3 Four Functional Systems · 3.5 System Boundaries
3.5 System Boundaries
Human Behavior FCA
This page is structured as definition, control variables, causal chain, observable outputs, and boundary, and serves as a canonical definition node in Human Behavior FCA.
SN, DMN, FP, and ECN are layered functional positions and are not interchangeable.
Boundary judgment must separate entry, interpretation, generation, maintenance, and feedback ownership.
Cross-layer interpretation directly causes breakpoint mislocalization.
Input ownership.
Interpretation ownership.
Generation ownership.
Execution ownership.
Feedback ownership.
Observable Output → Foreground Entry → Historical Template Matching and Explanation → New Structure Generation → Execution Maintenance → Feedback Update.
System boundaries require each node to perform only its own function and hand off to the next node.
When any node overreaches, the loop develops pseudo-stability and faulty recurrence.
Localization reports can explicitly assign breakdown to a specific node.
The same issue yields different intervention entry points across different nodes.
With clear boundaries, post-feedback relapse frequency declines.
DMN does not generate new structure.
FP does not perform long-term execution maintenance.
ECN does not invent new plans, and SN does not interpret.