Putnam's Progress: Navigating between Strident Realism and Extreme Skepticism with a Wittgensteinian Chart, an Austinian Spyglass, and a Deweyan Compass

Books reviewed in this article:
Hilary Putnam, Pragmatism: An Open Question
Hilary Putnam, The Threefold Cord: Mind, Body, World     

The ontology of character traits in Hume

This paper argues that Hume can account for character traits as lasting mental qualities without violating his reductionist account of the mind as a changing bundle of ideas and impressions. It argues that a trait is a disposition to act according to certain passions or motivations, explained entirely with reference to the ideas and impressions constituting one's current self. This account is consistent with Hume's view of the mind, and relies solely on his accounts of the association of impressions and ideas, and of the relationship between belief and passion, to establish relations that can properly be called lasting mental qualities.     

The Price of Non-reductive Moral Realism

Non-reductive moral realism is the view that there are moral properties which cannot be reduced to natural properties. If moral properties exist, it is plausible that they strongly supervene on non-moral properties- more specifically, on mental, social, and biological properties. There may also be good reasons for thinking that moral properties are irreducible. However, strong supervenience and irreducibility seem incompatible. Strong supervenience entails that there is an enormous number of modal truths (specifically, truths about exactly which non-moral properties necessitate which moral properties); and all these modal truths must be explained. If these modal truths can all be explained, then it must be a fundamental truth about the essence of each moral property that the moral property is necessarily equivalent to some property that can be specified purely in mental, social and biological terms; and this fundamental truth appears to be a reduction of the moral property in question. The best way to resist this argument is by resorting to the claim that mental and social properties are not, strictly speaking, natural properties, but are instead properties that can only be analysed in partly normative terms. Acceptance of that claim is the price of non-reductive moral realism.     

Physicalism Without Reductionism: Toward a Scientifically, Philosophically, and Theologically Sound Portrait of Human Nature

This essay addresses three problems facing a physicalist (as opposed to dualist) account of the person. First, how can such an account fail to be reductive if mental events are neurological events and such events are governed by natural laws? Answering this question requires a reexamination of the concept of supervenience. Second, what is the epistemological status of nonreductive physicalism? Recent philosophy of science can be used to argue that there is reasonable scientific evidence for physicalism. Third, the soul has traditionally been seen as that which enables human beings to relate to God. What accounts for this capacity in a physicalist theory of the person? This essay argues that the same faculties that enable higher cognitive and emotional experience also account for the capacity for religious experience.     

Nancey Murphy's Work

Nancey Murphy has been influential in the religion-and-science field through her espousal of the work of Imre Lakatos, more recently developed into a three-tier approach to the joint epistemology of scientific and religious thought incorporating also the ideas of Hempel and MacIntyre. She has proposed a substantial influence of the radical reformed tradition on science and has demonstrated the nature of social influences on the form of Darwinism. She has developed important links between ethics and the science-theology debate and has examined in depth ideas associated with hierarchical structuring, supervenience, and the nature of the soul. Together these form a unique and sharply focused contribution to the understanding of the relation between science and religion.     

Nancey Murphy's Nonreductive Physicalism

This essay examines Nancey Murphy's commitment to downward causation and develops a critique of that notion based upon the distinction between the causal relevance of a higher-level event and its causal efficacy. I suggest the following: (1) nonreductive physicalism lacks adequate resources upon which to base an assertion of real causal power at the emergent, supervenient level; (2) supervenience's nonreductive nature ought not obscure the fact that it affirms an ontological determination of higher-level properties by those at the lower level; and (3) the notion of divine self-renunciation, while consonant with Murphy's claim of supervenient, divine action, is nonetheless problematic. Throughout, I claim that the question of the causal efficacy of a level is logically independent from the assertion of its conceptual or nomological nonreducibility.     

Neuroscience, the Person, and God: An Emergentist Account

Strong forms of dualism and eliminative materialism block any significant dialogue between the neurosciences and theology. The present article thus challenges the Sufficiency Thesis, according to which neuroscientific explanations will finally be sufficient to fully explain human behavior. It then explores the various ways in which neuroscientific results and theological interpretations contribute to an overall theory of the person. Supervenience theories, which hold that mental events are dependent on their physical substrata but not reducible to them, are explained. Challenging the determinism of "strong" supervenience, I defend a version of "soft" supervenience that allows for genuine mental causation. This view gives rise in turn to an emergentist theory of the person. Still, I remain a monist: there are many types of properties encountered in the world, although it is only the one nature that bears all these properties. The resulting position, emergentist monism , allows for diversity within the context of the one world. This view is open at the top for theological applications and interpretations while retaining the close link to neuroscientific study and its results. Theology offers an interpretation of the whole world based on a yet higher order of emergence, although the notion of God moves beyond the natural order as a whole. It therefore supplements the natural scientific study of the world without negating it.     

Supervenience and Basic Christian Beliefs

A field-oriented interpretation of Whiteheadian societies of actual occasions, when used to explain the notion of "strong supervenience" as applied to the mind-brain problem, allows one to claim that not only higher-level properties such as consciousness but even higher-level entities such as the mind or soul are emergent from lower-level systems of neuronal interaction. Moreover, it also explains the preexistence of God to the world and Christian belief in eternal life with the triune God in a way that is impossible within the limits of a theory of strong supervenience.     

Realism,Rational Action,and the Humean Theory of Motivation

Realists about practical reasons agree that judgments regarding reasons are beliefs. They disagree, however, over the question of how such beliefs motivate rational action. Some adopt a Humean conception of motivation, according to which beliefs about reasons must combine with independently existing desires in order to motivate rational action; others adopt an anti-Humean view, according to which beliefs can motivate rational action in their own right, either directly or by giving rise to a new desire that in turn motivates the action. I argue that the realist who adopts a Humean model for explaining rational action will have a difficult time giving a plausible account of the role that desire plays in this explanation. I explore four interpretations of this role and argue that none allows a Humean theory to explain rational action as convincingly as an anti-Humean theory does. The first two models, in different ways, make acting on a reason impossible. The third allows this possibility, but only by positing a reason-sensitive desire that itself demands an explanation. The fourth avoids this explanatory challenge only by retreating to an empty form of the Humean view. In contrast, an anti-Humean theory can provide an intuitively plausible explanation of rational action. I conclude that the realist about reasons should adopt an anti-Humean theory to explain rational action.

Debunking,supervenience, and Hume’s Principle

ABSTRACT

Debunking arguments against both moral and mathematical realism have been pressed, based on the claim that our moral and mathematical beliefs are insensitive to the moral/mathematical facts. In the mathematical case, I argue that the role of Hume’s Principle as a conceptual truth speaks against the debunkers’ claim that it is intelligible to imagine the facts about numbers being otherwise while our evolved responses remain the same. Analogously, I argue, the conceptual supervenience of the moral on the natural speaks presents a difficulty for the debunker’s claim that, had the moral facts been otherwise, our evolved moral beliefs would have remained the same.