When is it permissible to rely on a proposition in practical reasoning? Standard answers to this question face serious challenges. This paper uses these challenges to motivate a certainty norm of practical reasoning. This norm holds that one is permitted to rely on p in practical reasoning if and only if p is epistemically certain. After developing and defending this norm, I consider its broader implications. Taking a certainty norm seriously calls into question traditional assumptions about the importance (...) of belief and knowledge. In particular, it raises the possibility that many epistemological jobs that are usually assigned to belief and knowledge should be reallocated to two related but importantly different states: psychological and epistemic certainty. (shrink)

Delusions are unhinged hinge certainties. Delusions are defined as strongly anchored beliefs that do not change in the face of adverse evidence. The same goes for Wittgensteinian certainties. My paper refines the so-called framework views of delusion, presenting an argument that epistemically speaking, considering them to be certainties best accounts for delusions’ doxastic profile. Until now there has been little argument in favour of this position and the original proposals made too extreme predictions about the belief systems of delusional patients. (...) I show that my account fares better with the diverse objections that have been raised against older framework views of delusion (Campbell 2001, Gipps and Rhodes 2008). Finally, I examine what makes a harmless hinge into a pathological delusion. (shrink)

Certainty The following article provides an overview of the philosophical debate surrounding certainty. It does so in light of distinctions that can be drawn between objective, psychological, and epistemic certainty. Certainty consists of a valuable cognitive standing, which is often seen as an ideal. It is indeed natural to evaluate lesser cognitive standings, in particular … Continue reading Certainty →.

In this paper, we identify and explain three kinds of bedrock in moral thought. The term "bedrock," as introduced by Wittgenstein in §217 of the Philosophical Investigations, stands for the end of a chain of reasoning. We affirm that some chains of moral reasoning do indeed end with certainty. However, different kinds of certainties in morality work in different ways. In the course of systematizing the different types of certainties, we argue that present accounts of certainties in morality do (...) not reflect their diversity. Our analysis yields three types of moral certainty: QUASI-UNDOUBTABLE CERTAIN PROPOSITIONS, CERTAIN PROPOSITIONS, and TRANSCENDENTAL CERTAINTIES. We show that the first two types can, at least to some extent, be intelligibly doubted. Therefore, they do not possess the characteristics that would classify them as bedrock in the strictest sense. TRANSCENDENTAL CERTAINTIES cannot likewise be doubted because they are rules that enable moral thinking. Thus, deviating from them is unintelligible. We shall argue that all three types reflect ways in which moral language games come to an end, while only one, TRANSCENDENTAL CERTAINTIES, displays the characteristic of being solid bedrock. (shrink)

Exploring Certainty: Wittgenstein and Wide Fields of Thought considers how, where, and to what extent the thoughts and ideas found in Wittgenstein’s On Certainty can be applied to other areas of thought, including: ethics, aesthetics, religious belief, mathematics, cognitive science, and political theory. Robert Greenleaf Brice opens new avenues of thought for scholars and students of the Wittgensteinian tradition, while introducing original philosophies about human knowledge and cognition.

This overview of the philosophy of certainty will distinguish two types of certainty, specify controversial theses about certainty from recent literature, and explain some of the arguments for and against those theses.

After Certainty offers a reconstruction of the history of epistemology, understood as a series of changing expectations about the cognitive ideal that we might hope to achieve in this world. Pasnau ranges widely over philosophy from Aristotle to the 17th century, and examines in some detail the rise of science as an autonomous discipline.

