This paper explores an idea of Stoic descent that is largely neglected nowadays, the idea that an argument is valid when the conditional formed by the conjunction of its premises as antecedent and its conclusion as consequent is true. As it will be argued, once some basic features of our naıve understanding of validity are properly spelled out, and a suitable account of conditionals is adopted, the equivalence between valid arguments and true conditionals makes perfect sense. The account of validity (...) outlined here, which displays one coherent way to articulate the Stoic intuition, accords with standard formal treatments of deductive validity and encompasses an independently grounded characterization of inductive validity. (shrink)

Simondon adopts some concepts of social psychology as ‘in group’ and ‘out group’, namely from Kurt Lewin and Gordon Allport, that allow him to describe the fundamental processes shaping the domain of collective individuation, and to challenge Bergson’s distinction between a ‘closed’ community and an ‘open’ society. Reconstructing Simondon’s sources is necessary to understand how he tries to provide an analysis of the social system without presupposing a given anthropology, but rather exploring different perspectives on the human/nature threshold through the (...) concept of transindividual. In his study of the social system Simondon progressively gives conceptual shape to the processes he calls transindividual thanks to the ontogenetic analysis of the phenomena of belief, work and language. In all these domains, a ‘basic community’ emerges just over the threshold of the biological group, where the structural ambivalence of all collective processes as simultaneously closed and open becomes clear. That is why Simondon does not present the concept of the transindividual as a solution to the epistemological problem of psychic and collective individuation, but rather as the ‘field’ in which a whole series of social, biological and technical dimensions can be made converge towards a science of anthropogenic processes. (shrink)

Though researchers working on congenital aphantasia (henceforth “aphantasia”) agree that this condition involves an impairment in the ability to voluntarily generate visual imagery, disagreement looms large as to which other impairments are exhibited by aphantasic subjects. This article offers the first extensive review of studies on aphantasia, and proposes that aphantasic subjects exhibit a cluster of impairments. It puts forward a novel cognitive theory of aphantasia, building on the constructive episodic simulation hypothesis of memory and imagination. It argues that aphantasia (...) is best explained as a malfunction of processes in the episodic system, and is therefore an episodic system condition. (shrink)

Artificial intelligence (AI) systems are quickly gaining ground in healthcare and clinical decision-making. However, it is still unclear in what way AI can or should support decision-making that is based on incapacitated patients’ values and goals of care, which often requires input from clinicians and loved ones. Although the use of algorithms to predict patients’ most likely preferred treatment has been discussed in the medical ethics literature, no example has been realised in clinical practice. This is due, arguably, to the (...) lack of a structured approach to the epistemological, ethical and pragmatic challenges arising from the design and use of such algorithms. The present paper offers a new perspective on the problem by suggesting that preference predicting AIs be viewed as sociotechnical systems with distinctive life-cycles. We explore how both known and novel challenges map onto the different stages of development, highlighting interdisciplinary strategies for their resolution. (shrink)

This 1995 book takes as its starting point Plato's incorporation of specific genres of poetry and rhetoric into his dialogues. The author argues that Plato's 'dialogues' with traditional genres are part and parcel of his effort to define 'philosophy'. Before Plato, 'philosophy' designated 'intellectual cultivation' in the broadest sense. When Plato appropriated the term for his own intellectual project, he created a new and specialised discipline. In order to define and legitimise 'philosophy', Plato had to match it against genres of (...) discourse that had authority and currency in democratic Athens. By incorporating the text or discourse of another genre, Plato 'defines' his new brand of wisdom in opposition to traditional modes of thinking and speaking. By targeting individual genres of discourse Plato marks the boundaries of 'philosophy' as a discursive and as a social practice. (shrink)

