Realism and Anti-Realism, Misc

Arguments for a theory about the nature of the ontological categories, the relations that determine them and their epistemic role in the construction of different kinds of limited, but true knowledge of reality in itself.

The construction of space-time in a physical system without time and dynamics is considered. It is shown that the anthropic principle and causality principle inevitably arise in models without time and dynamics. It is shown that for any physical model based on a system without time and dynamics, the anthropic principle is a scientific principle and, in principle, can be falsified. It is shown that, in principle, there is the possibility of experimental verification of what is true - realism or (...) idealism. (shrink)

Philosophy part of theory of emergent space-time-matter is discussed. It was shown that anthropic principle is direct consequence of emergent time. It was shown that conscience is epiphenomenon, but it is more fundamental than matter.

The question of what is real seems to be the easiest to answer, because in our daily lives we are and must be naive realists. But as soon as reflection begins, we get into trouble. On the one hand we have to admit that there are several concepts of reality if we want to say that things other than physical things are also real, on the other hand we see that even that form of knowledge, which seems to be most (...) responsible for reality, natural science, cannot give the desired uniqueness in terms of what it itself wants or needs to understand to be real. Alternatively, when we see that nothing can be and nothing is real, if it is not in a world, and if we understand the world as the order of things (worldI ), then this leads us to the speculative answer that the function of worldI is to enable the reality of our empirical worldII. (shrink)

I discuss Benacerraf's epistemological challenge for realism about areas like mathematics, metalogic, and modality, and describe the pluralist response to it. I explain why normative pluralism is peculiarly unsatisfactory, and use this explanation to formulate a radicalization of Moore's Open Question Argument. According to the argument, the facts -- even the normative facts -- fail to settle the practical questions at the center of our normative lives. One lesson is that the concepts of realism and objectivity, which are widely identified, (...) are actually in tension. (shrink)

Plausibly, mathematical claims are true, but the fundamental furniture of the world does not include mathematical objects. This can be made sense of by providing mathematical claims with paraphrases, which make clear how the truth of such claims does not require the fundamental existence of mathematical objects. This paper explores the consequences of this type of position for explanatory structure. There is an apparently straightforward relationship between this sort of structure, and the logical sort: i.e. logically complex claims are explained (...) by logically simpler ones. For example, disjunctions are explained by their (true) disjuncts, while generalizations are explained by their (true) instances. This would seem as plausible in the case of mathematics as elsewhere. Also, it would seem to be something that the anti-realist approaches at issue would want to preserve. It will be argued, however, that these approaches cannot do this: they lead not merely to violations of the familiar principles relating logical and explanatory structure, but even to reversals of these. That is, there are cases where generalizations explain their instances, or disjunctions their disjuncts. (shrink)

The perennial nature of some of philosophy’s deepest problems is a puzzle. Here, one problem, the realism–anti-realism debate, and one type of explanation for its longevity, are examined. It is argued that realism and anti-realism form a dialetheic pair: While they are in fact each other’s logical opposite, nevertheless, both are true (and both false). First, several reasons why one might think such a thing are presented. These reasons are merely the beginning, however. In the following sections, the dialetheic conclusion (...) is directly argued for by showing how realism and anti-realism satisfy Priest’s “inclosure schema”. In the last section and the conclusion, the conscious mind’s role in creating realism and anti-realism is discussed. This role further supports the conclusion that realism and anti-realism form a dialetheic pair. (shrink)

Any computer can create a model of reality. The hypothesis that quantum computer can generate such a model designated as quantum, which coincides with the modeled reality, is discussed. Its reasons are the theorems about the absence of “hidden variables” in quantum mechanics. The quantum modeling requires the axiom of choice. The following conclusions are deduced from the hypothesis. A quantum model unlike a classical model can coincide with reality. Reality can be interpreted as a quantum computer. The physical processes (...) represent computations of the quantum computer. Quantum information is the real fundament of the world. The conception of quantum computer unifies physics and mathematics and thus the material and the ideal world. Quantum computer is a non-Turing machine in principle. Any quantum computing can be interpreted as an infinite classical computational process of a Turing machine. Quantum computer introduces the notion of “actually infinite computational process”. The discussed hypothesis is consistent with all quantum mechanics. The conclusions address a form of neo-Pythagoreanism: Unifying the mathematical and physical, quantum computer is situated in an intermediate domain of their mutual transformation. (shrink)

