Jaegwon Kim

(1934 - 2019)

Jackson says that the form of physicalism that I recommend, with certain emendations he believes are necessary, turns out to be none other than the “Australian” type-type identity theory of J.J.C. Smart and others. About this, too, I have no serious disagreement, although Jackson’s claim appears to depend, at least in part, on a certain chosen reading of the texts involved. In fact, one point of similarity may be worth noting. As I take it, one special feature of the “Australian” type identity theory is the claim that mental-physical identities are contingent, not necessary. Suppose M has a single physical realizer, P. On my account, the statement that M = P is not metaphysically or logically necessary. It is contingent since the statement that P realizes M is contingent. This is so because for P to realize M is for it to fulfill the causal specification that defines M, and what causal relations P actually enters into is a question that depends on the laws prevailing in a given world. Thus, P may be a realizer of M in this world but perhaps not in another in which different laws hold; in some worlds M may have no realizers at all. None of this is in violation of the idea that identities are necessary. For, according to me, if M has realizers, M is a functional property defined by a causal specification. This means that “M” is not a rigid designator, though it is, as we might call it, “nomologically rigid” or “semi-rigid”.

Jackson says that the form of physicalism that I recommend, with certain emendations he believes are necessary, turns out to be none other than the “Australian” type-type identity theory of J.J.C. Smart and others. About this, too, I have no serious disagreement, although Jackson’s claim appears to depend, at least in part, on a certain chosen reading of the texts involved. In fact, one point of similarity may be worth noting. As I take it, one special feature of the “Australian” type identity theory is the claim that mental-physical identities are contingent, not necessary. Suppose M has a single physical realizer, P. On my account, the statement that M = P is not metaphysically or logically necessary. It is contingent since the statement that P realizes M is contingent. This is so because for P to realize M is for it to fulfill the causal specification that defines M, and what causal relations P actually enters into is a question that depends on the laws prevailing in a given world. Thus, P may be a realizer of M in this world but perhaps not in another in which different laws hold; in some worlds M may have no realizers at all. None of this is in violation of the idea that identities are necessary. For, according to me, if M has realizers, M is a functional property defined by a causal specification. This means that “M” is not a rigid designator, though it is, as we might call it, “nomologically rigid” or “semi-rigid”.

A plausible terminus for the mind-body debate begins by embracing ontological physicalism—the view that there is only one kind of substance in the concrete world, and that it is material substance. Taking mental causation seriously, this terminus also embraces conditional reductionism, the thesis that only physically reducible (i.e., functionalizable) mental properties can be causally efficacious. Intentional/cognitive properties (what David Chalmers calls “psychological” aspects of mind) are physically reducible, but qualia (“phenomenal” aspects of mind) are not. In saving the causal efficacy of intentional/cognitive properties, we save cognition and agency—and even relational facts about the similarities and differences between qualia—but not the intrinsic qualities of qualia themselves, which are physically irreducible and thus causally impotent. As there seems no credible alternative to physicalism as a general worldview, and this is as much physicalism as we can have, physicalism is not the whole truth—but it is the truth near enough. [1. Cartesian Minds Eliminated] [2. The Collapse of Property Dualism] [3. Physicalism at a Crossroads] [4. Can We Reduce Minds?] [5. Living with the Mental Residue] [6. Where We Are with the Mind-Body Problem] [7. Beyond the Mind-Body Problem: Self and Subjectivity]

Concerns about the efficacy of consciousness can arise either as part of a broad concern about the efficacy of mentality in general, or as a more specific worry focusing on conscious mental states, or the conscious aspects of mental states. This chapter discusses in detail why the two issues, the general one concerning the mental, and the more specific issue about consciousness, have come to be distinguished and how they relate to each other. It discusses the epiphenomenalist arguments of the nineteenth‐century biologist T. H. The experiments and observations that moved Huxley to embrace epiphenomenalism were basically of the following sort: animals for which we have compelling anatomical evidence that they are not conscious can perform activities of the kind that we normally take to require consciousness. The epiphenomenalist arguments follow only on the assumption that the mental is not reducible to the physical; namely, the assumption that reductionist physicalism has been ruled out.

Thoroughly updated, the second edition of this highly successful textbook continues to represent the most comprehensive and authoritative collection of canonical readings in metaphysics. In addition to updated material from the first edition, it presents entirely new sections on ontology and the metaphysics of material objects. One of the most comprehensive and authoritative metaphysics anthologies available - now updated and expanded Offers the most important contemporary works on the central issues of metaphysics Includes new sections on ontology and the metaphysics of material objects, as well as readings on the topics of fictionalism, fundamentality, tropes, vague identity, temporary intrinsics, stage theory, and composition Surpasses other anthologies in its combination of contributions from leading metaphysicians and a younger generation of "rising-stars"