The first system of democratic government, in ancient Athens, was direct not representative. More recently in his Social Contract, Jean-Jacques Rousseau argues that only a direct form of political participation, not a representative one, deserves to be referred to as truly democratic. Of course, it is generally acknowledged that there are great practical problems involved in operating a democracy directly on anything other than a small to moderately small scale. Further, some theorists, such as James Madison in the Federalist Papers, assume that a direct democracy would be unstable and too radical, risking mob rule.