Knowledge-Wh

Epistemic burdens – the nature and extent of our ignorance (that and how) with respect to various courses of action – serve to determine our incentive structures. Courses of action that seem to bear impossibly heavy epistemic burdens are typically not counted as options in an actor’s menu, while courses of action that seem to bear comparatively heavy epistemic burdens are systematically discounted in an actor’s menu relative to options that appear less epistemically burdensome. That ignorance serves to determine what (...) counts as an option means that epistemic considerations are logically prior to moral, prudential, and economic considerations: in order to have moral, prudential, or economic obligations, one must have options, and epistemic burdens serve to determine our options. One cannot have obligations without doing some epistemic work. We defend this claim on introspective grounds. We also consider how epistemic burdens distort surrogate decision-making. The unique epistemology of surrogate cases makes the priority of the epistemic readily apparent. We then argue that anyone who accepts a principle similar to ought implies can is committed to the logical priority of the epistemic. We also consider and reject several possible counterarguments. -/- . (shrink)

How should we measure knowledge? According to the Counting Approach, we can measure knowledge by counting pieces of knowledge. Versions of the Counting Approach that try to measure knowledge by counting true beliefs with suitable support or by counting propositions known run into problems, stemming from infinite numbers of propositions and beliefs, difficulties in individuating propositions and beliefs, and cases in which knowing the same number of propositions contributes differently to knowledge. In this paper I develop a novel question-relative and (...) contextualist version of the counting approach, which measures an agent's knowledge by counting the number of complete answers of a contextually salient issue they can rule out. The question-relative and contextualist version of the Counting Approach avoids the issues for the proposition and belief-based systems, and offers a general, systematic, and explanatory system for measuring knowledge. (shrink)

When we say “I know why he was late”, we know not only the fact that he was late, but also an explanation of this fact. We propose a logical framework of “knowing why” inspired by the existing formal studies on why-questions, scientific explanation, and justification logic. We introduce the Kyi\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${{\mathcal {K}}{}\textit{y}}_i$$\end{document} operator into the language of epistemic logic to express “agent i knows why φ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} (...) \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\varphi $$\end{document}” and propose a Kripke-style semantics of such expressions in terms of knowing an explanation of φ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\varphi $$\end{document}. We obtain two sound and complete axiomatizations w.r.t. two different model classes depending on different assumptions about introspection. Finally we connect our logic with justification logic technically by providing an alternative semantics and an in-depth comparison on various design choices. (shrink)

This article discusses a kind of knowledge classifiable as knowledge-wh but which seems to defy analysis in terms of the standard reductive theory of knowledge-wh ascriptions, according to which they are true if and only if one knows that p, where this proposition is an acceptable answer to the wh-question ‘embedded’ in the ascription. Specifically, it is argued that certain cases of knowing what an experience is like resist such treatment. I argue that in some of these cases, one can (...) know that p, where an acceptable answer to the question ‘What’s the experience like?’ is that p, but where one does not know what the experience is like. This could point to the distinctiveness of this sort of knowledge. (shrink)

There has been recent epistemological interest as to whether knowledge is “transmitted” by testimony from the testifier to the hearer, where a hearer acquires knowledge “second-hand.” Yet there is a related area in epistemology of testimony which raises a distinct epistemological problem: the relation of understanding to testimony. In what follows, I am interested in one facet of this relation: whether/how a hearer can receive testimonial knowledge without fully understanding the content of the testimony? I use Thomas Aquinas to motivate (...) a case where, in principle, the content of received testimony cannot be understood but nevertheless constitutes knowledge. Aquinas not only argues that we can receive testimonial knowledge without understanding the content of that testimony, but that we have duties to do so in certain cases. (shrink)

