Justification as Ignorance offers an original account of epistemic justification as both non-factive and luminous, vindicating core internalist intuitions without construing justification as an internal condition knowable by reflection alone. Sven Rosenkranz conceives of justification, in its doxastic and propositional varieties, as a kind of epistemic possibility of knowing and of being in a position to know. His account contrasts with recent alternative views that characterize justification in terms of the metaphysical possibility of knowing. Instead, he develops a (...) suitable non-normal multi-modal epistemic logic for knowledge and being in a position to know that respects the finding that these notions create hyperintensional contexts. He also defends his conception of justification against well-known anti-luminosity arguments, shows that the account allows for fruitful applications and principled solutions to the lottery and preface paradoxes, and provides a metaphysics of justification and its varying degrees of strength that is compatible with core assumptions of the knowledge-first approach and disjunctivist conceptions of mental states. (shrink)

In this paper, we clarify what proponents of the Growing Block Theory (GBT) should and what they should not say, and what they consistently can say. Once all the central tenets of the view are on the table, we address both David Braddon-Mitchell’s and Trenton Merricks’ recent eulogies for GBT, based on what is representative of a certain type of argument meant to show that GBT is internally incoherent. We argue that this type of argument proceeds from a mistaken assumption (...) about GBT’s core, viz. that GBT works with an untensed notion of what, in the metaphysically most fundamental sense, there is. We conclude that this type of argument accordingly misfires and that for all we know, we might be living on the brink of reality. (shrink)

The paper explores a structural account of propositional justification in terms of the notion of being in a position to know and negation. Combined with a non-normal logic for being in a position to know, the account allows for the derivation of plausible principles of justification. The account is neutral on whether justification is grounded in internally individuated mental states, and likewise on whether it is grounded in facts that are already accessible by introspection or reflection alone. To this extent, (...) it is compatible both with internalism and with externalism about justification. Even so, the account allows for the proof of principles that are commonly conceived to depend on an internalist conception of justification. The account likewise coheres both with epistemic contextualism and with its rejection, and is compatible both with the knowledge-first approach and with its rejection. Despite its neutrality on these issues, the account makes propositional justification luminous and so is controversial. However, it proves quite resilient in the light of recent anti-luminosity arguments. (shrink)

Functionalism about mental phenomena must account for their multiple realizability. According to standard doctrine, this can be achieved by allowing our folk theory's realization formula to be multiply satisfied by distinct physical properties. If at all, uniqueness can then be restored by suitable relativization to populations or worlds. Recent arguments suggest that this is a dead end. Here the attempt is made to devise a novel type of functionalism that accounts for multiple realizability but rejects the standard doctrine and thus (...) proves immune to those arguments. The distinctive feature of this novel type of functionalism is its use of plural quantification in ramsification, which allows it to retain uniqueness of satisfaction despite multiple realizability while respecting naturalness requirements on physical properties. (shrink)

Within certain philosophical debates, most notably those concerning the limits of our knowledge, agnosticism seems a plausible, and potentially the right, stance to take. Yet, in order to qualify as a proper stance, and not just the refusal to adopt any, agnosticism must be shown to be in opposition to both endorsement and denial and to be answerable to future evidence. This paper explicates and defends the thesis that agnosticism may indeed define such a third stance that is weaker than (...) scepticism and hence offers a genuine alternative to realism and anti-realism about our cognitive limits. (shrink)

Ockhamism implies that future contingents may be true, their historical contingency notwithstanding. It is thus opposed to both the Peircean view according to which all future contingents are false, and Supervaluationist Indeterminism according to which all future contingents are neither true nor false. The paper seeks to defend Ockhamism against two charges: the charge that it cannot meet the requirement that truths be grounded in reality, and the charge that it proves incompatible with objective indeterminism about the future. In each (...) case, the defence draws on the idea that certain truths are truths only courtesy of others and of what makes the latter true. After introduction of the Ockhamist view, its competitors and implications, a suitable definition of grounded truth is being devised that both is faithful to the spirit of the grounding-requirement and allows the Ockhamist to heed that requirement quite comfortably. Then two senses in which the future might be open are being introduced, indeterminacy as failure of predetermination by past and present facts, and indeterminacy as failure of entailment by past and present truths. It is argued that while openness in the former sense, but not in the latter sense, coheres with the Ockhamist view, it is only openness in the former sense that matters for objective indeterminism. (shrink)

