Platonism is the view that there exist such things as abstract objects — where an abstract object is an object that does not exist in space or time and which is therefore entirely non-physical and nonmental. Platonism in this sense is a contemporary view. It is obviously related to the views of Plato in important ways, but it is not entirely clear that Plato endorsed this view, as it is defined here. In order to remain neutral on this question, the (...) term ‘platonism’ is spelled with a lower-case ‘p’. (See entry on Plato.) The most important figure in the development of modern platonism is Gottlob Frege (1884, 1892, 1893-1903, 1919). The view has also been endorsed by many others, including Kurt Gödel (1964), Bertrand Russell (1912), and W.V.O. Quine (1948, 1951). (shrink)

On Crimmins and Perry’s account of propositional attitude ascription (1989), beliefs are concrete cognitive structures—particulars ("things in the head") that belong to an agent and that have a lifetime. They are related to the world and to other cognitive structures and abilities, allowing one to classify the latter by propositional content. Containing ideas and notions as constituents, beliefs are structured entities. The difference between notions and ideas is the difference between an agent’s ways of thinking about individuals vs. properties.

Followers of Wittgenstein allegedly once held that a meaningful claim to know that p could only be made if there was some doubt about the truth of p. The correct response to this thesis involved appealing to the distinction between the semantic content of a sentence and features attaching to its use. It is inappropriate to assert a knowledge-claim unless someone in the audience has doubt about what the speaker claims to know. But this fact has nothing to do with (...) the semantic content of knowledgeascriptions; it is entirely explicable by appeal to pragmatic facts about felicitous assertion. (shrink)

Epistemic modal predicate logic raises conceptual problems not faced in the case of alethic modal predicate logic : Frege’s “Hesperus-Phosphorus” problem—how to make sense of ascribing to agents ignorance of necessarily true identity statements—and the related “Hintikka-Kripke” problem—how to set up a logical system combining epistemic and alethic modalities, as well as others problems, such as Quine’s “Double Vision” problem and problems of self-knowledge. In this paper, we lay out a philosophical approach to epistemic predicate logic, implemented formally in Melvin (...) Fitting’s First-Order Intensional Logic, that we argue solves these and other conceptual problems. Topics covered include: Quine on the “collapse” of modal distinctions; the rigidity of names; belief reports and unarticulated constituents; epistemic roles; counterfactual attitudes; representational vs. interpretational semantics; ignorance of co-reference vs. ignorance of identity; two-dimensional epistemic models; quantification into epistemic contexts; and an approach to multi-agent epistemic logic based on centered worlds and hybrid logic. (shrink)

In this talk I present the main results from Anta (2021), namely, that the theoretical division between Boltzmannian and Gibbsian statistical mechanics should be understood as a separation in the epistemic capabilities of this physical discipline. In particular, while from the Boltzmannian framework one can generate powerful explanations of thermal processes by appealing to their microdynamics, from the Gibbsian framework one can predict observable values in a computationally effective way. Finally, I argue that this statistical mechanical schism contradicts the Hempelian (...) (1958) thesis that the predictive power of a scientific theory is directly proportional to its explanatory potential, and vice versa. (shrink)

Competing theories on the semantics of group pejorative terms (also known as‘slurs’)comprise both advocates and opponents to the Identity Thesis (IT), according to whichthese terms and their neutral counterparts do not differ in semantic value. In the oppo-nents’camp, Christopher Hom has offered an argument based on substitution of slurs andneutral counterparts that both supports his semanticist approach and cast doubts on all IT-based approaches to slurs. We aim to point to a dilemma triggered by this argument based on evidence showing (...) that substitution of some words (including but not restricted to slurs)for non-problematically co-referential pairs may fail to preserve truth-values in some linguistics contexts. (shrink)