It is often said that ‘what it is like’-knowledge cannot be acquired by consulting testimony or reading books [Lewis 1998; Paul 2014; 2015a]. However, people also routinely consult books like What It Is Like to Go to War [Marlantes 2014], and countless ‘what it is like’ articles and youtube videos, in the apparent hope of gaining knowledge about what it is like to have experiences they have not had themselves. This article examines this puzzle and tries to solve it by (...) appealing to recent work on knowing-wh ascriptions. In closing I indicate the wider significance of these ideas by showing how they can help us to evaluate prominent arguments by Paul [2014; 2015a] concerning transformative experiences. (shrink)

The debate about the nature of knowledge-how is standardly thought to be divided between intellectualist views, which take knowledge-how to be a kind of propositional knowledge, and anti-intellectualist views, which take knowledge-how to be a kind of ability. In this paper, I explore a compromise position—the interrogative capacity view—which claims that knowing how to do something is a certain kind of ability to generate answers to the question of how to do it. This view combines the intellectualist thesis that knowledge-how (...) is a relation to a set of propositions with the anti-intellectualist thesis that knowledge-how is a kind of ability. I argue that this view combines the positive features of both intellectualism and anti-intellectualism. (shrink)

Discussions of group knowledge typically focus on whether a group’s knowledge that p reduces to group members’ knowledge that p. Drawing on the cumulative reading of collective knowledge ascriptions and considerations about the importance of the division of epistemic labour, I argue what I call the Fragmented Knowledge account, which allows for more complex relations between individual and collective knowledge. According to this account, a group can know an answer to a question in virtue of members of the group knowing (...) parts of that answer, when the whole answer is available to group-level action. I argue that this account explains a swathe of central cases of group knowledge, as well as explaining some central features of group knowledge. (shrink)

According to a prominent account of knowledge-how, knowledge-how is a species of propositional knowledge. A related view has it that to know how to perform an action is for it to seem to one that a way to perform that action is in fact a way to do so. According to a further view, knowledge-how is a species of objectual knowledge. Each of these intellectualist views has significant virtues including, notably, the ability to account for the seemingly epistemic dimensions of (...) knowledge-how. However, while intellectualist views can account for the seemingly epistemic dimensions of knowledge-how, such views have difficulty accounting for the practical dimensions of knowledge-how. The objection I level against existing intellectualist views here seizes on this deficiency. I argue that, in virtue of the practical dimensions of knowledge-how, propositional knowledge under a practical mode of presentation is not sufficient for knowledge-how. Even when the sufficiency conditions for knowledge-how set out by extant intellectualist views are met, one may fail to know how to perform an action in virtue of a disposition to act on a false belief about a way for one to perform that action. Thus, whereas critics of intellectualist views often allege that such views place overly demanding conditions on knowledge-how, the objection developed here suggests that existing intellectualist views place insufficiently demanding conditions on knowledge-how. (shrink)

This is an introduction to the debate about Know-how.

This paper concerns connection between knowing or accepting a logical principle such as Modus Ponens and actions of reasoning involving it. Discussions of this connection typically mention the so-called ‘Lewis Carroll Regress’ and there is near consensus that the regress shows something important about it. Also, although the regress explicitly concerns logic, many philosophers think that it establishes a more general truth, about the structurally similar connection between epistemic or practical principles and actions involving them. This paper’s first aim is (...) to address key interpretations Carroll’s regress as clearly as possible so as to show precisely how it might be relevant to questions concerning the connection between logical knowledge and reasoning, and, more broadly, to discussions of how epistemic or practical principles may be action-guiding. Its second aim is to show that the regress fails to establish anything of substance about the connection between logical knowledge and reasoning, or any other structurally similar relation, unless substantive, contentious and typically undefended assumptions are made. The consensus is thus on shaky ground. (shrink)

