History of economic thought its critics. Socialism emerged in response to the miserable living and working conditions of the working class in the new industrial era, and the classical economics from which it sprang. The economic and political theory published in "The Communist Manifesto" (1848) and "Das Kapital" (1867) combined with the dialectic theory of history inspired by Friedrich Hegel (1770–1831) to provide a revolutionary critique of nineteenth-century capitalism. In 1845 German radical Friedrich Engels (1820–1895) published "The Condition of the Working Class in England in 1844", describing workers in Manchester as "the most unconcealed pinnacle of social misery in our day." After Marx
Punctuated equilibrium in social theory groups and organizations, the history of science, physical science, and biological evolution - and found evidence for punctuated equilibria (as opposed to steady, incremental change) across those disparate systems. Applications of the theory have been in organizational theory, in the study of small work groups, in research on geographic communities and corporate behavior, and in the study of technological change. As some researchers have noted, the biological applications of punctuated equilibrium have rejuvenated a new "theory about change within entities." At the same time, social scientific applications of the punctuated equilibrium concept have been criticized for losing sight of a