Preciado: "Contrary to the generally accepted idea, women did not wait until the twentieth century to become part of the labor market. Their practice of fields of knowledge and their production of wealth were carefully ousted from the circuits of medieval economy so that such exclusion would strengthen early capitalism. Angela Davis has taught us that the 'white woman' as mother and housewife is an invention of modern capitalism: the creation of bourgeois concepts of wife and reproductive mother are accompanied by the economic devaluation of the household and the exclusion of housework from the productive sphere."