Now in paperback, Jean-Luc Marion's groundbreaking philosophy of human uncertainty. In Negative Certainties, renowned philosopher Jean-Luc Marion challenges some of the most fundamental assumptions we have developed about knowledge: that it is categorical, predicative, and positive. Following Descartes, Kant, and Heidegger, he looks toward our finitude and the limits of our reason. He asks an astonishingly simple—but profoundly provocative—question in order to open up an entirely new way of thinking about knowledge: Isn’t our uncertainty, our finitude, and rational limitations, one (...) of the few things we can be certain about? Marion shows how the assumption of knowledge as positive demands a reductive epistemology that disregards immeasurable or disorderly phenomena. He shows that we have experiences every day that have no identifiable causes or predictable reasons and that these constitute a very real knowledge—a knowledge of the limits of what can be known. Establishing this “negative certainty,” Marion applies it to four aporias, or issues of certain uncertainty: the definition of man; the nature of God; the unconditionality of the gift; and the unpredictability of events. Translated for the first time into English, Negative Certainties is an invigorating work of epistemological inquiry that will take a central place in Marion’s oeuvre. (shrink)

Researchers have debated whether knowledge or certainty is a better candidate for the norm of assertion. Should you make an assertion only if you know it's true? Or should you make an assertion only if you're certain it's true? If either knowledge or certainty is a better candidate, then this will likely have detectable behavioral consequences. I report an experiment that tests for relevant behavioral consequences. The results support the view that assertability is more closely linked to knowledge (...) than to certainty. In multiple scenarios, people were much more willing to allow assertability and certainty to come apart than to allow assertability and knowledge to come apart. (shrink)

In the year 2060, sophisticated investigative tools can help catch a killer. But there are some questions even the most advanced technologies cannot answer... Harlan Coben says, “J.D. Robb’s In Death novels are can’t-miss pleasures.” Her latest is no exception, as the priest at a Catholic funeral mass brings the chalice to his lips—and falls over dead... When Detective Lieutenant Eve Dallas confirms that the consecrated wine contained potassium cyanide, she’s determined to solve the murder of Father Miguel Flores, despite (...) her discomfort with her surroundings. It’s not the bodegas and pawn shops of East Harlem that bother her, though the neighborhood is a long way from the stone mansion she shares with her billionaire husband Roarke. It’s all that holiness flying around at St. Christobal’s that makes her uneasy. A search of the victim’s sparsely furnished room reveals little—except for a carefully hidden religious medal with a mysterious inscription, and a couple of underlined Bible passages. The autopsy reveals more: faint scars of knife wounds, a removed tattoo—and evidence of plastic surgery suggesting “Father Flores” may not be the man his parishioners thought. Now, as Eve pieces together clues that suggest identity theft, gang connections, and a deeply personal act of revenge, she hopes to track down whoever committed this unholy act. Until a second murder—in front of an even larger crowd of worshippers—knocks the whole investigation sideways. Raves for the In Death novels: “A taut, nerve-jangling, thriller.”—Ridley Pearson “A thrills-to-chills ratio that will raise the neck hairs of even the most jaded reader.”—Dennis Lehane “An authentic page-turner.”—Stephen King. (shrink)

This article intends to reconsider the epistemological status of delusional beliefs on the basis of Wittgenstein’s conception of certainty. Several works over the last two decades have compared delusional beliefs with so-called hinge propositions, which – according to Wittgenstein – function as expressions of objective certainty. This gives rise to a paradox. On the one hand, delusions are compatible to Wittgensteinian certainties in some respects; on the other hand, they contradict beliefs shared by other members of the community, (...) which makes them different from ‘normal’ certainties. In order to address this issue, I use Moyal-Sharrock’s taxonomy of hinge propositions. This taxonomy allows one to distinguish between different types of hinge propositions; all types share the same features, but these features are manifested in a variety of ways. Thus, delusional beliefs might also be regarded as constituting a specific type of hinge propositions. This move makes it possible to resolve the paradox and to identify the special epistemic features of delusional beliefs. (shrink)

Rich with historical and cultural value, these works are published unaltered from the original University of Minnesota Press editions.

