Systems remain coherent only when they maintain a stable distinction between inside and outside.
Coherence requires a predictable rhythm for sensing, regeneration, and action.
Systems must be able to trace causes to effects.
Roles must remain stable and predictable.
Signals must remain anchored to the substrate they represent.
Systems require slack to restore structure faster than it is consumed.
Internal geometry must resist curvature‑induced drift.
Systems need deterministic fallback paths when coherence degrades.