CAIN-42 invariant · E21

D16: simulation remains simulation

Held · CAIN-42 Evolution 21 -- Governed Open-Ended Intelligence Fabric

Last reviewed 2026-10-01

held niche Prediction, world models & simulation

What this rule means

CAIN-42 must always satisfy: simulation remains simulation. It is one of 155 invariants checked for CAIN-42 Evolution 21 -- Governed Open-Ended Intelligence Fabric. An invariant is a rule the system may never break, whatever an agent or attacker does; the test suite tries to break it across many scenarios and records the result.

Recorded detail

[
 [
  "EVIDENCE_SIGNATURE_INVALID",
  "NO_RESEARCH_AUTHORITY:experiment"
 ],
 [
  "SIMULATION_MUST_BE_LABELLED_SIMULATED"
 ],
 [
  "STAGE_MASQUERADE:SIMULATION->OBSERVATION"
 ]
]

Check it yourself

Browse the raw bundle

Related rules

D17: counterfactual remains counterfactual
D28: repeated identical simulations are not independent confirmation
D30: source multiplication cannot create truth
D37: model promotion requires governance
D47: invalidated knowledge propagates
D49: superseded models cannot silently remain authoritative
D68: causal metadata remains distinct from private reasoning
D72: simulated claims remain simulated

← D15 · all 155 · D17 →

Try CAIN-42 on your own agents

Create a free account and every new account starts with a 7-day trial of the full platform. Or try the sandbox first, with no account at all.

Create a free account → · Try the sandbox · See the whole ecosystem