Could Aquinas Reject Semantic Realism? Reply to De Anna

While accepting that metaphysical realism is incompatible with semantic anti-realism, De Anna has argued in The Philosophical Quarterly , 50 (2000), pp. 82–7, that Aquinas'metaphysical realism is compatible with the negation of semantic realism. In reply, I show that De Anna's case for this claim has two serious shortcomings: first, it fails to recognize the cognitive issues arising from the distinction between adequate and inadequate effects; secondly, it incorrectly assumes that the analogical use of language can extend one's recognitional capacities.     

The Significance of Semantic Realism

This paper is concerned with the relationship between the metaphysical doctrine of realism about the external world and semantic realism, as characterised by Michael Dummett. I argue that Dummett's conception of the relationship is flawed, and that Crispin Wright's account of the relationship, although designed to avoid the problems which beset Dummett's, nevertheless fails for similar reasons. I then aim to show that despite the fact that Dummett and Wright both fail to give a plausible account of the relationship between semantic realism and the metaphysical doctrine of realism, the semantic issue and the metaphysical issue are importantly related. I outline the precise sense in which the evaluation of semantic realism is relevant to the evaluation of realism about the external world, a sense overlooked by opponents of Dummett, such as Simon Blackburn and Michael Devitt. I finish with some brief remarks on metaphysics, semantics, and the nature of philosophy, and suggest that Dummett's arguments against semantic realism can retain their relevance to metaphysical debate even if we reject Dummett's idea that the theory of meaning is thefoundation of all philosophy.     

Realism and social structure

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: (i) that Haslanger is best interpreted as defending metaphysical realism about social structures; (ii) that this type of metaphysical realism about the social world presents challenges to some popular ways of understanding metaphysical realism.     

Quasi-Realism and Inductive Scepticism in Hume’s Theory of Causation

Interpreters of Hume on causation consider that an advantage of the ‘quasi-realist’ reading is that it does not commit him to scepticism or to an error theory about causal reasoning. It is unique to quasi-realism that it maintains this positive epistemic result together with a rejection of metaphysical realism about causation: the quasi-realist supplies an appropriate semantic theory in order to justify the practice of talking ‘as if’ there were causal powers in the world. In this paper, I problematise the quasi-realist reading of Hume on causation by showing how quasi-realism does not speak to inductive scepticism. I also offer evidence that Hume takes inductive scepticism to result from his theory of causation, and that his scepticism is tied to his rejection of metaphysical causal realism.     

Semantic Challenges to Scientific Realism

This paper is concerned with connections between scientific and metaphysical realism. It is not difficult to show that scientific realism, as expounded by Psillos (1999) clearly qualifies as a kind of metaphysical realism in the sense of Putnam (1980). The statement of scientific realism therefore must not only deal with underdetermination and the dynamics of scientific theories but also answer the semantic challenges to metaphysical realism. As will be argued, the common core of these challenges is the proposition that a (metaphysical) realist semantics leads to semantic agnosticism in the sense that we are unable to grasp the proper meanings and referents of our linguistic expressions. Having established this, I will focus more specifically on the question of whether scientific realism—in its state-of-the-art account—has the resources to make reference to scientific concepts intelligible such that the semantic challenges can be answered.     

Putnam's natural realism and the question of a perceptual interface

According to Hilary Putnam, natural realism is a form of direct realism in the philosophy of perception that promises to help see us past an irresolvable metaphysical dispute between realism and anti-realism. Illumination depends upon the claim that in perception that there is no interface between the cognitive powers of the mind and the causal powers of the world. In the present paper I aim to show that there is a hidden complexity in Putnam's notion of a perceptual interface. On a trivializing reading, Putnam intends only to reject a modern materialist version of the traditional ‘veil of ideas’. On a richer reading, he intends also to reject the view that the intentional content of experience is autonomous with respect to the external world. I conclude by suggesting that natural realism is not mere common sense and that its fate is tied to its ability to respond to the skeptical threats that help to motivate the traditional options of realism and antirealism.     

Jesuit Sensuality and Feminist Bodies

The stated goal of Donna Haraway's "Cyborg feminism" is to liberate sensuality from violence. In examining her book alongside that of Jesuit Toletus it becomes clear that both argue that sensuality is a place of metaphysical violence. The first two sections of the essay demonstrate this, and, in addition that Toletus' commentary on Aquinas is hardly accurate. This fact will help justify the claim that the Jesuit tradition includes a rather particular theory of sensuality, the origin of which is perhaps Giles of Rome. A third section shows how the Jesuit Gaston Fessard rediscovered Aquinas' own theory of sensuality through a thoroughgoing critique of Hegelian and Marxist dialectic. The essay concludes that Haraway would do well to adopt Aquinas' non-violent theory of sensuality as her own.     

