This paper presents corpus and experimental data that problematize the traditional analysis of must as a strong necessity modal, as recently revived and defended by von Fintel and Gillies :351–383, 2010). I provide naturalistic examples showing that must p can be used alongside an explicit denial of knowledge of p or certainty in p, and that it can be conjoined with an expression indicating that p is not certain or that not-p is possible. I also report the results of an (...) experiment involving lotteries, where most participants endorsed a sentence of the form must not-p despite being instructed that p is a possibility. Crucially, endorsement was much higher for must in this context than for matched sentences with knowledge or certainty expressions. These results indicate that the requirements for felicitous use of must are weaker than for know and certain rather than being at least as strong, as the epistemic necessity theory would predict. However, it is possible to account for these data while retaining the key insights of von Fintel and Gillies’ analysis of the evidential component of must. I discuss several existing accounts that could be construed in this way and explain why none is completely satisfactory. I then propose a new model that embeds an existing scalar theory into a probabilistic model of informational dynamics structured around questions and answers. (shrink)

We derive a probabilistic account of the vagueness and context-sensitivity of scalar adjectives from a Bayesian approach to communication and interpretation. We describe an iterated-reasoning architecture for pragmatic interpretation and illustrate it with a simple scalar implicature example. We then show how to enrich the apparatus to handle pragmatic reasoning about the values of free variables, explore its predictions about the interpretation of scalar adjectives, and show how this model implements Edgington’s Vagueness: a reader, 1997) account of the sorites paradox, (...) with variations. The Bayesian approach has a number of explanatory virtues: in particular, it does not require any special-purpose machinery for handling vagueness, and it is integrated with a promising new approach to pragmatics and other areas of cognitive science. (shrink)

ABSTRACT A trivalent theory of indicative conditionals automatically enforces Stalnaker's thesis – the equation between probabilities of conditionals and conditional probabilities. This result holds because the trivalent semantics requires, for principled reasons, a modification of the ratio definition of conditional probability in order to accommodate the possibility of undefinedness. I explain how this modification is motivated and how it allows the trivalent semantics to avoid a number of well-known triviality results, in the process clarifying why these results hold for many (...) bivalent theories. In short, the slew of triviality results published in the last 40-odd years need not be viewed as an argument against Stalnaker's thesis: it can be construed instead as an argument for abandoning the bivalent requirement that indicative conditionals somehow be assigned a truth-value in worlds in which their antecedents are false. (shrink)

Conditionals frequently convey that the antecedent is relevant to the consequent. Recently many authors have argued that this relevance is part of the conventional meaning of conditionals, but this approach fails to account for many examples where a conditional is used to conveyirrelevance of antecedent to consequent. Both types of conditionals are best explained by a conventional meaning with no relevance requirement, and a separate process of coherence establishment among successive clauses in discourse. This account is supported by the distribution (...) of discourse particles and is able to account for experimental studies used to support the conventionalist position. (shrink)

Abstract: Chomsky (1986) has claimed that the prima facie incompatibility between descriptive linguistics and semantic externalism proves that an externalist semantics is impossible. Although it is true that a strong form of externalism does not cohere with descriptive linguistics, sociolinguistic theory can unify the two approaches. The resulting two-level theory reconciles descriptivism, mentalism, and externalism by construing community languages as a function of social identification. This approach allows a fresh look at names and definite descriptions while also responding to Chomsky's (...) (1993, 1995) challenge to articulate an externalist theory of meaning that can be used in the scientific investigation of language. (shrink)

The basic Bayesian model of credence states, where each individual’s belief state is represented by a single probability measure, has been criticized as psychologically implausible, unable to represent the intuitive distinction between precise and imprecise probabilities, and normatively unjustifiable due to a need to adopt arbitrary, unmotivated priors. These arguments are often used to motivate a model on which imprecise credal states are represented by sets of probability measures. I connect this debate with recent work in Bayesian cognitive science, where (...) probabilistic models are typically provided with explicit hierarchical structure. Hierarchical Bayesian models are immune to many classic arguments against single-measure models. They represent grades of imprecision in probability assignments automatically, have strong psychological motivation, and can be normatively justified even when certain arbitrary decisions are required. In addition, hierarchical models show much more plausible learning behavior than flat representations in terms of sets of measures, which—on standard assumptions about update—rule out simple cases of learning from a starting point of total ignorance. (shrink)

Thought: A Journal of Philosophy, Volume 10, Issue 1, Page 42-52, March 2021.

