Over time, Goldratt’s teachings took on lives beyond factories. Software teams began to see their deployment pipelines as flows; hospitals glimpsed constraints in operating rooms and imaging suites; service organizations found value in balancing tasks around capacity. The language of bottlenecks and throughput migrated into boardrooms and emergency rooms alike because it named a universal tension: finite capacity and infinite demand. The PDF copies of his work served as primers in these new fields, annotated now with domain-specific notes—how to interpret “inventory” in a clinic, or “lead time” in a development sprint.