Choices confront us with questions. How we act depends on our answers to those questions. So the way our beliefs guide our choices is not just a function of their informational content, but also depends systematically on the questions those beliefs address. This paper gives a precise account of the interplay between choices, questions and beliefs, and harnesses this account to obtain a principled approach to the problem of deduction. The result is a novel theory of belief-guided action that explains (...) and predicts the decisions of agents who, like ourselves, fail to be logically omniscient: that is, of agents whose beliefs may not be deductively closed, or even consistent. (Winner of the 2021 Isaac Levi Prize.). (shrink)

Conversational exculpature is a pragmatic process whereby information is subtracted from, rather than added to, what the speaker literally says. This pragmatic content subtraction explains why we can say “Rob is six feet tall” without implying that Rob is between 5'0.99" and 6'0.01" tall, and why we can say “Ellen has a hat like the one Sherlock Holmes always wears” without implying Holmes exists or has a hat. This article presents a simple formalism for understanding this pragmatic mechanism, specifying how, (...) in context, the result of such subtractions is determined. And it shows how the resulting theory of conversational exculpature accounts for a varied range of linguistic phenomena. A distinctive feature of the approach is the crucial role played by the question under discussion in determining the result of a given exculpature. (shrink)

This paper proposes a new account of bounded or minimal doxastic rationality (in the sense of Cherniak 1986), based on the notion that beliefs are answers to questions (à la Yalcin 2018). The core idea is that minimally rational beliefs are linked through thematic connections, rather than entailment relations. Consequently, such beliefs are not deductively closed, but they are closed under parthood (where a part is an entailment that answers a smaller question). And instead of avoiding all inconsistency, minimally rational (...) believers only avoid blatant inconsistencies (where some beliefs are blatantly inconsistent when they contradict one another on a particular question). Rather than cohering into a single overall world view, beliefs are more loosely connected in what is best described as a web of questions. This view of minimally rational belief naturally gives rise to an account of deductive inquiry on which deductive reasoning is a matter of posing new questions. (shrink)

This paper presents and defends an argument that the continuum hypothesis is false, based on considerations about objective chance and an old theorem due to Banach and Kuratowski. More specifically, I argue that the probabilistic inductive methods standardly used in science presuppose that every proposition about the outcome of a chancy process has a certain chance between 0 and 1. I also argue in favour of the standard view that chances are countably additive. Since it is possible to randomly pick (...) out a point on a continuum, for instance using a roulette wheel or by flipping a countable infinity of fair coins, it follows, given the axioms of ZFC, that there are many different cardinalities between countable infinity and the cardinality of the continuum. (shrink)

Using Riemann’s Rearrangement Theorem, Øystein Linnebo (2020) argues that, if it were possible to apply an infinite positive weight and an infinite negative weight to a working scale, the resulting net weight could end up being any real number, depending on the procedure by which these weights are applied. Appealing to the First Postulate of Archimedes’ treatise on balance, I argue instead that the scale would always read 0 kg. Along the way, we stop to consider an infinitely jittery flea, (...) an infinitely protracted border conflict, and an infinitely electric glass rod. (shrink)

Newton’s First Law of Motion is typically understood to govern only the motion of force-free bodies. This paper argues on textual and conceptual grounds that it is in fact a stronger, more general principle. The First Law limits the extent to which any body can change its state of motion –– even if that body is subject to impressed forces. The misunderstanding can be traced back to an error in the first English translation of Newton’s Principia, which was published a (...) few years after Newton’s death. (shrink)

Models of collective deliberation often assume that the chief aim of a deliberative exchange is the sharing of information. In this paper, we argue that an equally important role of deliberation is to draw participants’ attention to pertinent questions, which can aid the assembly and processing of distributed information by drawing deliberators’ attention to new issues. The assumption of logical omniscience renders classical models of agents’ informational states unsuitable for modelling this role of deliberation. Building on recent insights from psychology, (...) linguistics and philosophy about the role of questions in speech and thought, we propose a different model in which beliefs are treated as answers directed at specific questions. Here, questions are formally represented as partitions of the space of possibilities and individuals’ information states as sets of questions and corresponding partial answers to them. The state of conversation is then characterised by individuals’ information together with the questions under discussion, which can be steered by various deliberative inputs. Using this model, deliberation is then shown to shape collective decisions in ways that classical models cannot capture, allowing for novel explanations of how group consensus is achieved. (shrink)

The Kantian ethical position, especially as represented in Alan Donagan, rejects the possibility of unavoidable blameworthiness. Donagan also holds that morality is learned by participation. But consider: there must be some first instance of an agent’s being held blameworthy. To hold the agent blameworthy in that instance supposes that the agent could have known what morality required so as to be able to avoid blameworthiness. But before experiencing blameworthiness the agent can have no real understanding of the significance of morality’s (...) requiring anything, if morality is learned by participation. Hence the agent could not have known to avoid violating morality’s requirement. The agent could not have knowingly avoided being blameworthy in the first instance of blameworthiness, as he or she would not understand the significance of doing so. This is unavoidable blameworthiness. (shrink)

Philipp Koralus' "Reason and Inquiry" presents a questioning or erotetic theory of reasoning. This review connects ideas from the book to the broader philosophical literature on inquiry and questions, as well as providing a simplified overview of the theory.