Epistemic and deontic comparatives differ in how they interact with disjunction. I argue that this difference provides a compelling empirical argument against the semantics of Kratzer, which predicts that all modal comparatives should interact with disjunction in the same way. Interestingly, an identical distinction is found in the semantics of non-modal adjectives: additive adjectives like ‘heavy’ behave logically like epistemic comparatives, and intermediate adjectives like ‘hot’ behave like deontic comparatives. I characterize this distinction formally and argue that the divergence between (...) epistemic and deontic modals explained if we structure their semantics around scalar concepts: epistemic modals should be analyzed using probability , and deontic modals using expected value. (shrink)

The European Summer School in Logic, Language and Information is organized every year by the Association for Logic, Language and Information in different sites around Europe. The main focus of ESSLLI is on the interface between linguistics, logic and computation. ESSLLI offers foundational, introductory and advanced courses, as well as workshops, covering a wide variety of topics within the three areas of interest: Language and Computation, Language and Logic, and Logic and Computation. During two weeks, around 50 courses and 10 (...) workshops are offered to the attendants, each of 1.5 hours per day during a five days week, with up to seven parallel sessions. ESSLLI also includes a student session and four evening lectures by senior scientists in the covered areas. The 15 revised full papers presented were carefully reviewed and selected. The papers are organized in topical sections on The papers are organized in topical sections on language and computation; logic and computation; and logic and language. (shrink)

Individualists and externalists about language take themselves to be disagreeing about the basic subject matter of the study of language. Are linguistic facts are really facts about individuals, or really facts about language use in a community?The right answer to this question, I argue, is ‘Yes’. Both individualistic and social facts are crucial to a complete understanding of human language. The relationship between the theories inspired by these facts is analogous to the relationship between anatomy and ecology, or between micro- (...) and macro-economics: both types of facts are important objects of study in their own right, but we need a theory that accounts for the complex relationship between the two. I argue that modern extensions of the signaling-games approach of Lewis (1969) do just this, defusing the conflict while preserving the core positive insights of both sides of this debate.The upshot is that arguments for social externalism and the normativity of meaning pose no threat to individualist explanations and can be accountedfor within a naturalistic theory of language. A good externalist theory will make crucial reference to individualistic facts, but go further by examining language users’ interactions in a systematic way. (shrink)

Research has uncovered consistent gender differences in attitudes toward gay men, with women expressing less prejudice than men (Herek, 2003). Attitudes toward lesbians generally show a similar pattern, but to a weaker extent. The present work demonstrated that motivation to respond without prejudice importantly contributes to these divergent attitudes. Study 1 revealed that women evince higher internal motivation to respond without prejudice (IMS, Plant & Devine, 1998) than do men and that this difference partially mediates the relationship between gender and (...) attitudes toward gay men. The second study replicated this finding and demonstrated that IMS mediates the relationship between gender and attitudes toward lesbians. Study 2 further revealed that gender-role variables contribute to the observed gender differences in motivation to respond without prejudice. These findings provide new insights into the nature of sexual prejudice and for the first time point to possible antecedents of variation in motivation to respond without prejudice. (shrink)

We elucidate the epistemological futility of using concepts such as unconscious thinking in research. Focusing on Newell & Shanks' use of the lens model as a framework, we clarify issues with regard to unconscious-thought theory and self-insight studies. We examine these key points: Brunswikian psychology is absent in UTT; research on self-insight did not emerge to explore the unconscious; the accuracy of judgments does not necessitate the unconscious; and the prescriptive claim of UTT is unfounded.

