the conjectural premise that social change occurs due to the struggle between different classes within society who contradict one another, a Marxist would conclude that capitalism exploits and oppresses the proletariat; therefore, capitalism will inevitably lead to a proletarian revolution. In a socialist society, private property—as the means of production—would be replaced by cooperative ownership. A socialist economy would not base production on the creation of private profits but on the criteria of satisfying human needs—that is, production for use. Friedrich Engels explained that "the capitalist mode of appropriation, in which the product enslaves first the producer, and then the appropriator, is replaced by the mode of appropriation of the products that is based upon the nature of the modern means of production; upon the one hand, direct social appropriation, as means to the maintenance and extension of production—on the other, direct individual appropriation, as means of subsistence and of enjoyment." Marxian economics and its proponents view capitalism as economically unsustainable and incapable of improving the population's living standards due to its need to compensate for the falling rate of profit by cutting employees' wages and social benefits while pursuing military aggression. The socialist mode of production would succeed capitalism as humanity's mode of production through revolution by workers. According to Marxian crisis theory, socialism is not an inevitability but an economic necessity. Etymology The term Marxism was popularised by Karl Kautsky, who considered himself an orthodox Marxist during the dispute between Marx's orthodox and revisionist followers. Kautsky's revisionist rival Eduard Bernstein also later adopted the term. Engels did not support using Marxism to describe either Marx's or his views. He claimed that the term was being abusively used as a rhetorical qualifier by those attempting to cast themselves as genuine followers of Marx while casting others in different terms, such as Lassallians. In 1882, Engels claimed that Marx had criticised self-proclaimed Marxist Paul Lafargue by saying that if Lafargue's views were considered Marxist, then "one thing is certain and that is that I am not a Marxist." Historical materialism Marxism uses a materialist methodology, referred to by Marx and Engels as the materialist conception of history and later better known as historical materialism, to analyse the underlying causes of societal development and change from the perspective of the collective ways in which humans make their living. Marx's account of the theory is in The German Ideology (1845) and the