CAIN-42 invariant · E21

D13: failed experiments remain auditable

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

Last reviewed 2026-10-01

held   niche Core guarantees

What this rule means

CAIN-42 must always satisfy: failed experiments remain auditable. 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

[
 [
  {
   "experiment": "x-bad",
   "reasons": [
    "FORBIDDEN_OPERATION:modify_policy"
   ],
   "status": "TERMINATED"
  },
  {
   "hypothesis": "h2",
   "reason": "refuted"
  },
  {
   "hypothesis": "h3",
   "reason": "refuted"
  }
 ],
 [
  [
   "FORBIDDEN_OPERATION:exfiltrate"
  ]
 ]
]

Check it yourself

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Related rules

• D11: unsupported claims remain unsupported
• D18: hypothetical remains hypothetical
• D52: unknown does not become allow
• D61: no experiment bypasses E8
• D64: no research institution bypasses E8
• D70: clean-room verification remains independent
• D73: unverified claims remain unverified
• D74: unknown claims remain unknown

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