In a primarily stratified or centralized society, there can be no individuality in the modern sense. The same can be said for the public. There was no public in pre-modern society because there was no individual. The individual/pubic distinction arose together as a result of functional differentiation, which legally separated the individual off from the family
The most controversial claim made by Luhmann is that society consists not of “actual people and relations between people,” but rather communication–and only communication. Society is a communication system, and there are a number of distinct subsystems that have evolved; yet they are all “communication systems” (Luhmann, Introduction to Systems Theory, 28).