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|Negation||GLU 121 f
Negation / Luhmann / GLU - has functional primacy, because it allows to keep the world accessible - negation has the form of reference to other possibilities - it establishes the world reference of social and psychic systems and makes it possible to constitute the meaning of every communication and every thought.
Einführung in die Systemtheorie Heidelberg 1992
Die Kunst der Gesellschaft Frankfurt 1997