Mark Greenberg

In this paper, I criticize an influential understanding of naturalization according to which work on traditional problems in the philosophy of law should be replaced with sociological or psychological explanations of how judges decide cases. W.V. Quine famously proposed the “naturalization of epistemology.” Quine argued that we should replace certain traditional philosophical inquiries into the justification of our beliefs with empirical psychological inquiry into how we actually form beliefs. In a prominent series of papers and a forthcoming book, Brian Leiter has raised the intriguing idea that Quine’s naturalization of epistemology is a useful model for philosophy of law. I examine Quine’s naturalization of epistemology and Leiter’s suggested parallel. I argue that the parallel does not hold up. I show that, granting Leiter’s substantive assumption that the law is indeterminate, there is no philosophical confusion or overreaching in the legal case that is parallel to the philosophical overreaching of foundationalism in epistemology. Moreover, if we take seriously Leiter’s analogy between, on the one hand, the justification of belief in scientific theories and, on the other, the justification of decisions in legal cases, the result is almost the opposite of what Leiter suggests. The closest parallel in the legal case to Quine’s position would be the rejection of the philosophical positions that lead to the indeterminacy thesis. Finally, the conclusion that law is indeterminate could not establish the bankruptcy of philosophical investigation into the relation between the grounds of law and the content of the law. After all, the argument for that conclusion depends on a philosophical account of the relation between the grounds of law and the content of law. The argument therefore presupposes that that relation is an appropriate subject for philosophical inquiry.

This paper was presented at the American Philosophical Association's 2007 Berger Prize session. It is a reply to Ken Himma's comment on my paper, "How Facts Make Law," which was awarded the 2007 Berger Prize for the outstanding paper in philosophy of law published during 2004 and 2005. In his thoughtful and thought-provoking paper, Himma claims that the argument of "How Facts Make Law" must go wrong somewhere because, if successful, the argument shows too much with too little. In particular, he claims that my argument, with very limited resources, reaches a conclusion that entails that subjectivist and non-cognitivist theories of morality are false. Himma insists that I should not be able to resolve such controversial debates in meta-ethics with no meta-ethical or even normative resources. My basic response has two parts. First, it is not correct that my conclusion entails that subjectivist and non-cognitivist theories of morality are false. My conclusion itself is neutral as to the metaphysics of morality. Second, it's not even true that my argument, if successful, shows that there must be moral facts. The reason is that I rely on the plausibility of the existence of moral facts (whatever their metaphysics) in arguing for my conclusion. In sum, my argument's conclusion doesn't get us nearly as far as Himma thinks. Nor are my argument's resources as meager as he claims.

Fodor’s asymmetric-dependence theory of content is probably the best known and most developed causal or informational theory of mental content. Many writers have attempted to provide counterexamples to Fodor’s theory. In this paper, I offer a more fundamental critique. I begin by attacking Fodor’s view of the dialectical situation. Fodor’s theory is cast in terms of laws covering the occurrence of an individual thinker’s mental symbols. I show that, contrary to Fodor’s view, we cannot restrict consideration to hypothetical cases in which his conditions for content are satisfied, but must consider whether the relevant laws exhibit the specified asymmetric-dependence relations in actual cases. My central argument is that the laws that the theory requires do not in fact exhibit the appropriate asymmetric-dependence relations. I show that, in general, part of the mechanism for the crucial, supposedly content-determining law for a mental symbol is not shared by the mechanisms for the other laws covering the occurrence of the same mental symbol. As a result, the former law can be eliminated (by eliminating the non-overlapping part of the mechanism) without eliminating the latter laws. The latter laws do not asymmetrically depend on the former law.

Tyler Burge’s influential arguments have convinced most philosophers that a thinker can have a thought involving a particular concept without fully grasping or having mastery of that concept. In Burge’s (1979) famous example, a thinker who lacks mastery of the concept of arthritis nonetheless has thoughts involving that concept. It is generally supposed, however, that this phenomenon – incomplete understanding, for short – does not require us to reconsider in a fundamental way what it is for a thought to involve a particular concept. In this paper, I argue that the real significance of incomplete understanding has not been appreciated. To the extent that theorists of content address the phenomenon of thoughts involving incompletely grasped contents at all, they tend to assume that some hand-waving about deference to other thinkers who fully grasp the relevant concepts will take care of the inconvenient cases of incomplete understanding. The main lesson of Burge’s arguments is often taken to be that the content of language and thought is socially determined. On this picture, we do not need to change our basic view about what it is to have a concept; we just need to recognize that some thinkers can manage to have a concept by piggybacking on others. In contrast, on the view I defend, taking incomplete understanding seriously forces us to rethink some of our most basic assumptions about the nature of mental content. Deference is a red herring. The role of society in determining the content of thought is not the main lesson, but at most a useful clue as to the nature of mental and linguistic content.