– The paper defends a naturalistic version of modal actualism according to which what is metaphysically possible is determined by dispositions found in the actual world. We argue that there is just one world—this one—and that all genuine possibilities are anchored by the dispositions exemplified in this world. This is the case regardless of whether or not those dispositions are manifested. As long as the possibility is one that would obtain were the relevant disposition manifested, it is a genuine possibility. (...) Furthermore, by starting from actual dispositional properties and branching out, we are able to include possibilities that are quite far removed from any state of affairs that happens to obtain, while still providing a natural and actual grounding of possibility. Stressing the importance of ontological considerations in any theory of possibility, it is argued that the account of possibility in terms of dispositional properties provides a more palatable ontology than those of its competitors. Coming at it from the other direction, the dispositional account of possibility also provides motivation for taking an ontology of dispositions more seriously. As well as the relevant dispositional notions required to lay out the view, the paper discusses the dispositional realism needed as the basis for the account of possibility. (shrink)

.This paper discusses Aristotle’s thesis and Boethius’ thesis, the most distinctive theorems of connexive logic. Its aim is to show that, although there is something plausible in Aristotle’s thesis and Boethius’ thesis, the intuitions that may be invoked to motivate them are consistent with any account of indicative conditionals that validates a suitably restricted version of them. In particular, these intuitions are consistent with the view that indicative conditionals are adequately formalized as strict conditionals.

In his recent article ‘Limits of trust in medical AI,’ Hatherley argues that, if we believe that the motivations that are usually recognised as relevant for interpersonal trust have to be applied to interactions between humans and medical artificial intelligence, then these systems do not appear to be the appropriate objects of trust. In this response, we argue that it is possible to discuss trust in medical artificial intelligence (AI), if one refrains from simply assuming that trust describes human–human interactions. (...) To do so, we consider an account of trust that distinguishes trust from reliance in a way that is compatible with trusting non-human agents. In this account, to trust a medical AI is to rely on it with little monitoring and control of the elements that make it trustworthy. This attitude does not imply specific properties in the AI system that in fact only humans can have. This account of trust is applicable, in particular, to all cases where a physician relies on the medical AI predictions to support his or her decision making. (shrink)

Real engines of the artificial intelligence revolution, machine learning models, and algorithms are embedded nowadays in many services and products around us. As a society, we argue it is now necessary to transition into a phronetic paradigm focused on the ethical dilemmas stemming from the conception and application of AIs to define actionable recommendations as well as normative solutions. However, both academic research and society-driven initiatives are still quite far from clearly defining a solid program of study and intervention. In (...) this contribution, we will focus on selected ethical investigations around AI by proposing an incremental model of trust that can be applied to both human-human and human-AI interactions. Starting with a quick overview of the existing accounts of trust, with special attention to Taddeo’s concept of “e-trust,” we will discuss all the components of the proposed model and the reasons to trust in human-AI interactions in an example of relevance for business organizations. We end this contribution with an analysis of the epistemic and pragmatic reasons of trust in human-AI interactions and with a discussion of kinds of normativity in trustworthiness of AIs. (shrink)

She was intensely sympathetic. She was immensely charming. She excelled in the difficult arts of family life. She sacrificed herself daily. If there was chicken, she took the leg, if there was a draught, she sat in it—in short, she was so constituted that she never had a mind or wish of her own, but preferred to sympathise always with the minds and wishes of others. — Virginia Woolf (1979, 59).

The present essay provides a new metaphysical interpretation of Relational Quantum Mechanics (RQM) in terms of mereological bundle theory. The essential idea is to claim that a physical system in RQM can be defined as a mereological fusion of properties whose values may vary for different observers. Abandoning the Aristotelian tradition centered on the notion of substance, I claim that RQM embraces an ontology of properties that finds its roots in the heritage of David Hume. To this regard, defining what (...) kind of concrete physical objects populate the world according to RQM, I argue that this theoretical framework can be made compatible with (i) a property-oriented ontology, in which the notion of object can be easily defined, and (ii) moderate structural realism, a philosophical position where relations and relata are both fundamental. Finally, I conclude that under this reading relational quantum mechanics should be included among the full-fledged realist interpretations of quantum theory. (shrink)