The purpose of this article is to support the logical incompatibility of the opposing views as a criterion for characterizing disagreements as genuinely metaphysical. That is, I intend to argue that a specific dispute is a metaphysical disagreement only when the conflicting views are governed by different logics. If correct, this criterion would not only help to separate merely verbal from genuine metaphysical debates, but it also would ground an argument against deflationism, guaranteeing the substantiality and relevance of metaphysics. I (...) intend to clarify the criterion, to present its basic foundations and commitments, to give some logical and metaphysical motivations for its adoption and some examples of its application. (shrink)

Nach den Kriterien einer einflußreichen (vor allem in den englischsprachigen Ländern vertretenen) Deutung der neuzeitlichen Philosophie enthält das Denken Kants die maximale Dosis an Idealismus, die eine Philosophie vertragen kann, ohne inkonsistent zu werden. Die Radikalisierung des idealistischen Ansatzes durch Fichte, Schelling und Hegel wird demnach als eine Abkehr von den geltenden Vernunftstandards betrachtet. Ausgangspunkt dieser Einschätzung ist nicht selten die Verwechslung des nachkantischen Idealismus mit einer überspannten Variante des Idealismus von Berkeley. Diese Lesart des postkantischen Idealismus läßt sich aber (...) weder exegetisch noch konzeptuell rechtfertigen. Der Grundsatz der Einheit von Sein und Denken, dessen erste explizite Aufstellung und Entfaltung Hegel zufolge Fichte zu verdanken ist, impliziert in keiner Weise, daß man dadurch die Existenz der Welt verneinen muß. Was dieser Grundsatz zum Ausdruck bringt, ist eigentlich nur die Notwendigkeit, ein komplexes theoretisches Modell auszuarbeiten, das imstande ist, zu erklären, wie sich die Existenz von wirklichen Dingen behaupten läßt, die vom Subjekt durch seine eigenen Erkenntnisakte erkannt werden, dabei aber zugleich vom Subjekt selbst verschieden sind. Hegels erkenntnistheoretischer Hauptansatz ist, daß die Verbindung von Denken und Sein, von Geist und Welt, strukturell ist. Das Sein kommt zu den Denkinhalten insofern nicht synthetisch hinzu; es sind hingegen die nur vorgestellten Erkenntnisinhalte, welche unter bestimmten Bedingungen der strukturellen Einheit des Geistes mit der Welt zugeschrieben werden. (shrink)

This book aims at six important conceptual tools developed by philosophers. The author develops each particular view in a chapter, hoping to constitute at the end a concise, interesting and easily readable whole. These concepts are: 1. Ethics and realism: elucidation of the distinction between understanding and explanation – the lighthouse type of normativity. 2. Leadership, antirealism and moral psychology – the lightning rod type of normativity. 3. Bright light on self-identity and positive reciprocity – the reciprocity type of normativity. (...) 4. The virtue of generosity and its importance for inclusive education – the divine will type of normativity. 5. Ethical education as normative philosophical perspective. The normativity of self-transformation in education. 6. Aesthetics as expression of human freedom and concern for the whole world in which we live. (shrink)

El debate que se gestó alrededor del concepto de existencia en manos de Willard Van Orman Quine y Rudolf Carnap, dio al siglo XX un cúmulo de aportes significativos a la ontología. La postura realista, con algunas variantes, de Quine y el criterio anti-realista de Carnap, otorga insumos para pensar de mejor forma cómo se intenta dar descripciones acerca del inmobiliario del mundo. Conocer este debate es importante, ya que, se expone los alcances y limitaciones que implican las explicaciones ontológicas (...) acerca de la realidad que deben ser tenidas en cuenta en la actualidad. Este trabajo cumple esa función, la de explicar sintéticamente uno de los debates más importantes para la ontología. (shrink)

