Mental Fictionalism as an Undermotivated TheoryOur paper consists of three parts. In the first part we explain the concept of mental fictionalism. In the second part, we present the various versions of fictionalism and their main sources of motivation. We do this because in the third part we argue that mental fictionalism, as opposed to other versions of fictionalism, is a highly undermotivated theory.
What is mental fictionalism?We can distinguish between realist and antirealist approaches regarding each type of entity. You are a realist if you think that the entities of the type in question exist, and you are an antirealist if you think that they do not. You can be a realist about universals, physical objects, abstract entities and so on, while you remain an antirealist for example about God, scattered objects or finkish dispositions.However, we need to distinguish how the realist or the antirealist approaches the ontologicalmetaphysical issues from how he approaches discourse. The focus of this latter distinction is not on the existence or non-existence of some entities, but on the features of our mode of speech about these entities.According to Kalderon (2005, 95-113.), three distinct conditions have to be satisfied in order to be a realist about a discourse. (1) The sentences of the discourse express propositions about the putative subject matter of the discourse. (2) In uttering these sentences, we assert the truthconditions of the appropriate propositions. (3) At least most of these propositions are trueyou are justified in accepting them.In accordance with orthodoxy, we call the discourse about the mental 'folk psychology'. So, the three conditions of discourse about folk psychology are the following: (1) Sentences of folk psychology express propositions about mental facts. (2) In uttering sentences of folk psychology, we assert the truth-conditions of the appropriate propositions, namely the obtaining of mental facts. (3) Most of these propositions represent mental facts correctly, so they are mostly true.