Responding to the critical comments by the symposiasts Julien Dutant, Niccolò Rossi, Martin Smith, Daniel Waxman, and Yiwen Zhan, I further elaborate, refine, and defend the account of epistemic justification I advanced in my book Justification as Ignorance (Oxford: Oxford University Press, 2021). Central issues tackled here include logical omniscience and non-normal epistemic logics, the luminosity of epistemic justification, methods for telling what one is in no position to know, and the relation between doxastic and propositional justification.

Many of our sources of knowledge only afford us knowledge that is inexact. When trying to see how tall something is, or to hear how far away something is, or to remember how long something lasted, we may come to know some facts about the approximate size, distance or duration of the thing in question but we don’t come to know exactly what its size, distance or duration is. In some such situations we also have some pointed knowledge of how (...) inexact our knowledge is. That is, we can knowledgeably pinpoint some exact claims that we do not know. We show that standard models of inexact knowledge leave little or no room for such pointed knowledge. We devise alternative models that are not afflicted by this shortcoming. (shrink)

The knowledge account of assertion construes assertion as subject to constitutive norms. In its standard version, it combines a wide scope obligation not to assert p without knowing p, with narrow scope principles specifying conditions under which it is permissible to assert p, where the notions of obligation and permission are duals and behave uniformly for variable p. It is argued that, given natural assumptions about the logic of ‘ought’, the account proves incoherent. The argument generalizes to accounts that substitute (...) other factive notions for knowledge. A recent non‐standard version of the knowledge account employs proposition‐relative norms and circumvents the problem. However, it still leads to intolerable combinations of verdicts. Again, the problem arises because knowledge is factive, and it generalizes to other factive notions. It is shown that non‐factive accounts face none of the diagnosed difficulties and can do much of the explanatory work that the knowledge account is alleged to do. (shrink)

The current debate about peer disagreement has so far mainly focused on the question of whether peer disagreements provide genuine counterevidence to which we should respond by revising our credences. By contrast, comparatively little attention has been devoted to the question by which process, if any, such revision should be brought about. The standard assumption is that we update our credences by conditionalizing on the evidence that peer disagreements provide. In this paper, we argue that non-dogmatist views have good reasons (...) to reject conditionalization. Instead, peer disagreements should be understood to call for a revision of our prior conditional probabilities: rather than merely adding to our original evidence, they pose a challenge to the thought that we have properly assessed the probative force of our original evidence. (shrink)

We argue that sensitivity to the distinction between the tensed notion of being something and the tensed notion of being located at the present time serves as a good antidote to confusions in debates about time and existence, in particular in the debate about how to characterise presentism, and saves us the trouble of going through unnecessary epicycles. Both notions are frequently expressed using the tensed verb ‘to exist’, making it systematically ambiguous. It is a commendable strategy to avoid using (...) that verb altogether in these contexts and to use quantification and a location predicate instead. (shrink)

Daniel Waxman (2022a) argues that the thesis, recently advanced in Rosenkranz 2021, that one has propositional justification for φ, if and only if one is in no position to rule out that one is in a position to know φ, has clear counter examples. However, Waxman makes controversial assumptions about the notion of being in a position to know that I should and coherently can reject. On the alternative construal of the notion open to me, Waxman’s strategy to produce (...) counterexamples founders. However, this line of response has repercussions for two further theses I defend, viz. that propositional justification and its absence each are luminous. It is shown what more needs to be argued in order to avert a corresponding threat to the latter. (shrink)

Realism about tense is the view that the contrast between what was, what is and what will be the case is real, and not merely a projection of our ways of thinking. Does this view entail realism about temporal passage, namely the view that time really passes, in the same sense of ‘real’? We argue that the answer is affirmative for many versions of tense realism, and indeed for all sensible versions. We thereby address an important conceptual issue regarding these (...) two forms of realism and rebut recent claims that tense realism is compatible with anti-realism about temporal passage. (shrink)

We argue that presentism, understood as a view about time and existence, can perspicuously be defined in opposition to all other familiar contenders without appeal to any notion of presentness or cognate notions such as concreteness. Given recent worries about the suitability of such notions to cut much metaphysical ice, this should be welcomed by presentism's defenders. We also show that, irrespective of its sparse ideology, the proposed formulation forestalls any deviant interpretation at odds with the view it aims to (...) capture. (shrink)

In this précis, I give an overview of the theses advanced and defended in my book Justification as Ignorance.

