Presuppositions and Antipresuppositions in Conditionals∗
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Gibbardian Collapse and Trivalent Conditionals
Gibbardian Collapse and Trivalent Conditionals Paul Égré* Lorenzo Rossi† Jan Sprenger‡ Abstract This paper discusses the scope and significance of the so-called triviality result stated by Allan Gibbard for indicative conditionals, showing that if a conditional operator satisfies the Law of Import-Export, is supraclassical, and is stronger than the material conditional, then it must collapse to the material conditional. Gib- bard’s result is taken to pose a dilemma for a truth-functional account of indicative conditionals: give up Import-Export, or embrace the two-valued analysis. We show that this dilemma can be averted in trivalent logics of the conditional based on Reichenbach and de Finetti’s idea that a conditional with a false antecedent is undefined. Import-Export and truth-functionality hold without triviality in such logics. We unravel some implicit assumptions in Gibbard’s proof, and discuss a recent generalization of Gibbard’s result due to Branden Fitelson. Keywords: indicative conditional; material conditional; logics of conditionals; triva- lent logic; Gibbardian collapse; Import-Export 1 Introduction The Law of Import-Export denotes the principle that a right-nested conditional of the form A → (B → C) is logically equivalent to the simple conditional (A ∧ B) → C where both antecedentsare united by conjunction. The Law holds in classical logic for material implication, and if there is a logic for the indicative conditional of ordinary language, it appears Import-Export ought to be a part of it. For instance, to use an example from (Cooper 1968, 300), the sentences “If Smith attends and Jones attends then a quorum *Institut Jean-Nicod (CNRS/ENS/EHESS), Département de philosophie & Département d’études cog- arXiv:2006.08746v1 [math.LO] 15 Jun 2020 nitives, Ecole normale supérieure, PSL University, 29 rue d’Ulm, 75005, Paris, France. -
Making Inferences: the Case of Scalar Implicature Processing Judith Degen ([email protected]) Michael K
Making Inferences: The Case of Scalar Implicature Processing Judith Degen ([email protected]) Michael K. Tanenhaus ([email protected]) Department of Brain and Cognitive Sciences, University of Rochester Rochester, NY 14627-0268, USA Abstract ten). Under the assumption that a speaker is being as informa- tive as possible, a weak implicature, that the speaker doesn’t Scalar implicature has served as a test case for investigating the nature of inference processes in language comprehension. know whether all of the sections are written, is licensed. If Specifically, the question of whether or not scalar implicatures the hearer further assumes that the speaker is competent with are computed by default has been extensively investigated in respect to the truth of the stronger statement, the implicature recent years. We argue that the question of default is overly simplistic and propose instead to think of scalar implicature that the speaker believes that some, but not all of the sections computation as a problem of optimal cue combination within a are written, is licensed. constraint-based framework. We provide evidence from three In recent years the representation and processing of scalar experiments supporting the view that multiple constraints of differing strength operate in parallel to provide probabilistic implicatures has emerged as perhaps the defining problem in support for or against an implicature. experimental pragmatics – a subfield of cognitive science that Keywords: experimental pragmatics; scalar implicature; eye- seeks to combine theoretical proposals from linguistics, com- tracking; subitizing puter science and philosophy with state-of-the-art experimen- tal methods. Introduction Importantly for the experimental investigation of the phe- Successful communication requires comprehenders to infer a nomenon, scalar implicatures are cancelable, that is, they are speaker’s intended meaning from an underspecified utterance. -
The Presupposition of Subjunctive Conditionals
The Presupposition of Subjunctive Conditionals Kai von Fintel M.I.T. 0. Introduction Why are some conditionals subjunctive? It is often assumed that at least one crucial difference is that subjunctive conditionals presuppose that their antecedent is false, that they are counterfactual (Lakoff 1970). The traditional theory has apparently been refuted. Perhaps the clearest counter-example is one given by Alan Anderson (1951: 37): If Jones had taken arsenic, he would have shown just exactly those symptoms which he does in fact show. A typical place to use such a subjunctive conditional would be in the course of an argument that tries to bolster the hypothesis that Jones did in fact take arsenic. But then it would of course be self-defeating to presuppose that the hypothesis is false. Thus, something else must be going on. 1. Preliminaries Let’s first assume the following “strict” semantics for “bare” conditionals, those in which the if-clause restricts an implicit quantifier over worlds: (1) Schematic Truth-Conditions for Bare Conditionals A bare conditional if p, q has the logical form " D (if p) (q). If defined, it is true in a world w iff all worlds w' in D(w) such that p(w') are such that q(w'): p Ç D(w) Í q. Here D is a function that assigns to any (evaluation) world w a set of accessible worlds. This semantics departs in some ways from the more standard Stalnaker-Lewis analysis and is justified in a recent paper of mine (von Fintel 1997). What it *Thanks to Paul Portner for very helpful comments on a previous draft. -
