Mind-World Identity Theory and Semantic Realism: Haldane and Boulter on Aquinas

Stephen Boulter, in The Philosophical Quarterly , 48 (1998), pp. 504–13, attacks John Haldane's proposed account of the relationship between mind and world based on Aquinas' theory of cognition. Boulter argues against Haldane's attempt to square metaphysical realism with semantic anti-realism. I argue that even if metaphysical realism and a full-bodied semantic anti-realism may be incompatible, from the stance of the mind-world identity theory, one may nevertheless maintain metaphysical realism together with the negation of semantic realism. I suggest that this is what Haldane actually claimed, and moreover that Aquinas would have accepted it. Aquinas' analogy-based semantics enlarges the recognitional capacities of speakers, and one's capacity to recognize a fact empirically is different from one's capacity to form thoughts about a fact.     

Eliminating Racism: Dummett's On Immigration and Refugees and the Philosophy of Language

abstract   This paper examines a claim made by Michael Dummett in his recent book On Immigration and Refugees that the feeling of racism can be removed by the creation of a social climate in which the expression of that feeling is disreputable. I suggest that Dummett's claim can be better appreciated if viewed in the light of some guiding principles of his project in the philosophy of language. With these principles in place, I argue that they provide convincing support for Dummett's claim, as well as showing an important connection between On Immigration and Dummett's broader philosophical concerns. I conclude the essay by suggesting some ways in which the insights gleaned from Dummett's philosophy may be applied to the case of asylum seekers and their representation by the media and in political rhetoric.     

'Courage Not Under Fire': Realism,Anti-realism,and the Epistemological Virtues

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 (the one a metaphysical doctrine premised on logicolinguistic considerations, the other a thesis primarily concerned with the scope and limits of empirical inquiry) it shows how they converge on a sceptical outlook concerning the realist claim that truth might always transcend the restrictions of some given (or indeed some future best-possible) 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 (empirical) 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 ? they 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.     

What is the Manifestation Argument?

I consider the well known "manifestation challenge" to semantic realism propounded by Michael Dummett, and further developed by Crispin Wright and Bob Hale. I distinguish between strong and weak versions of the challenge, and show that anti–realists effectively concede that realism can meet the strong version. I then argue that the weak version is unmotivated. Building on work by John McDowell and Peter Strawson, and responding to criticisms from Wright, I argue further that the semantic realist can meet even the weak version. It emerges, inter alia , that there are some serious ambiguities in the standard anti–realist characterisations of semantic realism.     

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.     

Divine simplicity

According to a doctrine widely held by most medieval philosophers and theologians, whether in the Muslim or Christian world, there are no metaphysical distinctions in God whatsoever. As a result of the compendious theorizing that has been done on this issue, the doctrine, usually called the doctrine of divine simplicity, has been bestowed a prominent status in both Islamic and Christian philosophical theology. In Islamic philosophy some well-known philosophers, such as Ibn Sina (980–1037) and Mulla Sadra (1571–1640), developed this doctrine through a metaphysical approach. In this paper, considering the historical order, I shall first concentrate on Ibn Sina’s view. Then I shall turn to the theory of divine simplicity of Thomas Aquinas (1225?–1274), as the most developed and comprehensive version of the medieval theories in Christian world. Finally, I will return to Islamic philosophy and explore the more complicated and mature account of the doctrine as it was introduced by Mulla Sadra according to his own philosophical principles.     

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.     

Transubstantiation after Wittgenstein

Catholic doctrine of the eucharist is commonly thought to incorporate a metaphysical theory of substance. Wittgenstein subverts such theories. Elizabeth Anscombe and Michael Dummett, much respected post-Wittgensteinian philosophers, who are also deeply committed Catholics, argue that substance/accidents metaphysics as well as modern transignification theories prevent the religious events to stand on their own: the moment of consecration, the reservation of the consecrated elements. Bad theories which occlude the religious realities are thus removed—which does not show that all philosophizing about religious doctrine must be "rubbish".     

