Tenses as operators on content: ‘PAST’ and ‘FUT’ are circumstance shifters, similar What I hope to do in this talk: to ‘ ’ and ‘◊’, except that they shift the time of the circumstance, as opposed to the My intention is not to prove Kaplan wrong. Even if Kaplan’s remarks about context shifting operators in English turn out to be strictly correct, there is clearly a lot of world of the circumstance.

Indexicals are linguistic expressions whose reference shifts from context to context: some paradigm examples are ‘I’, ‘here’, ‘now’, ‘today’,‘he’, ‘she’, and ‘that’. Two speakers who utter a single sentence that contains an indexical may say different things. For instance, Fred and Wilma say different things when they utter the sentence ‘I am female’. Many philosophers (following David Kaplan 1989a) hold that indexicals have two sorts of meaning. The first sort of meaning is often called ‘character’ or ‘linguistic meaning’; the second (...) sort is often called ‘content’. Using this terminology, we can say that the word ‘I’ has a single character (or linguistic meaning), but has different contents in different contexts. (shrink)

In this paper, I present a new semantics for demonstratives. Now some may think that David Kaplan (1989a,b) has already given a more than satisfactory semantics for demonstratives, and that there is no need for a new one. But I argue below that Kaplan's theory fails to describe the linguistic meanings of 'that' and other true demonstratives. My argument for this conclusion has nothing to do with cognitive value, belief sentences, or other such contentious matters in semantics and the philosophy (...) of mind. Rather, it appeals to the obvious fact that there can be true utterances of certain sentences containing several occurrences of the same demonstrative (for instance, 'That is taller than that'). My argument can be answered by making a fairly modest revision in Kaplan's theory. But I believe that the resulting revised version of Kaplan's theory ignores or distorts various important semantic features of 'that'. Thus I ultimately argue in favor of a more substantial departure from Kaplan's theory. Perhaps the most remarkable feature of the theory I favor is that it ascribes three distinct sorts of meanings to demonstratives. (shrink)

But I am troubled by Kaplan's attempts to describe character. For one thing, Kaplan is not consistent in his mathematical representation of character. In some places, he represents character with one sort of function; in other places, he uses another sort of function. I show this in section one below, and argue that one of these representations is clearly better than the other. But I believe that even the better of these two representations is inadequate for capturing the kind of (...) meaning that Kaplan calls 'character'. In section two, I argue that no extensional function can do the job adequately. (shrink)

Thanks to David Kaplan (1989a, 1989b), we all know how to handle indexicals like ‘I’. ‘I’ doesn’t refer to an object simpliciter; rather, it refers to an object only relative to a context. In particular, relative to a context C, ‘I’ refers to the agent of C. Since different contexts can have different agents, ‘I’ can refer to different objects relative to different contexts. For example, relative to a context cwhose agent is Gottlob Frege, ‘I’ refers to Frege; relative to (...) a context 0* whose agent is Alexius.. (shrink)

Whilst it may seem strange to ask to whom I refers, we show that there are occasionswhen it is not always obvious. In demonstratingthis we challenge Kaplan''s assumptionthat the utterer, agent and referent of I arealways the same person.We begin by presenting what weregard to be the received view about indexicalreference popularized by David Kaplan in hisinfluential 1972 Demonstratives before goingon, in section 2, to discuss Sidelle''sanswering machine paradox which may be thoughtto threaten this view, and his deferredutterance method of (...) resolving this puzzle. Insection 3 we introduce a novel version of theanswering machine paradox which suggests that,in certain cases, Kaplan''s identification ofutterer, agent and referent of I breaks down.In the fourth section we go on to consider arecent revision of Kaplan''s picture by Predelliwhich appeals to the intentions of the utterer,before arguing that this picture is committedto unacceptable consequences and, therefore,should be avoided if possible. Finally, insection 5, we present a new revision ofKaplan''s account which retains much of thespirit of his original proposal whilst offeringa intuitively acceptable way to explain all ofthe apparently problematic data. In doing so,we also show how this picture is able toexplain the scenario which motivated Predelli''saccount without appealing to speakerintentions. (shrink)

