I argue that Fitch’s ‘paradox of knowability’ presents no special problem for the epistemic anti-realist who believes that reality is epistemically accessible to us. For the claim which is the target of the argument (If p then it is possible to know p) is not a commitment of anti-realism. The epistemic anti-realist’s commitment is (or should be) to the recognizability of the states of affairs which render true propositions true, not to the knowability of (...) the propositions themselves. A formal apparatus for discussing the recognizability of states of affairs is offered, and other prima facie similar approaches to the paradox argument are reviewed. (shrink)

Marton ( 2019 ) argues that that it follows from the standard antirealist theory of truth, which states that truth and possible knowledge are equivalent, that knowing possibilities is equivalent to the possibility of knowing, whereas these notions should be distinct. Moreover, he argues that the usual strategies of dealing with the Church–Fitch paradox of knowability are either not able to deal with his modal-epistemic collapse result or they only do so at a high price. Against this, I argue (...) that Marton’s paper does not present any seriously novel challenge to anti-realism not already found in the Church–Fitch result. Furthermore, Edgington ( 1985 ) reformulated antirealist theory of truth can deal with his modal-epistemic collapse argument at no cost. (shrink)

The ability to observe is the ability to reliably detect, but that is not all observation is. A thermometer reliably detects temperature yet does not observe the temperature, whereas I do, even though in terms of reliability I cannot match the thermometer. An observation is detection accompanied by active classification and, typically, the subsequent formation of opinion. Even when we say of an animal that it can see something we mean more than that it reliably detects things of a certain (...) sort but also that it deals with such things as objects, gauging their usefulness or lack thereof in relation to its interests and to other aspects of the world. This crucial addendum to the notion of observation can be enshrined in slogan: observers are potential believers. This marks the difference between mere detecting mechanisms and observers.The contemporary scientific anti-realism of one such as van Fraassen, which is developed in detail under the label of “constructive empiricism” in van Fraassen (1980), can be characterized in terms of detecting mechanisms. (shrink)

The central aim of this article is to argue that Nietzsche takes his own taste, and those in the relevant sense similar to it, to enjoy a kind of epistemic privilege over their rivals. Section 2 will examine the textual evidence for an anti-realist reading of Nietzsche on taste. Section 3 will then provide an account of taste as an ‘affective evaluative sensibility’, asking whether taste so understood supports an anti-realist reading. I will argue that it does (...) not and that we should resist construing the affects, which constitute taste for Nietzsche, as no more than Humean subjective preferences. Section 4 will then consider passages in which Nietzsche makes a connection between taste and epistemic considerations, suggesting that he appears to situate the epistemic privilege of his taste in a more fundamental method of evaluative disclosure, namely pre-reflective affective responses. Finally, Section 5 will argue that we can make sense of how such affective responses could provide us with evaluative knowledge by narrowing the scope of the objects of Nietzsche’s taste to other affective-evaluative states, such that the affective responses are meta-affective evaluations. On the basis of this idea, I construct a theory of meta-affective responses providing their subjects with access to the intrinsic phenomenal value of other affective-evaluative states, and then go on to show how Nietzsche can be read as applying this theory in a number of passages. (shrink)

Anti-realistic conceptions of truth and falsity are usually epistemic or inferentialist. Truth is regarded as knowability, or provability, or warranted assertability, and the falsity of a statement or formula is identified with the truth of its negation. In this paper, a non-inferentialist but nevertheless anti-realistic conception of logical truth and falsity is developed. According to this conception, a formula (or a declarative sentence) A is logically true if and only if no matter what is told about what (...) is told about the truth or falsity of atomic sentences, A always receives the top-element of a certain partial order on non-ontic semantic values as its value. The ordering in question is a told-true order. Analogously, a formula A is logically false just in case no matter what is told about what is told about the truth or falsity of atomic sentences, A always receives the top-element of a certain told-false order as its value. Here, truth and falsity are pari passu , and it is the treatment of truth and falsity as independent of each other that leads to an informational interpretation of these notions in terms of a certain kind of higher-level information. (shrink)

I defend an inference to the best explanation (IBE) argument for anti-realism about reasons for acting based on the history of intractable disagreement in moral philosophy. The four key premises of the argument are: 1. If there were objective reasons for action, epistemically-well-situated observers would eventually converge upon them after two thousand years; 2. Contemporary philosophers, as the beneficiaries of two thousand years of philosophy, are epistemically well-situated observers; 3. Contemporary philosophers have not converged upon reasons for action; (...) 4. Conclusion: there are no objective reasons for action (IBE from the first three premises). The key premises of the IBE are (1) sentimentalism; (2) non-cognitivism about basic affects; and (3) philosophical arguments for what our reasons for action are always involve arguments that depend on a basic intuitive moral judgment (that can be explained in terms of a basic non-cognitive affect). All these premises are explored in detail, and various objections addressed. (shrink)

Hilary putnam, In "reason, Truth, And history", Defends a strong version of antirealism--Roughly, The doctrine that the world is in some way mind-Dependent. Putnam's argument to this conclusion is discussed and found to depend on the unwarranted assumption that causal relations required to fix the content of states of mind must themselves be mind-Dependent. The assumption may be abandoned, But doing so amounts to the abandonment of the strong version of antirealism.

