epistemic attitude, analyzes its structural and substantive characteristics. In particular, it considers the pragmatic consequences of using false beliefs, primarily in scientific practice. It is shown that in a number of cases false epistemic attitudes can play a positive role, mainly as temporary hypothetical or counterfactual assumptions, as well as positive illusions. The paper also analyzes two alternative approaches towards false beliefs: “knowledge-first epistemology” of T. Williamson and “action-first epistemology” in line (...) with epistemic pragmatism. It considers the potential of the latter approach and, in particular, the way of reconciling two seemingly conflicting normative frameworks – for beliefs and for actions. This, in turn, opens the way for building a complex normative system with different “directions of fit” between beliefs and actions on one side and the world on the other. (shrink)

May a doctor treat a patient, despite that patient's refusal, when in his professional opinion treatment is necessary? This is the dilemma which must from time to time confront most physicians. An examination of the validity of such a refusal is provided by the present authors who use the case history of a patient refusing treatment, for cancer as well as for a fractured hip, to evaluate the grounds for intervention in such circumstances. In such a situation the patient is (...) said to have a 'false belief' and it is the doctor's duty to try to change that belief in the patient's interest. The false belief is considered here in terms of the liberty principle, the patient's mental competence and on what is called the 'harm principle' (harm to other individuals or to society). Finally the concept of paternalism is examined. The authors conclude that the doctor must attempt to change a false belief, and if this fails he must examine the patient's mental competence to make the decision to refuse treatment. But in the last analysis the doctor may be under an obligation to respect the patient's refusal. Readers might like to look at (or read again) the papers on 'Liberty' and 'Conscience' published in this Journal under the heading Analysis. (shrink)

The majority of current attention on the question of autonomy has focused on the internal reflection of the agent. The quality of an agent’s reflection on her potential action (or motivating desire or value) is taken to determine whether or not that action is autonomous. In this paper, I argue that there is something missing in most of these contemporary accounts of autonomy. By focusing overwhelmingly on the way in which the agent reflects, such accounts overlook the importance of what (...) the agent is reflecting upon. Whichever of these current formulations of autonomy we accept, reflection could be undertaken in full accordance with the conditions set, and yet the action fail to be autonomous. This will occur, I argue, if the agent is mistaken about the object of her reflection. More precisely, if she has a particular kind of false belief about the action she is contemplating undertaking, then no amount of reflection can render that action autonomous. This suggests the need for externalist conditions to be incorporated into an account of autonomy. (shrink)

Jill de Villiers has argued that children's mastery of sentential complements plays a crucial role in enabling them to succeed at false-belief tasks. Josef Perner has disputed that and has argued that mastery of false-belief tasks requires an understanding of the multiplicity of perspectives. This paper attempts to resolve the debate by explicating attributions of desires and beliefs as extensions of the linguistic practices of making commands and assertions, respectively. In terms of these linguistic practices one (...) can explain why desire-talk will precede belief-talk and why even older children will have difficulty attributing incompatible desires. (shrink)

We explore the developmental paradox of false belief understanding. This paradox follows from the claim that young infants already have an understanding of false belief, despite the fact that they consistently fail the elicited-response false belief task. First, we argue that recent proposals to solve this paradox are unsatisfactory because they (i) try to give a full explanation of false belief understanding in terms of a single system, (ii) fail to provide psychological (...) concepts that are sufficiently fine-grained to capture the cognitive requirements for the various manifestations of false belief understanding, and (iii) ignore questions about system interaction. Second, we present a dual-system solution to the developmental paradox of false belief understanding that combines a layered model of perspective taking with an inhibition-selection-representation mechanism that operates on different levels. We discuss recent experimental findings that shed light on the interaction between these two systems, and suggest a number of directions for future research. (shrink)