In recent publications, Kit Fine devises a classification of A-theories of time and defends a non-standard A-theory he calls fragmentalism, according to which reality as a whole is incoherent but fragments into classes of mutually coherent tensed facts. We argue that Fine's classification in not exhaustive, as it ignores another non-standard A-theory we dub dynamic absolutism, according to which there are tensed facts that stay numerically the same and yet undergo qualitative changes as time goes by. We expound this theory (...) in some detail and argue that it is a serious alternative to the positions identified by Fine. (shrink)

In what follows, we will reply to the critical comments one by one in the order that seemed most natural to us, given the topics covered. Apart from the references section towards the end, our replies are conceived as pieces each of which can be read independently from any of the others (but not, of course, independently from the comments it responds to). We hope to have done justice to the critical points made by our commentators and to have come (...) up with viable answers to the various challenges they raise. (shrink)

Temporaryism—the view that not always everything always exists—comes in two main versions: presentism and expansionism (aka the growing block theory of time). Both versions of the view are commonly formulated using the notion of being present, which we, among others, find problematic. Expansionism is also sometimes accused of requiring extraordinary conceptual tools for its formulation. In this paper, we put forward systematic characterizations of presentism and expansionism which involve neither the notion of being present nor unfamiliar conceptual tools. These characterizations (...) are full-blown logics, each logic comprising an axiomatic proof system and an intuitive semantics with respect to which the system is both sound and complete. (shrink)

ABSTRACT We critically review two extant paradigms for understanding the systematic interaction between modality and tense, as well as their respective modifications designed to do justice to the contingency of time’s structure and composition. We show that on either type of theory, as well as their respective modifications, some principles prove logically valid whose truth might sensibly be questioned on metaphysical grounds. These considerations lead us to devise a more general logical framework that allows accommodation of those metaphysical views that (...) its predecessors rule out by fiat. (shrink)

I argue that while admission of one's own fallibility rationally requires one's readiness to stand corrected in the light of future evidence, it need have no consequences for one's present degrees of belief. In particular, I argue that one's fallibility in a given area gives one no reason to forego assigning credence 1 to propositions belonging to that area. I can thus be seen to take issue with David Christensen's recent claim that our fallibility has far-reaching consequences for our account (...) of rational belief and epistemic rationality. My arguments inter alia rely on the idea that in basing one's beliefs on one's evidence, one trusts both that one's evidence has the right pedigree and that one gets its probative force right, where such trust can rationally be invested without the need of any further evidence. (shrink)

Nihel Jhou (2021) takes issue with our argument to the conclusion that realism about tense implies realism about temporal passage (Correia and Rosenkranz 2020). Here we review his criticism and defend our conclusion by improving the original argument so as to do justice to the more demanding notion of temporal passage Jhou invokes.

The anti-realist maintains that all thoughts that we may entertain are thoughts whose truth-values we can in principle come to recognise. The realist refuses to make any such claim about the limits of our thinking. The anti-realist purports to arrive at her position on the basis of considerations which relate to the manifestability of understanding, i.e. the idea that grasp of thoughts must be manifested in linguistic abilities. Thus she argues against the realist that this requirement cannot be met unless (...) truth is understood not to extend beyond what we can know. Turning the tables, I argue that it is the antirealist who cannot vindicate her position on these grounds. Some thoughts are apt for objective truth; their truth cannot be equated with their current assertibility. Our grasp of such thoughts is not yet manifested in our ability to assert or deny sentences. Once we have identified patterns of linguistic usage which display our grasp of such thoughts however, it transpires that there is no reason either to believe that their truth-values can in principle be recognised. (shrink)