When we engage in practical deliberation, we sometimes engage in careful probabilistic reasoning. At other times, we simply make flat out assumptions about how the world is or will be. A question thus arises: when, if ever, is it rationally permissible to engage in the latter, less sophisticated kind of practical deliberation? Recently, a number of authors have argued that the answer concerns whether one knows that p. Others have argued that the answer concerns whether one is justified in believing (...) that one knows that p. Against both of these, this paper argues that the answer concerns whether p is ‘practically certain’—that is, whether the actual epistemic probability that p differs from epistemic certainty that p only in ways that are irrelevant to the decision one currently faces. (shrink)

This radical reading of Wittgenstein's third and last masterpiece, On Certainty, has major implications for philosophy. It elucidates Wittgenstein's ultimate thoughts on the nature of our basic beliefs and his demystification of scepticism. Our basic certainties are shown to be nonepistemic, nonpropositional attitudes that, as such, have no verbal occurrence but manifest themselves exclusively in our actions. This fundamental certainty is a belief-in, a primitive confidence or ur-trust whose practical nature bridges the hitherto unresolved categorial gap between belief (...) and action. (shrink)

Michael G. Titelbaum presents a new Bayesian framework for modeling rational degrees of belief—the first of its kind to represent rational requirements on agents who undergo certainty loss.

This article intervenes in a vigorous debate in the study of medieval Islamic philosophy over whether Avicenna's epistemology is rationalist or empiricist. To settle the debate, scholars have so far focused almost entirely on Avicenna's emanationism or abstractionism. In this study, the author articulates two core theses of rationalism: first, innatism, the view that the mind starts out with certain basic truths or concepts; and second, necessitarianism, the view that we can attain necessary or absolutely certain and substantive knowledge. The (...) former has been insufficiently discussed in the debate while the latter has been entirely overlooked. The author demonstrates that Avicenna is not committed to innatism but does subscribe in his natural philosophy to necessitarianism. Thus, he concludes that Avicenna is a rationalist by virtue of the necessitarianism of his natural philosophy. This finding sheds new light on how we should understand Avicenna's philosophical project. (shrink)

During the 1630s Descartes recognized that he could not expect all legitimate claims in natural science to meet the standard of absolute certainty. The realization resulted from a change in his physics, which itself arose not through methodological reflections, but through developments in his substantive metaphysical doctrines. Descartes discovered the metaphysical foundations of his physics in 1629-30; as a consequence, the style of explanation employed in his physical writings changed. His early methodological conceptions, as preserved in the Rules and (...) sketched in Part Two of the Discourse, pertained primarily to his early work in optics. By the early 1630s, Descartes was concerned with new methodological problems pertaining to the postulation of micro-mechanisms. Recognition of the need to employ a method of hypothesis led him to lower the standard of certainty required of particular explanations in his mature physics. (shrink)

What is belief and how does it relate to certainty? This paper takes on some of the strongest arguments for views that identify belief with certainty, credence 1 or maximal confidence. It considers an influential version of the position on which the assignment of credences is context-dependent in crucial ways (especially Clarke [2013]), arguing that such a position is not viable. Examining these arguments and approaches in detail is shown to illuminate some key issues about credences and beliefs (...) and the relation between them, as well as elucidating the role of representation in the understanding of beliefs. While rejecting the position that belief is certainty may seem to reopen the threat of arbitrariness and imprecision, I argue that it is essential to our understanding of beliefs to recognise that our belief-talk is vague. In the final section, I explore the nature and role of doxastic states that are borderline beliefs, which I call vague beliefs. Acknowledging the vagueness of the category of beliefs is necessary to reflect the rich and complex pattern of our doxastic states and commitments in the inevitable absence of certainty. (shrink)

Moral certainty refers to those aspects of morality- moral acting, feeling, and thinking-that are beyond doubt, explanation, and justification. The essays in this book explore the concept of moral certainty and its application and usefulness in contemporary moral debates. The notion of moral certainty, which is inspired by the philosophy of Ludwig Wittgenstein, is emerging as a key reference point in contemporary moral philosophy. An investigation of the implications of moral certainty is called for, given that (...) so many discussions in moral philosophy concern the possibility of justifying our moral beliefs. The concept of moral certainty also feeds directly into the emerging field of hinge epistemolo,gy. The chapters in this volume tackle the following issues: meta-questions around whether and how we can make sense of the concept of moral certainty; the role of moral certainty in contemporary debates on gender, racism, bias and historically unjust practices; ways in which radical change in society engendered by new technologies might affect moral certainties; the role of the notion of moral certainty in the debates on free will and moral responsibility. Philosophical Perspectives on Moral Certainty will appeal to researchers and advanced students working on ethics and moral philosophy, epistemology, philosophy of technology, and Wittgenstein. (shrink)

This is a collection of articles on two central topics in epistemology: certainty and surfaces. Of the ten articles, four discuss Avrum Stroll's Surfaces. The topics explored have been the subject of intense philosophical debate since ancient times.

