Modernity. For systems theory, modernity implies that society is primarily ordered by the principle of functional differentiation. Modernization involves the ever more important and pronounced emergence of functionally distinct sub-systems (such as the economy, science, politics, law, education, religion, art, etc.) within the encompassing system of society. These functionally specialized social sub-systems are more or less autonomous and self-regulating. For instance: religion does not (or should not) interfere in science; politics does not (or should not) interfere in art; the economy should regulate itself via the free market; etc.