Open Theism and the Contingent A Priori

Abstract Theological fatalists hold that divine omniscience is incompatible with free will. The most prominent argument for fatalism involves the premiss that in the remote past, god already knew what you would do today. In a recent paper in this journal, Fabio Lampert proposes a variant of this argument that only requires that god knew a contingent a priori logical truth. The open theist holds that in the remote past, it was indeterminate what you would do. This helps the open theist to respond to the original argument. I show that the indeterminacy acknowledged by the open theist also provides them with resources to respond to Lampert’s variant. They can motivate that some necessities are up to us and still accept that the theorems of the logic of actuality relevant to Lampert’s argument are determinately true.