What are the limits of Left Wittgensteinianism's point- and need-based account of conceptual change? Based upon Wittgenstein's account of certainty and the riverbed analogy for conceptual change in On Certainty, the question is raised whether Queloz and Cueni's redevelopment of Left Wittgensteinianism can account for the multiplicitous forms of change these concepts are subject to. I argue that Left Wittgensteinianism can only partially do so, because it overemphasises the role of criticism-driven conceptual change, due to its focus on (...) the reason-based contingency of the practices of a local ‘we’. In response, it is argued that Left Wittgensteinianism should be fortified with (i) gradual changes to concepts' sociocultural constraints that concept-users are unaware of and (ii) evolutionary and environmental changes to the biological determinants of natural constraints of conceptual cores. In the end, there are conceptual practices like holding for certain that are generally, and fully contingent, but simultaneously inevitable not only for ‘us’ but also for many other delimitations of ‘we’. Subsequently, the compatibility of this Wittgensteinian account of conceptual change with pragmatic genealogy is discussed. It is concluded that thinking about conceptual changes to practices cannot be about the possibility of criticism alone nor succeed without the inclusion thereof. (shrink)

This paper argues that we should assign certainty a central place in epistemology. While epistemic certainty played an important role in the history of epistemology, recent epistemology has tended to dismiss certainty as an unattainable ideal, focusing its attention on knowledge instead. I argue that this is a mistake. Attending to certainty attributions in the wild suggests that much of our everyday knowledge qualifies, in appropriate contexts, as certain. After developing a semantics for certainty ascriptions, (...) I put certainty to explanatory work. Specifically, I argue that by taking certainty as our central epistemic notion, we can shed light on a variety of important topics, including evidence and evidential probability, epistemic modals, and the normative constraints on credence and assertion. (shrink)

Reading Certainty offers incisive historical analysis of the foundational questions of the Christian tradition: how are we to read scripture, and how can we know we are saved? This collection of essays honors the work and thought Susan E. Schreiner by exploring the import of these questions across a wide range of time periods. With contributions from renowned scholars and from Schreiner's students from her more than three decades of teaching, each of the contributions highlights the nexus of (...) class='Hi'>certainty, perception, authority, and exegesis that has defined her scholarly work. Intellectual historians, early modernists, and scholars of Christianity will all appreciate this testament to Schreiner's influence. Contributors include: Vincent Evener, Bruce Gordon, Ralph Keen, Mark Lambert, Kevin J. Madigan, Richard A. Muller, Willemien Otten, Daniel Owings, Elizabeth Palmer, Karen Park, Barbara Pitkin, Ronald K. Rittgers, William Schweiker, Jonathan Strom, and Matthew Vanderpoel. (shrink)

An overview is offered of Wittgenstein's groundbreaking discussion of knowledge and certainty, especially in his final notebooks, published as On Certainty. The main interpretative readings of On Certainty are discussed, especially a non-propositional/non-epistemic interpretation and a variety of propositional and/or epistemic interpretations. Surveys are offered of the readings of On Certainty presented by such figures as Annalisa Coliva, John Greco, Danièle Moyal-Sharrock, Duncan Pritchard, Genia Schönbaumsfeld, P. F. Strawson, MichaelWilliams, and CrispinWright. This Element demonstrates how On (...) Certainty has been especially groundbreaking for epistemology with regard to its treatment of the problem of radical scepticism. (shrink)