On the notion of responsibility employed by John Passmore in his classic Man’s Responsibility for Nature, the relationship of responsibility can only hold between persons (human beings, subjects), or groups and communities of them, and other persons. And in this relationship the persons that are responsible 'to' other persons are responsible 'for' how their actions affect these other persons, not to the direct object of these actions (in this case: nature). If this is correct, we cannot be responsible to nature (...) without conceiving of it as a ‘pseudo-person’, as Passmore calls it. However, non-anthropocentric environmental ethics requires such a moral relationship. The question is, therefore, how this can be allowed in a metaphysically acceptable way. To answer this I first provide an account of what it means to stand in the relation of being ‘responsible to’. Next, I describe two major paradigmatic examples of the metaphysics of nature that perfectly match the thesis that we can, and should, be responsible to nature (the Spinoza-inspired view and the Gaia hypothesis). Unfortunately, they have to be rejected for common sense or naturalist reasons. Finally, I therefore defend a 'fictionalist' view of nature (as person-like) that allows for this relationship. (shrink)

ABSTRACT: I examine how Meillassoux’s conception of correlationism in After Finitude, as I understand it, relates firstly to Kant’s transcendental idealist philosophy, and secondly to the analytic Kantianism of Wilfrid Sellars. I argue that central to the views of both Kant and Sellars is what might be called, with an ambivalent nod to Meillassoux, an objective correlationism. What emerges in the end as the recommended upshot of these analyses is a naturalistic Kantianism that takes the form of an empirical realism (...) in roughly Kant’s sense, but one that is happily wed with Sellars’ scientific realism, once the latter is disentangled from two implausible commitments that made such a reconciliation seem impossible to Sellars himself. (shrink)

This note poses a dilemma for scientific realism which stems from the apparent conflict between science and common sense. On the one hand, we may accept scientific realism and agree that there is a conflict between science and common sense. If we do this, we remove the evidential basis for science and have no reason to accept science in the first place. On the other hand, we may accept scientific realism and endorse common sense. If we do this, we must (...) reject the conflict between science and common sense. The dilemma is to be resolved by distinguishing between basic common sense and widely held beliefs. Basic common sense survives the advance of science and may serve as the evidential basis for science. (shrink)

In the article, I consider seven metaphysical postulates that lie in the foundations of modern physics. These are postulates: about the nature of space-time, about the existence, about the direction of time, about the causality, about the elementary event, about the nature of information and about the immutability of laws. The directions of critical analysis and possible radical revision of these postulates are briefly presented. It is supposed that this revision can indirectly contribute to the development of a theory that (...) will be able to generalize quantum phenomena, gravity and the evolution of the universe. (shrink)

Many ideas of this paper are UNBELIEVABLE similar to my ideas published long time ago! Let me introduce paragraphs.

Social constructionism is often considered a form of anti-realism. But in contemporary feminist philosophy, an increasing number of philosophers defend views that are well-described as both realist and social constructionist. In this paper, I use the work of Sally Haslanger as an example of realist social constructionism. I argue: that Haslanger is best interpreted as defending metaphysical realism about social structures; that this type of metaphysical realism about the social world presents challenges to some popular ways of understanding metaphysical realism.

I happen to believe that though human experiences are to be characterized as pluralistic they are all rooted in the one reality. I would assume the thesis of pluralism but how could I maintain my belief in the realism? There are various discussions in favor of realism but they appear to stay within a particular paradigm so to be called “internal realism”. In this paper I would try to justify my belief in the reality by discussing a special use of (...) indexicals. I will argue for my indexical realism by advancing the thesis that indexicals can be used as an inter-agentic referential term. Three arguments for the thesis will be presented. The first argument derives from a revision of Kaplan-Kvart’s notion of exportation. Their notions of exportation of singular terms can be analyzed as intra-agentic exportation in the context of a single speaker and theirs may be revised so as to be an inter-agentic exportation in the context of two speakers who use the same indexicals. The second is an argument from the notion of causation which is specifically characterized in the context of inter-theoretic reference. I will argue that any two theories may each say “this” in order to refer what is beyond its own theory. Two theories address themselves to ‘this’ same thing though what ‘this’ represents in each theory turn out to be different objects all together. The third argument is an argument which is based on a possibility of natural reference. Reference is used to be taken mostly as a 3-place predicate: Abe refers an object oi with an expression ej. The traditional notion of reference is constructive and anthropocentric. But I would argue that natural reference is a reference that we humans come to recognize among denumerably many objects in natural states: at a moment mi in a natural state there is a referential relation among objects o1, o2, o3, . . , oj, o j+1, . . which interact to each other as agents of information processors. Natural reference is an original reference which is naturally given and to which humans are passive as we derivatively refer it by using ‘this’. (shrink)