I argue that the implementation of theDummettian program of an ``anti-realist'' semanticsrequires quite different conceptions of the technicalmeaning-theoretic terms used than those presupposed byDummett. Starting from obvious incoherences in anattempt to conceive truth conditions as assertibilityconditions, I argue that for anti-realist purposesnon-epistemic semantic notions are more usefully kept apart from epistemic ones rather than beingreduced to them. Embedding an anti-realist theory ofmeaning in Martin-Löf's Intuitionistic Type Theory(ITT) takes care, however, of many notorious problemsthat have arisen (...) in trying to specify suitableintuitionistic notions of semantic value,truth-conditions, and validity, taking into accountthe so-called ``defeasibility of evidence'' forassertions in empirical discourses. (shrink)

Using a quantified propositional logic involving the operators it is known that and it is possible to know that, we formalize various interesting philosophical claims involved in the realism debate. We set out inferential rules for the epistemic modalities, ranging from ones that are obviously analytic, to ones that are epistemologically more substantive or even controversial. Then we investigate various aporias for the realism debate. These are constructively inconsistent triads of claims from our list: a claim expressing (...) some sort of common ground in the debate; a characteristically anti-realist thesis about truth and knowability; and a characteristically realist thesis about determinacy of truth value. Various patterns of reductio proof for these inconsistent triads are generated, so as to display their variety. The reductio proofs use only the inferential rules set out earlier. The philosophical utility of each aporia for the anti-realist is then assessed. This involves consideration of the acceptability of the premiss expressing common ground; the strength and plausibility of the anti-realist premiss; the strength of the realist premiss that is the ultimate target of the reductio; and the analytic status of the inferential rules applied within the proof. (shrink)

I distinguish Local Constructivism (humans play a constitutive role in constructing some of the objects we have epistemic access to) from Global Constructivism (humans play a constitutive role in constructing all of the objects we have epistemic access to). I explicate and clarify Local Constructivism and show how the metaphysical concerns which motivate endorsing Local Constructivism about some objects (e.g. social objects, modal objects) differ from the epistemic and semantic concerns which motive endorsing Global Constructivism. I, then, (...) examine the criticisms Realists typically present against Constructivism. I argue that, although these criticisms undermine Global Constructivism, Local Constructivism is immune to them. If one has anti-Realist inclinations, but wishes to avoid the morass anti-Realism usually falls into (aka: anti-Realist Boogeyman), one should endorse Local, rather than Global, Constructivism. (shrink)

The debate between scientific realism and anti-realism remains at a stalemate, making reconciliation seem hopeless. Yet, important work remains: exploring a common ground, even if only to uncover deeper points of disagreement and, ideally, to benefit both sides of the debate. I propose such a common ground. Specifically, many anti-realists, such as instrumentalists, have yet to seriously engage with Sober's call to justify their preferred version of Ockham's razor through a positive account. Meanwhile, realists face a (...) similar challenge: providing a non-circular explanation of how their version of Ockham's razor connects to truth. The common ground I propose addresses these challenges for both sides; the key is to leverage the idea that everyone values some truths and to draw on insights from scientific fields that study scientific inference—namely, statistics and machine learning. This common ground also isolates a distinctively epistemic root of the irreconcilability in the realism debate. (shrink)

The decision whether to have a realist or an anti-realist attitude towards scientific hypotheses is interpreted in this paper as a choice that scientists themselves have to face in their work as scientists, rather than as a ‘philosophical’ problem. Scientists’ choices between realism and instrumentalism (or other types of anti-realism) are interpreted in this paper with the help of two different conceptual tools: a deflationary semantics grounded in the inferentialist approach to linguistic practices developed by some (...) authors (e.g., Sellars, Brandom), and an epistemic utility function that tries to represent the cognitive preferences of scientists. The first tool is applied to two different questions traditionally related to the problem of scientific realism: the non-miracle argument, and the continuity of reference. The second one is applied to the problem of unconceived alternatives, and to the distinction between realist and instrumentalist attitudes towards scientific hypotheses. (shrink)

In this paper I attempt to clarify a relatively little-studied aspect of Michael Dummett's argument for intuitionism: its use of the notion of ‘undecidable’ sentence. I give a new analysis of this concept in epistemic terms, with which I resolve some puzzles and questions about how it works in the anti-realist critique of classical logic.