This study examines the spontaneous use of embodied egocentric transformation in understanding false beliefs in the minds of others. EET involves the participants mentally transforming or rotating themselves into the orientation of an agent when trying to adopt his or her visuospatial perspective. We argue that psychological perspective taking such as false belief reasoning may also involve EET because of what has been widely reported in the embodied cognition literature, showing that our processing of abstract, propositional information (...) is often grounded in concrete bodily sensations which are not apparently linked to higher cognition. In Experiment 1, an agent placed a ball into one of two boxes and left. The ball then rolled out and moved either into the other box or back into the original one. The participants were to decide from which box they themselves or the agent would try to recover the ball. Results showed that false belief performance was affected by increased orientation disparity between the participants and the agent, suggesting involvement of embodied transformation. In Experiment 2, false belief was similarly induced and the participants were to decide if the agent would try to recover the ball in one specific box. Orientation disparity was again found to affect false belief performance. The present results extend previous findings on EET in visuospatial perspective taking and suggest that false belief reasoning, which is a kind of psychological perspective taking, can also involve embodied rotation, consistent with the embodied cognition view. (shrink)

The poor performances of typically developing children younger than 4 in the first-order false-belief task “Maxi and the chocolate” is analyzed from the perspective of conversational pragmatics. An ambiguous question asked by an adult experimenter (perceived as a teacher) can receive different interpretations based on a search for relevance, by which children according to their age attribute different intentions to the questioner, within the limits of their own meta-cognitive knowledge. The adult experimenter tells the child the following story (...) of object-transfer: “Maxi puts his chocolate into the green cupboard before going out to play. In his absence, his mother moves the chocolate from the green cupboard to the blue one.” The child must then predict where Maxi will pick up the chocolate when he returns. To the child, the question from an adult (a knowledgeable person) may seem surprising and can be understood as a question of his own knowledge of the world, rather than on Maxi's mental representations. In our study, without any modification of the initial task, we disambiguate the context of the question by (1) replacing the adult experimenter with a humanoid robot presented as “ignorant” and “slow” but trying to learn and (2) placing the child in the role of a “mentor” (the knowledgeable person). Sixty-two typical children of 3 years-old completed the first-order false belief task “Maxi and the chocolate,” either with a human or with a robot. Results revealed a significantly higher success rate in the robot condition than in the human condition. Thus, young children seem to fail because of the pragmatic difficulty of the first-order task, which causes a difference of interpretation between the young child and the experimenter. (shrink)

Nativists about theory of mind have typically explained why children below the age of four fail the false belief task by appealing to the demands that these tasks place on children’s developing executive abilities. However, this appeal to executive functioning cannot explain a wide range of evidence showing that social and linguistic factors also affect when children pass this task. In this paper, I present a revised nativist proposal about theory of mind development that is able to accommodate (...) these findings, which I call the pragmatic development account. According to this proposal, we can gain a better understanding of the shift in children’s performance on standard false-belief tasks around four years of age by considering how children’s experiences with the pragmatics of belief discourse affect the way they interpret the task. (shrink)

Naive physics beliefs can be systematically mistaken. They provide a useful test-bed because they are common, and also because their existence must rely on some adaptive advantage, within a given context. In the second part of the commentary we also ask questions about when a whole family of misbeliefs should be considered together as a single phenomenon.

In this paper I aim to establish that our belief in free will is epistemically innocent. Many contemporary accounts that deal with the potential “illusion” of freedom seek to describe the pragmatic benefits of belief in free will, such as how it facilitates or grounds our notions of moral responsibility or basic desert. While these proposals have their place (and use), I will not explicitly engage with them. I aim to establish that our false belief in (...) free will is an epistemically innocent belief. I will endeavour to show that if we carefully consider the circumstances in which particular beliefs (such as our belief in free will) are adopted, we can come to better appreciate not just their psychological but also their epistemic benefits. The implications, therefore, for future investigations into the philosophy of free will are that we should consider whether we have been too narrow in our pragmatic defences of free will, and that we should also be sensitive to epistemic considerations. (shrink)

Is there some general reason to expect organisms that have beliefs to have false beliefs? And after you observe that an organism occasionally occupies a given neural state that you think encodes a perceptual belief, how do you evaluate hypotheses about the semantic content that that state has, where some of those hypotheses attribute beliefs that are sometimes false while others attribute beliefs that are always true? To address the first of these questions, we discuss evolution by (...) natural selection and show how organisms that are risk-prone in the beliefs they form can be fitter than organisms that are risk-free. To address the second question, we discuss a problem that is widely recognized in statistics – the problem of over-fitting – and one influential device for addressing that problem, the Akaike Information Criterion (AIC). We then use AIC to solve epistemological versions of the disjunction and distality problems, which are two key problems concerning what it is for a belief state to have one semantic content rather than another. (shrink)

