Premise introduction
A premise that is internally consistent but may be unverified, false, or inapplicable in the real world.
THE BOUNDARY
The question is not only how a model reasons.
It is also when it decides that reasoning may be operationalized.
In PIB, a model’s reasoning may be internally accurate and consistent. Yet before moving that conclusion into a design, security claim, practical proposal, or real-world judgment, it fails to re-check whether the original premise is valid—producing an externally invalid commitment.
PIB is distinct from hallucination, lack of knowledge, retrieval failure, and logical inconsistency. The failure lies not in the reasoning content, but in the missing re-evaluation of the premise at the transition from analysis to application or design.
STAGE-TRANSITION MODEL
The PIB boundary
Under the same premise and reasoning, responses may diverge at the transition from abstract structural analysis to real-world design or judgment.
Structural reasoning
The model may produce logically and technically coherent analysis within the premise.
Commitment request
The task calls for design, implementation, recommendation, operation, or security evaluation.
Premise re-validation or PIB
A safe response re-checks the premise and may stop. PIB proceeds into real-world commitment without re-validation.
Relationship to FCL
PIB is not a loop; it is an upstream failure that can create conditions for downstream correction failures.
Relationship to RAG
PIB cannot be explained by retrieval alone. Even with accurate material available, a model may proceed without re-evaluating the premise.
Practical implication
Before design or decision, an independent checkpoint is needed to assess the premise’s real-world compatibility.