“Philosophical perspectivism” is surely one of Nietzsche's most important insights regarding the limits of human knowledge. However, the perspectivist thesis combined with a minimal realist metaphysical position produces what Brian Leiter calls the 'Received View': an epistemologically incoherent misinterpretation of Nietzsche which pervades the secondary literature. In order to salvage the thesis of perspectivism, Leiter argues that we must commit Nietzsche to an anti-realist metaphysical position. I argue that Leiter's proposed solution is (1) epistemically weak, and (2) inconsistent with (...) much of Nietzsche's views on truth, knowledge and the psychological make-up of human beings. I argue that we need to abandon the scheme/content distinction on which both the Received View and Leiter's anti-realist construal of perspectivism are predicated and instead construe perspectives as environments of power. (shrink)

This paper argues that some defenses of global antirealism that critique both epistemic foundationalism and ontological priority foundationalism (e.g., Westerhoff 2020) turn on a false dilemma that ignores non-representational approaches to consciousness and cognition. Arguments against the existence of an external world and against introspective certainty, typically draw on a range of empirical findings (mainly about the brain-based mechanisms that realize cognition) and that are said to lend support to irrealism. Theories that incorporate these findings, such as the interface (...) theory of perception and predictive processing, not only retain the notion of the veil of perception, but have continued to assign to it an important theoretical role. While the mathematical frameworks these theories employ do make them viable candidates, neither theory is moving in a direction that would suggest global anti-realism is the more plausible attitude. Rather, I argue that the new paradigm of 4E cognitive science (embodied, embedded, enactive, extended) bolsters epistemological and metaphysical realism. (shrink)

In Meaning and Necessity (1947/1950), Carnap advances an intensional semantic framework on which modal claims are true in virtue of semantical rules alone, and so are a priori. In 'Empiricism, Semantics, and Ontology' (1950), Carnap advances an epistemic-ontological framework on which metaphysical claims are either trivial or meaningless, since lacking any means of substantive confirmation. Carnap carried out these projects two decades before Kripke influentially argued, in Naming and Necessity (1972/1980), that some modal claims are true a posteriori. How (...) should a neo-Carnapian respond to Kripke's results? Some (notably, Chalmers and Jackson, in their 2001) have suggested that an extension of intensional semantics along lines of "epistemic two-dimensionalism" can accommodate Kripke's results while largely preserving commitment to the semantics-based a priority of modal claims. Here we consider how best to implement this suggestion, and how the resulting semantics fits with Carnap's second project. We find that the most promising (and most Carnapian!) post-Kripke version of Carnap’s semantics---abductive two-dimensionalism---presupposes an epistemology which undermines Carnap's metaphysical anti-realism. (shrink)

This critical survey of recent work on Kant's doctrine of the fact of reason and his doctrine of the practical postulates (of freedom, God, and immortality) assesses the implications of these doctrines for the debate about realism and antirealism in Kant's moral philosophy. Section 1 briefly surveys some salient considerations from the first Critique and Groundwork. In section 2, I argue that recent work on the role, content, "factual" nature, and epistemic status of the fact of reason does (...) not support an anti-realist interpretation of Kant's ethics. In section 3, I argue that recent work on the derivation and epistemic and ontological status of the practical postulates does not support an anti-realist interpretation of Kant's ethics. (shrink)

A common anti-realist strategy is to argue that moral realism (or at least the non-naturalist form of it) should be abandoned because it cannot adequately make room for moral knowledge and justified moral belief, for example in view of an evolutionary account of the origins of moral beliefs or of the existence of radical moral disagreement. Why is that (alleged) fact supposed to undermine realism? I examine and discuss three possible answers to this question. According to the (...) answer that I think holds most promise, it undermines realism because it renders realism “epistemically incoherent” (in a sense explicated in the paper), and a central aim of the paper is to elaborate and defend that suggestion against certain objections. I end by briefly commenting on the more general significance of the discussion, by considering some other areas (epistemology and vagueness) where similar questions might be raised. (shrink)

Anti-realism was first introduced by Michael Dummett. He famously preferred to reduce issues about common sense metaphysics to issues about our statements and especially assertions about a certain sort of subject matters, such as those about the past, the physical world, and so on. On the basis of his view of metaphysical problems, he believes that we should initially choose an appropriate model of meaning and a proper conception of the notion of truth applicable to such linguistic statements. (...) By doing so, the dispute between realism and anti-realism can be rendered to a disagreement on the kind of meaning such statements may have. After criticizing the realist view, he goes on to claim that without having proper evidence, we cannot judge about the truth-value of our linguistic statements. To understand a sentence, according to Dummett, is to have the capacity of recognizing what would be counted as evidence for or against its truth. Therefore, an anti-realist believes that there can be no guarantee for every sentence to be true, independently of our epistemic capabilities and other relevant abilities. An advocate of realism, by contrast, admits the principle of bivalence and believes that all sentences are either true or false in terms of the reality which exists independently of us. In this essay, after introducing Dummett’s anti-realist view and his criticisms of realism, I am going to discuss the relationship between his desired theory of meaning and his view of anti-realism. (shrink)