Jill de Villiers has argued that children's mastery of sentential complements plays a crucial role in enabling them to succeed at false-belief tasks. Josef Perner has disputed that and has argued that mastery of false-belief tasks requires an understanding of the multiplicity of perspectives. This paper attempts to resolve the debate by explicating attributions of desires and beliefs as extensions of the linguistic practices of making commands and assertions, respectively. In terms of these linguistic practices one (...) can explain why desire-talk will precede belief-talk and why even older children will have difficulty attributing incompatible desires. (shrink)

In their 1978 paper, psychologists David Premack and Guy Woodruff posed the question, “Does the chimpanzee have a theory of mind?” They treated this question as interchangeable with the inquiry, “Does a chimpanzee make inferences about another individual, in any degree or kind?” Here, we offer an alternative way of thinking about this issue, positing that while chimpanzees may not possess a theory of mind in the strict sense, we ought to think of them as enactive perceivers of practical and (...) social affordances. As such, we reframe the question: “Are chimpanzees socially enactive?”. (shrink)

In this paper I argue, based on a comparison of Spinoza's and Descartes‟s discussion of error, that beliefs are affirmations of the content of imagination that is not false in itself, only in relation to the object. This interpretation is an improvement both on the winning ideas reading and on the interpretation reading of beliefs. Contrary to the winning ideas reading it is able to explain belief revision concerning the same representation. Also, it does not need the assumption (...) that I misinterpret my otherwise correct ideas as the interpretation reading would have it. In the first section I will provide a brief overview of the notion of inherence and its role in Spinoza‟s discussion of the status of finite minds. Then by examining the relation between Spinoza‟s and Descartes‟ distinction of representations and attitudes, I show that affirmation can be identified with beliefs in Spinoza. Next, I will take a closer look at the identification of intellect and will and argue that Spinoza's identification of the two is based on the fact that Spinoza sees both as the active aspect of the mind. After that, I analyze Spinoza‟s comments on the different scopes of will and intellect, and argue that beliefs are affirmations of the imaginative content of the idea. Finally, through Spinoza‟s example of the utterance of mathematical error, I present my solution to the problem of inherence of false beliefs. (shrink)

In a paper published in Psychological Review, Tyler Burge has offered a unified non-mentalistic account of a wide range of social cognitive developmental findings. His proposal is that far from attributing mental states, young children attribute to humans the same kind of internal generic states of sensory registration that biologists attribute to e.g. snails and ticks. Burge’s proposal deserves close attention: it is especially challenging because it departs from both the mentalistic and all the non-mentalistic accounts of the data so (...) far. Moreover Burge has been one of the leading philosophers of mind of the past 40 years and some of his writings on the objectivity of perception display a deep understanding of the relevance of science for sharpening our understanding of the mind. After taking a close look at the developmental evidence, in particular at false-belief studies, I argue that Burge’s, 409–434, 2018) account faces severe obstacles. To give one telling example: if young children can only attribute to others sensory registrations, then it is hard to explain the evidence showing that they respond differently to an agent’s ignorance and to her false belief. (shrink)

Children's understanding of the human mind has been found to be related to many social and experiential factors such as interactions with peers (Astington & Jenkins, 1995), parental socioeconomic a...

A starting point for the sort of alethic epistemological approach that dominates both historical and contemporary western philosophy is that epistemic norms, standards, or ideals are to be characterized by appeal to some kind of substantively normative relationship between belief and truth. Accordingly, the alethic epistemologist maintains that false beliefs are necessarily defective, imperfect, or flawed, at least from the epistemic perspective. In this paper, I develop an action-oriented alternative to the alethic approach, an alternative that is inspired (...) by and jives with the kind of thinking that underwrites promising and increasingly popular enactive or embodied research programs in cognitive science. Moreover, I argue that the proponent of an action-oriented epistemological approach ought to deny that falsity, in and of itself, necessarily constitutes a kind of epistemic imperfection in belief. The action-oriented epistemologist ought to embrace the possibility that there are epistemically flawless false beliefs. (shrink)

