 But how convincing is the classical compatibilist account of free will? As it stands, it cries out for refinement. To cite just one shortcoming, various mental illnesses can cause a person to act as she wants and do so unencumbered; yet, intuitively, it would seem that she does not act of her own free will. For example, imagine a person suffering from a form of psychosis that causes full-fledged hallucinations. While hallucinating, she might “act as she wants unencumbered,” but she could hardly be said to be acting of her own free will. Consequently, the classical compatibilist owes us more. To see how it might be supplemented, we turn to a distinctively incompatibilist way of undermining classical compatibilism