David Papineau, Jerry Fodor and many others wonder how the conjunction of the following three positions can be true: 1) Special science laws: There are lawlike generalizations in the special sciences. These sciences trade in kinds that are such that statements about salient, reliable correlations that are projectible and that support counterfactuals apply to the tokens coming under these kinds. 2) Non-reductionism: The laws of some of the special sciences cannot be reduced to physical laws. 3) Physicalism: Everything there is (...) in the world supervenes on the physical, that is, is fixed by the distribution of the physical properties in the world. The obvious problem is that (3) implies that the similarities among tokens in the world, accounting for the kinds in which the special sciences trade, and the correlations among such tokens, accounting for the laws of the special sciences, are fixed by the distribution of the physical properties. By contrast, (2) implies that some of the laws seizing such correlations are not reducible to physical laws. By using the term “token”, I mean a particular instantiating a property. Papineau’s proposal to reconcile these three positions is to account for (2) in terms of selection (pp. 6-9): There can be laws in the special sciences that are not reducible to physical laws if and only if these laws focus on effects that are selected for in a given context independently of the mechanisms by which they are brought about. Thus, the fact of there being such laws and their non-reducibility to physics do not contradict physicalism (3). The drawback is that the kinds that figure in such laws cannot enter into a rich network of laws 199 and that nothing can be causally efficacious insofar as it is a member of such a kind. In these comments, I shall try to push Papineau further in the direction of a reductive physicalism, thus solving the problem by simply abandoning (2).. (shrink)

It is often argued that higher-level special-science properties cannot be causally efficacious since the lower-level physical properties on which they supervene are doing all the causal work. This claim is usually derived from an exclusion principle stating that if a higher-level property F supervenes on a physical property F* that is causally sufficient for a property G, then F cannot cause G. We employ an account of causation as difference-making to show that the truth or falsity of this principle is (...) a contingent matter and derive necessary and sufficient conditions under which a version of it holds. We argue that one important instance of the principle, far from undermining non-reductive physicalism, actually supports the causal autonomy of certain higher-level properties. (shrink)

Once it is appreciated that it is not possible for an all-powerful, all-knowing, all-loving God to exist, the important question arises: What does exist that is closest to, and captures the best of what is in, the traditional conception of God? In this paper I set out to answer that question. The first step that needs to be taken is to sever the God-of-cosmic-power from the God-of-cosmic-value. The first is Einstein’s God, the underlying dynamic unity in the physical universe which (...) physics seeks to depict by means of a true, unified, physical “theory of everything”. Science has already achieved some theoretical knowledge of this God-of-cosmic-power. The second is what is of most value in our human world, and in the world of sentient life more generally. Having cut God in half in this way, our fundamental problem, intellectual and practical, becomes: How can the God-of-cosmic-value (as it is represented on earth at least) exist and best flourish within the God-of-cosmic-power? Or, in other words: How can what is of value associated with human life – and sentient life more generally – exist and best flourish within the physical universe? Clearly acknowledging that this is our fundamental problem, in academic inquiry, and in all that we do, might help what is of value in life to flourish rather better than it does at present. (shrink)

Non-reductive physicalism accepts the primacy of the physical while aiming to avoid the constraints of traditional reduction. It respects physicalism via the doctrine that all properties metaphysically supervene on physical properties. It avoids traditional reduction via the thesis that many properties cannot be type-identified with physical properties. The viability of non-reductive physicalism has been extensively discussed over the half-century since it was first explored by Putnam (1960, 1967) and Davidson (1970). Most of the debate has focused on whether non-reductive physicalism (...) can accommodate non-physical causes (cf Kim 1993; Robb and Heil 2003: sect 6.) However, there has been far less discussion of whether non-reductive physicalism can accommodate non-physical laws (though see Block 1997; Kim 1992; Macdonald 1992; Millikan 1999; Papineau 1985, 1992). In this chapter I wish to focus first on the issue of non-physical laws. This will turn out to cast some useful light on the question of non-physical causation. Not all non-reductive physicalists think that there are non-physical laws. Davidson, for example, does not (1976). Even so, it is widely supposed that there can be laws in ‘special sciences’ like biology, psychology, and economics even though their categories do not reduce to physical types. The locus classicus for this position is Fodor’s ‘Special Sciences’ (1974). Fodor made his analysis graphic in what must be the most-reproduced diagram in philosophy. (shrink)

In What’s Wrong With Microphysicalism?, Andreas H üttemann argues against the ontological priority of the microphysical, in favour of a ‘pluralism’ that accepts physical systems of all scales as interdependent equals. This is thoughtful and original work, deploying an understanding of the relevant physics to mount a serious challenge to the dominant microphysicalist view.

Physicalism is the thesis that everything is physical, or as contemporary philosophers sometimes put it, that everything supervenes on, or is necessitated by, the physical. The thesis is usually intended as a metaphysical thesis, parallel to the thesis attributed to the ancient Greek philosopher Thales, that everything is water, or the idealism of the 18th Century philosopher Berkeley, that everything is mental. The general idea is that the nature of the actual world (i.e. the universe and everything in it) conforms (...) to a certain condition, the condition of being physical. Of course, physicalists don't deny that the world might contain many items that at first glance don't seem physical — items of a biological, or psychological, or moral, or social nature. But they insist nevertheless that at the end of the day such items are either physical or supervene on the physical. (shrink)

I aim to reconcile two apparently conflicting theses: (a) Everything that can be explained, can be explained in purely physical terms, that is, using the machinery of fundamental physics, and (b) some properties that play an explanatory role in the higher level sciences are irreducible in the strong sense that they are physically undefinable: their nature cannot be described using the vocabulary of physics. I investigate the contribution that physically undefinable properties typically make to explanations in the high-level sciences, and (...) I show that when they are explanatorily relevant, it is in virtue of their extension (or something close) alone. They are irreducible because physics cannot capture their nature; this is no obstacle, however, to physics' more or less capturing their extension, which is all that it need do to duplicate their explanatory power. In the course of the argument, I sketch the outlines of an account of the explanation of physically contingent regularities, such as the regularities found in most branches of biological inquiry, at the center of which is an account of the nature of contingent, empirical bridge principles. (shrink)