Political theorists aiming to articulate normative standards for the EU have almost entirely focused on whether or not the EU suffers from a ‘democratic deficit'. Almost nothing has been written, by contrast, on one of the central values underpinning European integration since at least the European Coal and Steel Community (ECSC), namely solidarity. What kinds of principles, policies, and ideals should an affirmation of solidarity commit us to? Put another way: what norms of socioeconomic justice ought to apply to the (...) EU? This is not an empirical or narrowly legal question. We are not trying to gauge the degree of attachment there currently is in the EU by, for example, citing the latest Eurobarometer poll. We are also not attempting to state the implicit rationale followed by the Court of Justice in its recent ‘solidarity’ jurisprudence, let alone trying to fix what the Commission might mean by it. In this article, I ask the more fundamental question underlying both the legal and the empirical questions: What principles of social solidarity ought to apply between states and citizens of the emerging European polity? This question has rarely been asked or answered by political theorists in an EU context, so we are entering largely uncharted territory. The article develops a tripartite model of EU solidarity in Section 2, and then applies it to the case of free movement of persons in Section 3. (shrink)

In recent works, Kind has argued that imagination is a skill, since it possesses the two hallmarks of skill: improvability by practice, and control. I agree with Kind that and are indeed hallmarks of skill, and I also endorse her claim that imagination is a skill in virtue of possessing these two features. However, in this paper, I argue that Kind’s case for imagination’s being a skill is unsatisfactory, since it lacks robust empirical evidence. Here, I will provide evidence for (...) by considering data from mental rotation experiments and for by considering data from developmental experiments. I conclude that imagination is a skill, but there is a further pressing question of how the cognitive architecture of imagination has to be structured to make this possible. I begin by considering how can be implemented sub-personally. I argue that this can be accounted for by positing a selection mechanism which selects content from memory representations to be recombined into imaginings, using Bayesian generation. I then show that such an account can also explain. On this basis, I hold that not only is imagination a skill, but that it is also plausibly implemented sub-personally by a Bayesian selection mechanism. (shrink)

There are essentially two ways to develop the Peircean idea that future contingents are all false. One is to provide a quantificational semantics for "will," as is usually done. The other is to define a quantificational postsemantics based on a linear semantics for "will." As we will suggest, the second option, although less conventional, is more plausible than the first in some crucial respects. The postsemantic approach overcomes three major troubles that have been raised in connection with Peirceanism: the apparent (...) scopelessness of "will" with respect to negation, the failure of Future Excluded Middle, and the so-called zero credence problem. (shrink)

The high predictive accuracy of contemporary machine learning-based AI systems has led some scholars to argue that, in certain cases, we should grant them epistemic expertise and authority over humans. This approach suggests that humans would have the epistemic obligation of relying on the predictions of a highly accurate AI system. Contrary to this view, in this work we claim that it is not possible to endow AI systems with a genuine account of epistemic expertise. In fact, relying on accounts (...) of expertise and authority from virtue epistemology, we show that epistemic expertise requires a relation with understanding that AI systems do not satisfy and intellectual abilities that these systems do not manifest. Further, following the Distribution Cognition theory and adapting an account by Croce on the virtues of collective epistemic agents to the case of human-AI interactions we show that, if an AI system is successfully appropriated by a human agent, a _hybrid_ epistemic agent emerges, which can become both an epistemic expert and an authority. Consequently, we claim that the aforementioned hybrid agent is the appropriate object of a discourse around trust in AI and the epistemic obligations that stem from its epistemic superiority. (shrink)

This paper addresses the question whether future contingents are knowable, that is, whether one can know that things will go a certain way even though it is possible that things will not go that way. First I will consider a long-established view that implies a negative answer, and draw attention to some endemic problems that affect its credibility. Then I will sketch an alternative line of thought that prompts a positive answer: future contingents are knowable, although our epistemic access of (...) them is limited in some important respects. (shrink)

