Triangular Externalism

Triangular externalism is the view that a subject's thought content is determined by the communication the subject has with others about objects or events in the shared public environment. The process of triangulation is said to constitute thought content. Section 1 characterizes triangular externalism and sets it apart from other forms of content externalism. Section 2 is concerned with the tensions within Davidson's views: the tension between historical externalism and interpretationism, as well as the tension between triangular externalism and holism. Section 3 explicates Davidson's criticisms of two rival forms of externalism: Putnam's physical externalism and Burge's anti‐individualism. Sections 4 and 5 contain a critical discussion of Davidson's arguments for triangular externalism: the argument from content determination and the argument from objectivity.