We know facts, but we also know how to do things. To know a fact is to know that a proposition is true. But does knowing how to ride a bike amount to knowledge of propositions? This is a challenging question and one that deeply divides the contemporary landscape. A Critical Introduction to Knowledge-How introduces, outlines, and critically evaluates various contemporary debates surrounding the nature of knowledge-how. Carter and Poston show that situating the debate over the nature of knowledge-how in (...) other epistemological debates provides new ways to make progress. In particular, Carter and Poston explore the question of what knowledge-how involves, and how it might come apart from propositional knowledge, by engaging with key epistemological topics including epistemic luck, knowledge of language, epistemic value, virtue epistemology and social epistemology. New frontiers for research on knowledge-how are also explored relating to the internalism - externalism debate as well as embodied and extended knowledge. A Critical Introduction to Knowledge-How provides an accessible introduction to the main arguments in this important and thriving debate suited for undergraduates and postgraduates in philosophy and related areas. A strength of the book is its methodology which places a premium on placing the debates over knowledge-how in a broader conversation over the nature of knowledge. This book also offers an opinionated discussion of various lines of argument which will be of interest to professional philosophers as well. (shrink)

It has been widely accepted since Stanley and Williamson (2001) that the only linguistically acceptable semantic treatments for sentences of the form ‘S knows how to V’ involve treating the wh-complement ‘how to V’ as an interrogative phrase, denoting a set of propositions. Recently a number of authors have suggested that the ‘how to V’ phrase denotes not a proposition, but an object. This view points toward a prima facie plausible non-propositional semantics for knowledge-how, which treats ‘how to V’ as (...) a free relative noun phrase. In this paper I argue that the free relative semantics is implausible. I show that linguistic phenomena which seem to support a free relative semantics can be explained by the supporter of an interrogative semantics, and demonstrate that standard linguistic tests strongly suggest that ‘how to V’ has an interrogative reading, and no free relative reading. (shrink)

According to Intellectualism knowing how to V is a matter of knowing a suitable proposition about a way of V-ing. In this paper, I consider the question of which ways of acting might figure in the propositions which Intellectualists claim constitute the object of knowledge-how. I argue that Intellectualists face a version of the Generality Problem – familiar from discussions of Reliabilism – since not all ways of V-ing are such that knowledge about them suffices for knowledge-how. I consider various (...) responses to this problem, and argue that none are satisfactory. (shrink)

This is a précis of my book "Know-how as Competence. A Rylean Responsibilist Account".

This paper responds to comments and criticisms by Stefan Brandt and Eva-Maria Jung, directed at the book "Know-how as Competence. A Rylean Responsibilist Account".

A common approach to knowledge wh is to try to reduce it to knowledge that, and in particular to answer-knowledge. On this view, the truth-conditions of a knowledge wh ascription can be given entirely in terms of which answers to the embedded question the subject knows. Against this background, this paper considers the phenomenon of false-belief sensitivity --- a challenge to this common approach to knowledge wh that has recently received a fair amount of attention in the question embedding literature. (...) We present a series of experiments that help to bring the empirical standing of this phenomenon into focus. Across six experiments, our results provide evidence that truth judgments of knowledge wh ascriptions are affected by both the presence of false beliefs and the proportion of the subject's beliefs that are false. Collectively, these results demonstrate a pattern of judgments that is incompatible with standard accounts of the relationship between knowledge that and knowledge wh, and with reducibility more generally. After presenting these new data, we end by considering the theoretical implications of this richer descriptive picture and outline a number of remaining open questions that should be pursued in future work. (shrink)

There is considerable agreement among epistemologists that certain abilities are constitutive of understanding-why. These abilities include: constructing explanations, drawing conclusions, and answering questions. This agreement has led epistemologists to conclude that understanding is a kind of know-how. However, in this paper, I argue that the abilities constitutive of understanding are the same kind of cognitive abilities that we find in ordinary cases of knowledge-that and not the kind of practical abilities associated with know-how. I argue for this by disambiguating between (...) different senses of abilities that are too often lumped together. As a consequence, non-reductionists about understanding—those that claim that understanding-why is not reducible to knowledge-that—need to find another way to motivate the view. In the end, the fact that abilities are constitutive of understanding-why does not give us reason to conclude that understanding is a kind of know-how. (shrink)