This English translation of the author's original work has been thoroughly revised, expanded and updated. The book covers logical systems known as type-free or self-referential . These traditionally arise from any discussion on logical and semantical paradoxes. This particular volume, however, is not concerned with paradoxes but with the investigation of type-free sytems to show that: (i) there are rich theories of self-application, involving both operations and truth which can serve as foundations for property theory and formal semantics; (ii) these (...) theories provide a new outlook on classical topics, such as inductive definitions and predicative mathematics; (iii) they are particularly promising with regard to applications. Research arising from paradoxes has moved progressively closer to the mainstream of mathematical logic and has become much more prominent in the last twenty years. A number of significant developments, techniques and results have been discovered. Academics, students and researchers will find that the book contains a thorough overview of all relevant research in this field. (shrink)

According to Relational Quantum Mechanics the wave function \ is considered neither a concrete physical item evolving in spacetime, nor an object representing the absolute state of a certain quantum system. In this interpretative framework, \ is defined as a computational device encoding observers’ information; hence, RQM offers a somewhat epistemic view of the wave function. This perspective seems to be at odds with the PBR theorem, a formal result excluding that wave functions represent knowledge of an underlying reality described (...) by some ontic state. In this paper we argue that RQM is not affected by the conclusions of PBR’s argument; consequently, the alleged inconsistency can be dissolved. To do that, we will thoroughly discuss the very foundations of the PBR theorem, i.e. Harrigan and Spekkens’ categorization of ontological models, showing that their implicit assumptions about the nature of the ontic state are incompatible with the main tenets of RQM. Then, we will ask whether it is possible to derive a relational PBR-type result, answering in the negative. This conclusion shows some limitations of this theorem not yet discussed in the literature. (shrink)

Issues of measure and measurement, and their relation to value and values, are of concern in several major threads in contemporary social theory and social research. In this article, the notion of ‘measure–value environments’ is introduced as a theoretical lens through which the life of measures can be better understood. A number of points are made which represent both a continuation and a slight change in emphasis vis-à-vis the existing scholarship. First, it is argued that the relation between measure and (...) value is necessarily circular – better, entangled. Second, a conceptualization of measures as territorializing devices is advanced. Third, importance is given to the fact that measures are not simply tools in our hands, they are also environments in which we live. Fourth, attention is drawn to the fact that the unit ( n = 1) is not just a quantitative happening among others, but is qualitatively distinct. (shrink)

According to alethic pluralism, there is more than one way of being true: truth is not unique, in that there is a plurality of truth properties, each of which pertains to a specific domain of discourse. This paper shows how such a plurality can be represented in a coherent formal framework by means of a Kripke-style construction that yields intuitively correct extensions for distinct truth predicates. The theory of truth we develop can handle at least three crucial problems that have (...) been raised in connection with alethic pluralism: mixed compounds, mixed inferences, and semantic paradoxes. (shrink)

This paper employs some outcomes (for the most part due to David Lewis) of the contemporary debate on the metaphysics of dispositions to evaluate those dispositional analyses of meaning that make use of the concept of a disposition in ideal conditions. The first section of the paper explains why one may find appealing the notion of an ideal-condition dispositional analysis of meaning and argues that Saul Kripke’s well-known argument against such analyses is wanting. The second section focuses on Lewis’ work (...) in the metaphysics of dispositions in order to call attention to some intuitions about the nature of dispositions that we all seem to share. In particular, I stress the role of what I call "Actuality Constraint". The third section of the paper maintains that the Actuality Constraint can be used to show that the dispositions with which ideal-condition dispositional analyses identify my meaning addition by "+" do not exist (in so doing, I develop a suggestion put forward by Paul Boghossian). This immediately implies that ideal-condition dispositional analyses of meaning cannot work. The last section discusses a possible objection to my argument. The point of the objection is that the argument depends on an illicit assumption. I show (1) that, in fact, the assumption in question is far from illicit and (2) that even without this assumption it is possible to argue that the dispositions with which ideal-condition dispositional analyses identify my meaning addition by "+" do not exist. (shrink)

