<b>This is a work of system-think on why breakthroughs mostly don’t sustain.</b> <p>In answer, it recalls mutual learning, by which the exceptional have defied the norms of decline since before humans could write about it. Part 1 shows the mechanics how complex adaptive systems extend order—Hayek’s catallaxy. How lean exploits this is unpacked. Part 2 isolates popular fallacies of control that incentivize undoing. Part 3 offers countermeasures—leveled exploration and exploitation in strategy deployment, standard work, and development of employees, products, services, and methods.</p><p>Lean turns paradigms and routines from holding on, to sustainably moving on. Lean is not just a factory thing. Lessons abound in nature’s fractals and adaptations, admin, and history too; from the present back through World War II, the Industrial Revolution, the Reformation, to its roots in the civilizing of Antiquity. </p><p>Learners mine hard lessons while knowers sadly repeat them. Great sources on catallaxy—Juran, Hayek, Popper, Kuhn, Sproul, Rother, March—have left us rich deposits of distilled experience. Sustain is a trail guide, locating pivotal insights to defy the entropy of abandon-and-revert, in any enterprise that coordinates resources, time, and treasure in the face of varying, alternative uses.</p>