This article has three objectives. The first is to show the inevitable ambiguity between realism and idealism in Kant’s work. The second is to show the nature of Kantian realism as his response to the skeptic and a reflection on the objective distinctness of representations. The version of empirical reality proposed as the answer to the skeptic, however, has overt elements of anti-reality: it is built in the tension between the idea of proof and the idea of (...) truth. Kant employs the theory of apperception and judgment, which functions by generating pure conceptual parameters (categories) to address this tension. The manner in which Kant’s theory of apperception and judgment offers solutions to the challenge of aligning truth and proof is in line with epistemic, anti-realistic, anti-metaphysical, and non-classical approaches to logical representation (which aligns with Kant’s transcendental logic). Lastly, we will present an overview of the discourse surrounding the nature of Kantian empirical realism and compare it to the version of “reality” advocated by metaphysical perspectives, empirical science, and common sense. (shrink)

This article offers a critical perspective on two lines of thought in recent epistemology and philosophy of science, namely Michael Dummett?s anti-realist approach to issues of truth, meaning, and knowledge and Bas van Fraassen?s influential programme of?constructive empiricism?. While not denying the salient differences between them it shows how they converge on a sceptical outlook concerning the realist claim that truth might always transcend the restrictions of some given state of knowledge. The author puts the case that such sceptical (...) arguments, if followed through consistently, must involve giving up all claim to account for our knowledge of the growth of scientific knowledge. He also takes issue with Dummett?s idea of truth as nothing more than a matter of?warranted assertibility? and with van Fraassen?s likewise verificationist conception of empirical warrant as the most we can have by way of epistemic justification. Thus it is wrong to suppose that the realist is merely indulging in a display of? courage not under fire? when she assumes ontological commitments in excess of the observational data. This disavowal of realism in favour of a theory which?saves the appearances? has a less-than-distinguished prehistory in the range of compromise strategies adopted by upholders of a dominant metaphysics or world-view, starting out with the orthodox Catholic attempt to defuse the implications of the heliocentric hypothesis advanced by Copernicus and Galileo. Such theological motives are nowadays not so prominent although? it is suggested fithey do emerge at certain points in Dummett?s writing. More constructively, this article presents a case for objectivism with regard to scientific truth and also for inference to the best causal explanation on both the micro- and the macrophysical scale as the only approach with an adequate claim to make sense of the history of advancements in scientific knowledge to date. (shrink)

Antirealism about the past is apparently in conflict with our acceptance of a set of systematic linkages between the truth-values of differently tensed sentences made at different times. Arguments based on acceptance of these so-called truth-value links seem to show that fully accounting for our use of the past and future tenses will involve use of a notion of truth which is not epistemically constrained and is thus antirealistically unacceptable. I elaborate these difficulties through an examination of work by Dummett (...) and Wright. I agree with Wright's rejection of Dummett's proposal but go on to argue that Wright's account fares no better. Building on what I take to be the failure of Wright's account, I offer a solution for the antirealist which diagnoses the problem as stemming from an equivocation in the meanings assigned to the tensed truth predicates. I close by raising a different problem for antirealist accounts of the past, one which is, however, related to more general difficulties for antirealist theories of meaning. (shrink)

In this thesis, I investigate realist, anti-realist and pluralist views in the philosophy of science and the philosophy of complexity. The philosophy of science can inform the philosophy of complexity and vice versa because we can consider scientific inquiry to largely involve the study of complex systems. I however find that the relevant realist, anti-realist and pluralist views are problematic in various ways, and that a version of pragmatism suggests a promising alternative. This version of pragmatism incorporates elements (...) of pluralism, but maintains a commitment to epistemic hierarchy, convergence and progress. The way to develop such a version of pragmatism is, I argue, by rebooting William Whewell’s 19th century philosophy of science. Whewell however held to the following two transcendental claims: 1. Empirical inquiry undertaken in science properly practiced can reveal necessary truths. 2. The revelation of such necessary truths grants us a glimpse of the mind of God. Such transcendental claims are obviously at odds with pragmatism. There are however core features of Whewell’s view that are notably pragmatist in nature, features that explicitly inspired Charles Sanders Piece’s convergent pragmatism. These are as follows: 3. Subject and object (or mind and world) are inextricably entwined during scientific inquiry; they are not separated by anything like a correspondence relationship. 4. Science progresses via what Whewell calls the consilience of inductions (an ongoing merging of scientific theories, a merging that increases our understanding of the world over time). I modify Whewell’s view by stripping away its transcendental elements while maintaining its pragmatist elements. What remains is, I argue, a robust and novel kind of pragmatism suitable for being introduced into the contemporary philosophy of science. Whewell suitably-pragmatised can offer new insights into ongoing debates, particularly those around the nature of scientific progress, scientific truth and scientific understanding. (shrink)