Epistemic logic has become a major field of philosophical logic ever since the groundbreaking work by Hintikka [58]. Despite its various successful applications in theoretical computer science, AI, and game theory, the technical development of the field has been mainly focusing on the propositional part, i.e., the propositional modal logics of “knowing that”. However, knowledge is expressed in everyday life by using various other locutions such as “knowing whether”, “knowing what”, “knowing how” and so on (knowing-wh hereafter). Such knowledge expressions (...) are better captured in quantified epistemic logic, as was already discussed by Hintikka [58] and his sequel works at length. This paper aims to draw the attention back again to such a fascinating but largely neglected topic. We first survey what Hintikka and others did in the literature of quantified epistemic logic, and then advocate a new quantifier-free approach to study the epistemic logics of knowing-wh, which we believe can balance expressivity and complexity, and capture the essential reasoning patterns about knowing-wh. We survey our recent line of work on the epistemic logics of ‘knowing whether”, “knowing what” and “knowing how” to demonstrate the use of this new approach. (shrink)

Recent epistemology has focused almost exclusively on propositional knowledge. This paper considers an underexplored area of epistemology, namely knowledge of persons: if propositional knowledge is a state of mind, consisting in a subject's attitude to a (true) proposition, the account developed here thinks of interpersonal knowledge as a state of minds, involving a subject's attitude to another (existing) subject. This kind of knowledge is distinct from propositional knowledge, but it exhibits a gradability characteristic of context-sensitivity, and admits of shifty thresholds. (...) It is supported by a wide range of unexplored linguistic data and intuitive cases; and it promises to illuminate debates within epistemology, philosophy of religion, and ethics. (shrink)

Knowledge-how often appears to be more difficult to transmit by testimony than knowledge-that and knowledge-wh. Some philosophers have argued that this difference provides us with an important objection to intellectualism—the view that knowledge-how is a species of knowledge-that. This article defends intellectualism against these testimony-based objections.

The central and paradigmatic cases of knowledge discussed in philosophy involve the possession of truth. Is there in addition a distinct type of practical knowledge, which does not aim at the truth? This question is often approached through asking whether states attributed by “know-how” locutions are distinct from states attributed by “know-that”. This paper argues that the question of practical knowledge can be raised not only about some cases of “know-how” attributions, but also about some cases of so-called “know-wh” attributions; (...) and that certain features of this practical knowledge-wh put pressure on the standard analysis of know-wh. (shrink)

What does it mean to know how to do something? This book develops a comprehensive account of know-how, a crucial epistemic goal for all who care about getting things right, not only with respect to the facts, but also with respect to practice. It proposes a novel interpretation of the seminal work of Gilbert Ryle, according to which know-how is a competence, a complex ability to do well in an activity in virtue of guidance by an understanding of what it (...) takes to do so. This idea is developed into a full-fledged account, Rylean responsibilism, which understands know-how in terms of the normative guidance and responsible control of one's acts. Within the complex current debate about know-how, this view occupies a middle ground position between the intellectualist claim that know-how just is propositional or objectual knowledge and the anti-intellectualist claim that know-how just is ability. In genuine know-how, practical ability and guiding intellect are both necessary, but essentially intertwined. (shrink)

_Self-Reflection for the Opaque Mind_ attempts to solve a grave problem about critical self-reflection. Psychological studies indicate not just that we are bad at detecting our own "ego-threatening" thoughts; they also suggest that we are ignorant of even our ordinary thoughts. However, self-reflection presupposes an ability to know one’s own thoughts. So if ignorance is the norm, why attempt self-reflection? While admitting the psychological data, this book argues that we are infallible in a limited range of self-discerning judgments—that in some (...) cases, these judgments are self-fulfilling or self-verifying. Even so, infallibility does not imply indubitability, and the author does not wish to provide a "foundation" for empirical knowledge. The point is rather to explain how self-reflection as a rational activity is possible. The book will be of interest to scholars working on the issue of self-reflection across a wide range of disciplines, including philosophy, psychology, and cognitive science. (shrink)

