Niklas Luhmann’s Social Systems inaugurates a decisive post-humanist reconfiguration of sociological theory by relocating the foundation of the social from human actors to communication itself. Against traditions that derive society from consciousness, intention, or intersubjective consensus, Luhmann argues that social systems are not composed of persons but of communicative events that recursively reproduce the very networks from which they emerge. This shift is conceptually anchored in autopoiesis, borrowed from Maturana and Varela, through which Luhmann defines social systems as operationally closed yet cognitively open formations that generate and sustain their own elements. The consequence is profound: individuals do not constitute society; rather, they belong to its environment as psychic systems structurally coupled to communication. Society persists not because subjects act, but because communication produces further communication. This formulation displaces both phenomenology and action theory. Meaning is no longer grounded in intentional consciousness, but functions as the medium through which systems process complexity by selecting from an excess of possible references. Communication, accordingly, is not the transmission of thought from one subject to another, but the contingent synthesis of information, utterance, and understanding, each of which enables the next communicative operation. Luhmann’s celebrated reformulation of double contingency demonstrates this with particular force: social order emerges not from prior consensus, but from the improbable stabilisation of reciprocal uncertainty. A conversation, legal judgment, or scientific claim persists only insofar as it generates further communicative uptake. The social is thus neither substance nor collective will, but an emergent, self-referential order of recursive selections. Luhmann’s enduring achievement lies in showing that modern society is best understood not as a community of subjects, but as a differentiated ecology of communications reproducing itself through contingency, complexity, and systemic closure. Harvard citation: Luhmann, N. (1995) Social Systems. Stanford, CA: Stanford University Press.
