David Lewis famously argued that the time traveller ‘can’ murder her grandfather, even though she never will: it is compossible with a particular set of facts including her motive, opportunity and skill . I argue that while ordinary agents ‘can’ under Lewis’s conception, philosophers cannot – the latter will not only fail to fulfill their homicidal intentions but also fail to form them in the first place.

This paper outlines a new method for identifying folk intuitions to complement armchair intuiting and experimental philosophy, and thereby enrich the philosopher’s toolkit. This new approach—trope analysis—depends not on what people report their intuitions to be but rather on what they have made and engaged with; I propose that tropes in fiction reveal which theories, concepts and ideas we find intuitive, repeatedly and en masse. Imagination plays a dual role in both existing methods and this new approach: it enables us (...) to create the scenarios that elicit our intuitions, and also to mentally represent them. The method I propose allows us to leverage the imagination of the many rather than the few on both counts—scenarios are both created and consumed by the folk themselves. (shrink)

Causal loops are a recurring feature in the philosophy of time travel, where it is generally agreed that they are logically possible but may come with a theoretical cost. This paper introduces an unfamiliar set of causal loop cases involving knowledge or beliefs about the future: self-fulfilling prophecy loops (SFP loops). I show how and when such loops arise and consider their relationship to more familiar causal loops.

“Foreknowledge, Fate and Freedom” is concerned with diagnosing and debunking a pervasive and prevalent folk intuition: that a foreknown future would be problematically, and freedom-hinderingly, fixed. In it, I discuss foreknowledge in and of itself, but also as a lens through which we can examine other intuitions and concepts: the apparent asymmetry of future and past; worries about fate and free will; notions of coincidence and likelihood; assumptions about God, time travel and ourselves. This thesis provides the first philosophical map (...) of a region of conceptual space visited often by the folk and popular culture, and as a result ties together a host of disparate threads in the literature. I make three central claims: 1. The folk intuition is wrong in rejecting foreknowledge wholesale on the basis that it entails a problematically fixed future, and thereby undermines our freedom. 2. Foreknowledge gives rise to new problems, and sheds new light on old ones, but none of these are insurmountable. 3. The same paradoxes thought to plague backwards time travel can arise in foreknowledge cases, and can be defused in the same way. I conclude that foreknowledge is puzzling, but possible: it neither inevitably entails fatalism nor precludes free will. While its consequences may be strange, they are not sufficient to vindicate the folk intuition. (shrink)