 Call this simplified argument the Source Incompatibilist Argument. It is important to see that the demand for alternative possibilities is not (at least not obviously) relevant to this incompatibilist argument. Suppose that a putatively freely willing agent had access to the relevant sort of alternative possibilities. According to the Source Incompatibilist Argument, a further condition is that she must have been the ultimate source of her freely willed actions. That is, the sourcehood theorist denies that alternative possibilities are enough to guarantee freedom.