Knowledge by Acquaintance

ABSTRACT Given the complexity of the Cosmos, and of the contingent observer, it is axiomatic that the obverse of the law of identity includes a complex reverse: a thing not only is only what it is, it also is not all those things which it is not. But, given the possible combinations of knowledge and ignorance regarding a given topic, any number of various conflations of the two sides of this axiom is possible regarding that topic. Further, given the extent (...) of ignorance possible regarding a topic, the extent of this conflation can be so deep that a person may have a virtually unlimited body of 'logic' upon which to seem to confirm the sense that a favored position is sound. Moreover, given the demands and rewards of the practical epistemological algorithms in which we continually are engaged, much of the a priori knowledge on which such algorithms are based is obscured. As one of the most a priori conceptions, omnipotence, divine or otherwise, is especially opaque. Abraham Lincoln said if you want to test a person’s character, you can’t do so simply by making him suffer, but by giving him power. Logic is a power to know or prove things; but, what a person is in the habit of most valuing informs all his logic. Divine omnipotence is defined as essentially primary, creative, and immediately coherent. But, a more-or-less pressing concern for cognitive efficiency, combined with a psychologically adversarial response to a world of disharmony and progressive entropy, impels us to re-conceptualize omnipotence in terms of a notion which, by being logically indifferent to the relations of effects to their causes, is 'epistemologically adverse' to any positive concept of power. (shrink)

Russell (1911/12) argued that perceptual experience grounds a species of non-propositional knowledge, “knowledge by acquaintance,” and in recent years, this account of knowledge has been gaining traction. I defend on its basis a connection between moral and epistemic failure. I argue, first, that insufficient concern for the suffering of others can be explained in terms of an agent’s lack of acquaintance knowledge of another’s suffering, and second, that empathy improves our epistemic situation. Empathic distress approximates acquaintance with another’s suffering, and (...) empathic agents who are motivated to help rather than disengage exhibit an important epistemic virtue: a variety of intellectual courage. A key upshot is that an independently motivated account of the structure and significance of perceptual experience is shown to provide theoretical scaffolding for understanding a famously elusive idea in ethics—namely, that the failure to help others stems from a kind of ignorance of their situation. (shrink)

Perceptually secured knowledge consists of beliefs that amount to knowledge just because they are based on suitable perceptual states. Relationism about the ground of perceptually secured knowledge is the view that if a perceptual state can make a belief based on it amount to knowledge, then it can do that because it constitutes an appropriate kind of relational state, e.g., a state of perceptual acquaintance. I explore the prospects of both maintaining that some beliefs amount to perceptually secured knowledge and (...) developing a relationist account of their ground. (shrink)

You can be convinced that something is true but still desire to see it for yourself. A trusted critic makes some observations about a movie, now you want to watch it with them in mind. A proof demonstrates the validity of a formula, but you are not satisfied until you see how the formula works. In these cases, we place special value on knowing by what Sosa (2021) calls “firsthand insight” a truth that we might already know in some other (...) way such as by testimony, the balance of evidence, or proof. This phenomenon raises two questions. First, what is the nature of firsthand insight? Second, what value motivates us to pursue firsthand insight when other kinds of knowledge are readily available? In the two central parts of this paper, I develop answers to these questions. I argue that firsthand insight that a proposition is true is knowledge based on experience of what makes that proposition true, and I argue that desires for firsthand insight are motivated by concerns with alienation. In a concluding section, I briefly illustrate how the resulting view of the nature and value of firsthand insight might bear on broader topics in the theory of value. (shrink)

I develop and defend a sense-datum theory of perception. My theory follows the spirit of classic sense-datum theories: I argue that what it is to have a perceptual experience is to be acquainted with some sense-data, where sense-data are private particulars that have all the properties they appear to have, that are common to both perception and hallucination, that constitute the phenomenal characters of perceptual experiences, and that are analogous to pictures inside one’s head. But my theory also diverges from (...) conventional sense-datum theories in some key respects: on my view, (1) sense-data are first-person presentations of neural states, (2) the sensational qualities of sense-data differ in kind from the sensible qualities of external objects, and (3) sense-data are the vehicles in virtue of which we perceive, rather than the objects that we perceive. I argue that this package of claims is appropriately labeled ‘sense-datum theory’, and that the resultant view ought to be a live contender in contemporary philosophy of perception. (shrink)