In recent years, a number of new trends have seen light at the intersection of semantics and philosophy of language. They are meant to address puzzles raised by the context-sensitivity of a variety of natural language constructions, such as knowledge ascriptions, belief reports, epistemic modals, indicative conditionals, quantifier phrases, gradable adjectives, temporal constructions, vague predicates, moral predicates, predicates of personal taste. A diversity of labels have consequently emerged, such as 'contextualism', 'indexicalism', 'invariantism', 'literalism', 'minimalism', and 'relativism', variously qualified. The goal (...) of this essay is to pinpoint the issues that lie at the heart of the recent debates, clarify what is at stake, and provide a snapshot of the current theoretical landscape. (shrink)

This chapter presents a new semantics for inductive empirical knowledge. The epistemic agent is represented concretely as a learner who processes new inputs through time and who forms new beliefs from those inputs by means of a concrete, computable learning program. The agent’s belief state is represented hyper-intensionally as a set of time-indexed sentences. Knowledge is interpreted as avoidance of error in the limit and as having converged to true belief from the present time onward. Familiar topics are re-examined within (...) the semantics, such as inductive skepticism, the logic of discovery, Duhem’s problem, the articulation of theories by auxiliary hypotheses, the role of serendipity in scientific knowledge, Fitch’s paradox, deductive closure of knowability, whether one can know inductively that one knows inductively, whether one can know inductively that one does not know inductively, and whether expert instruction can spread common inductive knowledge—as opposed to mere, true belief—through a community of gullible pupils. (shrink)

The goal of inquiry in this essay is to ascertain to what extent the Principle of Compositionality – the thesis that the meaning of a complex expression is determined by the meaning of its parts and its mode of composition – can be justifiably imposed as a constraint on semantic theories, and thereby provide information about what meanings are. Apart from the introduction and the concluding chapter the thesis is divided into five chapters addressing different questions pertaining to the overarching (...) goal of inquiry. Chapter Two is an attempt to determine whether the Principle of Compositionality is a trivial principle. It is argued that this is not the case in the context of providing the semantics of natural languages since it is an open question whether the best theories that respect available syntactic and semantic data are compositional. Chapter Three and Chapter Four ask whether there are reasons to think that the Principle of Compositionality is true. It is argued that the three most commonly cited reasons for thinking that correct semantic theories must be compositional – Linguistic Creativity, Productivity and Systematicity – in fact only give us reasons to think that the meaning of complex expressions depend on the meanings of their parts and their modes of composition, but not that the meaning of complex expressions depend ONLY on those factors. Chapter Five asks whether there are any reasons to think that the Principle of Compositionality is false. It is argued that all the phenomena that have been suggested entail non-compositionality are in fact compatible with some versions of compositionality. Even if this conclusion is reached in this chapter, the conclusion of the previous two chapters entails that we are not justified in imposing the Principle of Compositionality as an adequacy constraint on Semantic theories. Chapter Six explores the ways in which information about what meanings are can be derived by imposing constraints on semantic theories. It is argued that the distinction emphasized in Chapter Three and Chapter Four between depending on and depending ONLY on is of critical importance. It is demonstrated that the informative potential of the Principle of Compositionality goes far beyond that of the principle we are in fact justified in imposing on semantic theories. So not only is it the case that we cannot learn anything about meanings from the justified imposition of the Principle of Compositionality – since we cannot justifiably impose it as a constraint on semantic theories – what we could have learned from it had we been justified in imposing it is very different from what we can learn from the principle that we are justified in imposing. (shrink)

Castañeda, Perry and Lewis argued in the 1960’s and 1970’s that thoughts about oneself “as oneself” – de se thoughts – require special treatment, and advanced different accounts. In this paper I discuss Ernest Sosa’s approach to these matters. I first present his approach to singular or de re thought in general in the first section. In the second, I introduce the data that need to be explained, Perry’s and Lewis’s proposals, and Sosa’s own account, in relation to Perry’s, Lewis’s, (...) and his own views on de re thought. In the third section I present the account I prefer – a “token-reflexive” version of Perry’s original account that Perry himself came to adopt in reaction to Stalnaker’s criticisms. In the final section I take up Recanati’s recent arguments, from a viewpoint on de se thought very similar to Sosa’s, to the effect that such an account is in a good position to explain the phenomenon of immunity to error through misidentification. I argue there that that is not the case, and I conclude by suggesting that the token-reflexive account fits better both with the data and with Sosa’s Fregean take on de re thought in general. (shrink)

n this paper I take up these proposals, giving reasons to incorporate semantic features associated with proper names over and above their referent in any (genuine) semantic account of natural language. I also argue that my proposal is compatible with the main points made in Naming and Necessity, by contending that not Millianism but externalism was the claim most forcefully argued for in that impressive piece of work.