Since Kaplan’s "Demonstratives", it has become a common-place to distinguish between the character and content of an expression, where the content of an expression is what it contributes to "what is said" by sentences containing that expression, and the character gives a rule for determining, in a context, the content of an expression. A tacit assumption of theories of character has been that character is autonomous from content – that semantic evaluation starts with character, adds context, and then derives content. (...) One consequence of this autonomy thesis is that the rules for character can contain no variables bound by content-level operators elsewhere in the sentence. Tacit appeal to this consequence features essentially both in Jason Stanley’s recent argument that all contextual ambiguity must be linked to "elements in the actual syntactic structure of the sentence uttered" in his "Context and Logical Form" and in my arguments against character-based theories of complex demonstratives in my "Complex Demonstratives". However, I argue here that the autonomy thesis is unmotivated, and show that we can separate Kaplan’s notion of character into two independent components: an aspect of meaning which is context-sensitive, and an aspect of meaning that is exempted from scopal interactions with other operators. The resulting semantic framework allows constructions similar to Kaplan’s rejected notion of "monsters begat by elegance", but which are both more empirically adequate and more theoretically versatile. Having made the distinction between context-sensitivity and autonomy from scopal interaction, I show how it allows binding into the character of expressions and hence undermines the immediate success of both Stanley’s argument and my former argument against character-based theories of complex demonstratives, and discuss briefly the prospects for reinstating modified versions of those arguments. Finally, I show how that same distinction allows a defusing of Kripke’s modal argument against a descriptive theory of names. Once autonomy from semantic interaction is separated from context-sensitivity, the first of those two alone can be used to capture the modal rigidity of proper names.. (shrink)

Jason Stanley has criticized a contextualist solution to the sorites paradox that treats vagueness as a kind of indexicality. His objection rests on a feature of indexicals that seems plausible: that their reference remains fixed in verb phrase ellipsis. But the force of Stanley’s criticism depends on the undefended assumption that vague terms, if they are a special sort of indexical, must function in the same way that more paradigmatic indexicals do. This paper argues that there can be more than (...) one sort of indexicality, that one term might easily have both sorts, and that therefore, and despite Stanley’s worries, vagueness might easily be assimilated to one form. (shrink)

Kaplan says that monsters violate Principle 2 of his theory. Principle 2 is that indexicals, pure and demonstrative alike, are directly referential. In providing this explanation of there being no monsters, Kaplan feels his theory has an advantage over double-indexing theories like Kamp’s or Segerberg’s (or Stalnaker’s), which either embrace monsters or avoid them only by ad hoc stipulation, in the sharp conceptual distinction it draws between circumstances of evaluation and contexts of utterance. We shall argue that Kaplan’s prohibition is (...) also essentially stipulative, and that it is too general. The main difference between ourselves and Kaplan is that the basic carriers of a truth-value is a sentence-in-a-context; our account is utterance-based. (shrink)

Mixed quotation exhibits characteristics of both mention and use. Some even go so far as to claim it can be described wholly in terms of the pragmatics of language use. Thus, it may be argued that the observed shifting of indexicals under all quotation shows that a monstrous operator is involved. I will argue the opposite: a proper semantic account of quotation can be used to exorcize Schlenker's monsters from semantic theory.

This paper argues in favor of a treatment of discourse about fiction in terms of operators on character, that is, Kaplanesque ‘monsters’. The first three sections criticize the traditional analysis of ‘according to the fiction’ as an intensional operator, and the approach to fictional discourse grounded on the notion of contextual shifts. The final sections explain how an analysis in terms of monsters yields the correct readings for a variety of examples involving modal and temporal indexicals.