Recent years witnessed a growing interest in non-standard epistemic logics of knowing whether, knowing how, knowing what, knowing why and so on. The new epistemic modalities introduced in those logics all share, in their semantics, the general schema of ∃x◻φ, e.g., knowing how to achieve φ roughly means that there exists a way such that you know that it is a way to ensure that φ. Moreover, the resulting logics are decidable. Inspired by those particular logics, in this work, we (...) propose a very general and powerful framework based on quantifier-free predicate language extended by a new modality, which packs exactly ∃x◻ together. We show that the resulting language, though much more expressive, shares many good properties of the basic propositional modal logic over arbitrary models, such as finite-tree-model property and van Benthem-like characterization w.r.t.\ first-order modal logic. We axiomatize the logic over S5 frames with intuitive axioms to capture the interaction between the new modality and know-that operator in an epistemic setting. (shrink)

We consider a range of cases—both hypothetical and actual—in which agents apparently know how to \ but fail to believe that the way in which they in fact \ is a way for them to \. These “no-belief” cases present a prima facie problem for Intellectualism about knowledge-how. The problem is this: if knowledge-that entails belief, and if knowing how to \ just is knowing that some w is a way for one to \, then an agent cannot both know (...) how to \ and fail to believe that w, the way that she \s, is a way for her to \. We discuss a variety of ways in which Intellectualists might respond to this challenge and argue that, ultimately, this debate converges with another, seemingly distinct debate in contemporary epistemology: how to attribute belief in cases of conflict between an agent’s avowals and her behavior. No-belief cases, we argue, reveal how Intellectualism depends on the plausibility of positing something like “implicit beliefs”—which conflict with an agent’s avowed beliefs—in many cases of apparent knowledge-how. While there may be good reason to posit implicit beliefs elsewhere, we suggest that there are at least some grounds for thinking that these reasons fail to carry over to no-belief cases, thus applying new pressure to Intellectualism. (shrink)

The entry is intended as an advanced introduction to the topic of knowledge-how. It starts with a list of overviews, monographs and collections, followed by selected 20th century discussions. The last two sections contain sources pertaining to Ryle's own work on the topic as well as work by other influential thinkers, and themes that are sometimes associated with knowledge-how. The remaining seven sections survey the contemporary literature on knowledge-how from three perspectives: (i) generic desiderata for accounts of knowledge-how, (ii) specific (...) topics that are already well-entrenched in the tradition of particular subdisciplines and (iii) second-order controversy regarding distinct assumptions and tools employed by the debaters. (shrink)

Know -wh ascriptions are ubiquitous in many languages. One standard analysis of know -wh is this: someone knows-wh just in case she knows that p, where p is an answer to the question included in the wh-clause. Additional conditions have also been proposed, but virtually all analyses assume that propositional knowledge of an answer is at least a necessary condition for knowledge-wh. This paper challenges this assumption, by arguing that there are cases where we have knowledge-wh without knowledge- that of (...) an answer, for example in the cases familiar from arguments for the Extended Mind hypothesis. (shrink)

In this article, we present an attempt to reconcile intellectualism and the anti-intellectualist ability account of knowledge-how by reducing “S knows how to F” to, roughly speaking, “S knows that she has the ability to F demonstrated by a concrete way w.” More precisely, “S has a certain ability” is further formalized as the proposition that S can guarantee a certain goal by a concrete way w of some method under some precondition. Having the knowledge of our own ability, we (...) can plan our future actions accordingly, which would not be possible by merely having the ability without knowing it, and this pinpoints the crucial difference between knowledge-how and ability. Our semi-formal account avoids most of the objections to both intellectualism and the anti-intellectualist ability account, and provides a multistage learning process of knowledge-how, which reveals various subtleties. (shrink)

In this paper, I offer a novel account of knowledge ascriptions with concealed questions as complements. I begin by discussing various theories of knowledge-the proposed in the literature and raising some problems for each. I then present and explain my positive proposal, arguing that knowledge ascriptions with concealed questions as complements say that the subject stands in the knowledge relation to a question. I claim that this view avoids the problems facing other accounts and offers a unified account of knowledge-the, (...) knowledge-wh, and, importantly, other attitudes with interrogative complements. On this account, when we utter any attitude ascription that contains an explicit question, an indirect question, or a concealed question, we say that some subject stands in the relevant relation to a question. (shrink)