Wittgenstein’s On Certainty has been a source of inspiration for philosophers concerned with the notion of deep disagreement (see Fogelin in Informal Logic 25(1):3–11, 2005; Pritchard in Topoi 40:1117–1125, 2021. https://doi.org/10.1007/s11245-018-9612-y ). While Wittgenstein’s examples of certainties do not include moral certainties, some philosophers have argued that an analogy can be drawn between certainty regarding the empirical world and moral certainty (Goodman in Metaphilosophy 13:138–148,1982; Hermann in On moral certainty, justification, and practice: A Wittgensteinian perspective, Palgrave (...) Macmillan, Basingstoke, 2015; Pleasants in Inquiry 51(3):241–267, 2008. https://doi.org/10.1080/00201740802120673 ). Moral certainty manifests itself in our fundamental ways of feeling, thinking, and acting morally. It is closely related to an “agreement in form of life” (Wittgenstein in Philosophical investigations, Translated by G.E.M. Anscombe. Third ed., Basil Blackwell, Oxford, 1968, § 241.), which makes moral disagreements possible in the first place. In this paper, I aim to shed light on the phenomenon of moral deep disagreement by relating it not only to the notion of moral certainty but also to the concept of deep disruption as it is currently developed and discussed in the philosophy of technology. I argue that certainty, deep disagreement, and deep disruption are all located at the level of “bedrock practices” (Williams in Wittgenstein, mind and meaning, Routledge, Milton Park, 1999, p. 198), and that the fundamentality of their objects should be understood in terms of relationality and interconnectedness. Deep disagreements can occur through deep technology-induced disruption and can take the form of a disruption of deep conceptual agreement. Conceptual common ground can be re-established by continuous interaction and a collective process of moral articulation. Deep disruption and moral deep disagreement can lead to moral progress, for instance in the form of recognising and correcting an epistemic injustice. (shrink)

The definitions of ‘negative knowledge’ and the studies in this regard published to date have not considered the categorial distinction Wittgenstein established between knowledge and certainty. Hence, the important role that certainty, despite its omission, should have in these definitions and studies has not yet been shown. In this article, I contrast the term ‘negative certainty’ with that of ‘negative knowledge’ in order to clarify this concept by describing its significant differences with the first. To characterize negative (...) certainty, I base upon two criteria: on the one hand, negative certainty cannot be directly excluded by a positive certainty, and on the other hand, negative certainty must have an obvious and practical usefulness in which its negative nature is clearly appreciated. To illustrate the use of these two criteria, I describe four examples of negative certainty, paying special attention to their educational implications as well as the contrast between negative certainty and negative knowledge. (shrink)

Most philosophers, including all materialists I know of, believe that I am a complex thing?a thing with parts?and that my mental life is (or is a result of) the interaction of these parts. These philosophers often believe that I am a body or a brain, and my mental life is (or is a product of) brain activity. In this paper, I develop and defend a novel argument against this view. The argument turns on certainty, that highest epistemic status that (...) a precious few of our beliefs enjoy. For example, on the basis of introspection, I am certain that I am not in fierce pain right now. But if I am a complex thing like a body or a brain, then introspection might be a causal series of events extended in time. And any such process could go awry. So, if introspection is such a process, then I could gain good evidence that the introspective process has gone awry and that I am, contrary to appearances, feeling fierce pain right now. Therefore, the view that I am a complex thing like a body or a brain forces open the possibility that I cannot be certain that I am not feeling fierce pain right now. Since that is clearly not an open possibility, it follows that I am not a complex thing. I conclude by responding to three objections. (shrink)

In this book, Rhees brings out the continuity in Wittgenstein's thought, and the radical character of his conclusions.

Does scepticism threaten our common sense picture of the world? Does it really undermine our deep-rooted certainties? Answers to these questions are offered through a comparative study of the epistemological work of two key figures in the history of analytic philosophy, G. E. Moore and Ludwig Wittgenstein.