The scientific successes of the last 400 years strongly suggest a picture on which our scientific theories exhibit a layered structure of dependence and determination. Economics is dependent on and determined by psychology; psychology in its turn is, plausibly, dependent on and determined by biology; and so it goes. It is tempting to explain this layered structure of dependence and determination among our theories by appeal to a corresponding layered structure of dependence and determination among the entities putatively treated by (...) those theories. In this paper, I argue that we can resist this temptation: we can explain the sense in which, e.g., the biological truths are dependent on and determined by chemical truths without appealing to properly biological or chemical entities. This opens the door to a view on which, though there are more truths than just the purely physical truths, there are no entities, states, or properties other than the purely physical entities, states, and properties. I argue that some familiar strategies to explicate the idea of a layered structure of theories by appeal to reduction, ground, and truthmaking encounter difficulties. I then show how these difficulties point the way to a more satisfactory treatment which appeals to something very close to the notion of ground. Finally, I show how this treatment provides a theoretical setting in which we might fruitfully frame debates about which entities there really are. (shrink)

We discuss the philosophical implications of formal results showing the con- sequences of adding the epsilon operator to intuitionistic predicate logic. These results are related to Diaconescu’s theorem, a result originating in topos theory that, translated to constructive set theory, says that the axiom of choice (an “existence principle”) implies the law of excluded middle (which purports to be a logical principle). As a logical choice principle, epsilon allows us to translate that result to a logical setting, where one can (...) get an analogue of Diaconescu’s result, but also can disentangle the roles of certain other assumptions that are hidden in mathematical presentations. It is our view that these results have not received the attention they deserve: logicians are unlikely to read a discussion because the results considered are “already well known,” while the results are simultaneously unknown to philosophers who do not specialize in what most philosophers will regard as esoteric logics. This is a problem, since these results have important implications for and promise signif i cant illumination of contem- porary debates in metaphysics. The point of this paper is to make the nature of the results clear in a way accessible to philosophers who do not specialize in logic, and in a way that makes clear their implications for contemporary philo- sophical discussions. To make the latter point, we will focus on Dummettian discussions of realism and anti-realism. Keywords: epsilon, axiom of choice, metaphysics, intuitionistic logic, Dummett, realism, antirealism. (shrink)

Scientific realists argue that a good track record of multi-agent, and multiple method, validation of empirical claims is itself evidence that those claims, at least partially and approximately, reflect ways nature actually is independent of the ways we conceptualize it. Constructivists contend that successes in validating empirical claims only suffice to establish that our ways of modelling the world, our “constructions,” are useful and adequate for beings like us. This essay presents a thought experiment in which beings like us intersubjectively (...) validate claims about properties of particular things in nature under conditions in which those beings have profoundly different personal phenomenological experiences of those properties. I submit that the thought experiment scenario parallels our actual situation, and argue that this shows that successes in intersubjectively validating empirical claims are indeed enough to claim victory for the realist. More specifically, I champion a variation of realism that marries Ronald Giere’s brand of ‘perspectival realism’ with Philip Kitcher’s ‘real realism,’ and posits that causal relations between ourselves and properties instantiated in nature ground our references to the relevant properties even though our conceptions of them are perspective relative. (shrink)

I argue that recent attempts to deflect Access Problems for realism about a priori domains such as mathematics, logic, morality, and modality using arguments from evolution result in two kinds of explanatory overkill: the Access Problem is eliminated for contentious domains, and realist belief becomes viciously immune to arguments from dispensability, and to non-rebutting counter-arguments more generally.