El propósito de este artículo es proporcionar algunas pistas sobre el problema de la naturaleza en la filosofía de Heidegger y mostrar por qué su manera de abordar la naturaleza resulta problemática. Problemática, puesto que, al estar obsesionado por evitar elaboraciones naturalistas de los fenómenos que le conciernen, Heidegger solo se centra en una aproximación existencial a la naturaleza y pone el foco en la forma en que esta se hace manifiesta al Dasein. Esto no le permite elaborar una reflexión (...) filosófica sobre la naturaleza consistente con las ciencias de su época (salvo en algunas contadas ocasiones) y le impide dar un peso suficiente en su obra a la naturaleza. -/- . (shrink)

First published in 1990. Routledge is an imprint of Taylor & Francis, an informa company.

In order to accommodate for the present shortage of oocyte donors, oocyte-donation programs place ads in college newspapers and provide large monetary compensation to encourage participation. Large compensation acts as a strong incentive for young women to undergo the potentially risky procedure of donation. In this enticing situation, it is particularly important for programs to fully inform prospective donors of the risks of the procedure so that they can accurately weigh the costs and benefits of donating. However, because oocyte-donor programs (...) must alleviate the shortage of donors if they wish to maintain a financially viable business, there is reason to fear that they may minimize or misrepresent risks when recruiting egg donors. In this pilot study, the risk information provided by programs (n=19) to prospective oocyte donors in a preliminary phone call inquiry was investigated. The majority of the programs provided incomplete and/or inaccurate risk information. Policy changes are recommended to reduce the potential for undue influence and to standardize and regulate the risk information provided to prospective egg donors. (shrink)

ArgumentThis paper argues that Samuel Clarke's account of agent causation (i) provides a philosophical basis for moderate voluntarism, and (ii) both leads to and benefits from the acceptance of partial occasionalism as a model of causation for material beings. Clarke's account of agent causation entails that for an agent to be properly called an agent (i.e. causally efficacious), it is essential that the agent is free to choose whether to act or not. This freedom is compatible with the existence of (...) conceptually necessary connections. Hence, Clarke can harmonize God's freedom of choosing with the existence of eternal and necessary relations among things. Moreover, in Clarke's account, only intelligent entities can be properly understood as efficacious causes. Beings deprived of intelligence are not agents or efficacious causes at all and their effects are thus the result of the immediate action of some intelligent being operating upon them. (shrink)

ABSTRACT Carl Schmitt is generally considered as the father of exceptionalism – the theory that the heart of politics lies in the sovereign power to issue emergency measures that suspend everyday normality. This is why his name comes up anytime state governments, whether liberal or not, impose limits on constitutional rights and freedoms to cope with emergencies. This article problematises such a received understanding. It argues that Schmitt held an exceptionalist view for a limited period of time and that even (...) in that period his thinking cannot be regarded as unshakably exceptionalist. This interpretation offers a new entry point to Schmitt’s overall theory. While it can hardly be defended from allegations of reactionary conservatism, it remains a juristic theory of the legal order that tries to answer the question of what ensures the stability of social life. The backdrop of this view is an institutional theory of law and politics that is hardly reconcilable with any form of exceptionalism. In this light, the core of Schmitt’s thinking turns out to be the exaltation of legal science as a jurisgenerative practice that shelters a community’s institutional practices and the traditional identity. (shrink)