The purpose of this paper is to demonstrate that narrative representations can provide knowledge in virtue of their narrativity, regardless of their truth value. I set out the question in section 1, distinguishing narrative cognitivism from aesthetic cognitivism and narrative representations from non-narrative representations. Sections 2 and 3 argue that exemplary narratives can provide lucid phenomenological knowledge, which appears to meet both the epistemic and narrativity criteria for the narrative cognitivist thesis. In section 4, I turn to non-narrative representation, focusing (...) on lyric poetry as presenting a disjunctive objection: either lucid phenomenological knowledge can be reduced to identification and fails to meet the epistemic criterion, or lucid phenomenological knowledge is provided in virtue of aesthetic properties and fails to meet the narrativity criterion. I address both of these problems in sections 5 and 6, and I close with a tentative suggestion as to how my argument for narrative c.. (shrink)

Intellectualism about knowledge-how is the view that practical knowledge is a species of propositional knowledge. I argue that this view is undermined by a difference in properties between knowledge-how and both knowledge-that and knowledge-wh. More specifically, I argue that both knowledge-that and knowledge-wh are easily transmitted via testimony while knowledge-how is not easily transmitted by testimony. This points to a crucial difference in states of knowledge. I also consider Jason Stanley's attempt to subsume knowledge-how under an account of de se (...) knowledge. I argue that there are crucial differences between de se knowledge and knowledge-how. Thus, this paper advances both the discussion of intellectualism and the literature on the nature of de se knowledge. (shrink)

According to reductive intellectualism, knowledge-how just is a kind of propositional knowledge (e.g., Stanley & Williamson 2001; Stanley 2011a, 2011b; Brogaard, 2008a, 2008b, 2009, 2011, 2009, 2011). This proposal has proved controversial because knowledge-how and propositional knowledge do not seem to share the same epistemic properties, particularly with regard to epistemic luck. Here we aim to move the argument forward by offering a positive account of knowledge-how. In particular, we propose a new kind of anti-intellectualism. Unlike neo-Rylean anti-intellectualist views, according (...) to which the possession of knowledge-how is just a matter of possessing certain abilities, we submit that knowledge-how is a particular kind of cognitive achievement attained just when cognitive ability is connected in the right way with successful performance. (shrink)

A proposition is noncontingent, if it is necessarily true or it is necessarily false. In an epistemic context, ‘a proposition is noncontingent’ means that you know whether the proposition is true. In this paper, we study contingency logic with the noncontingency operator? but without the necessity operator 2. This logic is not a normal modal logic, because?→ is not valid. Contingency logic cannot define many usual frame properties, and its expressive power is weaker than that of basic modal logic over (...) classes of models without reflexivity. These features make axiomatizing contingency logics nontrivial, especially for the axiomatization over symmetric frames. In this paper, we axiomatize contingency logics over various frame classes using a novel method other than the methods provided in the literature, based on the ‘almost-definability’ schema AD proposed in our previous work. We also present extensions of contingency logic with dynamic operators. Finally, we compare our work to the related work in the fields of contingency logic and ignorance logic, where the two research communities have similar results but are apparently unaware of each other’s work. One goal of our paper is to bridge this gap. (shrink)