Retrieving Realism renders the joint philosophical goals of Hubert Dreyfus and Charles Taylor into what is probably their final and most concise form. It has two main objectives: first, it aims to deconstruct the mediationalism that undergirds Western philosophy, and second, it endorses contact theory, or embodied/embedded coping, as an alternative. In this essay, I present the book’s most salient themes and reveal areas that are ripe for further philosophical consideration. I also direct the reader to the work’s genuine ontological (...) challenge: how to come to grips with contact theory beyond the borders of epistemology. (shrink)

This is an extended intellectual obituary for Hilary Putnam.

In the Transcendental Dialectic (KrV, A 599-560/B 627-628), Kant presents the argument of the hundred talers as a concrete example of his general claim against conceiving existence as a real predicate. According to Kant, the content of concepts can be completely determined as merely possible content; in the existential judgment, the subject then relates the completely determined content of his internal thoughts with perception: it is only through perception that the subject knows the content of his concepts as real things (...) of the world. Thus, although in his epistemology conceptual activity plays a crucial role in perceptual activity, Kant still offers an empiricist account of empirical knowledge. Hegel criticizes Kant´s theory of perception by distinguishing representation (Vorstellen) from comprehension (Begreifen) and by developing on that basis a more complex theory of the relation between concept, existence, and empirical knowledge. From the standpoint of representation, concept and existence, being-determined and being-real exclude each other; in comprehension, on the contrary, representation and perception are no longer unilateral forms of knowing: for the mind that comprehends what it perceives, the existence of what it perceives is –when abstractly considered as such– only a collateral product of the way it knows the real world. According to Hegel, comprehension develops the internal necessity of the contents of knowledge and, by doing so, grasps the individual objects that constitute our world. (shrink)

No Tratado da natureza humana, David Hume dedica uma longa seção à problemática sobre a possibilidade da existência do mundo externo intitulada “Do ceticismo quanto aos sentidos”. A seção traz idas e vindas do autor no que diz respeito à resposta para o problema. Inicialmente, Hume dá como certa a existência externa dos corpos, i.e., independente das percepções, e avisa que sua investigação se limitará, apenas, às causas que levam a crer nisso. Sua pretensão inicial não é cumprida e logo (...) dá espaço a uma rede de complexos argumentos céticos, os quais colocam em dúvida as realidades independentes das percepções. No último parágrafo, porém, Hume parece retroceder em sua posição e parece tomar como certa a existência independente dos corpos, mais uma vez, tal como fez no começo da seção. O objetivo desse trabalho foi, pois, evidenciar que há dois pontos bem diferentes que caracterizam sua argumentação sobre esse assunto: I) A existência do mundo externo; II) a possibilidade de conhecê-lo. Ao primeiro, a resposta de Hume será positiva, ao segundo ponto, negativa. O ceticismo, portanto, sempre decorreria de qualquer tentativa em conhecer tais realidades independentes, pois, através da argumentação filosófica, da razão, sempre se esbarraria na impossibilidade de sua existência. Ao mesmo tempo, sua realidade ontológica parece se impor pela própria natureza e, com isso, desativa os argumentos céticos, os quais sempre demonstram a impossibilidade de conhecê-lo, i.e., acessá-lo pela razão. Assim, o que se tem sobre o mundo externo são, apenas, impressões geradas através da experiência para com o mesmo. Em vista dos fins supracitados, foram utilizados, além do Tratado, a Investigação sobre o entendimento humano e outros textos do filósofo escocês. (shrink)

Rockmore’s paper offers a nice discussion on how classical German idealism provides a plausible account of the Parmenidean insight that thought and being are identical and suggests that idealist epistemic constructivism is arguably the most promising approach to cognition. In this short commentary, I will explore the implications of adopting other interpretations of Parmenidean identity thesis, which arguably lead to different conclusions than the ones drawn by Rockmore. En route to disavow the distinction between ontology and epistemology, I argue that (...) one may adopt an approach on cognition which would be immunized to worries that prompt Rockmore’s elaboration and also embrace (at least) some of its benefits. (shrink)

