How are the contents of our beliefs, our intentions, and other attitudes individuated? Just what makes our contents what they are? Content externalism, as Hilary Putnam, Tyler Burge, and others have argued, is the position that our contents depend in a constitutive manner on items in the external world, that they can be individuated by our causal interaction with the items they are about. Content internalism, by contrast, is the position that our contents depend primarily on the properties of our (...) bodies, such as our brains. Internalists, moreover, typically hold that our contents are narrow, insofar as they locally supervene on the properties of our bodies or brains. In this article surveys the arguments and problems for these contrasting positions. (shrink)

A large part of our exploration of the world consists in categorizing or classifying the objects and processes we encounter, both in scientific and everyday contexts. There are various, perhaps innumerable, ways to sort objects into different kinds or categories, but it is commonly assumed that, among the countless possible types of classifications, one group is privileged. Philosophy refers to such categories as natural kinds. Standard examples of such kinds include fundamental physical particles, chemical elements, and biological species. The term (...) natural does not imply that natural kinds ought to categorize only naturally occurring stuff or objects. Candidates for natural kinds can include man-made substances, such as synthetic elements, that can be created in a laboratory. The naturalness in question is not the naturalness of the entities being classified, but that of the groupings themselves. Groupings that are artificial or arbitrary are not natural; they are invented or imposed on nature. Natural kinds, on the other hand, are not invented, and many assume that scientific investigations should discover them. (shrink)

Externalism with regard to mental content says that in order to have certain types of intentional mental states (e.g. beliefs), it is necessary to be related to the environment in the right way.

Narrow mental content is a kind of mental content that does not depend on an individual's environment. Narrow content contrasts with “broad” or “wide” content, which depends on features of the individual's environment as well as on features of the individual. It is controversial whether there is any such thing as narrow content. Assuming that there is, it is also controversial what sort of content it is, what its relation to ordinary or “broad” content is, and how it is determined (...) by the individual's intrinsic properties. (shrink)

Universals are a class of mind independent entities, usually contrasted with individuals, postulated to ground and explain relations of qualitative identity and resemblance among individuals. Individuals are said to be similar in virtue of sharing universals. An apple and a ruby are both red, for example, and their common redness results from sharing a universal. If they are both red at the same time, the universal, red, must be in two places at once. This makes universals quite different from individuals, (...) and controversial. (shrink)

The approach can be characterized at two somewhat independent levels. The first is the overall framework for the theory of meaning, and how this framework is integrated into linguistics, philosophy of language, and cognitive science (section 1). The second is the formal machinery that has been developed to achieve the goals of this framework (sections 2 and 3). The general framework might be realized in terms of other formal approaches, and many aspects of the formal machinery can empirically motivated within (...) any framework for studying meaning. (shrink)