In the tradition of Stalnaker (1978, 2002), context can be regarded as a set of assumptions that are mutually shared by a group of epistemic agents. An obvious generalization of this view is to explicitly represent each agent’s assumptions in a given situation and update them accordingly when new information is accepted. I lay out a number of philosophical and linguistic requirements for using such a model in order to describe communication of ideally-rational agents. In particular, the following questions are (...) addressed: 1.) What is the logical status of assumptions as opposed to rational KD45 belief, how are these assumptions generated from an underlying belief base in a given interpretation situation, and how are assumptions revised/contracted? 2.) What kind of ideal reasoning processes underly the interpretation of ‘incomplete’ content that may for example be obtained by an agent from an utterance by deriving some literal meaning from the lexicon and a grammar? Regarding the first set of questions, my proposal is to consider assumptions akin to rational belief, but not stronger than modal logic KD, since positive and negative introspection do not seem to hold for them. Given that, an obvious question is what the relation between beliefs and assumptions is. One possible answer is to generate an agent’s assumptions from an agent’s beliefs in a given interpretation situation by revising his beliefs with his beliefs about what the message sender believes in that situation. If such an account is based on AGM belief revision/contraction (Alchourrón 1985, Gärdenfors 1989) there is a number of well-known problems that need to be addressed, because revision of iterated belief modalities is required in this case. These problems have already been investigated in detail in recent works on DDL (Leitgeb/Segerberg 2007) and DEL (see e.g. Ditmarsch et. al. 2008). Another strategy would be to maintain and revise assumptions independently of the beliefs of an agent. I will briefly discuss the advantages and disadvantages of each of these views. In both views, assumptions constitute the subjective context in which an agent interprets an utterance and encounters the world. The result of an interpretation is in turn checked against the agent’s original beliefs, and if the checking operation succeeds the agent revises his beliefs by the result in the normal way described by the AGM paradigm. The second of the above questions needs to be addressed on the basis of concrete examples. Considering utterance like ‘David is ready’ or ‘John is tall’ that from a contextualist viewpoint express semantically incomplete content in the sense of Bach (2005, 2007), how may an agent arrive at interpretations of these utterances that are more complete? A first step is to presume that missing semantic ingredients are represented by missing argument places, which is a problematic assumption as it introduces a dependence on the semantic representation language. Given that, a default interpretation can be obtained by existentially quantifying over the missing argument and interpretation can then be regarded as an inference process. In case of the two examples mentioned, the assumptions of the agent allow him to obtain more specific readings by instantiating a value for the existentially bound variable. As I will show, this inference can be relatively straightforward in some cases like ‘John is tall’, whereas it requires complicated encyclopedic background knowledge and a number of default reasoning steps in other cases. Based on more examples of this kind, I argue that first, belief revision with iterated modalities in a multi-agent setting is needed to generate an agent’s assumptions as laid out above. Second, default reasoning is needed. Third, a qualitative or quantitative representation of uncertainty (‘degrees of belief’) is needed in order to obtain a useful model of the checking step, since fortunately not everybody believes everything that other people say. These requirements put the theory of interpretation based on assumptions in the frontline of ongoing research on the implementation of belief revision and update in dynamic logics. Such a theory might also be useful for contextualist accounts of strong knowledge, as it can be argued convincingly that when a knowledge ascription appears to be context-sensitive, this is so because the embedded proposition is context-sensitive and not because knowledge itself is context-sensitive. Hence,the context-sensitivity of embedded propositions in knowledge claims and how different agents in the same situation arrive at different assessments about them may be explained by an inferential theory of interpretation similar to the one outlined here but with another underlying concept of assumptions. Literature Alchourrón, C. E.; Gärdenfors, P. & Makinson, D. (1985), 'On the logic of theory change: partial meet contraction and revision functions', Journal of Symbolic Logic(50), 510-530. Bach, K. (2007), 'Minimalism for Dummies: Reply to Cappelen and Lepore', Technical report, University of San Fransisco, Department of Philosophy. Bach, K. (2005), Context ex Machina, in án Gendler Szabó, ed.,'Semantics versus Pragmatics', Oxford UP, Oxford, pp. 16-44. Ditmarsch, H. v.; Hoek, W. v. d. & Kooi, B. (2008), Dynamic Epistemic Logic, Kluwer. Gärdenfors, P. (1988), Knowledge in Flux, MIT Press. Leitgeb, H. & Segerberg, K. (2007), 'Dynamic doxastic logic: why, how, and where to?', Synthese155(2), 167-190. Stalnaker, R. (1978), Assertion, in . Cole, ed.,'Pragmatics', Academic Press, New York, pp. 315-332. Stalnaker, R. (2002), 'Common Ground', Linguistics and Philosophy25(5-6), 701--721. (shrink)

