 Habermas has sided with other 20th-century commentators on Marx such as Hannah Arendt who have indicated concerns with the limits of totalitarian perspectives often associated with Marx's apparent over-estimation of the emancipatory potential of the forces of production.Arendt had presented this in her book "The Origins of Totalitarianism" and Habermas extends this critique in his writings on functional reductionism in the life-world in his "Lifeworld and System