This paper argues that most of the alleged straight solutions to the sceptical paradox which Kripke ascribed to Wittgenstein can be regarded as the first horn of a dilemma whose second horn is the paradox itself. The dilemma is proved to be a by‐product of a foundationalist assumption on the notion of justification, as applied to linguistic behaviour. It is maintained that the assumption is unnecessary and that the dilemma is therefore spurious. To this end, an alternative conception of the (...) justification of linguistic behaviour is outlined, a conception that vindicates some of the insights behind Kripke's Wittgenstein's sceptical solution of the paradox. This alternative conception is defended against two objections (both familiar from McDowell's works): (1) that it would imply that for the linguistic community there is no authority, no standard to meet and, therefore, no possibility of error and (2) that it would lead to a kind of idealism. (shrink)

Eating local food has become a mainstream proxy for virtue and a reliable model of sustainable dieting. It suffers, nonetheless, from genuine criticisms and limitations. In this paper, we suggest theoretical amendments to reorient the local food movement and turn eating local into a robust concept—comprehensive, coherent, and inclusive, affording a firm grip over structural aspects of the food chain. We develop our argument in three parts. The first contends that ‘local’ can be said of lots of entities (e.g. whole (...) or multi-ingredient foods, recipes, menus) and that its meaning varies depending on which entities are under consideration. The second examines three dimensions of being local: the distance from the place of production; the geographical origins; the social links to consumers and producers. The third presents our robust conception of eating local, grounded on a more realistic model that accommodates for heterogeneous and complex actors. (shrink)

Gestures are usually regarded as a casual element of communication processes between logicians. By contrast, we aim to show that gestures have played a significant role in logic. We argue that the development of communication techniques and their standardization have led to the rise of formal notation systems commonly used in logic today. In order to substantiate this claim, the historical development of the use of gestures in (early) modern logic is investigated. This investigation uncovers exemplary communication and proof techniques (...) that illustrate the efficacy of gestures as representational media in formal logic. Revisiting the tradition of gestures in logic offers promising paths and insights for today’s logic as a communication practice in the digital age. (shrink)

According to simulation or shared-substrates models of emotion recognition, our ability to recognize the emotions expressed by other individuals relies, at least in part, on processes that internally simulate the same emotional state in ourselves. The term “emotional expressions” is nearly synonymous, in many people's minds, with facial expressions of emotion. However, vocal prosody and whole-body cues also convey emotional information. What is the relationship between these various channels of emotional communication? We first briefly review simulation models of emotion recognition, (...) and then discuss neuroscientific evidence related to these models, including studies using facial expressions, whole-body cues, and vocal prosody. We conclude by discussing these data in the context of simulation and shared-substrates models of emotion recognition. (shrink)

This paper argues that Spinoza's notions of “conatus” and “power of acting” are derived by means of generalization from the notions of “force of motion” and “force of determination” that Spinoza discussed in his Principles of Cartesian Philosophy to account for interactions among bodies on the basis of their degrees of contrariety. I argue that in the Ethics, Spinoza's ontology entails that interactions must always be accounted for in terms of degrees of “agreement or disagreement in nature” among interacting things. (...) The notion of “power of acting” is used to express the extent to which a thing's conatus is aided or restrained by external causes on the basis of its degree of agreement or disagreement in nature with them. “Power of acting” generalizes the same approach and method of resolution at the basis of the notion of “force of determination” in order to account for causal interactions not only among the simplest bodies but also among more complex individuals. (shrink)

