 Compatibilist accounts of free action are typically event-causal views, invoking event-causal accounts of action. The simplest event-causal incompatibilist theory takes the requirements of a good compatibilist account and adds that certain agent-involving events that cause the action must nondeterministically cause it. When these conditions are satisfied, it is held, the agent exercises in performing her action a certain variety of active control (which is said to consist in the action’s being caused, in an appropriate way, by those agent-involving events), the action is performed for a reason, and there remains, until she acts, a chance of the agent’s not performing that action. (It might be required that there remains, until the action is performed, a chance that the agent will perform a different action instead right then.) It is thus said to be open to the agent to do otherwise, even given that (it is claimed) its being so open is incompatible with the truth of determinism.