This paper aims to describe and defend a Pluralistic Kantian, as opposed to a Tractarian, version of realism vis-à-vis the ontological basis of truthmaking relations. One underlying assumption of my position is that propositional truth is a robust property and, consequently, is normatively distinct from epistemic justification. Still, it does not follow from this realist contention that truth is generated ontologically, viz., independently of cognitive and intensional contributions of human agents. This point brings my view notably close to (...) H. Putnam’s peculiar blend of certain Wittgensteinian and Kantian themes. However, I argue that Putnam’s apparent denial of the in-itself reality with an intrinsic structure gives rise to a rather un-Kantian and problematic metaphysical picture. I suggest that the solution to the puzzle may be found in a synthesis of the best intuitions of Armstrong’s Tractarian realism and Putnam’s quasi-Kantianism. (shrink)

This book contains twelve chapters by leading and up-and-coming philosophers on metaepistemology, that is, on the nature, existence and authority of epistemic facts. One of the central divides in metaepistemology is between epistemic realists and epistemic anti-realists. Epistemic realists think that epistemic facts exist independently of human judgements and practices, and that they have authority over our judgements and practices. Epistemic anti-realists think that, if epistemic facts exist at all, they are (...) grounded in human judgements and practices, and gain any authority they have from our judgements and practices. This book considers both epistemic realist and anti-realist perspectives, as well as perspectives that 'transcend' the realism/anti-realism dichotomy. As such, it constitutes the 'state of the art' with regard to metaepistemology, and will shape the debate in years to come. (shrink)

Response‐dispositional (RD) properties are standardly defined as those that involve an object's appearing thus or thus to some perceptually well‐equipped observer under specified epistemic conditions. The paradigm instance is that of colour or other such Lockean “secondary qualities”, as distinct from those—like shape and size—that pertain to the object itself, quite apart from anyone's perception. This idea has lately been thought to offer a promising alternative to the deadlocked dispute between hard‐line ‘metaphysical’ realists and subjectivists, projectivists, social constructivists, or (...) hard‐line anti‐realists. A chief source text is Plato's Euthyphro, where the issue is posed in ethical terms: do the gods infallibly approve virtuous acts on account of their divine moral omniscience or are virtuous acts just those the gods approve? Among the areas proposed as amenable to an RD approach are epistemology, ethics, political theory, and philosophy of mathematics. It is claimed that by making due allowance for the involvement of normalised or optimised human responses one can steer a course between the twin poles of an objectivist realism that places truth beyond our cognitive grasp and an epistemic conception that confines truth within the limits of humanly attainable proof, knowledge, or verification. Here I argue—on the contrary—that RD approaches can be shown to offer nothing more than a variant of the same old realist versus anti‐realist dilemma. That is, they work out either as a trivial (tautologous) claim that ‘truth’ simply equates with ‘best judgement’ in the ideal (quasi‐objective) limit or as the claim—advanced by anti‐realists like Michael Dummett—that we cannot form any adequate conception of objective (recognition‐transcendent) truths. After looking at this issue in various contexts of debate, I conclude that one useful (if pyrrhic) outcome is to demonstrate the non‐availability of any middle‐ground stance. We are left with the strictly unavoidable choice between a realist or objectivist approach and one that assimilates truth to the consensus of accredited best opinion. This latter amounts to a roundabout, elaborately qualified version of the anti‐realist case. (shrink)

Some naturalistic philosophers of mind subscribing to the predictive processing theory of mind have adopted a realist attitude towards the results of Bayesian cognitive science. In this paper, we argue that this realist attitude is unwarranted. The Bayesian research program in cognitive science does not possess special epistemic virtues over alternative approaches for explaining mental phenomena involving uncertainty. In particular, the Bayesian approach is not simpler, more unifying, or more rational than alternatives. It is also contentious that the Bayesian (...) approach is overall better supported by the empirical evidence. So, to develop philosophical theories of mind on the basis of a realist interpretation of results from Bayesian cognitive science is unwarranted. Naturalistic philosophers of mind should instead adopt an anti-realist attitude towards these results and remain agnostic as to whether Bayesian models are true. For continuing on with an exclusive focus and praise of Bayes within debates about the predictive processing theory will impede progress in philosophical understanding of scientific practice in computational cognitive science as well as of the architecture of the mind. (shrink)

Realists and anti-realists disagree about whether contemporary scientists are epistemically privileged. Because the issue of epistemic privilege figures in arguments in support of and against theoretical knowledge in science, it is worth examining whether or not there is any basis for assuming such privilege. I show that arguments that try to explain the success of science by appeal to some sort of epistemic privilege have, so far, failed. They have failed to give us reason to believe (i) (...) that scientists are prone to develop theories that are true, (ii) that our current theories are not apt to be replaced in the future, and (iii) that science is nearing its completion. (shrink)