The Place of Semantic Theory

Abstract: Some twenty years since its publication Putnam's model‐theoretic argument is still much discussed. The present paper aims to defend a reconstruction of the argument but begins by attempting to clarify the form of the argument. Usually, and with good textual grounds, the argument is treated as a reductio argument against metaphysical realism. I argue instead that it should be treated as developing a paradox. I go on to claim that the most promising response to this paradox is to be able to provide a theory of (Fregean) sense, in the style recommended by Dummett. So, according to this reasoning, the argument is not an argument against metaphysical realism but an argument against positions which reject the notion of sense.     

Metaphysics as modeling: the handmaiden’s tale

Critics of contemporary metaphysics argue that it attempts to do the hard work of science from the ease of the armchair. Physics, not metaphysics, tells us about the fundamental facts of the world, and empirical psychology is best placed to reveal the content of our concepts about the world. Exploring and understanding the world through metaphysical reflection is obsolete. In this paper, I will show why this critique of metaphysics fails, arguing that metaphysical methods used to make claims about the world are similar to scientific methods used to make claims about the world, but that the subjects of metaphysics are not the subjects of science. Those who argue that metaphysics uses a problematic methodology to make claims about subjects better covered by natural science get the situation exactly the wrong way around: metaphysics has a distinctive subject matter, not a distinctive methodology. The questions metaphysicians address are different from those of scientists, but the methods employed to develop and select theories are similar. In the first section of the paper, I will describe the sort of subject matter that metaphysics tends to engage with. In the second section of the paper, I will show how metaphysical theories are classes of models and discuss the roles of experience, common sense and thought experiments in the construction and evaluation of such models. Finally, in the last section I will discuss the way these methodological points help us to understand the metaphysical project. Getting the right account of the metaphysical method allows us to better understand the relationship between science and metaphysics, to explain why doing metaphysics successfully involves having a range of different theories (instead of consensus on a single theory), to understand the role of thought experiments involving fictional worlds, and to situate metaphysical realism in a scientifically realist context.     

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.     

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.     

A TRUTHMAKING ACCOUNT OF REALISM AND ANTI‐REALISM

Realism and anti‐realism about a domain of thought are metaphysical theses that involve the natures of the truthmakers in that domain and the truthmaking relation that is operant in the domain. Truthmaker theory is not exclusive territory for realists: anti‐realist views are also best understood in terms of how they understand truthmakers and truthmaking. In particular, I explore the possibility of projectivist truthmaking, and show how it makes sense of quasi‐realism. In addition to critically examining some extant accounts of the relationship between realism and truthmaking, I offer an account that best captures the nature of the various realism debates.     

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.     

Dummett on Bringing About the Past

In ‘Bringing about the Past’ Michael Dummett attempted to defend the coherence of the idea of bringing about the past. I agree that bringing about the past is conceptually no more problematic than bringing about the future, but argue, against Dummett, that there is no need to restrict the scope of an agent’s knowledge in order to make sense of intentionally bringing about past events.     

On Devitt’s Defence of Realism

In this paper I question the view that realism must delineate the basic ontological furniture of the world rather than giving arguments in semantic or epistemic terms for the existence of a mind-independent world. I call this view of stating and defending realism the Ontological Defence of Realism (or ODR) and take Devitt’s account of realism as a paradigmatic case of ODR. I argue that ODR cannot block ‘verificationist antirealism’ because the specific (physical) nature of what exists is not enough to secure the mind-independence of what exists and, additionally, every element purported to achieve this, it compromises seriously the idea that realism is primarily an ontological issue. I also stress that ODR is in tension with a plausible realist insight namely the priority of the world over our theorizing. Because of this tension ODR weakens realism in several domains with no good reason. Specifically, I argue that in these domains ODR faces a dilemma: either to reject realism or to take realism to be dependent on a reductive account violating the realist insight. My point is that we should keep realism and ontology distinct and that compliance with the realist insight initiates a better strategy for the defence of realism. I address three possible objections thereby further clarifying my point. I conclude by presenting my view about the relation between ontology and realism.     