Two recent and influential papers, van Rooij 2007 and Lassiter 2012, propose solutions to the proviso problem that make central use of related notions of independence—qualitative in the first case, probabilistic in the second. We argue here that, if these solutions are to work, they must incorporate an implicit assumption about presupposition accommodation, namely that accommodation does not interfere with existing qualitative or probabilistic independencies. We show, however, that this assumption is implausible, as updating beliefs with conditional information does (...) not in general preserve independencies. We conclude that the approach taken by van Rooij and Lassiter does not succeed in resolving the proviso problem. (shrink)

It is common to hear talk of the aim of belief and to find philosophers appealing to that aim for numerous explanatory purposes. What belief 's aim explains depends, of course, on what that aim is. Many hold that it is somehow related to truth, but there are various ways in which one might specify belief 's aim using the notion of truth. In this article, by considering whether they can account for belief 's standard of correctness and the epistemic (...) norms governing belief, I argue against certain prominent specifications of belief 's aim given in terms of truth, and advance a neglected alternative. (shrink)

Cultural psychologists often describe the relationship between mind and culture as ‘dynamic.’ In light of this, we provide two desiderata that a theory about encultured minds ought to meet: the theory ought to reflect how cultural psychologists describe their own findings and it ought to be thoroughly naturalistic. We show that a realist theory of causal powers — which holds that powers are causally-efficacious and empirically-discoverable — fits the bill. After an introduction to the major concepts in cultural psychology and (...) describing causal power realism, we use a case study — the effects of pathogen prevalence on culture and cognition — to show the explanatory capacities of the powers framework. (shrink)

The coupling-constitution fallacy claims that arguments for extended cognition involve the inference of “x and y constitute z” from “x is coupled to y” and that such inferences are fallacious. We argue that the coupling-constitution fallacy fails in its goal to undermine the hypothesis of extended cognition: appeal to the coupling-constitution fallacy to rule out possible empirical counterexamples to intracranialism is fallacious. We demonstrate that appeals to coupling-constitution worries are problematic by constructing the fallacious argument against the hypothesis of extended (...) cognition. We consider several objections to our argument and find them insufficient to rebut our conclusion. (shrink)

Geared to preparing students to make the transition from solving problems to proving theorems, this text teachs them the techniques needed to read and write proofs. The book begins with the basic concepts of logic and set theory, to familiarize students with the language of mathematics and how it is interpreted. These concepts are used as the basis for a step-by-step breakdown of the most important techniques used in constructing proofs. To help students construct their own proofs, this new edition (...) contains over 200 new exercises, selected solutions, and an introduction to Proof Designer software. No background beyond standard high school mathematics is assumed. Previous Edition Hb (1994) 0-521-44116-1 Previous Edition Pb (1994) 0-521-44663-5. (shrink)

“It's almost like putting salt in a wound, for this person who's already made a very difficult decision,” suggested Meghan Patterson, a licensed obstetrician-gynecologist whom we interviewed in our qualitative study of the experiences of North Carolina abortion providers practicing under the state's Woman's Right to Know Act. The act requires that women receive counseling with state-mandated information at least twenty-four hours prior to obtaining an abortion. After the law was passed, Patterson worked with clinic administrators, in consultation with a (...) lawyer, to write a script to be used in the state-mandated counseling procedure. She and her colleagues took particular steps to mitigate the effects of what she described as HB 854's “forced language”—such as referring to the “father of the child.” While HB 854 stipulated that patients must be informed of the medical risks associated with the particular abortion procedure as well as those of carrying the child to term, Patterson's script made explicit the magnitude of comparative risks, emphasizing that the risks of carrying a pregnancy to term are substantially greater than the risks of an early-term abortion. She felt that these contextualization strategies helped to facilitate trust and rapport in a clinical care situation that proved relationally and morally challenging. In this article, we take up and expand on this point by elucidating an empirically grounded approach to ethically justified care when health care providers face legal or institutional policy mandates that raise possible moral conflicts. Our approach builds on recent bioethics discourse addressing conscience in the practice of medicine. While the concept of conscience has broad philosophical underpinnings relating to moral judgment, agency, and discernments of right and wrong, debates in bioethics have tended to engage the concept primarily vis-à-vis rights of conscientious objection or refusal. Here, we suggest a broader frame for thinking about claims of conscience in health care. Our approach draws on the feminist bioethics and the ethics of care literatures to highlight how providers may be motivated by matters of conscience, including relational concerns, in the active provision of certain forms of care. What emerges are two possibilities: not only conscientious refusal to comply with a policy mandate but also conscientious compliance—working conscientiously within a mandate's confines. (shrink)