This paper investigates the nature of reality by looking at the philosophical debate between realism and idealism and at scientific investigations in quantum physics and at recent studies of animal senses, neurology and cognitive psychology. The concept of perceptual relativity is examined and this involves looking at sense perception in other animals and various examples of perceptual relativity in science. It will be concluded that the universe is observer dependent and that there is no reality independent of the observer, which (...) is knowable to the observer. The paper concludes by an investigation of what an observer dependent universe would be like and that recognition of an observer dependent world would lead to a more open minded and tolerant world. (shrink)

This article examines whether it is possible to uphold one form of deflationism towards metaphysics, ontological pluralism, whilst maintaining metaphysical realism. The focus therefore is on one prominent deflationist who fits the definition of an ontological pluralist, Eli Hirsch, and his self-ascription as a realist. The article argues that ontological pluralism is not amenable to the ascription of realism under some basic intuitions as to what a “realist” position is committed to. These basic intuitions include a commitment to more than (...) a stuff-ontology, and a view that realism carries with it more than a rejection of idealism. This issue is more than merely terminological. The ascription of realism is an important classification in order to understand what sorts of entities can be the truthmakers within a given theory. “Realism” is thus an important term to understand the nature of the entities that a given theory accepts into its ontology. (shrink)

ABSTRACT: I contend that Sellars defends a uniquely Kantian naturalist outlook both in general and more particularly in relation to the nature and status of what he calls ‘epistemic principles’; and I attempt to show that this remains a plausible and distinctive position even when detached from Sellars’s quasi-Kantian transcendental idealist contention that the perceptible objects of the manifest image strictly speaking do not exist, i.e., as conceived within that common sense framework. I first explain the complex Kant-inspired sense in (...) which Sellars did not take the latter thesis concerning the objects of the manifest image to apply, at least in certain fundamental respects, to persons. In this primary Kantian sense, I suggest, persons as thinkers and agents exist univocally across both the manifest and scientific images, and this in principle would enable an integration of persons within a multi-leveled naturalistic ontology, one that is independent of Sellars’s quasi-Kantian transcendental idealist thesis. Finally, I examine in some detail how this defensible blend of Kantian and naturalist themes turns out to be what is fundamental in Sellars’s complex and controversial views on the nature and status of epistemic principles. (shrink)

Both realist and anti-realist accounts of natural kinds possess prima facie virtues: realists can straightforwardly make sense of the apparent objectivity of the natural kinds, and anti-realists, their knowability. This paper formulates a properly anti-realist account designed to capture both merits. In particular, it recommends understanding natural kinds as ‘categorical bottlenecks,’ those categories that not only best serve us, with our idiosyncratic aims and cognitive capacities, but also those of a wide range of alternative agents. By endorsing an ultimately subjective (...) categorical principle, this view sidesteps epistemological difficulties facing realist views. Yet, it nevertheless identifies natural kinds that are fairly, though not completely, stance-independent or objective. (shrink)