The paper discusses five conceptions of knowledge present in texts traditionally associated with the thought of such thinkers as Kongzi, Mozi, Mengzi, Xunzi, Laozi, Zhuangzi, and Hanfeizi. The first three maps onto conceptions of knowledge familiar to contemporary ears: skill knowledge (knowing-how), propositional knowledge (knowing-that) and objectual knowledge (knowing by acquaintance); while the next two map onto less commonly discussed conceptions of knowledge: motivational knowledge (knowing-to) and applied knowledge (knowing-how-to). The discussion aims to complement existing projects in the literature that (...) look at related issues more explicitly from the standpoint of the ‘native’ concepts. The paper concludes with some comments on the early Chinese philosophical concerns with knowledge and its relation to broader conceptions of ‘philosophical’ projects. (shrink)

Many philosophers believe that aesthetic testimony can provide aesthetic knowledge. This leaves us with the question: why does getting aesthetic knowledge by experience – by seeing a painting up close, or witnessing a performance first-hand – nevertheless seem superior to aesthetic testimony? I argue that it is due to differences in their epistemic value; in the diversity of epistemic goods each one provides. Aesthetic experience, or the experience of art or other aesthetic objects, affords multiple, distinctive epistemic goods whereas aesthetic (...) testimony affords less. In particular, it provides aesthetic knowledge of truths, a kind of propositional knowledge, as well as aesthetic knowledge of things, a kind of non-propositional knowledge. Although aesthetic experience is superior because it has more epistemic value, this doesn’t mean that aesthetic testimony provides weaker justification for aesthetic belief than aesthetic experience; the difference is evaluative, not normative. In this way, we can explain a key pessimistic intuition about aesthetic testimony – that it is inferior to aesthetic experience – whilst preserving the optimistic view that aesthetic testimony makes aesthetic knowledge available to others. The superior epistemic value of first-hand aesthetic experience is compatible with a number of important observations about aesthetic testimony, including the importance of aesthetic trust. (shrink)

What is it to know someone? Epistemologists rarely take up this question, though recent developments make such inquiry possible and desirable. This paper advances an account of how such interpersonal knowledge goes beyond mere propositional and qualitative knowledge about someone, giving a central place to second-personal treatment. It examines what such knowledge requires, and what makes it distinctive within epistemology as well as socially. It assesses its theoretic value for several issues in moral psychology, epistemic injustice, and philosophy of mind. (...) And it offers an account of the complex content in play if interpersonal knowledge is to be understood in terms of its mental states and their functions. (shrink)

The kind of empathy that is communicated through expressions like “I feel your pain” or “I share your sadness” is important, but peculiar. For it seems to require something perplexing and elusive: sharing another’s experience. It’s not clear how this is possible. We each experience the world from our own point of view, which no one else occupies. It’s also unclear exactly why it is so important that we share others' pains. If you are in pain, then why should it (...) matter, and be a good thing, that I am also in the same pain? Our goal in this paper is to address these questions. Specifically, our goal is to clarify how empathy, in the regimented sense of sharing another’s pain, is possible and why it is important. Central to our account is the concept of being acquainted with—that is, directly aware of—pain. When I feel my own pain, and am acquainted with it, I want the pain to stop, and I’m moved—sometimes compelled—to stop it. My acquaintance with the pain is what reveals that it is no good, to be gotten rid of, and to be avoided in the future. Acquaintance also appears to be implicated in our understanding of, and motivation to relieve, others’ pains. When I say “I feel your pain” I express an awareness of your pain, a direct appreciation of its noxious qualities, and, as with my own pain, an understanding of why it ought to be eased. Explaining how empathy is both possible and important therefore involves clarifying the nature of acquaintance: its limits, epistemic role, and motivational significance. What our analysis reveals is that agents have both epistemic and moral reasons to share other people’s pain because pain-sharing is the source of a species of character-building knowledge that we have no other way of accessing except through direct acquaintance with pain. (shrink)

This book examines a main theme in religious epistemology, namely, the possibility of knowledge of God. Most often philosophers consider the rationality or justification of propositional belief about God, particularly beliefs about the existence and nature of God; and they will assess the conditions under which, if there is a God, such propositional beliefs would be knowledge, particularly in light of counter-evidence or the availability of religious disagreement. This book surveys such familiar areas, then turns toward newer and less-developed terrain: (...) interpersonal epistemology, namely what it is to know another person. It then explores the prospects for understanding what it might take to know God relationally, the contours of which are significant for many theistic traditions. (shrink)

