Online research in philosophy

Nonreductive materialism is the dominant position in the philosophy of mind. The global supervenience of the mental on the physical has been thought by some to capture the central idea of nonreductive materialism: that mental properties are ultimately dependent on, but irreducible to, physical properties. But Jaegwon Kim has argued that global psychophysical supervenience does not provide the materialist with the desired dependence of the mental on the physical, and in general that global supervenience is too weak to be an interesting dependence relation. We argue that these arguments are unsound. Along the way, we clarify the relationship between global and strong supervenience, and show clearly what sort of dependence global supervenience provides.

Nonreductive materialism is the dominant position in the philosophy of mind. The global supervenience of the mental on the physical has been thought by some to capture the central idea of nonreductive materialism: that mental properties are ultimately dependent on, but irreducible to, physical properties. But Jaegwon Kim has argued that global psychophysical supervenience does not provide the materialist with the desired dependence of the mental on the physical, and in general that global supervenience is too weak to be an interesting dependence relation. We argue that these arguments are unsound. Along the way, we clarify the relationship between global and strong supervenience, and show clearly what sort of dependence global supervenience provides.

Two versions of global supervenience have recently been distinguished from each other. I introduce a third version, which is more likely what people had in mind all along. However, I argue that one of the three versions is equivalent to strong supervenience in every sense that matters, and that neither of the other two versions counts as a genuine determination relation. I conclude that global supervenience has little metaphysically distinctive value.

Weak and global supervenience are equivalent to strong supervenience for intrinsic properties. Moreover, weak and global supervenience relations are always mere parts of a more general underlying strong supervenience relation. Most appeals to global supervenience, though, involve spatio-temporally relational properties; but here too, global and strong supervenience are equivalent. _Functionally_ we can characterize merely weak and global supervenience as follows: for A to supervene on B requires that at all worlds an individual’s A properties be a function of its B properties, where this function varies from world to world. But what are the.

Kim argues that weak and global supervenience are too weak to guarantee any sort of dependency. Of the three original forms of supervenience, strong, weak, and global, each commonly wielded across all branches of philosophy, two are thus cast aside as uninteresting or useless. His arguments, however, fail to appreciate the strength of weak and global supervenience. I investigate what weak and global supervenience relations are functionally and how they relate to strong supervenience. For a large class of properties, weak and global supervenience are equivalent to strong supervenience. I then offer a series of arguments showing that it is precisely because of their strength, not their weakness, that both weak and global supervenience are useless in characterizing any dependencies of interest to philosophers.

Theodore Sider distinguishes two notions of global supervenience: strong global supervenience and weak global supervenience. He then discusses some applications to general metaphysical questions. Most interestingly, Sider employs the weak notion in order to undermine a familiar argument against coincident distinct entities. In what follows, I reexamine the two notions and distinguish them from a third, intermediate, notion (intermediate global supervenience). I argue that (a) weak global supervenience is not an adequate notion of dependence; (b) weak global supervenience does not capture certain assumptions about coincidence relations; (c) these assumptions are better accommodated by the stronger notion of intermediate global supervenience; (d) intermediate global supervenience, however, is also not an adequate notion of dependence; and (e) strong global supervenience is an adequate notion of dependence. It also fits in with anti-individualism about the mental. It does not, however, serve to rebut arguments against coincident entities.

Supervenience was first used by Donald Davidson to describe the dependent and independent relationships between the mental and the physical. Jaegwon Kim presented a more precise definition, distinguishing between three types of supervenience: weak, strong and global. Kim further proved that strong and global supervenience are equivalent. However, three years later, Kim argued that strong supervenience is stronger than global supervenience, while weak supervenience and global supervenience are independent of each other. This paper demonstrates that Kim’s conclusion that weak supervenience and global supervenience are independent of each other is wrong. The strength of strong, weak and global supervenience decreases in turn with the latter entailed by the former. This paper also corrects some defects in Kim’s argument and his formulation of strong and weak supervenience, and then further explores the relationship between the three types of supervenience and their philosophical significance. It also classifies other terms of supervenience such as layered supervenience, macro-micro supervenience, and mereological superveniece as relationships of the strong, weak and global.