Hilbert’s choice operators τ and ε, when added to intuitionistic logic, strengthen it. In the presence of certain extensionality axioms they produce classical logic, while in the presence of weaker decidability conditions for terms they produce various superintuitionistic intermediate logics. In this thesis, I argue that there are important philosophical lessons to be learned from these results. To make the case, I begin with a historical discussion situating the development of Hilbert’s operators in relation to his evolving program in the (...) foundations of mathematics and in relation to philosophical motivations leading to the development of intuitionistic logic. This sets the stage for a brief description of the relevant part of Dummett’s program to recast debates in metaphysics, and in particular disputes about realism and anti-realism, as closely intertwined with issues in philosophical logic, with the acceptance of classical logic for a domain reflecting a commitment to realism for that domain. Then I review extant results about what is provable and what is not when one adds epsilon to intuitionistic logic, largely due to Bell and DeVidi, and I give several new proofs of intermediate logics from intuitionistic logic+ε without identity. With all this in hand, I turn to a discussion of the philosophical significance of choice operators. Among the conclusions I defend are that these results provide a finer-grained basis for Dummett’s contention that commitment to classically valid but intuitionistically invalid principles reflect metaphysical commitments by showing those principles to be derivable from certain existence assumptions; that Dummett’s framework is improved by these results as they show that questions of realism and anti-realism are not an “all or nothing” matter, but that there are plausibly metaphysical stances between the poles of anti-realism and realism, because different sorts of ontological assumptions yield intermediate rather than classical logic; and that these intermediate positions between classical and intuitionistic logic link up in interesting ways with our intuitions about issues of objectivity and reality, and do so usefully by linking to questions around intriguing everyday concepts such as “is smart,” which I suggest involve a number of distinct dimensions which might themselves be objective, but because of their multivalent structure are themselves intermediate between being objective and not. Finally, I discuss the implications of these results for ongoing debates about the status of arbitrary and ideal objects in the foundations of logic, showing among other things that much of the discussion is flawed because it does not recognize the degree to which the claims being made depend on the presumption that one is working with a very strong logic. (shrink)

Professors of philosophy, the authors have done a succinct and critical analysis of some theories of truth: deflationism, indeterminacy, insolubility, realism, and antirealism.

It is often claimed that anti-realism is a form of transcendental idealism or that Kant is an anti-realist. It is also often claimed that anti-realists are committed to some form of knowability principle and that such principles have problematic consequences. It is therefore natural to ask whether Kant is so committed, and if he is, whether this leads him into difficulties. I argue that a standard reading of Kant does indeed have him committed to the claim that all empirical truths (...) are knowable and that this claim entails that there is no empirical truth that is never known. I extend the result to a priori truths and draw some general philosophical lessons from this extension. However, I then propose a re-examination of Kant’s notion of experience according to which he carefully eschews any commitment to empirical knowability. Finally I respond to a remaining problem that stems from a weaker, justified believability principle. (shrink)

According to Charles Travis our language is occasion-sensitive. The truth- conditions of all our sentences, and their correctness-conditions more generally, vary depending on the occasions on which they are used. This is part of a broader view of language as unshadowed. This paper develops objections Travis has made from this viewpoint against Michael Dummett’s anti-realism. It aims to show that the arguments are suggestive but inconclusive. For all it shows unshadowed anti-realism is a possibility.

State of the art paper on the topic realism/anti-realism. The first part of the paper elucidates the notions of existence and independence of the metaphysical characterization of the realism/anti-realism dispute. The second part of the paper presents a critical taxonomy of the most important positions and doctrines in the contemporary literature on the domains of science and mathematics: scientific realism, scientific anti-realism, constructive empiricism, structural realism, mathematical Platonism, mathematical indispensability, mathematical empiricism, intuitionism, mathematical fictionalism and second philosophy.

Sense perception and Reality examines the remarkable similarities between philosophical idealism and the Copenhagen Interpretation of quantum physics. The book looks at perceptual relativity involving animal senses, neurology and cognitive psychology. It concludes the universe is observer dependent and varies with the sensory apparatus used to observe it. The Copenhagen Interpretation is examined and perceptual relativity would appear to apply in the quantum world. The Copenhagen Interpretation suggests the universe is observer dependent, the same conclusion as is found in philosophical (...) idealism in the macro world. The book concludes by examining the consequences of an observer dependent universe and by showing such a universe is quite consistent with a modern objective science. (shrink)

Three influential forms of realism are distinguished and interrelated: realism about the external world, construed as a metaphysical doctrine; scientific realism about non-observable entities postulated in science; and semantic realism as defined by Dummett. Metaphysical realism about everyday physical objects is contrasted with idealism and phenomenalism, and several potent arguments against these latter views are reviewed. -/- Three forms of scientific realism are then distinguished: (i) scientific theories and their existence postulates should be taken literally; (ii) the existence of unobservable (...) entities posited by our most successful scientific theories is justified scientifically; and (iii) our best current scientific theories are at least approximately true. It is argued that only some form of scientific realism can make proper sense of certain episodes in the history of science. -/- Finally, Dummett’s influential formulation of semantic issues about realism considered. Dummett argued that in some cases, the fundamental issue is not about the existence of entities, but rather about whether statements of some specified class (such as mathematics) have an objective truth value, independently of our means of knowing it. Dummett famously argued against such semantic realism and in favor of anti-realism. The relation of semantic realism to the metaphysical construal of realism and Dummett’s main argument against semantic realism is examined. (shrink)