This paper seeks to widen the dialogue between the “epistemology of peer disagreement” and the epistemology informed by Wittgenstein’s last notebooks, later edited as On Certainty. The paper defends the following theses: not all certainties are groundless; many of them are beliefs; and they do not have a common essence. An epistemic peer need not share all of my certainties. Which response to a disagreement over a certainty is called for, depends on the type of certainty in (...) question. Sometimes a form of relativism is the right response. Reasonable, mutually recognized peer disagreement over a certainty is possible.—The paper thus addresses both interpretative and systematic issues. It uses Wittgenstein as a resource for thinking about peer disagreement over certainties. (shrink)

Meaning, believing, thinking, understanding, reasoning, calculating, learning, remembering, intending, expecting, loving, longing: these experiences are, according to Wittgenstein, embodied actions. In Certainty in Action, Danièle Moyal-Sharrock argues that there is hardly anything traditionally thought to be a mental process or state, that, in fact, Ludwig Wittgenstein has not shown to be primarily embodied or enacted. The book traces the radical, diverse and recurrent importance of action and 'ways of acting' as the original and cohesive thread weaving through all of (...) Wittgenstein's philosophy, especially language and memory. Moyal-Sharrock highlights throughout Wittgenstein's clarification of 'the inner' and his belief in the certainty of action. With Wittgenstein's philosophy increasingly influencing multiple branches of psychology, particularly those concerned with child development, language acquisition and memory, Certainty in Action is essential reading for students and researchers interested in the philosophy underpinning these areas, as well as Wittgenstein specialists. (shrink)

We ordinarily assume that we have reliable knowledge of our immediate surroundings, so much so that almost all the time we entrust our lives to the truth of what we take ourselves to know, without a moment’s thought. But if, as Karl Popper and others have maintained, all our knowledge is conjectural, then this habitual assumption that our common sense knowledge of our environment is secure and trustworthy would seem to be an illusion. Popper’s philosophy of science, in particular, fails (...) to do justice to the distinction we ordinarily draw between secure knowledge and mere conjecture. But Popper’s philosophy of science, in particular his attempted solution to the problem of induction, is defective. It fails to take into account that physics, in only accepting unified theories, even though endlessly empirically more successful disunified rivals are always available, makes the persistent metaphysical assumption that all disunified theories are false. Once this point is acknowledged, it becomes clear that a new conception of scientific method is required which sees science as making a hierarchy of metaphysical assumptions concerning the comprehensibility and knowability of the universe. This provides a framework of relatively unproblematic assumptions and associated methods of science within which much more problematic assumptions and associated methods can be critically assessed and improved. This hierarchical view seems at first to intensify the problem of distinguishing certainty from conjecture, in that it emphasizes that scientific knowledge, and even humble common sense knowledge, contain usually unacknowledged cosmological conjectures. But actually it explicates the basis we have for drawing the distinction between trustworthy knowledge and mere conjecture, and even goes some way towards providing a rationale for this distinction, in so far as one exists. (shrink)

The aim of the article is to formulate a proposal for the conceptual analysis of the notion of predictability of law, in order to make clear its theoretical and practical implications. To achieve this goal, I will explain the theoretical (what conceptual implications it has) and practical (what decisions it requires us to make) commitments that this conceptualization requires. Specifically, I analyze the commitments to the types of receivers of predictions and issuers of predictions; then I identify what kinds of (...) relationship can be assumed between the predictability of law and its effectiveness; next I indicate what the use of predictions as a means of assessing the degree of satisfaction of legal certainty commits us. Finally I indicate what commitments must be made in adopting a methodology for making predictions. (shrink)

This volume combines philosophy, the social theory of knowledge, and historical analysis to present a comprehensive study of the idea of certainty as defined in the Western and Chinese intellectual traditions. Philosophical ideas such as certainty are the products of deeply layered socio-historical constructions. The author shows how the highly abstract idea of certainty in philosophical discourse is connected to the concrete social process from which the meaning of certainty is derived. Three different versions of (...) class='Hi'>certainty--in modern Western thought, in German Idealism, and in traditional Chinese philosophy--are examined in the context of a historical-comparative study of Western and Chinese social processes. Three versions of the idea of certainty are represented by the three distinct philosophical discourse and societies explored in this book. However, the pursuit of certainty transcends culture as a fundamental aspect of philosophical thought. This in-depth study shows how the social genesis and function in philosophy of the specific meaning of certainty has been delineated through a process of complex idealogical negotiation by dominant social groups--the bourgeoisie in modern Western Europe, the nobility and state bureaucrats in 18th- and 19th-century Germany, and the landed gentry in traditional China. The author concludes by suggesting new avenues for study inspired by his research. (shrink)

According to epistemic fallibilism, we cannot be certain of anything. According to the Christian tradition, faith comes with certainty. I develop this dilemma from recent accounts of fallibilism and various representatives of the Christian tradition. I then argue that on John Henry Newman's account of faith the dilemma is merely apparent. Finally, I develop Newman's account of the certainty that accompanies faith and is compatible with fallibilism.