The _Physics_ is a foundational work of western philosophy, and the crucial one for understanding Aristotle's views on matter, form, essence, causation, movement, space, and time. This richly annotated, scrupulously accurate, and consistent translation makes it available to a contemporary English reader as no other does—in part because it fits together seamlessly with other closely associated works in the New Hackett Aristotle series, such as the _Metaphysics_, _De Anima_, and forthcoming _De Caelo_ and _On Coming to Be and Passing Away_. (...) Eventually the series will include all of Aristotle's works. Sequentially numbered endnotes provide the information most needed at each juncture, while a detailed Index of Terms indicates places where focused discussion of key notions occurs. An illuminating general Introduction describes the book that lies ahead, explaining what sort of work it is and what sorts of evidence it relies on. (shrink)

This model explores consensus among agents in a population in terms of two properties. The first is a probability of belief change. This value indicates how likely agents are to change their mind in interactions. The other is the size of the agents audience: the proportion of the population the agent has access to at any given time. In all instances, the agents converge on a single belief, although the agents are arational. I argue that this generates a skeptical hypothesis: (...) any instance of purportedly rational consensus might just as well be a case of arational belief convergence. I also consider what the model tells us about increasing the likelihood that one agent’s belief is adopted by the rest. Agents are most likely to have their beliefs adopted by the entire population when their value for PBC is low relative to the rest of the population and their audience sizes are roughly three-quarters of the largest possible audience. I further explore the consequences of dogmatists to the population; individuals who refuse to change their mind end up polarizing the population. I conclude with reflections on the supposedly special character of rationality in belief-spread. (shrink)

Embodied, embedded, enactive, and extended theorists do not typically focus on the ontological frameworks in which they develop their theories. One exception is 4E theories that embrace New Mechanism. In this paper, we endorse the New Mechanist’s general turn to ontology, but argue that their ontology is not the best on the market for 4E theories. Instead, we advocate for a different ontology: causal powers realism. Causal powers realism posits that psychological manifestations are the product of mental powers, and that (...) mental powers are empirically-discoverable features of individuals that account for the causal work those individuals do. We contend that causal powers realism provides a unifying framework for the central commitments of 4E theories, as well as additional resources for theorizing in a 4E framework. And while New Mechanism offers some of these resources as well, we argue that causal powers realism is ultimately the better of the two. (shrink)

Implicit bias results from living in a society structured by race. Tamar Gendler has drawn attention to several epistemic costs of implicit bias and concludes that paying some costs is unavoidable. In this paper, we reconstruct Gendler’s argument and argue that the epistemic costs she highlights can be avoided. Though epistemic agents encode discriminatory information from the environment, not all encoded information is activated. Agents can construct local epistemic environments that do not activate biasing representations, effectively avoiding the consequences of (...) activation. We conclude that changing our local environments provides a way to avoid paying implicit bias’s epistemic costs. (shrink)

The aim of this paper is to describe and defend the moving spotlight theory of time. I characterise the moving spotlight theory as the conjunction of two theses: permanentism, the thesis that everything exists forever, and the A-theory, the thesis that there is an absolute, objective present time. I begin in Sect. 2 by clearing up some common misconceptions about the moving spotlight theory, focusing on the discussion of the theory in Sider. In doing so, I also fill-out the barebones (...) picture of the moving spotlight theory as the conjunction of permanentism and the A-theory. In Sect. 3 I show how moving spotlighters can avoid the two common objections to their view, the McTaggartian argument that the view is contradictory, and the epistemic argument that the view implies that we should believe we are not located at the present moment. I conclude that the moving spotlight theory does not deserve its current relative unpopularity. (shrink)

Ayahuasca, an ancient Amazonian psychedelic tea traditionally used ceremonially among indigenous peoples, has recently become known as a possible treatment for a wide range of disorders. The awareness of this sacred medicine has grown exponentially over the past decade, attracting westerners from a wide variety of backgrounds, hoping to find treatment for a myriad of emotional and physical illnesses, as well as spiritual needs. In the wake of the commercialization and westernization of the use of ayahuasca, and the subsequent proliferation (...) of ayahuasca treatment centers, this paper examines the benefits and possible risks of this form of therapy in an effort to create a safety protocol for Westerners in this context. The most practical approach to increasing safety for Westerners attending these Amazonian treatment centers is to educate the seeker prior to treatment and to provide access to specialized therapeutic aftercare services. (shrink)