What kind of knowledge does one have when one knows what it is like to, say, fall in love, eat vegemite™, be a parent, or ride a bike? This Element addresses this question by exploring the tension between two plausible theses about this form of knowledge: (i) that to possess it one must have had the corresponding experience, and (ii) that to possess it one must know an answer to the 'what it is like' question. The Element shows how the (...) tension between these two theses helps to explain existing debates about this form of knowledge, as well as puzzling conflicts in our attitudes towards the possibility of sharing this knowledge through testimony, or other sources like literature, theories, and simulations. The author also offers a view of 'what it is like' knowledge which can resolve both the tension between (i) and (ii), and these puzzles around testimony. (shrink)

Wilfrid Sellars’ “myth of the given” had a momentous influence on 20th-century epistemology, putting under pressure the internalist foundationalism so prominent in early analytic philosophy. In this paper, I argue that the core themes in Sellars’ argument are anticipated in the work of the London philosopher and psychologist Beatrice Edgell (1871-1948). Indeed, in some respects Edgell’s argument against the myth of the given is even more compelling than Sellars’. The paper logically reconstructs and historically contextualizes Edgell’s line of argument, as (...) emerging out of a critique of Russell’s epistemology, with the goal of showing that the “myth of the given” effectively predated Sellars by four decades. (shrink)

Bertrand Russell’s epistemology had the interesting structural feature that it made propositional knowledge (“S knows that p”) asymmetrically dependent upon what Russell called knowledge by acquaintance. On this view, a subject lacking any knowledge by acquaintance would be unable to know that p for any p. This is something that virtually nobody has defended since Russell, and in this paper I initiate a sympathetic reconsideration.

Is knowledge a uniform kind? If not, what relation do the different kinds of knowledge bear to one another? Is there a central notion of knowledge which other kinds of knowledge must be understood in terms of? In this paper, I use Aristotle’s theory of homonyms as a framework to make progress on these questions. I argue that knowledge is not a uniform kind but rather a core-dependent homonym. To demonstrate this, I focus on knowledge by acquaintance. I argue that (...) the principles that govern propositional knowledge cannot govern knowledge by acquaintance. I then develop analogue principles for knowledge by acquaintance and show why, despite their different modal profiles, knowledge by acquaintance is nevertheless a form of knowledge. I then show that the analysis of propositional knowledge fundamentally depends on knowledge by acquaintance. (shrink)

Recently, there has been a renaissance of study on knowledge by acquaintance. One reason for this is that many writers believe acquaintance holds the key to understanding consciousness and our conscious experience of the world. For this reason, research on acquaintance has been primarily focused on perception and self-knowledge. While these questions are undoubtedly important, I believe being overly focused on these issues has prevented a defensible theory of knowledge by acquaintance from being developed. In particular, two questions have largely (...) been ignored in the literature. First, what kind of knowledge is knowledge by acquaintance? If knowledge by acquaintance is supposed to give us special epistemic access to its objects, what are the central epistemic features of it and how do they differ from other kinds of knowledge? Second, can we have knowledge by acquaintance beyond cases of perception and self-knowledge, and if so, how? In this dissertation, I answer both of these questions. In response to the first question, I argue that knowledge by acquaintance is a form of non-propositional discriminatory knowledge. Roughly, discriminatory knowledge is the exercise of a discriminatory capacity to single out a particular object from other objects of its kind. It is non-propositional because the object of the mental act of discriminating is not a proposition or truth. It is important that we understand knowledge by acquaintance in terms of discriminatory knowledge because it allows us to move beyond perceptual knowledge and self-knowledge. In this dissertation, I show how this is possible by showing that we can be acquainted with the natural numbers. This provides an answer to the second question. There is, in principle, no reason why acquaintance should only exist in sensory perception, provided we understand it in terms of discriminatory knowledge. The upshot of this is that my account of knowledge by acquaintance has a breadth and unity not often found in the acquaintance literature. (shrink)

The concept of autonomy is central to many debates in aesthetics. However, exactly what it means to be autonomous in our aesthetic engagements is somewhat unclear in the philosophical literature. The normative significance of autonomy is also unclear and hotly debated. In this essay, I propose a method for clarifying this elusive concept by distinguishing three distinct senses or varieties of aesthetic autonomy: experiential autonomy, competence-based autonomy, and personal autonomy. On this taxonomy autonomy is a context-sensitive concept and autonomy applies (...) to several different moments or stages of aesthetic appreciation. Throughout this critical discussion, important issues concerning the nature of aesthetic appreciation are also explored. (shrink)