In this paper, I argue that there are indispensable and irreducible metaphors in religious language and that this does not threaten a realist interpretation of religion. I first sketch a realist theory of religious language and argue that we cannot avoid addressing the problems metaphor poses to semantics. I then give a brief account of what it means for a metaphorical sentence to be true and how metaphors can refer to something even if what they mean is not expressible in (...) literal terms. Finally, I discuss how this realist theory of metaphor influences our understanding of negative theology and gives a new perspective on religious pluralism. (shrink)

This paper investigates the nature of scientific realism. I begin by considering the anomalous fact that Bas van Fraassen’s account of scientific realism is strikingly similar to Arthur Fine’s account of scientific non-realism. To resolve this puzzle, I demonstrate how the two theorists understand the nature of truth and its connection to ontology, and how that informs their conception of the realism debate. I then argue that the debate is much better captured by the theory of truthmaking, and not by (...) any particular theory of truth. To be a scientific realist is to adopt a realism-relevant account of what makes true the scientific theories one accepts. The truthmaking approach restores realism’s metaphysical core—distancing itself from linguistic conceptions of the debate—and thereby offers a better characterization of what is at stake in the question of scientific realism. (shrink)

This thesis is about the metaphysics of logic. I argue against a view I refer to as ‘logical realism’. This is the view that the logical constants represent a particular kind of metaphysical structure, which I dub ‘logico-metaphysical structure’. I argue instead for a more metaphysically lightweight view of logic which I dub ‘logical expressivism’. -/- In the first part of this thesis (Chapters I and II) I argue against a number of arguments that Theodore Sider has given for logical (...) realism. In Chapter I, I present an argument of his to the effect that logico-metaphysical structure provides the only good explanation of the semantic determinacy of the logical constants. I argue that other explanations are possible. In Chapter II, I present another argument of his to the effect that logico-metaphysical structure is something that comes along with ontological realism: the view that there is a non-language-relative fact of the matter about what exists. I argue that the connection between logical and ontological realism is not as close as Sider makes it out to be. -/- In the second part of this thesis (Chapters III – V) I set out a positive view of the logical constants that can explain both why their meanings are semantically determinate, and why they form part of our vocabulary. On that view, the primary bearers of logical structure are propositional attitudes, and the logical constants are in our language as vehicles for the expression of logically complex propositional attitudes. In Chapter III, I set out an expressivist theory of propositional logic. In Chapter IV, I use this theory to explain how the logical connectives end up having determinate meanings. In Chapter V, I extend the expressivist theory to predicate logic. (shrink)

Tim Button explores the relationship between minds, words, and world. He argues that the two main strands of scepticism are deeply related and can be overcome, but that there is a limit to how much we can show. We must position ourselves somewhere between internal realism and external realism, and we cannot hope to say exactly where.

This is a sequel to our dialogue "Che cosa c'è e che cos'è (2003), focusing on the interplay between what there is and what there could be—between actuality and possibility—from the perspective of Hylas (here: the realist philosopher) and from the perspective of Philonous (here: the conventionalist anti-realist).

If you retain your belief upon learning that a large number and percentage of your recognized epistemic superiors disagree with you, then what happens to the epistemic status of your belief? I investigate that theoretical question as well has the applied case of philosophical disagreement—especially disagreement regarding purely philosophical error theories, theories that do not have much empirical support and that reject large swaths of our most commonsensical beliefs. I argue that even if all those error theories are false, either (...) (a) the average philosopher’s true commonsensical beliefs are epistemically impoverished, or (b) a good portion of philosophy is bunk and philosophers should give up most of their error theories despite the fact that their supporting arguments are generally as good as or even better than other philosophical arguments. (shrink)