In this paper, I develop a view about machine autonomy grounded in the theoretical frameworks of 4E cognition and PF Strawson’s reactive attitudes. I begin with critical discussion of White, and conclude that his view is strongly committed to functionalism as it has developed in mainstream analytic philosophy since the 1950s. After suggesting that there is good reason to resist this view by appeal to developments in 4E cognition, I propose an alternative view of machine autonomy. Namely, machines count as (...) autonomous when we members of the moral community adopt reactive attitudes in response to their actions. I distinguish this view from White’s and suggest assets and liabilities of this approach. (shrink)

Novices sometimes misidentify authorities and end up endorsing false beliefs as a result. In this paper, I suggest that this phenomenon is at least sometimes the result of culturally evolved mechanisms functioning in faulty epistemic contexts. I identify three background conditions which, when satisfied, enable expert-identifying mechanisms to function properly. When any one of them fails, that increases the likelihood of identifying a non-authority as authoritative. Consequently, novices can end up deferring to merely apparent authorities without having failed in any (...) epistemic obligations. (shrink)

Different versions of the A-theory of time are traditionally defined in terms of whether everything is present, or whether there are also past and future things. In this paper I argue that the traditional way of defining A-theories should be abandoned. I focus on the traditional definition of presentism, according to which always, everything is present. First, I argue that there are good reasons to reject all the most plausible interpretations of the predicate ‘is present’ as it appears in the (...) traditional definition of presentism. It follows that there are also good reasons to reject the most plausible interpretations of the traditional definitions of the other A-theories. I then argue that there is a better way of defining the A-theories, in terms of the question of whether existence has a beginning and an end. Finally, I argue that what goes for the traditional definition of presentism goes for the traditional definition of its modal analogue actualism, according to which necessarily, everything is actual : there are good reasons to reject the traditional definition of actualism in favour of a definition in terms of contingent existence. (shrink)

Background: Laws governing abortion provision are proliferating throughout the United States, yet little is known about how these laws affect providers. We investigated the experiences of abortion...

A naturalistic approach to expert-identification begins by asking, ‘how do novices pick out putative experts?’ Alvin Goldman and Elizabeth Anderson, representing a fairly common approach, consider agents’ psychological biases as well as social situatedness. As good as this is, culture’s role in shaping cognitive mechanisms is neglected. An explanatory framework that works well to accommodate culturally-sensitive mechanisms is Peircean semiotics. His triadic approach holds that signs signify objects to interpreters. Applying the triadic model to expert-identification: novices interpret signs of expertise (...) as pointing to particular experts. The main advantage of the framework is that it is significantly more nuanced than the Goldman-Anderson model in describing how agents identify experts. It explicitly accommodates cultural and agential differences in expert-identification. It also explicitly admits the possibility of rational disagreement in assessment of evidence for expertise. But these advantages come at a cost. Namely, it’s difficult in theory – as well as practice – to make one’s way into the semiotic system of someone from another culture to help guide them away from fraudulent experts. Even so, it’s a trade-off worth making since it organizes relevant details for expert-identification, which is a first step in sketching a better normative theory. (shrink)

In this article, we offer an overview of the philosophical and psychological literatures on expertise. Work so far has failed to engage with recent work in embodied and encultured cognition--in particular the notions of interactivity and semiosis. We suggest how bringing these concepts on board reveals new areas of research concerning the philosophy and psychology of expertise. We conclude with a brief synopsis of each paper.