If we agree, along with Arnauld, Berkeley, Descartes, Hume, Leibniz, and others that our occurrent phenomenal states serve as sources of epistemic certainty for us, we need some explanation of this fact. Many contemporary writers, most notably Roderick Chisholm, maintain that there is something special about the phenomenal states themselves that allows our certain knowledge of them. I argue that Chisholm's view is both wrong and irreparable, and that the capacity of humans to know these states with certainty (...) has to do with the contingent cognitive capacities and abilities people have. (shrink)

ABSTRACTLloyd encourages us to look anew at philosophy and science by using a comparative methodology, comparing the familiar Western form of philosophy, for example, with the forms found in ancient China. Taking lessons from comparative biology, this paper attempts to show that such comparison can only take place when we understand what we are looking at in the familiar case. The question of the centrality of the drive for certainty is addressed. Why has certainty been so attractive and (...) what does it mean if philosophers and scientists cannot achieve certainty? (shrink)

For Kant, knowledge involves certainty. If “certainty” requires that the grounds for a given propositional attitude guarantee its truth, then this is an infallibilist view of epistemic justification. Such a view says you can’t have epistemic justification for an attitude unless the attitude is also true. Here I want to defend an alternative fallibilist interpretation. Even if a subject has grounds that would be sufficient for knowledge if the proposition were true, the proposition might not be true. And (...) so there is sometimes still rational room for doubt. The goal of this paper is to present four different models of what “certainty” amounts to, for Kant, each of which is compatible with fallibilism. (shrink)

I consider the relationship between the notion of certainty and the notion of a form of life. There are circumstances under which a feeling of certainty may become the ground for adopting a certain form of life. The forms of life I have in mind are those with a formal orientation towards the realization of the (morally) good for its own sake. The article proceeds in three steps: First I consider Luther’s certainty of salvation as a kind (...) of inaugural (theological) reflection on what will be called immediate certainty as the basis for a form of life aiming at the realization of the morally good for its own sake. With reference to Kierkegaard’s “Either-Or” I then try to show that such an immediate certainty can also be considered as the ground of an ethical form of life without religious implications. With the help of contemporary cognitive psychology I will finally propose an explanation of such a certainty as one that we experience because of our universal cognitive and conative constitution. The three steps amount to a universalization and naturalization of Luther’s certainty of salvation. (shrink)

This paper addresses the objections that Genia Schönbaumsfeld makes in The Illusion of Doubt to my view of hinge certainty as a ‘certainty’, and as nonepistemic, nonpropositional and animal. It also addresses her (related) dissatisfaction with Wittgenstein’s notion of ‘the groundlessness of our believing’.

Hume appeals to different kinds of certainties and necessities in the Treatise. He contrasts the certainty that arises from intuition and demonstrative reasoning with the certainty that arises from causal reasoning. He denies that the causal maxim is absolutely or metaphysically necessary, but he nonetheless takes the causal maxim and ‘proofs’ to be necessary. The focus of this paper is the certainty and necessity involved in Hume’s concept of knowledge. I defend the view that intuitive certainty, (...) in particular, is certainty of the invariability or necessity of relations between ideas. Against David Owen and Helen Beebee, I argue that the certainty involved in intuition depends on the activity of the mind. I argue, further, that understanding this activity helps us understand more clearly one of Hume’s most important theses, namely that experience is the source of a distinct kind of certainty and of necessity. (shrink)