This paper will be concerned with the role acquaintance plays in contemporary theories of introspection. Traditionally, the relation of acquaintance has been conceived in analytic epistemology and philosophy of mind as being only epistemically relevant inasmuch as it causes, or enables, or justifies a peculiar kind of propositional knowledge, i.e., knowledge by acquaintance. However, in recent years a novel account of the role of acquaintance in our introspective knowledge has been offered. According to this novel constitutive approach, acquaintance is, in (...) itself, a sui generis—i.e., non-propositional—kind of knowledge. As we will suggest, a stalemate between David Chalmers’ account of direct phenomenal concepts—as a prototypical example of a causal view—and Anna Giustina’s account of primitive introspection—as a prototypical example of a constitutive view—is looming in the current controversy between the two families of theories. Towards the end of the essay, we will point to some possible ways for a constitutive theorist to break the stalemate. (shrink)

Maria Rosa Antognazza's work has issued a historical challenge to the thesis that the analysis of knowledge (as justified true belief) attacked by epistemologists from Gettier onwards was indeed the standard view traditionally upheld from Plato onwards. This challenge led to an ongoing reappraisal of the historical significance of intuitive knowledge, in which the knower is intimately connected to what is known. Such traditional accounts of intuition, and their accompanying claims to epistemological primacy, constituted the precise target of Moritz Schlick's (...) critique. Schlick engages with this topic throughout his oeuvre, from some of his early epistemological writings, to his anti-metaphysical stance as a leading Logical Empiricist. Schlick crucially distinguishes knowledge from mere acquaintance, denying that the latter has epistemic status. He therefore argues that the very notion of ‘intuitive knowledge’ is a contradictio in adjecto. (shrink)

Leading philosophical models of curiosity represent it as a desiderative attitude whose content is a question, and which is satisfied by knowledge of the answer to that question. I argue that these models do not capture the distinctive character of a form of curiosity that I call 'erotic curiosity'. Erotic curiosity addresses itself not to a question but to an object whose significance for the inquirer is affective as well as epistemic. This form of curiosity is best understood by analogy (...) to erotic love as theorized by Plato in the Symposium. (shrink)

On a Cartesian conception of the mind, I could be a solitary being and still have the same mental states as I currently have. This paper asks how the lives of other people fit into this conception. I investigate the second-person perspective—thinking of others as ‘you’ while engaging in reciprocal communicative interactions with them—and argue that it is neither epistemically nor metaphysically distinctive. I also argue that the Cartesian picture explains why other people are special: because they matter not just (...) for the effect that they have on us. (shrink)

In this paper, I develop a new version of the acquaintance view of the nature of introspection of phenomenal states. On the acquaintance view, when one introspects a current phenomenal state of one's, one bears to it the relation of introspective acquaintance. Extant versions of the acquaintance view neglect what I call the phenomenal modification problem. The problem, articulated by Franz Brentano in his Psychology from an Empirical Standpoint, is that drawing introspective attention to one's current conscious experience may modify (...) its phenomenology. Failing to take phenomenal modification into account affects the adequacy of extant versions of the acquaintance view. The purpose of this paper is to develop a better version, the integration account, that meets the phenomenal modification challenge while preserving the merits of other versions. (shrink)

This paper argues that knowledge of what it’s like varies along a spectrum from more exact to more approximate, and that phenomenal concepts vary along a spectrum in how precisely they characterize what it’s like to undergo their target experiences. This degreed picture contrasts with the standard all-or-nothing picture, where phenomenal concepts and phenomenal knowledge lack any such degreed structure. I motivate the degreed picture by appeal to (1) limits in epistemic abilities such as recognition, imagination, and inference, and (2) (...) the semantics of ‘knows what it’s like’ expressions. I argue that approximate phenomenal knowledge cannot be explained merely via determinable or vague phenomenal concepts. I develop a framework for systematizing approximate knowledge of phenomenal character. And I explain how my view challenges some standard assumptions about the acquisition conditions, requirements for mastery, and referential mechanisms of phenomenal concepts. (shrink)

