 To help better situate compatibilist theories, we will now consider in more detail the arguments that incompatibilists have advanced on behalf of their own theories, since it is these arguments that have shaped the contours of compatibilist theories. As we mentioned above, the truth of causal determinism apparently poses a problem for freedom and responsibility in at least two ways. First, it might entail that no one has the freedom to do otherwise, which is a kind of power or control over one’s actions that many have regarded as necessary for moral responsibility. Second, it might entail that no one is the ultimate causal source of his or her actions. That our actions originate in our free will and not in forces outside of us also seems like a plausible condition on morally responsible agency. We take each of these potential threats in turn.