Some worry that semantic externalism is incompatible with knowing by introspection what content your thoughts have. In this paper, I examine one primary argument for this incompatibilist worry, the slow-switch argument. Following Goldberg , I construe the argument as attacking the conjunction of externalism and “skeptic immune” knowledge of content, where such knowledge would persist in a skeptical context. Goldberg, following Burge :649–663, 1988), attempts to reclaim such knowledge for the externalist; however, I contend that all Burge-style accounts vindicate that (...) a subject can introspectively know that she is thinking that “water is wet.” They do not yet show how a subject can introspectively know what she is thinking—which is the distinctive type of knowing at issue in the slow-switch argument. Nonetheless, I subsequently amend the Burge-style view to illustrate how an externalist can introspectively “know-what” content her thought has, and know it in a skeptic immune manner, despite what the slow-switch argument may suggest. For one, I emphasize that “knowing what” can be ontologically non-committal . For another, following Boer and Lycan , I stress that “knowing what” is purpose-relative–and for at least some purposes, it seems possible for the externalist to “know what” content her thought has, even if skeptical hypotheses about XYZ are relevant. (shrink)

In this essay, I provide a new argument for Intellectualism about knowing how, one that does not rest on controversial assumptions about how knowing how is ascribed in English. In particular, I argue that the distinctive intentionality of the manifestations of knowing how ought to be explained in terms of a propositional attitude of belief about how to perform an action.

Many epistemologists have been attracted to the view that knowledge-wh can be reduced to knowledge-that. An important challenge to this, presented by Jonathan Schaffer, is the problem of “convergent knowledge”: reductive accounts imply that any two knowledge-wh ascriptions with identical true answers to the questions embedded in their wh-clauses are materially equivalent, but according to Schaffer, there are counterexamples to this equivalence. Parallel to this, Schaffer has presented a very similar argument against binary accounts of knowledge, and thereby in favour (...) of his alternative contrastive account, relying on similar examples of apparently inequivalent knowledge ascriptions, which binary accounts treat as equivalent. In this article, I develop a unified diagnosis and solution to these problems for the reductive and binary accounts, based on a general theory of knowledge ascriptions that embed presuppositional expressions. All of Schaffer's apparent counterexamples embed presuppositional expressions, and once the effect of these is taken into account, it becomes apparent that the counterexamples depend on an illicit equivocation of contexts. Since epistemologists often rely on knowledge ascriptions that embed presuppositional expressions, the general theory of them presented here will have ramifications beyond defusing Schaffer's argument. (shrink)

For Bhartrhari, a fifth-century Indian grammarian-philosopher, all conscious beings—beasts, birds and humans—are capable of what he called pratibha, a flash of indescribable intuitive understanding such that one knows what the present object “means” and what to do with it. Such an understanding, if correct, amounts to a mode of knowing that may best be termed knowing-what, to distinguish it from both knowing-that and knowing-how. This paper attempts to expound Bhartrhari’s conception of pratibha in relation to the notions of meaning, understanding, (...) and knowing. First, I touch briefly on Bhartrhari’s views of consciousness and language, and examine at some length his indescribability thesis concerning the intuitive meaning of a sentence. Then, I delineate the general features of pratibha as intuitive understanding and discuss its probable range in relation to expert intuition and sense perception. Thereafter, I relate pratibha to the notion of knowing-what and show why these two notions are to be differentiated from knowing-that and knowing-how. The paper concludes with some remarks on the contemporary relevance of Bhartrhari’s conception of pratibha. (shrink)

Do you know who you are? If the question seems unclear, it might owe to the notion of ‘knowing-wh’ (knowing-who, knowing-what, knowing-when, etc.). Such knowledge contrasts with ‘knowing-that’, the more familiar topic of epistemologists. But these days, knowing-wh is receiving more attention than ever, and here we will survey three current debates on the nature of knowing-wh. These debates concern, respectively, (1) whether all knowing-wh is reducible to knowing-that (‘generalized intellectualism’), (2) whether all knowing-wh is relativized to a contrast proposition (...) (‘contrastivism about knowing-wh’), and (3) whether the context-sensitivity of knowing-wh is a semantic or purely pragmatic phenomenon (‘contextualism vs. invariantism about knowing-wh’). (shrink)

The paper examines the logic and semantics of knowledge attributions of the form “s knows whether A or B”. We analyze these constructions in an epistemic logic with alternative questions, and propose an account of the context-sensitivity of the corresponding sentences and of their presuppositions.