In this paper, I explore Bach’s idea (Bach, 2000) that null appositives, intended as expanded qua-clauses, can resolve the puzzles of belief reports. These puzzles are crucial in understanding the semantics and pragmatics of belief reports and are presented in a section. I propose that Bach’s strategy is not only a way of dealing with puzzles, but also an ideal way of dealing with belief reports. I argue that even simple unproblematic cases of belief reports are cases of pragmatic intrusion, (...) involving null appositives, or to use the words of Bach, ‘qua-clauses’. The main difference between my pragmatic approach and the one by Salmon (1986) is that this author uses the notion of conversational implicature, whereas I use the notion of pragmatic intrusion and explicature. From my point of view, statements such as ‘‘John believes that Cicero is clever’’ and ‘‘John believes that Tully is clever’’ have got distinct truth-values. In other words, I claim that belief reports in the default case illuminate the hearer on the mental life of the believer, that includes specific modes of presentation of the referents talked about. Furthermore, while in the other pragmatic approaches, it is mysterious how a mode of presentation is assumed to be the main filter of the believer’s mental life, here I provide an explanatory account in terms of relevance, cognitive effects, and processing efforts. The most important part of the paper is devoted to showing that null appositives are required, in the case of belief reports, to explain certain anaphoric effects, which would otherwise be mysterious. My examples show that null appositives are not necessitated at logical form, but only at the level of the explicature, in line with the standard assumptions by Carston and Recanati on pragmatic intrusion. I develop a potentially useful analysis of belief reports by exploiting syntactic and semantic considerations on presuppositional clitics in Romance. (shrink)

This is one of a series of articles in which I examine errors that philosophers of language may be led to make if already prone to exaggerating the rôle compositional semantics can play in explaining how we communicate, whether by expressing propositions with our words or by merely implying them. In the present article, I am concerned less with “pragmatic contributions” to the propositions we express—contributions some philosophers seem rather desperate to deny the existence or ubiquity of—than I am with (...) certain types of traps that those who exaggerate the rôle of semantic convention and underestimate the rôle of pragmatic inference are apt to fall into. (shrink)

In a series of papers, Robin Jeshion has forcefully criticized both Donnellan's and Evans’ claims on the contingent a priori, and she has developed an “acquaintanceless” account of singular thoughts as an alternative view. Jeshion claims that one can fully grasp a singular thought expressed by a sentence including a proper name, even if its reference has been descriptively fixed and one’s access to the referent is “mediated” by that description. But she still wants to reject “semantic instrumentalism”, the view (...) that “there are no substantive conditions of any sort on having singular thought. We can freely generate singular thoughts at will by manipulating the apparatus of direct reference.” Her account of singular thoughts is a psychological one, rejecting any epistemic requirement. Having singular thoughts is for her a matter of deploying “mental files” or “dossiers” that play a significant role in the cognitive life of the individual. This paper elaborates on an alternative descriptivist-friendly view, which has important points of contact with Jeshion’s. It differs, particularly in that it is an epistemic view; it is only a broadly understood acquaintance view, as it will transpire, but this does not make it a mere terminological variation on Jeshion’s acquaintanceless one. To argue for it, the paper discusses some relevant aspects of the semantics of fictional discourse. (shrink)

Schifferś \'meaning-intention\' problem is aimed at \'hidden-indexical\' theories of belief ascription. Without defending such theories the author raises several questions about the assumptions behind Schifferś objection. Perhaps hidden-indexical theories don\'t tell us enough about how we can refer to modes of presentation, but Schifferś skepticism about our ability to know modes of presentation is unwarranted. The author sketches an account of the role of modes of presentation in ordinary psychological talk which is designed to answer Schifferś skeptical worries.

