Abstract

The thesis of this paper is that an agent S has the power to bring it about that a proposition p is or will be true at a moment t only if S has at the same time the power to bring it about that it has always been the case that p would be true at t. The author first constructs a prima facie compelling argument for logical determinism and then argues that whoever accepts an Ockhamistic response to that argument should also accept the above thesis.