Some Remarks on Indicative Conditionals
Some Remarks on Indicative Conditionals Barbara Abbott Michigan State University 1. Introduction This paper concerns indicative conditionals, such as the English examples in (1): (1) a. If Lynn was at the meeting, she knows what's going on. b. If we leave now, we can make the 5:00 show. c. If it rains tomorrow, we won't have a picnic. We wi11look at several theories of indicative conditionals grouped into three categories: those that base its semantics on its logical counterpart (the material conditional); intensional analyses, which bring in alternative possible worlds; and a third subgroup which denies that indicative conditionals express propositions at all. We will also look at some problems for each kind of approach. 2. The Material Conditional Analysis There is a long tradition that associates natural language indicative conditionals with the material conditional of propositional logic. (Indeed, introductory logic texts typically assume this identification.) The semantics of the material conditional is given entirely by its truthtable, shown in (2). (2) p q p� q T T T T F F F T T F F T On this account natural language indicative conditionals express a truth function of their component sentences. 2.1. Problems fo r the Material Conditional Approach There are several problems for this approach. One stressed by Edgington (1995, 2003) is the following: assigning indicative conditionals the material conditional truth function means failing to distinguish between unequally probable conditionals with equally improbable antecedents, like those in (3) (from Jackson 197911991, 115): © 2004 by Barbara Abbott R. Young (ed), SA LT XIV 1-19, Ithaca, NY: Cornell University. -
Conditional Strengthening [A Case Study in Implicature]
Draft • Version from 9/13/01 1:08 PM Conditional Strengthening [A Case Study in Implicature] Kai von Fintel MIT Introduction Hearers can extract from an asserted sentence a good amount of information that goes beyond the grammatically encoded truth-conditions of the sentence. There are inferences of at least two kinds: (i) Inferences from the (assumed) truth of the asserted sentence. Hearers may have conditional beliefs (if p, q) and upon hearing p asserted they can infer q by Modus Ponens (with suitable caveats about the reliability of their initial conditional belief and the new information that p). (ii) Inferences from the fact that the sentence was asserted. Hearers may have conditional beliefs of the following nature: if q were the case, p would not have been asserted. This together with the information that p was in fact asserted leads via Modus Tollens to the conclusion that q cannot have been the case. For both of these kinds of inferences, we can ask whether the speaker bears (some) responsibility for them. If the speaker is (or should be) well aware of the relevant conditional beliefs on the part of the hearer, he or she may be partly responsible for the inference. Many authors argue that such inferences are part of the utterance meaning if the underlying assumptions are mutual beliefs of speaker and hearer. It may often be much easier to decide whether speaker bears some responsibility for an inference than to decide whether the inference is part of the meaning of the utterance. I will not worry about these issues of responsibility. -
1. Introduction
MICHELA IPPOLITO PRESUPPOSITIONS AND IMPLICATURES IN COUNTERFACTUALS In this article, I propose a pragmatic account of temporally mismatched subjunctive past counterfactuals. The proposal consists of the following parts. First, I show that in cases of temporal mismatch, Past cannot be interpreted inside the proposition where it occurs at surface structure. Instead, it must be interpreted as constraining the time variable of the accessibility relation. This has the effect of shifting the time of the evaluation of the conditional to some contextually salient past time. Second, I will propose specific Felicity Conditions (presuppositions) for subjunctive conditionals and I will argue that there is a strict correspondence between the time of evaluation in the truth-conditions of a conditional and the time relevant for the felicity conditions. In other words, if the time relevant for the accessibility relation has been shifted to the past, then the conditional’s presupposition will make reference to the speaker’s past epistemic states. On the other hand, if no past is constraining the time argument of the accessibility relation, the conditional’s felicity will make reference to the speaker’s epistemic state at the time of the utterance. Third, I will argue that the intuition that the antecedent of mismatched counterfactuals is not true is a scalar implicature arising not from a competition between assertions but between presuppositions. Finally, I will investigate the general repercussions of my proposal on the problem of presupposition projection. 1. Introduction Past subjunctive conditionals do not always talk about the past. Sometimes they may talk about the future, despite the overt past verbal morphology. -