The method of reflective equilibrium is typically characterized as a process of two kinds of adjustments: hold fixed one’s current set of commitments/intuitions and adjust rules/principles to account for them, then hold fixed those rules while making adjustments to one’s set of commitments. Repeat until no further adjustments are required. Such characterizations ignore the role of precedent, i.e., information about the commitments and rules of others and how those might serve as guides in one’s own process of deliberation. In this (...) paper we develop a model that narrows in on a local part of a reflective equilibrium process in which a group of peer agents start with identical lists of commitments and work towards finding the rule that captures that set. If successful, we say they reach rest stop interpersonal convergence. The trouble is that, without precedent, reaching this convergence rests on implausible deterministic assumptions. We analyze how far the inclusion of a kind of soft precedent goes towards aiding the group in reaching said convergence when those assumptions are relaxed. (shrink)

What, if anything, is wrong with acquiring moral beliefs on the basis of testimony? Most philosophers think that there is something wrong with it, and most point to a special problem that moral testimony is supposed to create for moral agency. Being a good moral agent involves more than bringing about the right outcomes. It also involves acting with "moral understanding" and one cannot have moral understanding of what one is doing via moral testimony. And so, adherents to this view (...) claim, relying on moral testimony is problematic. Importantly, the problem that afflicts moral testimony, according to this view, is not a problem for testimonial knowledge in general. Indeed, critics of moral testimony acknowledge that a vast amount of our knowledge comes, completely unproblematically, from testimony. Call this the Asymmetry Thesis. We argue that while the diagnosis of what is wrong with moral testimony (when there is something wrong with it) in terms of moral understanding is correct, the lesson many of its adherents draw from it, namely that there is a principled difference between moral an non-moral testimony which renders the first, but not the second, problematic, is not. In other words, we argue that the Asymmetry Thesis is false. (shrink)

We build a model of the reflective equilibrium method to better understand under what conditions a community of agents would achieve a shared equilibrium. We find that, despite guaranteeing that agents individually reach equilibrium and numerous constraints on how agents deliberate, it is surprisingly difficult for a community to converge on a small number of equilibria. Consequently, the literature on reflective equilibrium has underestimated the challenge of coordinating intrapersonal convergence and interpersonal convergence.

According to the A-theory of time some instant of time is absolutely present. Many reject the A-theory on the grounds that it is inconsistent with current spacetime physics, which appears to leave no room for absolute presentness. However, some reject the A-theory on purely philosophical grounds. In this article I describe three purely philosophical arguments against the A-theory and show that there are plausible A-theoretic responses to each of them. I conclude that, whatever else is wrong with the A-theory, it (...) is not obviously a philosophically suspect theory. (shrink)

In this paper, we describe causal powers realism as a conjunction of four claims: causal powers are not reducible to counterfactuals; they are empirically-discoverable; they manifest effects in conjunction with partners; and their manifestations empower further manifestations. We describe four challenges to extended mind theory and for each show how an ontology of causal powers realism either avoids or dissolves the problem. We close by suggesting that causal powers realism isn’t a competitor with extended mind theory but rather a new (...) way to understand what it means for minds to be extended. (shrink)

Presentism is typically characterised as the thesis that everything is present, and therefore there are no dinosaurs or Martian presidential inaugurations. Putting aside the vexed question of exactly what it is to be present in this context, this thesis seems quite straightforward. However, a number of authors—such as Merricks, Lombard, Meyer, Tallant and Sakon —have argued that Presentism so characterised is either trivially true or false even by Presentist lights. This is the so-called Triviality Argument against Presentism. In this paper (...) I show that three of the four premises of the Triviality Argument are plausibly false. I conclude that Presentists have nothing to fear from the Triviality Argument. (shrink)

The aim of this article is to support the position that what is implicated is not determined by speaker intention, a claim which runs counter to the widely accepted position that what is implicated is determined by speaker intention. This article argues for the conclusion that communication of conversational implicatures can be unintended by presenting three examples in which Grice’s criteria for the completion of conversational implicature are satisfied but the speaker does not intend to implicate anything. The article ends (...) with the suggestion that rules governing implicatures are importantly normative and that linguistic communal norms account for their normativity. (shrink)

Some epistemic agents will not change their position on a claim. These are dogmatists, common creatures in our epistemic communities. This paper discusses the population-level epistemic effects of increasing numbers of dogmatists. All agents in the model are assigned a degree of belief (using a Likert-type scale) and adopt the beliefs of others in interactions. Subsets of agents are dogmatists. Analysis of model results suggests that even a modest increase in a group's dogmatists can have substantial effects on belief spread. (...) I conclude by arguing that the model (a) helps identify two kinds of dogmatists and (b) suggests another way epistemic bubbles can form. (shrink)