A Leaky Sort of Thing? The divisiveness of Michael Dummett

A note by the Editor: In the October issue o/New Blackfriars appeared an article by Professor Michael Dummett, 'A Remarkable Consensus'. In it the author discussed what he saw to be problems arising when Catholic theologians and seminary teachers publicly align themselves with the so-called 'liberal consensus': in other words, adopt opinions which, in the author's view, 'imply that, from the very earliest times, the Catholic Church, claiming to have a mission from God to safeguard divinely revealed truth, has taught and insisted on the acceptance of falsehoods'. He believed this to have happened on a wide-spread scale. He concluded that 'the divergence that now obtains between what the Catholic Church purports to believe and what large or important sections of it in fact believe ought …to be tolerated no longer: not if there is to be a rationale for belonging to that Church; not if there is to be any hope of reunion with the other half of Christendom; not if the Catholic Church is not to be a laughing-stock in the eyes of the world.' Here Professor Nicholas Lash reacts to Professor Dummett's article, and particularly to what he had to say about modern theologians and seminary teachers. In the next article Professor Dummett answers him.     

The cost of closure: logical realism,anti-exceptionalism,and theoretical equivalence

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 this commitment, as well as a 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, lessons about certain conceptions of naturalism as constraining the possibilities for metaphysics and the philosophy of logic.

     

Religion without Metaphysics1

In this paper I will argue for a conception of religion that does not presuppose metaphysics in the traditional sense of the word. In a trivial sense we always have ideas of what is given and are all realists, living by our realist intuitions. But the philosophically crucial question is what conclusions can be reasonably drawn from this. In Part I, I will argue against metaphysical realism in general. In Part II, I will argue against its materialist challenge by showing in what sense it too can be conceived of as an example of metaphysical realism. In Part III, I will show why there is no point in defending or in arguing against religion en bloc. Finally in Part IV, I will argue for a conception of religion without metaphysics in the traditional sense by taking account of the existential function religion actually has in human life.     

Putnam, Peano, and the Malin Génie: could we possibly bewrong about elementary number-theory?

This article examines Hilary Putnam's work in the philosophy of mathematics and - more specifically - his arguments against mathematical realism or objectivism. These include a wide range of considerations, from Gödel's incompleteness-theorem and the limits of axiomatic set-theory as formalised in the Löwenheim-Skolem proof to Wittgenstein's sceptical thoughts about rule-following (along with Saul Kripke's ‘scepticalsolution’), Michael Dummett's anti-realist philosophy of mathematics, and certain problems – as Putnam sees them – with the conceptual foundations of Peano arithmetic. He also adopts a thought-experimental approach – a variant of Descartes' dream scenario – in order to establish the in-principle possibility that we might be deceived by the apparent self-evidence of basic arithmetical truths or that it might be ‘rational’ to doubt them under some conceivable (even if imaginary) set of circumstances. Thus Putnam assumes that mathematical realism involves a self-contradictory ‘Platonist’ idea of our somehow having quasi-perceptual epistemic ‘contact’ with truths that in their very nature transcend the utmost reach of human cognitive grasp. On this account, quite simply, ‘nothing works’ in philosophy of mathematics since wecan either cling to that unworkable notion of objective (recognition-transcendent) truth or abandon mathematical realism in favour of a verificationist approach that restricts the range of admissible statements to those for which we happen to possess some means of proof or ascertainment. My essay puts the case, conversely, that these hyperbolic doubts are not forced upon us but result from a false understanding of mathematical realism – a curious mixture of idealist and empiricist themes – which effectively skews the debate toward a preordained sceptical conclusion. I then go on to mount a defence of mathematical realism with reference to recent work in this field and also to indicate some problems – as I seethem – with Putnam's thought-experimental approach as well ashis use of anti-realist arguments from Dummett, Kripke, Wittgenstein, and others.