This essay offers a critical appraisal of some claims recently advanced by Crispin Wright and others in support of a response-dispositional (RD) approach to issues in epistemology, ethics, political theory, and philosophy of the social sciences. These claims take a lead from Plato's discussion of the status of moral value-judgements in the Euthyphro and from Locke's account of 'secondary qualities' such as colour, texture and taste. The idea is that a suitably specified description of best opinion (or optimal response) for (...) some given area of discourse will provide all that is needed in the way of objectivity while avoiding the problems raised by anti-realists like Michael Dummett with respect to the existence of truth-values that transcend our utmost powers of recognition or verification. I focus on three main areas - mathematics, morals and constitutional law - and argue that an RD approach falls short in certain crucial respects. That is to say, it works out either as a trivial (tautological) claim to the effect that 'best judgement' cannot - per definiens - diverge from truth under conditions of idealized epistemic warrant, or as an approach that leans strongly towards the anti-realist side of the argument. Thus the promised 'third way' - here as in other present-day contexts of debate - most often carries no substantive implications for our thinking about truth, moral virtue, or justice. Elsewhere, especially when applied to juridical matters, it lays chief stress on the truth-constitutive role of human judgements or responses, and hence the impossibility of appealing to standards of natural justice beyond some existing highest authority or source of constitutional warrant. This point is made with specific reference to recent events surrounding the 'election' (or leverage-into-office) of President George W. Bush. In such cases, I conclude, an RD approach would tend strongly to endorse the view that 'best opinion' - as enshrined, say, in the deliverance of US Supreme Court justices - is the furthest we can get towards an adequate assessment of the moral and political issues. Key Words: anti-realism • ethics • judgement • mathematics • political theory • realism • response-dependence. (shrink)

Epistemic theories of truth, such as those presumed to be typical for anti-realism, can be characterised as saying that what is true can be known in principle: p → ◊Kp. However, with statements of the form “p & ¬Kp”, a contradiction arises if they are both true and known. Analysis of the nature of the paradox shows that such statements refute epistemic theories of truth only if the the anti-realist motivation for epistemic theories of (...) truth is not taken into account. The motivation in a link of understandability ans meaningful- ness suggests to change the above principle and to restrict the theory to logically simple sentences, in which case the paradox does not arise. This suggestion also allows to see the deep philosophical problems for anti-realism those counterexamples are pointing at. (shrink)

In this paper I attempt to show how Moore’s early emancipation from Bradley’s absolute idealism presupposes a fundamental adherence to certain theses of absolute idealism itself. In particular, I argue that the idea of an immediate epistemic access to concepts and propositions that Moore endorses in his platonic atomism is a reworking of a form of epistemic realism already present in Bradley. Epistemic realism is the conjunction of two theses: i) reality is independent of any (...) constructive work of the human mind; ii) reality is immediately accessible to knowledge. In this paper I first focus on Moore’s early idealist phase, suggesting that it should be understood as an attempt at isolating this thesis in Bradley against Kant’s transcendental idealism. I then suggest that it is on the background of an invariant adherence to it that we should understand Moore’s later rejection of monism and idealism through his anti-psychologism. I hence explore how epistemic realism is at work in Moore’s platonic atomism and conclude with some remarks about the further significance of Moore’s rejection of Kant. (shrink)

What is the appropriate notion of truth for sentences whose meanings are understood in epistemic terms such as proof or ground for an assertion? It seems that the truth of such sentences has to be identified with the existence of proofs or grounds, and the main issue is whether this existence is to be understood in a temporal sense as meaning that we have actually found a proof or a ground, or if it could be taken in an abstract, (...) tenseless sense. Would the latter alternative amount to realism with respect to proofs or grounds in a way that would be contrary to the supposedly anti-realistic standpoint underlying the epistemic understanding of linguistic expressions? Before discussing this question, I shall consider reasons for construing linguistic meaning epistemically and relations between such reasons and reasons for taking an anti-realist point of view towards the discourse in question. (shrink)

One typical realist response to the argument from underdetermination of theories by evidence is an appeal to epistemic criteria besides the empirical evidence to argue that, while scientific theories might be empirically equivalent, they are not epistemically equivalent. In this article, I spell out a new and reformulated version of the underdetermination argument that takes such criteria into account. I explain the notion of epistemic equivalence which this new argument appeals to, and argue that epistemic equivalence can (...) be achieved in several, significantly different, ways. On the basis of this ‘multiple realisability’ of epistemic equivalence, I then proceed to explain and examine some of the main consequences of this reformulated underdetermination argument for both realists and anti-realists. (shrink)

Allan Hazlett has recently developed an alternative to the most popular form of anti-realism about epistemic normativity, epistemic expressivism. He calls it “convention-relativism about epistemic discourse”. The view deserves more attention. In this paper, I give it attention in the form of an objection. Specifically, my objection turns on a distinction between inescapable and categorical norms. While I agree with Hazlett that convention-relativism is consistent with inescapable epistemic norms, I argue that it is not (...) consistent with categorical epistemic norms. I then argue that Hazlett's account of a controversial upshot of convention-relativism – namely, that epistemic discourse is not “normative” – should, but does not, adequately address the question of whether epistemic norms are categorical. This leads to a more general discussion of anti-realism in epistemology. (shrink)

