For ten points, name this former Harvard sociologist and author of The Structure of Social Action.
By the late 1950s he had introduced the term "cybernetic hierarchy" to differentiate between high-energy and high-information subsystems as a part of his model of "double interchange." This was a reevaluation of an earlier study that posited the existence of pattern variables like ascription and achievement and affectivity and neutrality, as well as a "four function" schema of adaptation, goal attainment, latency, and integration. Those things comprise this thinker's AGIL Paradigm, and other than The Social System, he penned a more famous work that isolated elements, ends, means, and norms to analyze the "unit act." For ten points, name this former Harvard sociologist and author of The Structure of Social Action.
By the late 1950s he had introduced the term "cybernetic hierarchy" to differentiate between high-energy and high-information subsystems as a part of his model of "double interchange.
Talcott Parsons