Although meritorious, Naïve Realism faces theoretical issues stemming from the lack of clarity in the concepts forming its propositions and the relevant (but not usually acknowledged) diversity of its theses. In this paper, my goal is to provide a groundwork that mitigates these theoretical complications. One such distinction concerns its subject matter, in particular, whether it deals with the nature of perceptual episodes or their phenomenology. My first goal is to acknowledge such distinctions by delimiting the former option, which I (...) refer to as “Ontological Naïve Realism”. To accomplish this, I proposed a distinctively minimal version of this position. However, a thorough characterization of the acquaintance relation was necessary for its postulation, which revealed a diversity of the corresponding relations/predicates. This informed the postulation of the minimal thesis and thus the definition of Ontological Naïve Realism. Based on this definition, I also proposed a novel classification and taxonomy of the relevant forms of Ontological Naïve Realism, based on the width of the attribution of naïve-realistic features and whether or not they identify perceptions/illusions to acquaintance instantiations. (shrink)

Paul (2014, 2015a) argues that one cannot rationally decide whether to have a transformative experience by trying to form judgments, in advance, about (i) what it would feel like to have that experience, and (ii) the subjective value of having such an experience. The problem is if you haven’t had the experience then you cannot know what it is like, and you need to know what it is like to assess its value. However, in earlier work I argued that ‘what (...) it is like’-knowledge comes in degrees, and I briefly suggested that, consequently, some instances of Paul’s argument schema might commit a fallacy of equivocation. The aim of this paper is to further explore and strengthen this objection by, first, offering a new argument—the modelling argument—in support of it, and then by evaluating a range of replies that might be given to this objection on Paul’s behalf. I conclude that each reply either fails or, at best, only partially succeeds in defending some but not all instances of Paul’s argument schema. In closing, I consider how we might revise Paul’s concepts of transformative experiences and choices in response to this conclusion. (shrink)

Introspective knowledge by acquaintance is knowledge we have by being directly aware of our phenomenally conscious states. In this paper, I argue that introspective knowledge by acquaintance is a sui generis kind of knowledge: it is irreducible to any sort of propositional knowledge and is wholly constituted by a relationship of introspective acquaintance. My main argument is that this is the best explanation of some epistemic facts about phenomenal consciousness and introspection. In particular, it best explains the epistemic asymmetry between (...) a subject who has never had a certain phenomenal state and one who has. I also consider two theoretical objections to my claim: an objection from disunity and an objection from mysteriousness. I show that these objections can be answered and that introspective knowledge by acquaintance being sui generis remains a live option on the table. (shrink)

Imagine a zombie world that looks “from the outside” just like ours, but where there is no phenomenal consciousness. Creatures that look like us move about just as we do and make the same noises we do, but nobody experiences or feels anything. How much of the epistemic value that’s exemplified in our world survives in that one? The short answer is: any kind of epistemic value that requires the occurrence of consciousness for its exemplification cannot exist in that world, (...) but epistemic value that doesn’t require consciousness can exist. The real question, though, is what kinds of epistemic value require the occurrence of consciousness. We will consider four central epistemic values: justification, truth, acquaintance, and understanding. (shrink)

In a few short paragraphs of The Problems of Philosophy Bertrand Russell presents his theory of introspective knowledge based on the concept of knowledge by acquaintance. In this article, I critically analyze these comments by Russell and their proposed application by contemporary authors, including Brie Gertler (2001; 2011) and Laurence BonJour (2003). I show how these theories differ from the competing ‘inner‑sense theories’ and try to show that they are inconsistent with Gareth Evans’s ‘transparency’ observation. Then I compare acquaintance theories (...) with Alex Byrne’s (2005; 2012) ‘transparency’ theory and show that Byrne’s theory offers a simpler account of mechanisms governing introspection and attribution of mental states to other agents. The AAM version available on PhilPapers iis licensed under CC BY 4.0. (shrink)

Why think that conscious experience of reality is any more epistemically valuable than testimony about it? I argue that conscious experience of reality is epistemically valuable because it provides cognitive contact with reality. Cognitive contact with reality is a goal of experiential inquiry which does not reduce to the goal of getting true beliefs or propositional knowledge. Such inquiry has awareness of the truth-makers of one’s true beliefs as its proper goal. As such, one reason why conscious experience of reality (...) is more epistemically valuable than testimony about reality is that it gives us more epistemic goods than only true belief or propositional knowledge. I defend this view from two rival accounts. First, that while conscious experience of reality has greater value than testimony, its value is only eudaimonic. Second, that while it has greater epistemic value than testimony, this value is not distinctive: for it only promotes truth better than testimony. (shrink)

