Abstract

A-theories of time claim to best respect common sense, whereas B-theories of time typically eschew common sense and instead draw their inspiration from science, in particular relativity theory. For 100 years the battle lines have tended to be drawn over the existence of a universal present. Less prominently, but nevertheless well-known for the last 50 years, similar battle lines have been drawn over the possibility of closed time-like curves. In this battle A-theorists have argued that closed time-like curves are incompatible with common sense and hence are impossible. In this paper I show how A-theory can be reconciled with the existence of closed time-like curves, albeit with some theoretical loss. I argue, however, that given that A-theorists tend to also hold that time travel would entail restrictions on free will, they might actually welcome this particular theoretical loss.