{
  "handle": "EndogenousStress",
  "gloss": "The internal load a system carries from being partly prepared for possible external stressors",
  "mechanism": "In a {{fractional_meta_model}}, functions prepared for a possible {{exogenous_stress}} are partly built: data processed through two pipeline stages but not the third, passwords memorable but not yet valid, components readied for a server failure. This preparedness costs effort without yet producing output, and it shows up as friction, a raised {{computational_entropy_rate}} in the system's channels. That internal load is endogenous stress. Its rational level rises with the likelihood of the exogenous stressor: the more likely the event, the more partial preparation is worth carrying, because completing a function then takes only a small change. A system can be over-stressed (carrying preparation for stressors that will not come, which should be removed) or under-stressed (unprepared for likely stressors, which should be built up). Stress is thereby a measurable technical quantity in software, organisations and cells, not only a description of a biological pathway.",
  "invariants": [
    "Endogenous stress is proportional to the partly built functions a system carries",
    "Its rational level rises with the likelihood of the corresponding exogenous stressor",
    "High endogenous stress means a small change completes the prepared function"
  ],
  "failure_modes": [
    "Eliminating all internal friction as inefficiency and so removing preparedness",
    "Carrying preparation for stressors that have become unlikely",
    "Measuring stress only as a symptom, not as information about expected exogenous stressors"
  ],
  "_meta": {
    "path": [
      "Mind",
      "Strategy"
    ],
    "ring": 2,
    "tier": 2,
    "source": "Adam Timlett, On the Origin of Risk (2025), Technical Appendix I p.147-151, Appendix II p.155"
  },
  "sema_id": "sema:EndogenousStress#mh:SHA-256:5367f1ad026491329822553c265a3e9fefb5555dc7779d8bb5f772ce6af86aa2",
  "sema_ref": "EndogenousStress#5367",
  "sema_stub": "5367",
  "dependencies": {
    "references": {
      "computational_entropy_rate": "sema:ComputationalEntropyRate#mh:SHA-256:4f452b8ec7cb60a7e69fa5509ed17eaa33a77019be8631a7bbb71ae1a24c9144",
      "exogenous_stress": "sema:ExogenousStress#mh:SHA-256:6a33d65f1361a95ad72b8a8d59c90bf253e08f804e2a79532977d5113987b672",
      "fractional_meta_model": "sema:FractionalMetaModel#mh:SHA-256:b25a96009ba8797d2c4a8673cebfe38ebb0326d237a3669a2a2d7f56aeb5e2c2"
    }
  },
  "sema_layer": "Mind",
  "sema_category": "Strategy",
  "used_by": {
    "references": {
      "FractionalDelivery": "sema:FractionalDelivery#mh:SHA-256:fe1c10ac39652798ee9b2edd66406f9b1857f125b220f962d90fe9934cdccca7"
    }
  }
}