Brian Garrett

In ‘Bringing about the Past’ Michael Dummett attempted to defend the coherence of the idea of bringing about the past. I agree that bringing about the past is conceptually no more problematic than bringing about the future, but argue, against Dummett, that there is no need to restrict the scope of an agent’s knowledge in order to make sense of intentionally bringing about past events

In his well-known time travel story, David Lewis claims that there is a sense in which Tim can go back in time and kill his Grandfather and a (more inclusive) sense in which he cannot. Lewis describes Tim’s predicament as semi-fatalist, but holds that this does not compromise Tim’s freedom or his ability to kill Grandfather. I argue that if semi-fatalism is true of Tim, it is true of everyone, and that this is a troubling conclusion.