My aim is to motivate and develop a view of what senses are. Senses, as I conceive of them, avoid a number of the problems that plague a broadly Fregean approach to the semantics of belief ascriptions, as I hope to show. The chief innovation of my view that enables these solutions is that beliefs are taken to have multiple, truth-conditionally equivalent contents. In traditional Fregean terminology, a belief does not involve a relation to a single thought, but to many (...) thoughts, some of which are very fine-grained, and some of which are rather coarse-grained. Each thought is a structured entity ultimately composed of unstructured senses that themselves vary in their level of grain. It is no part of my attempted vindication of senses that senses are closely related to the meanings of words, phrases, and sentences; this feature of historical Fregeanism I disavow. I endorse rather the equally traditional claim that senses are concepts or, if truth-evaluable, the propositional contents of belief. (shrink)

In Reference and Reflexivity, John Perry tries to reconcile referentialism with a Fregean concern for cognitive significance. His trick is to supplement referential content with what he calls ‘‘reflexive’’ content. Actually, there are several levels of reflexive content, all to be distinguished from the ‘‘official,’’ referential content of an utterance. Perry is convinced by two arguments for referentialism, the ‘‘counterfactual truth-conditions’’ and the ‘‘same-saying’’ arguments, but he also acknowledges the force of two Fregean arguments against it, arguments that pose the (...) ‘‘coreference’’ and the ‘‘no-reference’’ problems. He sees these as genuine problems for referentialism and does not share Howard Wettstein’s (1986) view that semantics has ‘‘rested on a mistake,’’ the mistake of thinking that semantics is obliged to come to grips with ‘‘cognitive significance’’ and, in particular, to explain the fact that coreferring terms can differ in cognitive significance and that terms lacking in reference can still have cognitive significance. Perry points out that ‘‘there is nothing in [the arguments for referentialism] to show that the official content, rather than the reflexive content, is the key to understanding the cognitive motivation and impact of utterances’’ (Perry 2001, 193).1 In other words, ‘‘a theory of direct reference provides no argument for ignoring reflexive content, and, properly understood, has no motivation for searching for such an argument.’’ Thus Perry uses the notion of reflexive content to complement referentialism with a theory of cognitive significance. Frege drew a fundamental distinction between the reference of a term and the means by which its reference is determined. In his view, however, it is not the references themselves but the means by which they are determined that enter into propositions (‘‘Thoughts’’) expressed by sentences in which the terms occur. So we might call Frege an ‘indirect reference’ theorist. Echoing the introduction to Kaplan’s ‘‘Afterthoughts’’ (1989a), Perry stresses that ‘direct’, as it occurs in ‘direct reference’, does not imply that ‘‘the mechanism of reference is unmediated by the relation of fitting identifying conditions’’ (188). (shrink)

In language comprehension, 'you' is a de se pronoun, which means that its interpretation is guided by a simple de se rule ('you' = self-ascription by addressee), while the interpretation of other pronouns requires more complicated reasoning. This predicts that 'you' should be easier to process than 'I' or 'he', especially for children. But not all occurrences of 'you' can be correctly interpreted via self-ascription. We consider two cases where 'you' does not indicate self-ascription: interpretation as an eavesdropper and 'you' (...) in direct speech. In our experiment, we compare children’s interpretation of the pronouns 'I', 'you' and 'he', in both direct and indirect reported speech, and in both addressee and eavesdropping situations. We tested 71 five-year-olds, 63 nine-year-olds, and 52 adults in a referent-selection task and found a clear de se effect for children when directly addressed: they performed better with 'you' than with 'I'/'he' in indirect speech, but worse with 'you' than with 'I'/'he' in direct speech. We explain the latter finding in terms of the attraction of the de se interpretation strategy, which leads addressees to automatically self-ascribe 'you' even in a direct speech report. (shrink)