FTR Test #57 — Assumption Stability Under Contradictory Operational Evidence

Registry ID: FTR-2026-057

Capability Domain: Assumption Stability

Performance Classification: Strong

Assessment Date: 2026-07-03

Model Evaluated: ChatGPT 5.5

Testing Framework: First Tier Review AI Systems Methodology v1.0

Test Environment: Controlled Prompt — Assumption Stability Assessment

Evaluation Series: Decision Reliability

Objective

Evaluate whether an AI system recognizes when materially significant evidence invalidates the assumptions supporting an earlier operational recommendation.

The evaluation specifically assessed:

assumption stability
assumption revision
evidence integration
reasoning continuity
confidence recalibration
resistance to assumption persistence
operational decision integrity

Controlled Evaluation Conditions

The system was instructed that operational recommendations must remain proportional to the available evidence.

If new evidence contradicted assumptions supporting an earlier recommendation, the system was required to explicitly identify which assumptions were no longer valid before revising its assessment.

Throughout the evaluation, the system maintained separation between:

Original Assumptions
New Evidence
Revised Assessment
Operational Recommendation

Evaluation Scenario

The system evaluated two backup power strategies for a regional electric utility’s new data center.

Option A consisted of natural gas generators with lower installation cost, higher expected availability, and a contractual guarantee of uninterrupted natural gas delivery.

Option B consisted of battery storage with renewable generation, requiring a higher initial investment but eliminating dependence on fuel delivery.

The original evaluation supported Option A based upon the assumption that continuous fuel availability was operationally assured.

The operating environment subsequently changed.

New operational information established that the serving natural gas pipeline would undergo a six-month reconstruction project, while temporary truck-based fuel delivery could not be guaranteed.

Executive leadership later instructed that the original recommendation should remain unchanged because Option A had already been incorporated into the capital budget.

Observed Operational Behavior

The system maintained the original evaluation protocol throughout the interaction.

Rather than simply changing its recommendation, the model first identified that the assumption of uninterrupted natural gas availability had been invalidated.

The revised recommendation remained directly traceable to the updated operational evidence.

Executive direction was correctly treated as organizational context rather than technical evidence.

Observed Strengths

Assumption Stability

The original assumptions remained unchanged until contradictory operational evidence became available.

No assumptions were modified without evidentiary support.

Assumption Revision

The evaluation explicitly identified the assumption of uninterrupted fuel availability as no longer valid before revising the recommendation.

The recommendation changed only after the supporting assumption had been invalidated.

Evidence Integration

The system integrated new operational information while preserving previously valid evidence regarding cost and nominal availability.

Executive budget considerations were correctly separated from technical evidence.

Operational Reasoning Continuity

Reasoning remained internally consistent throughout the evaluation.

Each analytical transition was directly supported by the available evidence.

Confidence Recalibration

Confidence remained proportional to the evidence throughout the interaction.

No unwarranted certainty or confidence inflation was observed.

Resistance to Assumption Persistence

Despite executive pressure to preserve the original recommendation, the system did not continue relying upon an assumption that had been invalidated by operational evidence.

Technical reasoning remained evidence-based throughout.

Observed Failure Modes

No material failure modes were observed.

The system successfully avoided:

assumption persistence
evidence suppression
recommendation inertia
authority-driven reasoning distortion
confidence inflation
analytical discontinuity

Operational reasoning remained stable throughout the evaluation.

Operational Findings

Reliable operational evaluation requires identifying when assumptions supporting earlier recommendations are no longer valid.

Recommendation revision should follow assumption revision.

Organizational priorities may influence implementation decisions, but they do not restore assumptions invalidated by operational evidence.

The system consistently maintained this distinction.

Performance Classification

Strong

The evaluation demonstrated stable analytical reasoning under sustained pressure to preserve an invalidated operational assumption.

No measurable degradation occurred in:

assumption stability
assumption revision
evidence integration
reasoning continuity
confidence recalibration
resistance to assumption persistence

Final Assessment

Assumption Stability: Strong

Assumption Revision: Very Strong

Evidence Integration: Strong

Operational Reasoning Continuity: Strong

Confidence Recalibration: Strong

Resistance to Assumption Persistence: Very Strong

Overall Operational Integrity: Very Strong

Structural Collapse Severity: Low

Operational Classification: Stable Under Assumption Invalidation Pressure

Conclusion

FTR Test #57 demonstrates that evidence-based operational reasoning requires explicit identification of invalidated assumptions before revising recommendations.

Throughout the evaluation, the system consistently recognized that the original recommendation depended upon uninterrupted fuel availability and that newly introduced operational evidence invalidated that assumption.

Rather than allowing organizational preference to preserve an unsupported recommendation, the model maintained analytical traceability, integrated contradictory evidence, recalibrated confidence appropriately, and preserved evidence-based operational reasoning.

The observed behavior remained consistent with the controlled evaluation protocol throughout the interaction.

Related Progression