In this paper I argue that there is a class of attitudes that have questions (rather than propositions or something else) as contents.

This paper argues for Propositionalism about knowing-how (also known as Intellectualism). On this view, knowing how to G reduces to propositional knowledge. It argues for this view without relying on contemporary theories of the semantics of interrogatives. It answers various objections.

Concealed questions are determiner phrases that are naturally paraphrased as embedded questions (e.g., John knows the capital of Italy ≈ John knows what the capital of Italy is). This paper offers a novel account of the interpretation of concealed questions, which assumes that an entity-denoting expression α may be type-shifted into an expression ?z.P(α), where P is a contextually determined property, and z ranges over a contextually determined domain of individual concepts. Different resolutions of P and the domain of z (...) yield a wide range of concealed question interpretations, some of which were not noted previously. On the other hand, principled constraints on the resolution process prevent overgeneration. (shrink)

In this book, Ilhan Inan questions the classical definition of curiosity as _a desire to know._ Working in an area where epistemology and philosophy of language overlap, Inan forges a link between our ability to become aware of our ignorance and our linguistic aptitude to construct terms referring to things unknown. The book introduces the notion of inostensible reference. Ilhan connects this notion to related concepts in philosophy of language: knowledge by acquaintance and knowledge by description; the referential and the (...) attributive uses of definite descriptions; the _de re/de dicto_ distinction; and Kripke’s distinction between rigid and accidental designators. Continuing with a discussion of the conditions for curiosity and its satisfaction, Inan argues that the learning process—starting in curiosity and ending in knowledge—is always an effort to transform our inostensible terms into ostensible ones. A contextual account is adopted for the satisfaction of curiosity. It then discusses the conditions of successful reference to the object of curiosity and its presuppositions. The book concludes with a discussion on the limits of curiosity and its satisfaction. (shrink)

Chapter 1: Ryle on Knowing How Chapter 2: Knowledge-wh Chapter 3: PRO and the Representation of First-Person Thought Chapter 4: Ways of Thinking Chapter 5: Knowledge How Chapter 6: Ascribing Knowledge How Chapter 7: The Cognitive Science of Practical Knowledge Chapter 8: Knowledge Justified Preface A fact, as I shall use the term, is a true proposition. A proposition is the sort of thing that is capable of being believed or asserted. A proposition is also something that is characteristically the (...) kind of thing that is true or false; that snow is white is a true proposition, that Barack Obama is President of the United States as I am writing these words is another. Facts in this sense are not only among the things we believe and assert; they are also the kinds of things we know. The thesis of this book is that knowing how to do something is the same as knowing a fact. It follows that learning how to do something is learning a fact. For example, when you learned how to swim, what happened is that you learned some facts about swimming. Knowledge of these facts is what gave you knowledge of how to swim. Something similar occurred with every other activity that you now know how to do, such as riding a bicycle or cooking a meal. You know how to perform activities solely in virtue of your knowledge of facts about those activities. (shrink)

We discuss the 'problem of convergent knowledge', an argument presented by J. Schaffer in favour of contextualism about knowledge attributions, and against the idea that knowledge- wh can be simply reduced to knowledge of the proposition answering the question. Schaffer's argument centrally involves alternative questions of the form 'whether A or B'. We propose an analysis of these on which the problem of convergent knowledge does not arise. While alternative questions can contextually restrict the possibilities relevant for knowledge attributions, what (...) Schaffer's puzzle reveals is a pragmatic ambiguity in what 'knowing the answer' means: in his problematic cases, the subject knows only a partial answer to the question. This partial knowledge can be counted as adequate only on externalist grounds. (shrink)

Various authors have attempted to understand knowledge-wh—or knowledge ascriptions that include an interrogative complement. I present and explain some of the analyses offered so far and argue that each view faces some problems. I then present and explain a newanalysis of knowledge-wh that avoids these problems and that offers several other advantages. Finally I raise some problems for invariantism about knowledge-wh and I argue thatcontextualism about knowledge-wh fits nicely with a very natural understanding of the nature of questions.