This study investigates the epistemic role and value of prediction in science: do predictions, and what kind of predictions, justify belief in scientific theories? In the philosophy of science, the epistemic role of prediction has been understood mainly in terms of novel prediction. Scientific theories are considered to gain special epistemic support if they predict novel empirical results that were not used in their construction. This view has played a central role in two debates in the field: (...) prediction vs. accommodation and scientific realism vs. anti-realism. In the former debate, predictivists seek to explain why novel predictions confirm the theory more strongly than accommodations, i.e. empirical results that were used in the construction of the theory. In the latter debate, predictivists argue that novel prediction is one of the most important criteria of empirical success that justifies realist commitment to scientific theories. -/- . (shrink)

In this paper, I argue (i) that there are certain methodological practices that are epistemically significant, and (ii) that we can test for the success of these practices empirically by examining case-studies in the history of science. Analysing a particular episode from the history of medicine, I explain how this can help us resolve specific cases of underdetermination. I conclude that, while the anti-realist is (more or less legitimately) able to construct underdetermination scenarios on a case-by-case basis, he will (...) have to abandon the strategy of using algorithms to do so, thus losing the much needed guarantee that there will always be rival cases of the required kind. (shrink)

This paper attempts to delineate a kind of realism, which incorporates some anti-realistic insights regarding the perspective, situated, and historical character of our forms of knowing and being in the world, and which resonates with the basic tenets of Christian theism. The first part of the paper analyzes the challenges anti-realism poses to Christian theism, particularly regarding the role, which the doctrine of creation played in securing the correspondence theory of truth as well as the fundamental (...) experience of God as the foundation of order and meaning. Using Heidegger’s hermeneutics in the second part, it is shown that epistemic pluralism can be made compatible with realism. Given that this form of hermeneutic realism still has problems with integrating the transcendence of God, as well as his/ her presence and action in the “world,” the notion of continuous co-creation as the basis for a pluralist realism that is amenable to Christian theism is explored in the final part. (shrink)

Among scientific realists and anti-realists, there is a well-known, perennial dispute about the reality and knowability of unobservable objects. This dispute is also present among structural realists, who all agree that science gives us genuine knowledge of structure at the unobservable level (however that structure may be understood). Ontic structural realists reduce or eliminate the ontological role of objects, while epistemic structural realists argue that objects do or might exist but are unknowable. In part because ontic structural (...) class='Hi'>realism has some evidence from quantum mechanics and the consequent underdetermination of the metaphysics of objects in its favor, the majority of contemporary structural realists adopt that view. In contrast, I argue that epistemic structural realism is a highly compelling view, particularly in the form that remains agnostic about unobservable objects. This view can remain consistent with the empirical data from quantum mechanics, can give a satisfactory account of the metaphysics of structure, and can distinguish itself from other extant versions of realism. I provide two arguments in favor of agnosticism about objects, the first of which argues that suspending belief is consistent with the impetus of naturalized metaphysics, and the second of which argues that agnosticism about objects is a rational response to reflection on the limits and aims of science. Thus, I show that agnostic epistemic structural realism is a defensible and compelling view in the philosophy of science that demands more attention in the literature. (shrink)

My target is the epistemological dimension of the realism debate. After establishing a stance voluntarist framework with a Jamesian background, drawing mostly on Wylie, Chakravarty, and van Fraassen, I argue that current voluntarists are too permissive. I show that especially various anti-realist stances but also some realist and selective realist stances block themselves from refutation by the history of science. I argue that such stances should be rejected. Finally, I propose that any disagreement that cannot be resolved by (...) this strategy frequently boils down to an epistemic value disagreement about balancing the truth-goal. (shrink)

b>. Recent findings in cognitive science suggest that the epistemic subject is more complex and epistemically porous than is generally pictured. Human knowers are open to the world via multiple channels, each operating for particular purposes and according to its own logic. These findings need to be understood and addressed by the philosophical community. The current essay argues that one consequence of the new findings is to invalidate certain arguments for epistemic anti-realism.