We present a strategy to dissolve semantic paradoxes which proceeds from an explanation of why paradoxical sentences or their definitions are semantically defective. This explanation is compatible with the acceptability of impredicative definitions, self-referential sentences and semantically closed languages and leaves the status of the so-called truth-teller sentence unaffected. It is based on platitudes which encode innocuous constraints on successful definition and successful expression of propositional content. We show that the construction of liar paradoxes and of certain versions of Curry's (...) paradox rests on presuppositions that violate these innocuous constraints. Other versions of Curry's paradox are shown not to be paradoxical at all once their presuppositions are made explicit. Part of what we say rehearses a proposal originally made by Laurence Goldstein in 1985. Like Goldstein we dispose of certain paradoxes by rejecting some of the premises from which they must be taken to proceed. However, we disagree with his more recent view that the premises to be rejected are neither true nor false. (shrink)

This monograph is a detailed study, and systematic defence, of the Growing Block Theory of time (GBT), first conceived by C.D. Broad. The book offers a coherent, logically perspicuous and ideologically lean formulation of GBT, defends it against the most notorious objections to be found in the extant philosophical literature, and shows how it can be derived from a more general theory, consistent with relativistic spacetime, on the pre-relativistic assumption of an absolute and total temporal order. -/- The authors devise (...) axiomatizations of GBT and its competitors which, against the backdrop of a shared quantified tense logic, significantly improves the prospects of their comparative assessment. Importantly, neither of these axiomatizations involves commitment to properties of presentness, pastness or futurity. The authors proceed to address, and defuse, a number of objections that have been marshaled against GBT, including the so-called epistemic objection according to which the theory invites skepticism about our temporal location. The challenge posed by relativistic physics is met head-on, by replacing claims about temporal variation by claims about variation across spacetime. -/- The book aims to achieve the greatest possible rigor. The background logic is set out in detail, as are the principles governing the notions of precedence and temporal location. The authors likewise devise a novel spacetime logic suited for the articulation, and comparative assessment, of relativistic theories of time. The book comes with three technical appendices which include soundness and completeness proofs for the systems corresponding to GBT and its competitors, in both their pre-relativistic and relativistic forms. -/- The book is primarily directed at researchers and graduate students working on the philosophy of time or temporal logic, but is of interest to metaphysicians and philosophical logicians more generally. (shrink)

We present a strategy to dissolve semantic paradoxes which proceeds from an explanation of why paradoxical sentences or their definitions are semantically defective. This explanation is compatible with the acceptability of impredicative definitions, self-referential sentences and semantically closed languages and leaves the status of the so-called truth-teller sentence unaffected. It is based on platitudes which encode innocuous constraints on successful definition and successful expression of propositional content. We show that the construction of liar paradoxes and of certain versions of Curry’s (...) paradox rests on presuppositions that violate these innocuous constraints. Other versions of Curry’s paradox are shown not to be paradoxical at all once their presuppositions are made explicit. Part of what we say rehearses a proposal originally made by Laurence Goldstein in 1985. Like Goldstein we dispose of certain paradoxes by rejecting some of the premises from which they must be taken to proceed. However, we disagree with his more recent view that the premises to be rejected are neither true nor false. (shrink)

This paper contributes to the current debate about radical scepticism and the structure of warrant. After a presentation of the standard version of the radical sceptic’s challenge, both in its barest and its more refined form, three anti-sceptical responses, and their respective commitments, are being identified: the Dogmatist response, the Conservativist response and the Dretskean response. It is then argued that both the Dretskean and the Conservativist are right that the anti-sceptical hypothesis cannot inherit any perceptual warrants from ordinary propositions (...) about the environment—and so the Dogmatist response founders. However, if this is so Epistemic Closure lacks any clear rationale. There is therefore good reason to agree with both the Dretskean and the Dogmatist that perceptual warrants for ordinary propositions about the environment are enough in order for those propositions to enjoy a positive epistemic status—and so the Conservativist response founders. However, the Conservativist is nonetheless right that a warrant for the anti-sceptical hypothesis is needed. For contrary to what much of the recent literature suggests, the radical sceptic need not appeal to Epistemic Closure in order to cast doubt on the legitimacy of our beliefs in ordinary propositions about the environment: there is a Pyrrhonian version of scepticism that, though equally radical, is consistent with failure of Epistemic Closure. For this reason, the Dretskean response is insufficient to answer scepticism. (shrink)