Shallow versus deep response-dependence

This paper explores a distinction between two types of response-dependence (RD) account (shallow vs. deep). This distinction is inherent in much of the existing literature, however it is neither widely nor well understood, and has never been drawn explicitly. The distinction is often taken to be a metaphysical, or ‘realism-relevant’ one—i.e. deep RD accounts entail qualified realism (or perhaps anti-realism), while shallow RD accounts are metaphysically neutral. I argue that the distinction is not reliably realism-relevant. I formulate a weaker version of the distinction that may help prevent some common and understandable confusion about RD biconditionals and their relationship to realism. The weaker distinction rests on the different roles assigned to RD biconditionals by the two types of account.     

Manifestability and Semantic Realism

Abstract: This paper provides a critical discussion of Alexander Miller's recent attack on antirealist arguments against semantic realism that are based on manifestability requirements. Miller attempts to defend semantic realism against Wright-Hale arguments from manifestability. He does so in reliance on a McDowell type assertion-truth platitude. This paper argues in both general terms and in relation to the details of Miller's argument, that attempts to defend semantic realism while accepting a Dummettian-Wittgensteinian framework on theories of meaning, are misconceived and likely to fail, as I believe is true in Miller's case. Semantic realism is best defended within a context of metaphysical realism, and naturalistic-causal theories of meaning and explanation.     

Why We Shouldn't Swallow Worm Slices: A Case Study in Semantic Accommodation

A radical metaphysical theory typically comes packaged with a semantic theory that reconciles those radical claims with common sense. The metaphysical theory says what things exist and what their natures are, while the semantic theory specifies, in terms of these things, how we are to interpret everyday language. Thus may we “think with the learned, and speak with the vulgar.” This semantic accommodation of common sense, however, can end up undermining the very theory it is designed to protect. This paper is a case study, showing in detail how one popular version of temporal parts theory is self‐undermining. This raises the specter that the problem generalizes to other metaphysical theories. The traditional flavor of temporal parts theory, Worm Theory, claims that everyday objects are four‐dimensional space‐time worms. An alternative flavor, Slice Theory, claims that objects are not space‐time worms but are instead momentary slices of these worms. The differences, we find, are not nearly as great as advertised. In fact, the differences in the two metaphysical theories are entirely masked by compensating differences in the accompanying semantic theories. As a result, the two theories generate exactly the same truth conditions. Common sense says that I was born years ago. Slice Theory adopts a semantic theory that accommodates such claims, but in doing so, it also endorses the claim that I, like other everyday objects, persist and thus do not exist for a mere moment. That is, the metaphysical claims constitutive of Slice Theory are denied by the very semantic theory Slice Theory adopts to accommodate common sense. Slice Theory thus undermines itself.     

Three Paradigms of Scientific Realism: A Truthmaking Account

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.     

Truthmaking, metaethics, and creeping minimalism

Creeping minimalism threatens to cloud the distinction between realist and anti-realist metaethical views. When anti-realist views equip themselves with minimalist theories of truth and other semantic notions, they are able to take on more and more of the doctrines of realism (such as the existence of moral truths, facts, and beliefs). But then they start to look suspiciously like realist views. I suggest that creeping minimalism is a problem only if moral realism is understood primarily as a semantic doctrine. I argue that moral realism is better understood instead as a metaphysical doctrine. As a result, we can usefully regiment the metaethical debate into one about moral truthmakers: In virtue of what are moral judgments true? I show how the notion of truthmaking has been simmering just below the surface of the metaethical debate, and how it reveals one metaethical view (quasi-realism) to be a stronger contender than the others.     

Constitutivism and Transcendental Practical Philosophy: How to Pull the Rabbit Out of the Hat

Constitutivism aims to justify substantial normative standards as constitutive of practical reason. In this way, it can defend the constructivist commitment to avoiding realism and anti-realism in normative disciplines. This metaphysical debate is the perspective from which the nature of the constitutivist justification is usually discussed. In this paper, I focus on a related, but distinct, debate. My concern will not be whether the substantial normative claims asserted by the constructivist have some elements, which are not constructed, but real, given independently from us; instead, my concern will be more narrowly epistemic – whether those claims can be derived from premises, which are normatively less substantial than the normative conclusions themselves. I focus on Korsgaard’s transcendental articulation of the constitutivist argument. I conclude that more work would need to be done, in order for this argument to function as intended.     

Is Putnam's Causal Theory of Meaning Compatible with Internal Realism?

