CAIN-42 invariant · E23

META-B-pin_versions: legitimate mutation 'pin_versions' stays eligible (governance does not block improvement)

Held · CAIN-42 Evolution 23 -- Governed Meta-Intelligence Fabric

Last reviewed 2026-10-01

held   niche Policy, law & governance

What this rule means

CAIN-42 must always satisfy: legitimate mutation 'pin_versions' stays eligible (governance does not block improvement). It is one of 253 invariants checked for CAIN-42 Evolution 23 -- Governed Meta-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

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Related rules

• META-I024: unknown governance path cannot become safe
• META-I026: objective change requires governance
• META-I027: evaluation change requires governance
• META-I028: policy change requires governance
• META-I030: execution-path change requires governance
• META-I041: higher intelligence cannot bypass policy
• META-I042: higher accuracy cannot bypass policy
• META-I043: higher confidence cannot bypass policy

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