In light of the paradox of knowability anti‐realists ought to revise their wholesale equation of truth and knowability, lest they be committed to the absurd conclusion that there are no truths that will never be known. The task accordingly becomes to identify the problematic statements the knowability of whose truth would force that conclusion and to restrict the equation in appropriate ways to all but the problematic statements. This restriction strategy was first implemented by Tennant. However, recently Williamson and Brogaard (...) and Salerno have argued that the restriction strategy, and in particular Tennant's implementation of it, fail to avert the paradoxical conclusion. Here I argue, first, that the arguments devised by Brogaard and Salerno are ineffective because they rely on an invalid closure principle and, second, that while Williamson's argument may suffice to undermine Tennant's specific proposal, it fails to discredit the restriction strategy as such. To this end, I give a better characterisation of the problematic cases, which is immune to Williamson's criticism, and then show how the restricted anti‐realist thesis fares in light of the meaning‐theoretical arguments anti‐realists typically advance in support of their view. (shrink)

According to metaphysical realism, there may be features of reality which we cannot conceive. If this thesis of cognitive closure is inconsistent, then, pace dialetheism, metaphysical realism proves incoherent. Recently, Graham Priest has revived Berkeley's idealist argument meant to show that cognitive closure is inconsistent. If cogent, this argument poses a threat to metaphysical realism. I argue that while Priest's reconstruction of Berkeley's argument may be seen to be paradoxical on one interpretation of ‘conceive’, that interpretation is not the intended (...) one. On the intended interpretation, the argument fails and hence leaves metaphysical realism unassailed. (shrink)

Realists claim that, amongst the statements weunderstand, there are some which are true, yetwhose truth potentially transcends the limits ofwhat we can recognize. Dummett and othershave argued that this realist thesis is incompatiblewith an account of understanding in termsof recognitional capacities. But careful analysis revealsthat this contention is mistaken. Thealleged incompatibility presupposes the truth of ametaphysical principle which cannot bevindicated on the basis of an account of understanding.Realists have independent reason toreject this metaphysical principle, as it leads to a collapseof (...) more modest forms of realisminto more contentious ones. According to moderate realism,we neither know that there areactually recognition-transcendent truthsnor do we know taht there are none. Pending apositive case for the metaphysical principle, thisagnosticism is sufficient to warrant therealists' key thesis, viz. that there arepotentially recognition-transcendent truths. Thusrealism, in its more moderate guise, turns outto be the default position. (shrink)

In light of the paradox of knowability anti‐realists ought to revise their wholesale equation of truth and knowability, lest they be committed to the absurd conclusion that there are no truths that will never be known. The task accordingly becomes to identify the problematic statements the knowability of whose truth would force that conclusion and to restrict the equation in appropriate ways to all but the problematic statements. This restriction strategy was first implemented by Tennant. However, recently Williamson and Brogaard (...) and Salerno have argued that the restriction strategy, and in particular Tennant's implementation of it, fail to avert the paradoxical conclusion. Here I argue, first, that the arguments devised by Brogaard and Salerno are ineffective because they rely on an invalid closure principle and, second, that while Williamson's argument may suffice to undermine Tennant's specific proposal, it fails to discredit the restriction strategy as such. To this end, I give a better characterisation of the problematic cases, which is immune to Williamson's criticism, and then show how the restricted anti‐realist thesis fares in light of the meaning‐theoretical arguments anti‐realists typically advance in support of their view. (shrink)

In a series of recent papers, Crispin Wright has developed and defended an epistemic account of borderline cases which he calls ‘Liberalism’. If Verdict Exclusion is the claim that no polar verdict on borderline cases is knowledgeable, then Liberalism implies the view that Verdict Exclusion is itself nothing we are in a position to know. It is a matter of ongoing discussion what more Liberalism implies. In any case, Wright argues that Liberalism affords the means to account for the intuition (...) that polar verdicts on borderline cases are equally permissible. Here I argue that Liberalism fails to deliver and that an account of borderline cases based on Verdict Exclusion fares much better when it comes to showing that our ordinary practice of reaching verdicts on borderline cases is fully legitimate: all it needs is a reassessment of the nature of the claims such verdicts express. (shrink)