We address an open problem in the philosophy of artificial intelligence (AI): how to justify the epistemic attitudes we have towards the trustworthiness of AI systems. The problem is important, as providing reasons to believe that AI systems are worthy of trust is key to appropriately rely on these systems in human-AI interactions. In our approach, we consider the trustworthiness of an AI as a time-relative, composite property of the system with two distinct facets. One is the actual trustworthiness of (...) the AI and the other is the perceived trustworthiness of the system as assessed by its users while interacting with it. We show that credences, namely, beliefs we hold with a degree of confidence, are the appropriate attitude for capturing the facets of the trustworthiness of an AI over time. Then, we introduce a reliabilistic account providing justification to the credences in the trustworthiness of AI, which we derive from Tang’s probabilistic theory of justified credence. Our account stipulates that a credence in the trustworthiness of an AI system is justified if and only if it is caused by an assessment process that tends to result in a high proportion of credences for which the actual and perceived trustworthiness of the AI are calibrated. This approach informs research on the ethics of AI and human-AI interactions by providing actionable recommendations on how to measure the reliability of the process through which users perceive the trustworthiness of the system, investigating its calibration to the actual levels of trustworthiness of the AI as well as users’ appropriate reliance on the system. (shrink)

Hospital ethics committees (HECs) and ethicists generally describe themselves as engaged in four domains of practice: case consultation, research, education, and policy work. Despite the increasing attention to quality indicators, practice standards, and evaluation methods for the other domains, comparatively little is known or published about the policy work of HECs or ethicists. This article attempts to open the ?black box? of this health care ethics practice by providing two detailed case examples of ethics policy reviews. We also describe the (...) development and application of an evaluation strategy to assess the quality of ethics policy review work, and to enable continuous improvement of ethics policy review processes. Given the potential for policy work to impact entire patient populations and organizational systems, it is imperative that HECs and ethicists develop clearer roles, responsibilities, procedural standards, and evaluation methods to ensure the delivery of consistent, relevant, and high-quality ethics policy reviews. (shrink)

In this article, I provide a historical and bibliographical exploration of the handwritten, dictated commentaries (dictata) of Johannes de Raey (1620/1622–1702) on the texts of René Descartes (1596–1650), shedding light on their structure, development, and on their relations with the academic commentaries of Johannes Clauberg (1622–1665) and Christoph Wittich (1625–1687). The study of these commentaries, which are extant as class notes, is important because they conveyed one of the first systematic teachings of Descartes’s ideas and constituted a vehicle for their (...) further dissemination across northern Europe. (shrink)

This re-examination of the cogito is prompted by a substantive question which has not previously been identified: the distinguishability of the I or self. Consequently, its force has not been addre...

Anecdotal evidence has long lamented the status of social studies in elementary classrooms as observed by preservice teachers. As standardized testing has risen for mathematics and language arts, social studies has been pushed aside. In the aftermath of accountability legislation such as No Child Left Behind, research indicates that social studies is less visible in elementary classrooms due to an instructional focus on tested content areas (e.g. math, language arts, reading). In this study, approximately 90 elementary preservice teachers enrolled in (...) a social studies methods course responded to a survey and indicated the frequency and quality of lessons they observed over the course of a single semester. Findings report that preservice elementary teachers witnessed few, if any, lessons in social studies in the elementary classroom. Implications for teacher education are discussed. (shrink)

According to a view called 'nihilism', sentences containing vague expressions cannot strictly speaking be true or false, because they lack definite truth conditions. While most theorists of vagueness tend to regard nihilism as a hopeless view, a few isolated attempts have been made to defend it. This paper aims to develop such attempts in a new direction by showing how nihilism, once properly spelled out, can meet three crucial explanatory challenges that respectively concern truth, assertibility, and communication.

In this paper, I focus on the alleged distinction between speaker’s reference and semantic reference. I begin by discussing Saul Kripke’s notion of speaker’s reference and the theoretical roles it is supposed to play, arguing that they do not justify the claim that reference comes in two different sorts and highlighting that Kripke’s own definition makes the notion incompatible with the nowadays widely endorsed Gricean project, which aims at explaining semantic reference in terms of speaker’s reference. I then examine an (...) alternative account of speaker’s reference offered by Michael Devitt within his causal theory and express some doubts about its suitability for explaining proper name semantic reference. From all this, I conclude that there is at least some tension between Kripke’s chain of communication picture and the attempt to explain (Griceanly, so to say) semantic properties in terms of speakers’ mental states. (shrink)