Does the social world supervene upon facts about individuals and the physical environment of action? Brian Epstein argues not in several places, most notably in "Ontological Individualism Reconsidered" (2009; link). (I plan to treat Epstein's more recent arguments in his very interesting book The Ant Trap: Rebuilding the Foundations of the Social Sciences in a later post.) The core of his argument is the idea that there are other factors influencing social facts besides facts about individuals. Social facts then fail to supervene in the strict sense: they depend on facts other than facts about individuals. There are indeed differences at the level of the social that do not correspond to a difference in the facts at the level of the individual. Here is how Epstein puts the core of his argument:
My aim in this paper is to challenge this [the idea that individualism is simply the denial of spooky social autonomy]. But ontological individualism is a stronger thesis than this, and on any plausible interpretation, it is false. The reason is not that social properties are determined by something other than physical properties of the world. Instead it is that social properties are often determined by physical ones that cannot plausibly be taken to be individualistic properties of persons. Only if the thesis of ontological individualism is weakened to the point that it is equivalent to physicalism can it be true, but then it fails to be a thesis about the determination of social properties by individualistic ones. (3)And here is how Epstein formulates the claim of weakly local supervenience of social properties upon individual properties:
Social properties weakly locally supervene on individualistic properties if and only if for any possible world w and any entities x and y in w, if x and y are individualistically indiscernible in w, then they are socially indiscernible in w. Two objects are individualistically- or socially-indiscernible if and only if they are exactly like with respect to every individualistic property or every social property, respectively. (9)The causal story for supervenience of the social upon the individual perhaps looks like this:
In this case supervenience fails because there can be differences in S without any difference in I (because of differences in O).
But maybe the situation is even worse, as emergentists want to hold:
In one sense Epstein's line of thought is fairly easy to grasp. The outcome of a game of baseball between the New York Yankees and the Boston Red Sox depends largely on the actions of the players on the field and in the dugout; but not entirely and strictly. There are background facts and circumstances that also influence the outcome but are not present in the motions and thoughts of the players. The rules of baseball are not embodied on the field or in the minds of the players; so there may be possible worlds in which the same pitches, swings, impacts of bats on balls, catches, etc., occur; and yet the outcome of the game is different. The Boston pitcher may be subsequently found to be ineligible to play that day, and the Red Sox are held to forfeit the game. The rule in our world holds that "tie goes to the runner"; whereas in alto-world it may be that the tie goes to the defensive team; and this means that the two-run homer in the ninth does not result in two runs, but rather the final out. So the game does not depend on the actions of the players alone, but on distant and abstract facts about the rules of the game.
So, according to Epstein, local supervenience of the social upon the individual fails. What about global supervenience? He believes that this relation fails as well. And this is because, for Epstein, "social properties are determined by physical properties that are not plausibly the properties of individuals" (20). These are the "other facts" in the diagrams above. His simplest illustration is this: without cellos there can be no cellists (24). And without hanging chads, George W. Bush would not have been President. And, later, one can be an environmental criminal because of a set of facts that were both distant and unknown to the individual at the time of a certain action (33).
Epstein's analysis is careful and convincing in its own terms. Given the modal specification of the meaning of supervenience (as offered by Jaegwon Kim and successors), Epstein makes a powerful case for believing that the social does not supervene upon the individual in a technical and specifiable sense. However, I'm not sure that very much follows from this finding. For researchers within the general school of thought of "actor-centered sociology", their research strategy is likely to remain one that seeks to sort out the mechanisms through which social outcomes of interest are created as a result of the actions and interactions of individuals. If Epstein's arguments are accepted, that implies that we should not couch that research strategy in terms of the idea of supervenience. But this does not invalidate the strategy, or the broad intuition about the relation between the social and the actions of locally situated actors upon which it rests. These are the intuitions that I try to express through the idea of "methodological localism"; link, link. And since I also want to argue for the possibility of "relative explanatory autonomy" for facts at the level of the social (for example, features of an organization; link), I am not too troubled by the failure of a view of the social and individual that denies strict determination of the former by the latter. (Here is an earlier post where I wrestled with the idea of supervenience; link.)
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