In this paper, I present an argument for the revision of classical logic. The argument is based on the coherence of a metaethical position which is a species of agnosticism. According to this view, the debate between cognitivists and noncognitivists about moral discourse is unresolved. I argue that there is something at stake in this debate and so something one can coherently be agnostic about. The revisionary argument also draws on principles of epistemic closure. I make these principles explicit and (...) indicate to what extent they can plausibly be assumed. The proposal to revise classical logic is likely to meet with some resistance: classical logic is too deeply entrenched in our reasoning. Before suggesting what to put in its place, I address and defuse four objections that might be levelled against the argument for its revision. I close with some general remarks on the force of arguments for logical reform. (shrink)

In this paper, I present an argument for the revision of classical logic. The argument is based on the coherence of a metaethical position which is a species of agnosticism. According to this view, the debate between cognitivists and noncognitivists about moral discourse is unresolved. I argue that there is something at stake in this debate and so something one can coherently be agnostic about. The revisionary argument also draws on principles of epistemic closure. I make these principles explicit and (...) indicate to what extent they can plausibly be assumed. The proposal to revise classical logic is likely to meet with some resistance: classical logic is too deeply entrenched in our reasoning. Before suggesting what to put in its place, I address and defuse four objections that might be levelled against the argument for its revision. I close with some general remarks on the force of arguments for logical reform. (shrink)

We conceive of many general terms we use as having satisfaction conditions that are objective in that the thought that something meets them neither entails nor is entailed by the thought that we are currently in a position in which we are ready, or warranted, to apply those terms to it. How do we manage to use a given term in such a way that it is thereby endowed, and conceived to be endowed, with satisfaction conditions that are objective in (...) this sense? In the first half of the paper, I present a number of interrelated problems for some extant metasemantical accounts of how use determines objective satisfaction conditions. In the second half, I then propose a novel account that avoids all of these problems. (shrink)

This chapter responds to criticismsmade in Volume 8 of this series, in reply to another chapter of that volume. The initial chapter resurrected the Growing Block Theory from its grave, devising a coherent formulation of it and arguing that its burial was premature. It aimed to show that GBT has the wherewithal to explain how we might easily come to know that we are living on the edge of reality posited by GBT. Braddon-Mitchell, in the reply, remained unconvinced. His objections (...) are addressed here. (shrink)

Fabrice Correia and Sven Rosenkranz’s book Nothing to Come: a Defence of the Growing Block Theory of Time offers an incredibly rich and skillful defense of the growing block theory (GBT), a view of time that arguably has much intuitive appeal, and which has been under attack from many sides. Nonetheless, I have to report that the book’s tense-logical course of treatment has not worked for me; I still struggle with making sense of the GBT. This article begins (...) by drawing out some implications of the book’s set up. First, the notion of existence in play here is not interpretable on the basis of ordinary usage. Second, it would be a mistake to take the tense-logical framework to have any metaphysical significance. I then articulate two main worries about their version of the GBT. The first worry takes a familiar shape: it is just hard to see how their view is dynamic in the relevant sense. The second worry is that the topic seems to have been changed. C&R’s logical system helps itself to key notions whose intended interpretation includes a solution to every metaphysical puzzle about the GBT, so that these puzzles are not so much addressed as enshrined in a formal system. That is, their view seems to answer the question of how language should behave, if the GBT were (somehow) true. (shrink)

When is it morally acceptable to expose others to risk? Most moral philosophers have had very little to say in answer to that question, but here is a moral philosopher who puts it at the centre of his investigations.

An alarming number of philosophers and cognitive scientists have argued that mind extends beyond the brain and body. This book evaluates these arguments and suggests that, typically, it does not. A timely and relevant study that exposes the need to develop a more sophisticated theory of cognition, while pointing to a bold new direction in exploring the nature of cognition Articulates and defends the “mark of the cognitive”, a common sense theory used to distinguish between cognitive and non-cognitive processes Challenges (...) the current popularity of extended cognition theory through critical analysis and by pointing out fallacies and shortcoming in the literature Stimulates discussions that will advance debate about the nature of cognition in the cognitive sciences. (shrink)