Social Affinity Flow Theory (SAFT) is a new theoretical framework based upon Constructal Law (Bejan & Zane, 2012) and explains how this law uniquely operates within human social systems, whether within small groups, non-profits, multinational corporations, or societies. We investigate the relationship between SAFT, systems thinking, and the two archetypes of Tragedy of the Commons and Escalation, two frameworks that have proven useful to leaders and decision-makers. SAFT expands the applicability of the two archetypes and uncovers new insights with implications for multiple domains of human activity, including the practice of management.