Annalisa Coliva (Int J Study Skept 10(3–4):346–366, 2020) asks, “Are there mathematical hinges?” I argue here, against Coliva’s own conclusion, that there are. I further claim that this affirmative answer allows a case to be made for taking the concept of a hinge to be a useful and general-purpose tool for studying mathematical practice in its real complexity. Seeing how Wittgenstein can, and why he would, countenance mathematical hinges additionally gives us a deeper understanding of some of his latest thoughts (...) on mathematics. For example, a view of how mathematical hinges relate to Wittgenstein’s well-known river-bed analogy enables us to see how his way of thinking about mathematics can account nicely for a “dynamics of change” within mathematical research—something his philosophy of mathematics has been accused of missing (e.g., by Robert Ackermann (Wittgenstein’s city, The University of Massachusetts Press, Amherst, 1988) and Mark Wilson (Wandering significance: an essay on conceptual behavior, Oxford University Press, Oxford, 2006). Finally, the perspective on mathematical hinges ultimately arrived at will be seen to provide us with illuminating examples of how our conceptual choices and theories can be ungrounded but nevertheless the right ones (in a sense to be explained). (shrink)

Moral certainty is a growing research area in philosophy with implications for current debates on hinge epistemology, moral change and deep moral disagreements. Despite several distinctive lines of disagreement, two assumptions are shared in the current discussion of moral certainty. The first is the acknowledgement of Wittgenstein's work On Certainty as the main source of inspiration. The second is the understanding that Wittgenstein's later writings do not feature any work on the topic of moral certainty. In (...) this article, we challenge the latter standard assumption. We show that Wittgenstein did consider examples of moral certainty and can also be said to have a conception of moral certainty in his later writings. This paves the way for future scholars to turn to Wittgenstein's writings not only as a source of inspiration for work on moral certainty, but also as a direct source of insight into this specific topic. (shrink)

This paper presents a new approach to resolving an apparent tension in Descartes’ discussion of scientific theories and explanations in the Principles of Philosophy. On the one hand, Descartes repeatedly claims that any theories presented in science must be certain and indubitable. On the other hand, Descartes himself presents an astonishing number of speculative explanations of various scientific phenomena. In response to this tension, commentators have suggested that Descartes changed his mind about scientific theories having to be certain and indubitable, (...) that he lacked the conceptual resources to describe the appropriate epistemic attitude towards speculative theories, or that the presence of geometrical principles in these explanations guarantee their certainty. I argue that none of these responses is satisfactory and suggest a different resolution to the tension by examining Descartes’ notion of explanation. On Descartes’ view, providing an adequate explanation does not require being certain of the theories that constitute the explanans. Relatedly, the purpose of Cartesian explanations is not to discover the truth about the various underlying mechanisms that such explanations appeal to, but to support his general philosophical thesis that all natural phenomena can be explained by appealing to the extension of matter. (shrink)

I argue that being wide awake is an epistemic virtue which enables me to recognize immediately that I'm wide awake. Also I argue that dreams are imaginings and that the wide awake mind can immediately discern the difference between imaginings and vivid sense experience. Descartes need only pinch himself.

In recent discussions in this journal, Moti Mizrahi defends the claim that knowledge equals epistemic certainty. Howard Sankey finds Mizrahi’s argument to be problematic, since, as he reads it, this would entail that justification must guarantee truth. In this article, I suggest that an account of the normativity of justification is able to bridge the gap between Mizrahi’s proposal and Sankey’s objections.

In On Certainty, Wittgenstein’s reflections bring into view the phenomenon of basic certainty. He explores this phenomenon mostly in relation to our certainty with regard to empirical states of affairs. Drawing on these seminal observations and reflections, I extend the inquiry into what I call “basic moral certainty”, arguing that the latter plays the same kind of foundational role in our moral practices and judgements as basic empirical certainty does in our epistemic practices and judgements. (...) I illustrate the nature and significance of basic moral certainty via critical examination of contemporary philosophical “explanations” of the wrongness of killing. These pseudo explanations, as I show them to be, will be seen to founder in a similar manner to Moore’s “Proof” of an external world, that is, in a manner that discloses the phenomenon of basic (moral) certainty. (shrink)