Co-authored with dani-weinberg and published on leanpub in 2014, this book is the second volume in a series extending and updating introduction-to-general-systems-thinking-1975. It addresses passive regulation — how systems maintain stability not through active intervention but through structural properties that absorb disturbance without requiring a controller.
Passive regulation works through redundancy, buffering, and structural diversity. A system with multiple pathways for achieving critical functions is harder to destabilize than one with a single critical path. These are properties designed in, not responses mounted — the regulation happens whether or not anyone is watching.
The implications for software and organizational systems are significant. Many systems that appear fragile are actually over-optimized: they have eliminated the "slack" and redundancy that provided passive regulation, making them more efficient under normal conditions and catastrophically vulnerable under abnormal ones. This analysis connects directly to the quality-software-management-framework's concern with anticipating change.
The collaboration with Dani Weinberg brings social science perspective to complement the technical systems orientation. Passive regulation appears in social systems too — norms, relationships, and institutional memory all provide buffering that active management cannot replace.
The series as a whole represents Weinberg returning to his most foundational theoretical work with four additional decades of application experience, making explicit what was only implicit in the 1975 original. The third volume in this series, active-regulation-general-systems-vol3-2014, extends the analysis to systems that regulate through active intervention and feedback control.