Putnam originally developed his causal theory of meaning in order to support scientific realism and reject the notion of incommensurability. Later he gave up this position and adopted instead what he called ‘internal realism’, but apparently without changing his mind on topics related to his former philosophy of language. The question must arise whether internal realism, which actually is a species of antirealism, is compatible with the causal theory of meaning. In giving an answer I begin with an analysis of the content and metaphysical background of scientific realism. I show that it presupposes metaphysical realism and that Putnam's philosophical conversion is due to his becoming aware of the latter's incoherence. After giving a brief sketch of internal realism I conclude by arguing that within this new theoretical framework the causal theory of meaning loses its force as a weapon against incommensurability. This revised version was published online in August 2006 with corrections to the Cover Date.     

RELATIVISM AND ANTI-REALISM

I characterise a relativist account of truth as one according to which the truth value of a sentence can vary without its meaning changing. Relativism is to be contrasted with absolutism, which states that the truth values of sentences cannot change, so long as their meanings remain constant. I argue that absolutism follows from the realist account of meaning and truth conditions. According to realism, the meaning of a sentence consists in objective truth conditions and sentences are true if and only if certain objective conditions obtain. Relativism is a consequence of anti-realism. Anti-realists believe that the meanings of sentences consist in recognisable conditions and that sentences are true if and only if certain recognisable conditions obtain. I contrast the sorts of relativism which results from partial, empiricism-based anti-realisms, and global anti-realism, which is linked to a coherence theory of knowledge. I offer a few remarks on how global anti-realists can restrict the scope of their relativism.     

PRIEST AND THE BISHOP

Abstract:  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.     

Why Anti-Realism Breaks up Relationships

Some theologians are inclined to regard realism with hostility or indifference. I do not present an argument for realism, but for why realism matters, and what is at stake.
First of all, I separate the heart of realism from gratuitous doctrines which are too often associated with it. Religious realism is the claim that truth is independent of our beliefs about truth, and that we can in principle hope to have true beliefs about God. Realism is not intrinsically concerned with the existence of 'objects', with natural theology or rational justification.
I then show that even thinkers who are hostile or indifferent to religious realism so defined, usually make an implicit appeal to a similar realism in the sphere of ethics.
To establish that realism matters in religion as well as ethics I draw an analogy with realism/anti-realism about persons, to show that anti-realism makes mutually risk-taking and courageous relationships impossible. I go on to argue that far from it being a realist who is obsessed with rational certainty, this is one of the worst vices of the anti-realist, who cannot bear there to be a gap between her beliefs and reality.
I conclude that the most vital feature of religious realism is not certainty of belief, but the opposite – the acknowledged risk that all our hope could be in vain. In closing the possibility on this risk, the anti-realist demonstrates an unfaithful and uncourageous movement of thought.     

Two models of unawareness: comparing the object-based and the subjective-state-space approaches

This article attempts to motivate a new approach to anti-realism (or nominalism) in the philosophy of mathematics. I will explore the strongest challenges to anti-realism, based on sympathetic interpretations of our intuitions that appear to support realism. I will argue that the current anti-realistic philosophies have not yet met these challenges, and that is why they cannot convince realists. Then, I will introduce a research project for a new, truly naturalistic, and completely scientific approach to philosophy of mathematics. It belongs to anti-realism, but can meet those challenges and can perhaps convince some realists, at least those who are also naturalists.     

SCIENTIFIC REALISM AND METAPHYSICS

The tendency to take scientific realism to be a richer metaphysical view than it ought to be stems from the fact that there are two ways in which we can conceive of reality. The first is to conceive of reality as comprising all facts and the other is to conceive of it as comprising all and only fundamental facts. I argue that scientific realism should be committed to the factualist view of reality and not, in the first instance, to the fundamentalist. An anti‐fundamentalist conception of reality acts as a constraint on scientific realism, but it is a further and (conceptually) separate issue whether or not a scientific realist should come to adopt a fundamentalist view of reality. I argue that scientific realism is independent of physicalism and non‐Humeanism and that the concept of truth is required for a sensible understanding of the metaphysical commitments of scientific realism.     

Epistemological motivations for anti-realism

Anti-realism is often claimed to be preferable to realism on epistemological grounds: while realists have difficulty explaining how we can ever know claims if we are realists about it, anti-realism faces no analogous problem. This paper focuses on anti-realism about normativity to investigate this alleged advantage to anti-realism in detail. I set up a framework in which a version of anti-realism explains a type of modal reliability that appears to be epistemologically promising, and plausibly explains the appearance of an epistemological advantage to realism. But, I argue, this appearance is illusory, and on closer investigation the anti-realist view does not succeed in explaining the presence of familiar epistemological properties for normative belief like knowledge or the absence of defeat. My conclusion on the basis of this framework is that there is a tension in the anti-realist view between the urge to idealize the conditions in which normative beliefs ground normative facts, and a robust kind of reliability that normative belief can have if the anti-realist resists these idealizations.