{"query": "Autonomic Nervous System — the actuators", "count": 2, "results": [{"id": "card_ncs_l4_autonomic_actuators", "title": "Autonomic Nervous System — the actuators", "shelf": "regulation", "surface": "secular", "snippet": "Level 4 of the Nested Control-Systems stack. The physical state actuators: sympathetic/parasympathetic branches are the downstream effectors of hierarchical command, not the primary drivers of dysregu", "authority_tier": "reference", "source": "Autonomic physiology (sympathetic/parasympathetic effectors); downstream of L1–L3 control.", "readable": false, "generated": false}, {"id": "card_theory_control_theory___cybernetics__feedback__stability", "title": "Control theory & cybernetics (feedback, stability)", "shelf": "theories", "surface": "secular", "snippet": "Control theory & cybernetics (feedback, stability) — an engine domain that can touch it: operations_research. Calibration: partial — stability criteria and PID responses compute. Steer a system by the", "authority_tier": "reference", "source": "The Theory Assay — calibrated, not judged (docs/THEORY_CATALOG.md)", "readable": false, "generated": false}]}