Reference and indexicality are two central topics in the Philosophy of Language that are closely tied together. In the first part of this book, a description theory of reference is developed and contrasted with the prevailing direct reference view with the goal of laying out their advantages and disadvantages. The author defends his version of indirect reference against well-known objections raised by Kripke in Naming and Necessity and his successors, and also addresses linguistic aspects like compositionality. In the second part, (...) a detailed survey on indexical expressions is given based on a variety of typological data. Topics addressed are, among others: Kaplan's logic of demonstratives, conversational versus utterance context, context-shifting indexicals, the deictic center, token-reflexivity, vagueness of spatial and temporal indexicals, reference rules, and the epistemic and cognitive role of indexicals. From a descriptivist perspective on reference, various examples of simple and complex indexicals are analyzed in first-order predicate logic with reified contexts. A critical discussion of essential indexicality, de se readings of attitudes and accompanying puzzles rounds up the investigation. (shrink)

It has traditionally been maintained that every token of ‘I’ refers to its utterer. However, certain uses of indexicals conflict with this claim, and its counterparts with respect to ‘here’ and ‘now’, suggesting that the traditional account of indexical reference should be abandoned. In this paper, I examine some proposed alternatives and the difficulties they face, before offering a new account of indexical reference. I endorse Kaplan’s view that the reference of an indexical is determined on any occasion it is (...) used by applying its character to a particular context, arguing that the problem cases show that this is not always the context of utterance. The task facing the semantic theorist is thus to explain what fixes the reference-determining context. I consider and reject both Predelli’s suggestion that the reference-determining context is the one intended by the utterer, and Corazza et al.’s proposal that the relevant context is fixed by conventions delivered by the utterance setting. The discussion of these two accounts reveals that an adequate theory of indexical reference should allow the speaker to use indexicals in novel ways, whilst holding that what a speaker can refer to with an indexical utterance is constrained by what an audience can understand. I develop an account based around these two requirements. (shrink)

Kaplan claims in Demonstratives that no operator may manipulate the context of evaluation of natural language indexicals. We show that this is not so. In fact, attitude reports always manipulate a context parameter (or, rather, a context variable). This is shown by (i) the existence of De Se readings of attitude reports in English (which Kaplan has no account for), and (ii) the existence of a variety of indexicals across languages whose point of evaluation can be shifted, but only in (...) attitude reports. We develop an alternative account within an extensional framework with overt quantification over times, worlds and contexts. Various typological facts are discussed, esp. the distinction between English, Amharic and Ewe pronouns, and that between English and Russian tenses. (shrink)

In Context and Content Robert Stalnaker develops a philosophical picture of the nature of speech and thought and the relations between them. These collected essays offer philosophers and cognitive scientists a summation of Stalnaker's important and influential work in this area. His new introduction to the volume gives an overview of this work and offers a convenient way in for those who are new to it.

In this paper I defend Kaplan’s claim that the sentence “I am here now” is logically true. A number of counter-examples to the claim have been proposed, including occurrences of the sentence in answerphone messages, written notes left for later decoding, etc. These counter-examples are only convincing if they can be shown to be cases where the correct context with respect to which the utterance should be evaluated is the context in which it is decoded rather than encoded. I argue (...) that this is not the case, and draw on the distinction between force and content to suggest an alternative account of how information is communicated in these cases that is consistent with Kaplan’s semantic theory. (shrink)