Although both reflect a self-centered, antisocial personality, psychopathy and low self-control have seldom been examined together. This study cre­ated scales reflecting both common and unique elements of both constructs, investigated their factor structure, and explained variance in delinquency. Four alternative hypotheses were tested: that low self control and psychop­athy constitute a single construct, that they constitute primary and secon­dary psychopathy or interpersonal and intrapersonal traits, or that they constitute Antisociality - the tendency to perform antisocial acts- and (low) Self-Direction-the tendency (...) to act in one's long-term benefit. Models con­taining Antisociality and Self-Direction fit better than alternatives and ac­counted for substantial variance in offending. (shrink)

Narrative passages told from a character's perspective convey the character's thoughts and perceptions. We present a discourse process that recognizes characters'.

Narrative passages told from a character's perspective convey the character's thoughts and perceptions. We present a discourse process that recognizes characters' thoughts and perceptions in third-person narrative. An effect of perspective on reference In narrative is addressed: references in passages told from the perspective of a character reflect the character's beliefs. An algorithm that uses the results of our discourse process to understand references with respect to an appropriate set of beliefs is presented.

We present a computational analysis of de re, de dicto, and de se belief and knowledge reports. Our analysis solves a problem first observed by Hector-Neri Castañeda, namely, that the simple rule -/- `(A knows that P) implies P' -/- apparently does not hold if P contains a quasi-indexical. We present a single rule, in the context of a knowledge-representation and reasoning system, that holds for all P, including those containing quasi-indexicals. In so doing, we explore the difference between reasoning (...) in a public communication language and in a knowledge-representation language, we demonstrate the importance of representing proper names explicitly, and we provide support for the necessity of considering sentences in the context of extended discourse (for example, written narrative) in order to fully capture certain features of their semantics. (shrink)

Professor Phillipp H. Wiebe draws our attention to what aspects of our religious tradition is understandable by every human being on this planet.

The problem of closure for the traditional unstructured possible worlds model of attitudinal content is that it treats belief and other cognitive states as closed under entailment, despite apparent counterexamples showing that this is not a necessary property of such states. One solution to this problem, which has been proposed recently by several authors (Schaffer 2005; Yalcin 2018; Hoek forthcoming), is to restrict closure in an unstructured setting by treating propositional attitudes as question-sensitive. Here I argue that this line (...) of response is unsatisfying as it stands because the problem of closure is more general than is typically discussed. A version of the problem recurs for attitudes like wondering, entertaining, considering, and so on, which are directed at questions rather than propositions. For such questioning attitudes, the appeal to question-sensitivity is much less convincing as a solution to the problem of closure. (shrink)

One can lie by asserting non-literal content. If I tell you “You are the cream in my coffee” while hating you, I can be rightfully accused of lying if my true emotions are unearthed. This is not easy to accommodate under many definitions of lying while also preserving the lying-misleading distinction. The essential feature of non-literal utterances is their falsity when literally construed. This interferes with accounts of lying and misleading, because such accounts often combine a literal construal of what (...) is said by an utterance with a falsity requirement for lying. In the presence of non-literal lies such definitions struggle to make plau- sible predictions for non-literal lies and merely misleading utterances together. In this article I aim to fix this by extending Daniel Hoek’s pragmatic account of conversational exculpature to assertions in general. Since this mechanism is designed to compute the intended meanings of non-literal utterances, it straightforwardly predicts non-literal lies to be as such. The lying-misleading distinction is also preserved, because merely misleading utterances arise out of exploiting a different pragmatic mechanism—Gricean additive implicatures. Along the way I also draw some general lessons about assertion and implicatures. (shrink)

Skeptical invariantists maintain that the expression “knows” invariably expresses an epistemically extremely demanding relation. This leads to an immediate challenge. The knowledge relation will hardly if ever be satisfied. Consequently, we can rarely if ever apply “knows” truly. The present paper assesses a prominent strategy for skeptical invariantists to respond to this challenge, which appeals to loose talk. Based on recent developments in the theory of loose talk, I argue that such appeals to loose talk fail. I go on to (...) present a closely related, more promising response strategy, which combines assumptions about the dynamics of pragmatic presuppostions from Blome-Tillmann (2014) with an appeal to conversational exculpature, a phenomenon recently studied by Hoek (2018, 2019). (shrink)

In light of the problem of logical omniscience, some scholars have argued that belief is question-sensitive: agents don't simply believe propositions but rather believe answers to questions. Hoek (2022) has recently developed a version of this approach on which a belief state is a "web" of questions and answers. Here, we present several challenges to Hoek's question-sensitive account of belief. First, Hoek's account is prone to very similar logical omniscience problems as those he claims to address. Second, (...) the link between belief and action he proposes is too rigid. We close by sketching a generalization of the account that can meet these challenges. (shrink)

This paper offers a review of the catalogue composed by Myriam Vogelaar of one of the largest and most important collections of Fight Books and fencing manuals in the field of Historical European Martial Arts Studies (HEMAS). The Mokken Collection is named after Wiebe Mokken, the man who meticulously built it up over the past decades in Amsterdam. The book also highlights the glaring lack of contemporary knowlegde about other major historical fencing-related collections, like Gotti’s spectacular private collection held (...) at the Museo dell Arte Marziale in Brescia, Italy. Others, such as the Corble collection at the KU Leuven Libraries, recently published their catalogue on line. This catalogue thus constitutes an important milestone for this exciting and still relatively new subdomain in the field of European cultural studies, by making accessible one of the most important collections of source materials dedicated to it. (shrink)

An account of scientific explanation is presented according to which (1) scientific explanation consists in solving “insight” problems (Metcalfe and Wiebe 1984) and (2) understanding is the result of solving such problems. The theory is pragmatic; it draws upon van Fraassen’s (1977, 1980) insights, avoids the objections to pragmatic accounts offered by Kitcher and Salmon (1987), and relates scientific explanation directly to understanding. The theory also accommodates cases of explanatory asymmetry and intuitively legitimate rejections of explanation requests.