Indicative Conditionals: Probabilities and Relevance
Philos Stud https://doi.org/10.1007/s11098-021-01622-3 Indicative conditionals: probabilities and relevance 1,2 2 Francesco Berto • Aybu¨ke O¨ zgu¨n Accepted: 21 February 2021 Ó The Author(s) 2021 Abstract We propose a new account of indicative conditionals, giving acceptability and logical closure conditions for them. We start from Adams’ Thesis: the claim that the acceptability of a simple indicative equals the corresponding conditional probability. The Thesis is widely endorsed, but arguably false and refuted by empirical research. To fix it, we submit, we need a relevance constraint: we accept a simple conditional u ! w to the extent that (i) the conditional probability pðwjuÞ is high, provided that (ii) u is relevant for w. How (i) should work is well-understood. It is (ii) that holds the key to improve our understanding of conditionals. Our account has (i) a probabilistic component, using Popper functions; (ii) a relevance component, given via an algebraic structure of topics or subject matters. We present a probabilistic logic for simple indicatives, and argue that its (in)validities are both theoretically desirable and in line with empirical results on how people reason with conditionals. Keywords Conditionals Á Conditional probabilities Á Relevance Á Adams’ thesis Á Subject matter People do not consider the conditional probability to be the only basis for asserting a conditional, even if they judge the probability of the conditional to be the conditional probability. Evans & Over, If. & Francesco Berto [email protected] Aybu¨ke O¨ zgu¨n [email protected] 1 Arche´, University of St Andrews, St Andrews, Scotland 2 ILLC, University of Amsterdam, Amsterdam, The Netherlands 123 F. -
The Acquisition of Scalar Implicatures
Wer bei „scalar implicatures“ an eine exotische Zierfischart denkt und vor seinem geistigen Auge bunte Segelflosser majestätisch zwischen Steinen und Grünpflanzen dahinschweben sieht, der irrt sich sehr: Stefanie Röhrig Scalar implicatures bezeichnen keine Buntbarschart, sondern gehören in den Bereich der Pragmatik. Diese Disziplin der Linguistik untersucht sprachliches Handeln, also sprachliche Äußerungen und die Entstehung von Bedeutung. Insbesondere logische Schlussfolgerungen sind von wissenschaftlichem The Acquisition of Interesse. Wer auf die Frage „Have you read Shakespeare‘s works?“ mit „I have read some of them“ antwortet, der bejaht einerseits die Frage, schränkt aber - ohne dies ausdrücklich zu sagen - zugleich die Zustimmung ein: some of them heißt nicht all of them. Implikaturen müssen ‚zwischen den Zeilen‘ Scalar Implicatures verstanden werden. Gewöhnlich wird davon ausgegangen, dass Kinder erst mit etwa 6 Jahren Implikaturen wirklich verstehen und für sich nutzen können. Stefanie Röhrig zeigt in ihrer als Feldstudie angelegten Göttinger Schriften zur Englischen Philologie Staatsarbeit, dass diese Lehrmeinung dringend der Überarbeitung bedarf. Denn Kinder, so decken ihre Untersuchungen auf, verfügen sogar über eine ihnen eigene Art der Implikatur. Band 3 2010 Stefanie Röhrig The Acquisition of Scalar Implicatures Scalar of Acquisition The Röhrig Stefanie ISBN: 978-3-941875-49-4 ISSN: 1868-3878 Universitätsdrucke Göttingen Universitätsdrucke Göttingen Stefanie Röhrig The Acquisition of Scalar Implicatures This work is licensed under the Creative Commons License 3.0 “by-nd”, allowing you to download, distribute and print the document in a few copies for private or educational use, given that the document stays unchanged and the creator is mentioned. You are not allowed to sell copies of the free version. -
Chasing Hook: Quantified Indicative Conditionals
1 Chasing Hook: Quantified Indicative Conditionals Angelika Kratzer University of Massachusetts at Amherst May 2015 Abstract This chapter looks at indicative conditionals embedded under quantifiers, with a special emphasis on ‘one-case’ conditionals as in No query was answered if it came from a doubtful address. It agrees with earlier assessments that a complete conditional (with antecedent and consequent) is embedded under a quantifier in those constructions, but then proceeds to create a dilemma by showing that we can’t always find the right interpretation for that conditional. Contrary to earlier assessments, Stalnaker’s conditional won’t always do. The paper concludes that the embedded conditional in the sentence above is a material implication, but the if- clause also plays a pragmatic role in restricting the domain of the embedding quantifier. That an appeal to pragmatics should be necessary at all goes with Edgington’s verdict that “we do not have a satisfactory general account of sentences with conditional constituents.” 2 0. Introduction I should say this upfront. The Hook from Edgington’s Conditionals is a man with opinions. He thinks that if is a truth-functional connective and corresponds to material implication. My Hook is not a ‘he’ or a ‘she’, but an ‘it’. It is material implication itself. It is É. Hook is elusive. We know it has a connection with if, but we don’t quite know what the connection is. My project is to hunt Hook down in the back alleys of English. It’s not that I think Hook is that special. I am interested in Hook because it makes a good probe for exploring the properties of embedded conditionals. -
