Laura Schroeter

In Constructing the World, Chalmers seeks to articulate and defend an important epistemic accessibility thesis, the Scrutability of Truth, which is crucial to Chalmers’ rationalist approach to meaning and modality. Chapters 3 and 4 of the book are devoted to persuading us that the move from weaker to stronger forms of Scrutability is intuitively plausible. In these comments, I want to question this move. The plausibility of strong forms of Scrutability hinges on controversial views about epistemic norms for answering ‘what is x?’ questions that semantic externalists have good reason to reject

Frank Jackson often writes as if his descriptivist account of public language meanings were just plain common sense. How else are we to explain how different speakers manage to communicate using a public language? And how else can we explain how individuals arrive at confident judgments about the reference of their words in hypothetical scenarios? Our aim in this paper is to show just how controversial the psychological assumptions behind in Jackson’s semantic theory really are. First, we explain how Jackson’s theory goes well beyond the commonsense platitudes he cites in its defence. Second, we sketch an alternative explanation of those platitudes, the jazz model of meaning, which we argue is more psychologically realistic. We conclude that the psychological picture presupposed by Jackson’s semantic theory stands in need of a much more substantial defence than he has so far offered.

This paper articulates two constraints on an acceptable account of meaning: (i) accessibility: sameness of meaning affords an immediate appearance of de jure co-reference, (ii) flexibility: sameness of meaning tolerates open-ended variation in speakers' substantive understanding of the reference. Traditional accounts of meaning have trouble simultaneously satisfying both constraints. I suggest that relationally individuated meanings provide a promising way of avoiding this tension. On relational accounts, we bootstrap our way to de jure co-reference: the subjective appearance of de jure co-reference helps make it the case that two token representations really do co-refer

Two-dimensional (2D) semantics is a formal framework that is used to characterize the meaning of certain linguistic expressions and the entailment relations among sentences containing them. 2D semantics has also been applied to thought contents. In contrast with standard possible worlds semantics, 2D semantics assigns extensions and truth-values to expressions relative to two possible world parameters, rather than just one. So a 2D semantic framework provides finer-grained semantic values than those available within standard possible world semantics, while using the same basic model-theoretic resources. The 2D framework itself is just a formal tool. To develop a semantic theory for someone’s language, a proponent of 2D semantics must do three things: (i) explain what exactly the two possible world parameters represent, (ii) explain the rules for assigning 2D semantic values to a person’s words and sentences, and (iii) explain how 2D semantic values help in understanding the meanings of the person’s words and sentences

This paper examines whether realists can explain co-reference without appealing to subjects’ ideal convergence in judgment. This question is particularly pressing in the normative domain, since deep disagreement about the applicability of normative predicates suggests that different speakers may not pick out the same property when they use normative terms. Normative realists, we believe, have not been sufficiently aware of the difficulties involved in providing a theory of reference-determination. Our aim in this paper is to clarify the nature of this reference-fixing task and the challenges that arise for a non-convergentist normative realist. Our focal point will be Richard Boyd’s externalist account, which has been a model for non-convergentist theories of reference in metaethics. A close examination of Boyd’s account of reference and the ways it could be developed or supplemented, we’ll argue, suggests that explaining co-reference without convergence in the normative domain is a more challenging problem than many realists have supposed

Frank Jackson and David Chalmers have suggested that the diagonal intensions defined by their two-dimensional framework can play the two key roles of Fregean senses: they provide a priori accessible extension conditions for a representation and they provide the identity conditions for meanings and thought contents. In this paper, I clarify the nature of the psychological abilities that are needed to underwrite the first role. I then argue that these psychological abilities are not sufficiently stable or cognitively salient to individuate meanings or thought contents

In Our Knowledge of the Internal World, Robert Stalnaker presents a sophisticated new defense of a radically externalist and contextualist approach to mental content. Stalnaker holds that unstructured propositions—sets of possible worlds—can provide a complete account of mental content, including Fregean cognitive significance phenomena. So there is no theoretical job for concepts to fulfill. Stalnaker sees concepts as ‘creatures of darkness’ that encourage theoretical confusion. Concepts are a vestige of the mistaken internalist picture of the mind: internal states that are supposed to ensure transparent access to the objects, kinds, or properties our thoughts represent. I argue there are better reasons for positing concepts—reasons that are independent of the internalist project.

In recent years, two-dimensional (2D) semantics has been used to develop a broadly descriptivist approach to meaning that seeks to accommodate externalists’ counterexamples to traditional descriptivism. The 2D possible worlds framework can be used to capture a speaker’s implicit dispositions to identify the reference of her words on the basis of empirical information about her actual environment. Proponents of 2D semantics argue that this aspect of linguistic understanding plays the core theoretical role of meanings: 2D semantics allows us to specify a reference-fixing criterion implicit mastery of which constitutes semantic competence a particular meaning.