Gabriel Segal

The paper begins with the assumption that psychological event tokens are identical to or constituted from physical events. It then articulates a familiar apparent problem concerning the causal role of psychological properties. If they do not reduce to physical properties, then either they must be epiphenomenal or any effects they cause must also be caused by physical properties, and hence be overdetermined. It then argues that both epiphenomenalism and over‐determinationism are prima facie perfectly reasonable and relatively unproblematic views. The paper proceeds to argue against Kim’s (Kim, 2000, 2005) attempt to articulate a plausible version of reductionism. It is then argued that psychological properties, along with paradigmatically causally efficacious macro‐properties, such as toughness, are causally inefficacious in respect of their possessor’s typical effects, because they are insufficiently distinct from those effects. It is finally suggested that the distinction between epiphenomenalism and overdeterminationism may be more terminological than real.

This article says something about previous work related to truth and meaning, goes on to discuss Davidson and related papers of his, and then discusses some issues arising. It begins with the work of Gottlob Frege. Much work in the twentieth century developed Frege's ideas. A great deal of that work continued with the assumption that semantics is fundamentally concerned with the assignments of entities to expressions. So, for example, those who tried to develop a formal account of sense did so by treating senses as functions of various kinds; the sense of a predicate, for example, was often seen as a function from possible worlds to extensions.