The Cartesian thesis that some justifications are infallible faces a gradation puzzle. On the one hand, infallible justification tolerates absolutely no possibility for error. On the other hand, infallible justifications can vary in evidential force: e.g. two persons can both be infallible regarding their pains while the one with stronger pain is nevertheless more justified. However, if a type of justification is gradable in strength, why can it always be absolute? This paper explores the potential of this gradation challenge by (...) rejecting Fumerton's recent ‘semantic decision' solution. On Fumerton's suggestion, the putative gradation of infallible justifications is essentially semantic. It concerns only how we use the relevant term but not how well we perceive the truth. Regardless of its intuitive appeal, Fumerton's solution does not cover all the related situations. There is an irreducibly epistemic sense in which infallible justifications vary in degrees. (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)

This paper asks whether phenomenal intentionality (intentionality that arises from phenomenal consciousness alone) has a relational structure of the sort envisaged in Russell’s theory of acquaintance. I put forward three arguments in favor of a relation view: one phenomenological, one linguistic, and one based on the view’s ability to account for the truth conditions of phenomenally intentional states. I then consider several objections to the relation view. The chief objection to the relation view takes the form of a dilemma between (...) Platonic and Aristotelian conceptions of the properties constitutive of the contents of phenomenally intentional states on this view: the Aristotelian view seems unable to account for all the apparent contents of phenomenally intentional states, but the Platonic view seems to be ontologically unacceptable. I also consider other objections from physicalism, phenomenology, and epistemology. (shrink)

I will be talking today about the limits of cognitive science. I won’t be talking about contingent shortcomings that could perhaps be remedied with, say, more time, resources, or ingenuity. Rather, I will be concerned with limitations that are “baked into” the very enterprise. The main blind spot, I will argue, is consciousness—but not for the reasons typically given. Current work in philosophy of mind can sometimes seem arcane, so my goal today will be to answer the question: why bother? (...) I have spent a whole book and several articles trying to make sense of the qualitative dimension of consciousness, but there is no point in trying to sell a solution unless we have first established (independently of any academic literature) that there is a real problem to solve. So, if I can’t convey my position in under an hour, I can at least convey the issue that motivates it. (shrink)

It is commonly assumed that besides knowledge of facts or truths, there is also knowledge of things–for example, we say that we know people or know places. We could call this "objectual knowledge". In this paper, I raise doubts about the idea that there is a sui generis objectual knowledge that is distinct from knowledge of truths.

In her black and white room, Mary doesn’t know what it is like to see red. Only after undergoing an experience as of something red and hence acquainting herself with red can Mary learn what it is like. But learning what it is like to see red requires more than simply becoming acquainted with it. To be acquainted with something is to know it, but such knowledge, as we argue, is object-knowledge rather than propositional-knowledge. To know what it is like (...) one must know an appropriate propositional answer to the question ‘what is it like?’. Despite this mismatch between object-knowledge and knowing an answer, we believe that acquaintance is crucial to Mary’s epistemic progress. When Mary leaves her black and white room, her new knowledge tempts one to think that she must come to know a candidate answer (a coarse-grained fact) that she didn’t know in her room. Since Mary already knows all the physical facts in her room, any additional facts she might learn appear to threaten physicalism. In reply, many physicalists have been attracted to the phenomenal concept strategy according to which Mary can come to have new knowledge and hence know a new answer to the question ‘what is it like to see red?’ by entertaining a coarse-grained fact under a concept she didn’t possess in her room – Mary learns a new fine-grained fact. We believe both of these accounts of Mary’s epistemic progress are mistaken. As we argue, Mary could know every fact (coarse-grained and fine-grained) that might serve as an answer to the question ‘what is it like to see red?’ and still not know what it is like. The physical world leaves no leftover coarse-grained facts for Mary to learn and because concepts are sharable, easy to possess, and easy to introduce, there are possible situations in which Mary, while in her black and white room, has every concept that might make a fine-grained difference. In short, even when Mary is granted a great deal of factual knowledge and vast conceptual resources, she may still not know an appropriate answer to the question ‘what is it like to see red?’. But in any such situation, Mary lacks acquaintance with red and on this basis we argue that in order to know what it is like, in order for Mary to know an appropriate answer, Mary’s propositional knowledge must be appropriately related to her acquaintance with red. (shrink)

