The SPT is an ongoing unification of many systems theories and much systems-level research into one comprehensive and very detailed general theory of systems. SPT stresses the mechanics of how sustainable systems WORK. What they do to remain stable. SPT also involves integrating past systems insights and findings from 7 historical developmental phases of systems research with the conventional natural sciences literature that studies phenomena of natural processes. We maintain that each of the natural phenomena is an instance of a systems and so studying natural phenomena (even via reductionist science) yields factual information important to understanding “systemness.”
Continues in link:
Systems Processes Theory (SPT) | Len Troncale’s Lifework
Systems Community of Inquiry 