Value-form
The Western Left academics are nowadays very happy to talk about "varieties of capitalism", but talking about "varieties of socialism" remains almost an absolute "no-no". Most Marxists continue to believe in "only one" (Marxian) socialism: either that, or nothing at all. "Either" a society or movement conforms to the true concept of socialism, "or" it does not; and if it does not, it "cannot be" socialism. However, precisely "because" there are many different Marxist beliefs about socialism, Marxists cannot agree among themselves whether Soviet-type societies were socialist, capitalist, or something else. Some countries meet with the moral expectations which Marxists have, and others do not.Originally Marx and Engels themselves had heckled the advocates of "true socialism", but later Friedrich Engels and Karl Kautsky promoted Marxist socialism as the one and true "scientific socialism" within the Socialist International. When he was 43 years old, Lenin stated: "The Marxist doctrine is omnipotent because it is true". Lenin's Communist International (a deliberate split with the social democrats) adopted Marxist socialism as its official political doctrine.
Economic determinism
According to Marx, each social mode of production produces the material conditions of its reproduction, that is, ideology (which gathers all the political, law and cultural spheres). Thus, ideology permits the mode of production to reproduce itself. Furthermore, Marx and Engels are said to have believed, should a revolutionary force change the mode of production, the dominant class will immediately set out to create a new society to protect this new economic order. In the modernity of their era, Marx and Engels felt the propertied class had essentially accomplished the establishment of a new societal and economic order, instinctively creating a society protective of their capitalist interests. They made this statement to the Bourgeoisie in the Communist Manifesto: "Your very ideas are but the outgrowth of conditions of your bourgeois production and bourgeois property, just as your jurisprudence is but the will of your class, made into law for all, a will whose essential character and direction are determined by the economic conditions of the existence of your class." The young Marx hence criticized man's alienation, a concept which he later replaced by the critique of commodity fetishism. "Vulgar Marxism" has considered that the relation between the economical infrastructure and the ideological superstructure was a unicausal one, and thus believed in economic determinism. Engels said "The final causes of all social changes and political revolution are to be sought, not in men's brains, not in man's insight into internal truth and justice... but in the economies of each epoch." Therefore, Engels advocated a revolution in economic structure as the only valid way of improving society and ending the oppression of the working class.