Conversational Implicatures (And How to Spot Them)
Conversational Implicatures (and How to Spot Them) Michael Blome-Tillmann McGill University Abstract In everyday conversations we often convey information that goes above and beyond what we strictly speaking say: exaggeration and irony are obvious examples. H.P. Grice intro- duced the technical notion of a conversational implicature in systematizing the phenom- enon of meaning one thing by saying something else. In introducing the notion, Grice drew a line between what is said, which he understood as being closely related to the conventional meaning of the words uttered, and what is conversationally implicated, which can be inferred from the fact that an utterance has been made in context. Since Grice’s seminal work, conversational implicatures have become one of the major re- search areas in pragmatics. This article introduces the notion of a conversational implica- ture, discusses some of the key issues that lie at the heart of the recent debate, and expli- cates tests that allow us to reliably distinguish between semantic entailments and conven- tional implicatures on the one hand and conversational implicatures on the other.1 Conversational Implicatures and their Cancellability In everyday conversations our utterances often convey information that goes above and beyond the contents that we explicitly assert or—as Grice puts it—beyond what is said by our utterances. Consider the following examples:2 (1) A: Can I get petrol somewhere around here? B: There’s a garage around the corner. [A can get petrol at the garage around the corner.] (2) A: Is Karl a good philosopher? B: He’s got a beautiful handwriting. -
A Note on Conditionals and Restrictors∗
A note on conditionals and restrictors∗ Daniel Rothschild Introduction Within linguistic semantics, it is near orthodoxy that the function of the word `if' (in most cases) is to mark restrictions on quantification. Just as in the sentence `Every man smokes', the common noun `man' restricts the quantifier `every', in the sentence `Usually, if it's winter it's cold', `it's winter' acts as a restrictor on the situational quantifier `usually'. This view, originally due to Lewis (1975), has been greatly extended in work by Heim (1982) and, most notably, Kratzer (1981, 1986) into a rich theory of almost all uses of the word `if'. I call this the restrictor view of `if'. Despite its linguistic prominence, this view of the word `if' has played little role in the philosophical discussion of conditionals. Fairly recent philosophical surveys such as Bennett's (2003) book-length introduction or Edgington's (1995; 2008) review articles do not even mention the restrictor view. Stranger still, in his seminal work on conditionals and probability, Lewis (1976, 1986) does not mention the restrictor view which he pioneered, despite the intimate relation noted later by Kratzer (1986).1 This paper tries to fill in the gap left by these omissions.2 I make four main points. First, I argue that given the current state of things our best bet is to accept the `restrictor view' and to assume that `if' is not ambiguous, so ∗This paper was written for a conference in honor of Dorothy Edgington at the Institute of Philosophy, London in May 2011. I am grateful to Dilip Ninan, Scott Sturgeon, and Seth Yalcin for useful discussion of this topic, and particularly to Justin Khoo, whose recent draft (cited below) prompted me to think about these issues. -
Bare Numerals and Scalar Implicatures
Language and Linguistics Compass 7/5 (2013): 273–294, 10.1111/lnc3.12018 Bare Numerals and Scalar Implicatures Benjamin Spector* CNRS-ENS-EHESS, Institut Jean Nicod, École Normale Supérieure Abstract Bare numerals present an interesting challenge to formal semantics and pragmatics: they seem to be compatible between various readings (‘at least’, ‘exactly’, and ‘at most’ readings), and the choice of a particular reading seems to depend on complex interactions between contextual factors and linguistic structure. The goal of this article is to present and discuss some of the current approaches to the interpretation of bare numerals in formal semantics and pragmatics. It discusses four approaches to the interpretation of bare numerals, which can be summarized as follows: 1. In the neo-Gricean view, the basic, literal meaning of numerals amounts to an ‘at least interpreta- tion’, and the ‘exactly n’ reading results from a pragmatic enrichment of the literal reading, i.e. it is accounted for in terms of scalar implicatures. 2. In the underspecification view, the interpretation of numerals is ‘underspecified’, with the result that they can freely receive the ‘at least’, ‘exactly’,or‘at most’ reading, depending on which of these three construals is contextually the most relevant. 3. In the ‘exactly’-only view, the numerals’ basic, literal meaning corresponds to the ‘exactly’ reading, and the ‘at least’ and ‘fewer than n’ readings result from the interaction of this literal meaning with background, non-linguistic knowledge. 4. In the ambiguity view, numerals are ambiguous between two readings, the ‘at least’ and ‘exactly’ readings.The article argues that in order to account for all the relevant data, one needs to adopt a certain version of the ambiguity view.