 Despite these compatibilist replies, to some the idea that the entirety of a free agent’s life can be determined, and in this way controlled, by another agent will seem incredible. Some take the lesson of the Manipulation Argument to be that no compatibilist account of sourcehood or self-determination is satisfactory. True sourcehood—the kind of sourcehood that can actually ground an agent’s freedom and responsibility—requires, so it is argued, that one’s action not be causally determined by factors beyond one’s control.