In this paper, I argue that the ultimate argument for Scientific Realism, also known as the No-Miracles Argument (NMA), ultimately fails as an abductive defence of Epistemic Scientific Realism (ESR), where (ESR) is the thesis that successful theories of mature sciences are approximately true. The NMA is supposed to be an Inference to the Best Explanation (IBE) that purports to explain the success of science. However, the explanation offered as the best explanation for success, namely (ESR), fails (...) to yield independently testable predictions that alternative explanations for success do not yield. If this is correct, then there seems to be no good reason to prefer (ESR) over alternative explanations for success. (shrink)

In this paper, I present a critique of taxonomic pluralism, namely the view that there are multiple correct ways to classify entities into natural kinds within a given scientific domain. I argue that taxonomic pluralism, as an anti-essentialist position, fails to provide a realist alternative to taxonomic monism, i.e., the view that there is only one correct way to classify entities into natural kinds within a given scientific domain. To establish my argument, I first explain why the naturalist approach (...) to natural kinds adopted by pluralists requires them to give up the mind-independence criterion of reality presupposed by monists. Next, I survey two types of pluralist account. I argue that, while the modest pluralist account is not pluralistic enough, the radical pluralist account fails to come up with an alternative criterion of reality that is robust enough to differentiate its position from anti-realism about natural kinds. I conclude by drawing out the implications of my critique for the essentialism/anti-essentialism debate about natural kinds. (shrink)

I argue that the standard anti-realist argument from manifestability to intuitionistic logic is either unsound or invalid. Strong interpretations of the manifestability of understanding are falsified by the existence of blindspots for knowledge. Weaker interpretations are either too weak, or gerrymandered and ad hoc. Either way, they present no threat to classical logic.

Philosophers of science often assume that logically equivalent theories are theoretically equivalent. I argue that two theses, anti-exceptionalism about logic (which says, roughly, that logic is not a priori, that it is revisable, and that it is not special or set apart from other human inquiry) and logical realism (which says, roughly, that differences in logic reflect genuine metaphysical differences in the world), make trouble for both this commitment and the closely related commitment to theories being closed under (...) logical consequence. I provide three arguments. The first two show that anti-exceptionalism about logic provides an epistemic challenge to both the closure and the equivalence claims; the third shows that logical realism provides a metaphysical challenge to both the closure and the equivalence claims. Along the way, I show that there are important methodological upshots for metaphysicians and philosophers of logic. In particular, there are lessons to be drawn about certain conceptions of naturalism as constraining the possibilities for metaphysics and the philosophy of logic. (shrink)

Scientific realism is the view that one can be justified in believing, of some theory about unobservable entities, that the entities it posits are real and accurately described by the theory, in the same sense as one can be justified in believing that the theory’s empirical predictions are accurate, and that so to believe is what it means for a scientist to “accept” that theory, because the goal of science is to describe reality, even its unobservable features. The first (...) part is an epistemic claim, whereas the second concerns the rational reconstruction of scientific practice. Together they suggest that evidence justifying scientific acceptance of a theory justifies belief that the unobservable entities it posits are real and as the theory purports them to be. Anti-realism denies ; it holds that claims about unobservables are either unjustified or justified in a different sense from predictions of observations. It also denies ; it maintains that in her scientific work, as rationally reconstructed, a scientist who accepts a claim about unobservables believes that it yields accurate predictions of observables, not that it describes unobservables. (shrink)

This is the Portuguese translation of Kathleen Okruhlik's paper "Bas van Fraassen’s Philosophy of Science and His Epistemic Voluntarism" (2014) Bas van Fraassen’s anti-realist account of science has played a major role in shaping recent philosophy of science. His constructive empiricism, in particular, has been widely discussed and criticized in the journal literature and is a standard topic in philosophy of science course curricula. Other aspects of his empiricism are less well known, including his empiricist account of scientific (...) laws, his relatively recent re-evaluation of what it is to be an empiricist, and his empiricist structuralism. This essay attempts to provide an overview of these diverse aspects of van Fraassen’s empiricism and to show how they relate to one another. It also focuses on the nature of van Fraassens’s epistemic voluntarism and its relationship to his empiricist philosophy of science. (shrink)

It is widely believed that many of the competing accounts of scientific explanation have ramifications which are relevant to the scientific realism debate. I claim that the two issues are orthogonal. For definiteness, I consider Cartwright's argument that causal explanations secure belief in theoretical entities. In Section I, van Fraassen's anti-realism is reviewed; I argue that this anti-realism is, prima facie, consistent with a causal account of explanation. Section II reviews Cartwright's arguments. In Section III, (...) it is argued that causal explanations do not license the sort of inferences to theoretical entities that would embarass the anti-realist. Section IV examines the epistemic commitments involved in accepting a causal explanation. Section V presents my conclusions: contra Cartwright, the anti-realist may incorporate a causal account of explanation into his vision of science in an entirely natural way. (shrink)

What is the relation between method and truth? Are we justified in accepting a theory that satisfies the rules of scientific method as true? Such questions divide realism from anti-realism in the philosophy of science. Scientific realists take the methods of science to promote the realist aim of correspondence truth. Anti-realists either claim that the methods of science promote lesser epistemic goals than realist truth, or else they reject the realist conception of truth altogether. In (...) this paper, I propose a realist theory of the relation between method and truth. The theory consists of three basic elements: (a) a naturalistic treatment of epistemic normativity, (b) an instrumentalist conception of the nature of methodological rules, and (c) an abductive argument for the truth-conduciveness of the rules of scientific method. (shrink)