The verb ‘to know’ can be used both in ascriptions of propositional knowledge and ascriptions of knowledge of acquaintance. In the formal epistemology literature, the former use of ‘know’ has attracted considerable attention, while the latter is typically regarded as derivative. This attitude may be unsatisfactory for those philosophers who, like Russell, are not willing to think of knowledge of acquaintance as a subsidiary or dependent kind of knowledge. In this paper we outline a logic of knowledge of acquaintance in (...) which ascriptions like ‘Mary knows Smith’ are regarded as formally interesting in their own right, remaining neutral on their relation to ascriptions of propositional knowledge. The resulting logical framework, which is based on Hintikka’s modal approach to epistemic logic, provides a fresh perspective on various issues and notions at play in the philosophical debate on acquaintance. (shrink)

According to Chalmers (2018), the meta-problem of consciousness is 'the problem of explaining why we think that there is a problem of consciousness'. In this paper I argue that the key to understanding both consciousness itself and addressing the meta-problem is to understand what acquaintance is and what its objects are. Unfortunately, I think there are still some serious mysteries lurking here, which I present briefly in this commentary. In particular, on the view of acquaintance I favour, it is unclear (...) how our acquaintance with the contents of experience can serve as data for our theory of conscious experience. I end with some speculations concerning how to address this mystery. (shrink)

Phenomenal conservatism (PC) is the internalist view that non-inferential justification rests on appearances. PC’s advocates have recently argued that seemings are also required to explain inferential justification. The most general and developed view to this effect is Huemer (2016)’s theory of inferential seemings (ToIS). Moretti (2018) has shown that PC is affected by the problem of reflective awareness, which makes PC open to sceptical challenges. In this paper I argue that ToIS is afflicted by a version of the same problem (...) and it is thus hostage to inferential scepticism. I also suggest a possible response on behalf of ToIS’s advocates. (shrink)

Selon le russellianisme, nous avons des pensées singulières faisant directement référence aux objets, fondées sur des relations d’accointance (1 re partie). Selon le frégéanisme, toute pensée est médiatisée par un concept (2 e partie). Le fressellianisme anti-descriptiviste cherche à réconcilier ces thèses apparemment opposées, et à éviter les objections auxquelles chacune s’expose, en postulant des concepts singuliers, individués par des relations d’accointance (3 e partie). Mais le fressellianisme rencontre un dilemme : s’il conçoit l’accointance en termes causaux, il rencontre les (...) mêmes objections que le russellianisme ; mais s’il conçoit l’accointance en termes épistémiques, il rencontre les mêmes objections que le frégéanisme (4 e partie). Le but principal de cet article est ainsi essentiellement négatif : il s’agit de montrer que le fressellianisme anti-descriptif, qui prétend constituer une avancée significative par rapport au russellianisme et au frégéanisme, hérite en fait des faiblesses des deux approches. (shrink)

Russell’s theory of acquaintance construes perceptual awareness as at once constitutively independent of conceptual thought and yet a source of propositional knowledge. Wilfrid Sellars, John McDowell, and other conceptualists object that this is a ‘myth’: perception can be a source of knowledge only if conceptual capacities are already in play therein. Proponents of a relational view of experience, including John Campbell, meanwhile voice sympathy for Russell’s position on this point. This paper seeks to spell out, and defend, a claim that (...) offers the prospects for an attractive, unacknowledged element of common ground in this debate. The claim is that conceptual capacities, at least in a certain minimal sense implicit in McDowell’s recent work, must be operative in perceptual experience, if it is to rationalize judgement. The claim will be supported on the basis of two premises, each of which can be defended drawing, inter alia, on considerations stressed by Campbell. First, that experience rationalizes judgement only if it is attentive. Second, that attention qualifies as a conceptual capacity, in the noted, minimal sense. The conjunction of the two premises might be dubbed ‘attentional conceptualism’. (shrink)

The thesis that in order to genuinely think about a particular object one must be (in some sense) acquainted with that object has been thoroughly explored since it was put forward by Bertrand Russell. Recently, the thesis has come in for mounting criticism. The aim of this paper is to point out that neither the exploration nor the criticism have been sensitive to the fact that the thesis can be interpreted in two different ways, yielding two different principles of acquaintance. (...) One principle uses the notion of content in distinguishing genuine thinking-about things from a merely derivative kind of thinking-about things. The other principle is quiet about content, focusing instead on a distinction between satisfactional and non-satisfactional means of bringing things into thought. Most work has focused on the first, content-based principle of acquaintance. But criticisms of this principle do not apply straightforwardly to the non-content-based principle. I shall argue that the latter principle merits independent assessment as part of the broader effort to account for genuine thinking about particular objects. In the final section of the paper, I will sketch a roadmap for this assessment. (shrink)

