Abstract

This thesis develops and defends epistemic fictionalism, according to which knowledge talk is metaphorical. One of the distinctive features of metaphor is that metaphorical sentences have multiple readings: a literal (or ‘face-value’) reading and at least one metaphorical (or ‘non-face-value’) reading. Typically, speakers who utter metaphorical sentences intend to communicate a content that corresponds to the metaphorical meaning. Epistemic fictionalism posits that, as is standard for metaphors, sentences of the form “S knows that P” admit of at least two different readings: a face-value (literal) reading, and a different non-face-value metaphorical reading. A face-value reading of sentences of the form “S knows that P” is that S is infallible with regards to P, and as such are always (or almost always) false at face-value. However, such sentences are not typically used to communicate their typically false face-value content, but some other, typically true metaphorical content. The thesis applies the methods of function-first epistemology (Craig 1990, Hannon 2019a), taking as a starting point the question of what knowledge talk is used for. I argue that understanding knowledge talk as metaphorical coheres with the function that knowledge talk plays, in spite of all (or most) knowledge attributions being literally false: there are advantages to communicating the non-face-value, metaphorical content. Another key advantage of epistemic fictionalism is that it explains the intuitions surrounding sceptical arguments. On the one hand, sceptical infallibilism is compelling because it is the correct analysis of the face-value content of knowledge attributions. On the other hand, sceptical infallibilism is not threatening to everyday knowledge attributions because it does not threaten the truth of the metaphorical content that knowledge attributions are typically used to express. Overall, the main aim of the thesis is to motivate epistemic fictionalism as a serious contender worthy of further investigation and development.