Our interest is in the possibility of there being a philosophically interesting set of useful false beliefs where the utility in question is specifically epistemic. As we will see, it is hard to delineate plausible candidates in this regard, though several are promising at first blush. We begin with the kind of strictly false claims that are said to be often involved in good scientific practice, such as through the use of idealisations and fictions. The problem is that (...) it is difficult to see that there would be any epistemic utility in believing such claims, as opposed, say, to merely accepting them. Next we turn to the challenge posed by epistemic situationism, which when embedded within a plausible form of virtue epistemology appears to show that sometimes purely situational factors can play a significant explanatory role in one’s cognitive success. But again it is hard to see how the role that these epistemically beneficial situational factors contribute can be cashed out in terms of epistemically useful false beliefs on the part of the subject. Finally, we turn to the Wittgensteinian conception of hinge commitments, commitments that are held to be epistemically useful even if false. While the epistemic utility of these commitments is defended, it is argued that one cannot make sense of these commitments in terms of belief. Support is thus canvassed, albeit in a piecemeal fashion, for the thesis that the prospects for there being philosophically interesting cases of epistemically useful false belief are poor. (shrink)

I argue that both language acquisition and cultural and social factors contribute to the formation of schemata that facilitate false belief reasoning. While the proposal for an active role of language acquisition in this sense has been partially advanced by several voices in the mentalizing debate, I argue that other accounts addressing this issue present some shortcomings. Specifically, I analyze the existing proposals distinguishing between “structure-oriented” views :1858–1878, 2007; de Villiers in Why language matters for theory of mind. (...) Oxford University Press, New York, pp 186–219, 2005), that stress the role of language as a set of rules providing syntactic input and providing a representational format, and “cultural/social-oriented views”, that stress the role of social interaction. Starting from the analysis of these views, I defend my own account of the role of language acquisition in aiding false belief reasoning. I argue that language acquisition plays a pivotal role in the formation of schemata used by pre-schoolers to pass the false belief task. I propose a specific learning mechanism for exploiting linguistic information that taps into specific cognitive abilities, thus making a very concrete suggestion about the role of linguistic input in specific cultural contexts for the development of false belief skills. (shrink)

Richard Feldman and William Lycan have defended a view according to which a necessary condition for a doxastic agent to have knowledge is that the agent’s belief is not essentially based on any false assumptions. I call this the no-essential-false-assumption account, or NEFA. Peter Klein considers examples of what he calls “useful false beliefs” and alters his own account of knowledge in a way which can be seen as a refinement of NEFA. This paper shows that (...) NEFA, even given Klein’s refinement, is subject to counterexample: a doxastic agent may possess knowledge despite having an essential false assumption. Advocates of NEFA could simply reject the intuition that the example is a case of knowledge. However, if the example is interpreted as not being a case of knowledge, then it can be used as a potential counterexample against both safety and sensitivity views of knowledge. I also provide a further case which, I claim, is problematic for all of the accounts just mentioned. I then propose, briefly, an alternative account of knowledge which handles all these cases appropriately. (shrink)

In this paper we show how to formalise false-belief tasks like the Sally-Anne task and the second-order chocolate task in Dynamic Epistemic Logic. False-belief tasks are used to test the strength of the Theory of Mind of humans, that is, a human’s ability to attribute mental states to other agents. Having a ToM is known to be essential to human social intelligence, and hence likely to be essential to social intelligence of artificial agents as well. It (...) is therefore important to find ways of implementing a ToM in artificial agents, and to show that such agents can then solve false-belief tasks. In this paper, the approach is to use DEL as a formal framework for representing ToM, and use reasoning in DEL to solve false-belief tasks. In addition to formalising several false-belief tasks in DEL, the paper introduces some extensions of DEL itself: edge-conditioned event models and observability propositions. These extensions are introduced to provide better formalisations of the false-belief tasks, but expected to have independent future interest. (shrink)

Selon les épicuriens, toutes les impressions des sens sont vraies et la raison trouve en elles son fondement. Nombreux sont ceux, cependant, qui croient que les impressions des sens ne sont pas toutes vraies. Les épicuriens expliquent cette croyance de la façon suivante : la source de cette erreur est souvent la croyance que les impressions des sens peuvent se contredire. Mais cette dernière croyance résulte souvent de ce que les épicuriens tiennent pour notre tendance naturelle, et fréquemment utile, à (...) généraliser et à former des opinions par extrapolation à partir des impressions de nos sens. (shrink)