This is the introductory essay to the collection of essays: 'Acquaintance: New Essays' (eds. Knowles & Raleigh, forthcoming, OUP). In this essay I provide some historical background to the concept of acquaintance. I examine various Russellian theses about acquaintance that contemporary acquaintance theorists may wish to reject. I consider a number of questions that acquaintance theorists face. I provide a survey of current debates in philosophy where acquaintance has recently been invoked. And I also provide brief summaries of the other (...) essays in this volume. (shrink)

I discuss the view tentatively put forward by Recanati in Mental Files to turn two potentially contradictory claims compatible: the claim to the effect that acquaintance is a necessary condition of singular thought and the claim that we do entertain acquaintanceless singular thoughts (i.e. thoughts directed at particulars as particulars). Key to the proposal is a normative construal of the acquaintance constraint. I show the proposal as it stands is wanting, first, because the norm the users of descriptive names are (...) subject to has no (determinate) conditions of satisfaction within the framework ; second, because the kind of mental simulation involved in exploiting the norm in this type of case is misdescribed as a “local lapse into fiction” ; third, because it leaves the issue pertaining to the conditions of satisfaction of the acquaintance norm over time unaddressed. (shrink)

Recent epistemology offers an account of what it is to know other persons. Such views hold promise for illuminating several issues in philosophy of religion, and for advancing a distinctive approach to religious epistemology. This paper develops an account of interpersonal knowledge, and clarifies its relation to propositional and qualitative knowledge. I then turn to our knowledge of God and God's knowledge of us, and compare my account of interpersonal knowledge with important work by Eleonore Stump on "Franciscan" knowledge. I (...) examine how interpersonal knowledge may figure in liturgical practice, in diffusing the problem of divine hiddenness, and in motivating a novel understanding of divine love. I also explore the possibility of epistemic injustice arising from dismissal or neglect of our religious testimony to one another, or of divine testimony to humanity, focusing specifically on the import of interpersonal knowledge. (shrink)

This chapter examines Bertrand Russell's developing views--roughly from 1911 to 1918--on the nature of introspective knowledge and subjects' most basic knowledge of themselves as themselves. It argues that Russell's theory of introspection distinguishes between direct awareness of individual psychological objects and features, the presentation of psychological complexes involving those objects and features, and introspective judgments which aim to correspond with them. It also explores his transition from believing that subjects enjoy introspective self-acquaintance, to believing that they only know themselves by (...) self-description, and eventually to believing that self-knowledge is a logical construction. It concludes by sketching how Russell's views about introspection and self-knowledge change as a result of his adoption of neutral monism. Along the way, it sheds additional light on his acquaintance-based theory of knowledge, preference for logical constructions over inferred entities, and gradual progression towards neutral monism. (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)

Bertrand Russell [1912] argued that we are acquainted with our experiences. Although this conclusion has generated a lot of discussion, very little has been said about Russell's actual arguments for it. This paper aims to remedy that. I start by spelling out two Russellian arguments for acquaintance. Then I show that these arguments cannot both succeed. For if one is sound, the other isn't. Finally, I weigh our options with respect to these arguments, and defend one option in particular. I (...) argue that we have good reason to believe that we can be, and sometimes are, acquainted with our experiences. (shrink)

In the philosophy of art, one of the most important debates concerns the so-called ‘cognitive value’ of literature. The main question is phrased in various ways. Can literary narratives provide knowledge? Can readers learn from works of literature? Most of the discussants agree on an affirmative answer, but it is contested what the relevant notions of truth and knowledge are and whether this knowledge and learning influence aesthetic or literary value. The issue takes on a wider, not only philosophical, importance (...) as it is one of the central tenets of humanistic education that art and literature are valuable not only because the pleasure they afford. This paper offers a new line of argument in departing from propositional truth, arguing that literary narratives provide aesthetically significant knowledge, however, this knowledge cannot be captured in propositional form. My position depends crucially on Frank Jackson's influential knowledge argument. The paper describes a modified ‘What Mary Didn't Read’ case. In doing so, it is argued that the knowledge literary works provide should be understood as a type of experiential knowing of ‘what it is like’ analogous to what Mary acquires in the original case of seeing a new colour for the first time. (shrink)