In this paper, I challenge an influential understanding of naturalization according to which work on traditional problems in the philosophy of law should be replaced with sociological or psychological explanations of how judges decide cases. W.V. Quine famously proposed the ‘naturalization of epistemology’. In a prominent series of papers and a book, Brian Leiter has raised the intriguing idea that Quine’s naturalization of epistemology is a useful model for philosophy of law. I examine Quine’s naturalization of epistemology and Leiter’s suggested parallel and argue that the parallel does not hold up. Even granting Leiter’s substantive assumption that the law is indeterminate, there is no philosophical confusion or overreaching in the legal case that is parallel to the philosophical overreaching of Cartesian foundationalism in epistemology. Moreover, if we take seriously Leiter’s analogy, the upshot is almost the opposite of what Leiter suggests. The closest parallel in the legal case to Quine’s position would be the rejection of the philosophical positions that lead to the indeterminacy thesis

The view (most prominently advocated by Justice Scalia) that original meaning entails the constitutionality of original practices has strong intuitive appeal and has been broadly assumed by originalists and nonoriginalists alike. But the position is mistaken. We suggest that a failure to distinguish between two different notions of meaning accounts for the position's wide currency. According to the first notion, the meaning of a term is roughly what a dictionary definition attempts to convey--the semantic or linguistic understanding necessary to use the term, as opposed to nonlinguistic facts about the objects or activities to which the term applies. In contrast, according to the second, looser notion, the meaning of a term incorporates the objects or activities to which the term is applied. The first notion lies behind originalism's theoretical force; it is untenable that the meaning of the Constitution in the first sense could evolve. In sharp contrast, it is not only tenable but inevitable that changes occur over time in the class of things to which a constitutional provision is applied. Once recognized, the distinction undermines the seemingly natural move from the necessity of interpreting the Constitution in accordance with how it was originally understood to the necessity of upholding practices originally understood to be constitutional. By taking the distinction on board and rejecting the assumption, originalism can readily deflect the challenges based on unacceptable original practices; as a consequence, however, it will not be tenable for originalism, in any case challenging an original practice, simply to rule out the possibility of the practice's invalidity.

In a recent paper, I launch an attack on a fundamental doctrine of legal positivism. I argue that nonnormative facts cannot themselves constitutively determine the content of the law. In a response published in this journal, Ram Neta defends the view that nonnormative social facts are sufficient to determine normative facts, including both moral and legal facts. Neta's paper provides a useful opportunity to address a spelled-out version of this view, which in various forms is widely held in philosophy of law and other areas of philosophy. I begin by addressing Neta's attempts to show that descriptive facts can alone determine moral and legal facts. First, Neta's account of why it is wrong to break promises fails. In addition to other problems, it begs the question by taking for granted that a person's desires or other motivational states necessarily justify the actions that they motivate. Next, I turn to Neta's attempt to provide a counterexample to my view about law. In my original paper, I claim that the nature of the constitutive determination relation in the legal domain is what I call rationaldetermination. Roughly speaking, a full constitutive account of the legal facts must include reasons that explain the relation between the determining facts and the legal facts. The facts on which Neta's putative counterexample depends cannot be reasons of the required sort because they take for granted what they are supposed to explain—the way in which nonnormative social facts contribute to the content of the law. Finally, I address the larger issue of how far my argument applies to other domains. I consider and reject Neta's argument that purports to show that all normative domains have the relevant features of the legal domain. I then sketch a competing picture of some normative domains

In a circulated but heretofore unpublished 2001 paper, I argued that Leiter's analogy to Quine's 'naturalization of epistemology' does not do the philosophical work Leiter suggests. I revisit the issues in this new essay. I first show that Leiter's replies to my arguments fail. Most significantly, if — contrary to the genuinely naturalistic reading of Quine that I advanced — Quine is understood as claiming that we have no vantage point from which to address whether belief in scientific theories is ever justified, it would not help Leiter's parallel. Given Leiter's way of drawing the parallel, the analogous position in the legal case would be not the Legal Realists' indeterminacy thesis, but the very different position that we have no vantage point from which to address whether legal decisions can ever be justified. I then go on to address the more important question of whether the indeterminacy thesis, if true, would support any replacement of important legal philosophical questions with empirical ones. Although Ronald Dworkin has argued against the indeterminacy thesis, if he were wrong on this issue, it would not in any way suggest that the questions with which Dworkin is centrally concerned cannot fruitfully be addressed. The indeterminacy thesis is a bone of contention in an ordinary philosophical debate between its proponents and Dworkin. Of course, if the determinacy thesis were true, no one should try to show that it is false, but this triviality lends no support to the kind of replacement proposal that Leiter proposes. I conclude with some general reflections on naturalism and philosophical methodology