Due to its breadth and its incorporation of themes from Marx's earlier writings, the Grundrisse is central to Marx's body of work. Its subject matter includes production, relations of production, distribution, exchange, alienation, value, labor, capitalism, the rise of technology and automation, pre-capitalist forms of social organization, and the preconditions for a communist revolution. Scholars have noted major differences between Marx's earlier writings, such as The German Ideology and The Communist Manifesto, and the late ones, Das Kapital and Grundrisse,[1] suggesting that Marx's views evolved, though the main themes remained the same.