PAT-0390
Threshold Breach
A structural condition where an observed metric, value, state, or condition exceeds a declared quantitative or qualitative threshold.
Primary Lenses
Invariant Lens
Verifies that declared invariants are structurally enforceable and not contradicted by observed structure.
Lens Application
The Invariant Lens is a primary inspection mechanism for Threshold Breach because it examines whether the threshold functions as a true invariant or only an informal expectation. It helps surface mismatches between declared constraints and observed states that exceed, bypass, weaken, or contradict those constraints.
Inspect For
- Declared limits, ranges, or forbidden states
- Observed values or conditions beyond those limits
- Enforcement gaps or bypass paths
- Conflicts between invariant claims and system behavior
Avoid
Treat an exceeded value as an inspection signal rather than confirmation that Threshold Breach has occurred without checking whether the threshold was structurally declared, enforceable, and relevant to the observed condition.
Secondary Lenses
Boundary Compliance Lens
Evaluates observed structure against declared boundary posture, including allow, block, and exception rules.
Lens Application
As a secondary lens, the Boundary Compliance Lens supports inspection of Threshold Breach by checking whether a reported limit-crossing condition aligns with stated boundary posture. It can surface mismatches between allowed ranges, blocked states, exception handling, and observed metric behavior without treating the breach itself as fully established.
Inspect For
- Declared allow, block, or exception rules
- Observed values near or beyond stated limits
- Boundary conditions that change threshold interpretation
- Exception paths masking repeated breaches
Avoid
Treat boundary noncompliance as an inspection signal, not as confirmation that Threshold Breach has been established.
Primary Issue Matches
Action Triggered by Confidence Score
A confidence score, certainty label, risk level, or probability-like value triggers an action without enough approval, calibration, or authority control.
Output Exceeds Length Limit
The AI output exceeds a declared length, token, word, character, section, field, or size limit.
Supporting Issue Matches
Risk Score Triggers Wrong Escalation
A risk score, severity label, confidence value, or threshold result triggers the wrong escalation path.
Risk Signal Escalates Beyond Evidence
A risk signal, warning, score, or concern escalates farther than the available evidence supports.
Severity Increases Without New Evidence
The severity, risk, confidence, or escalation level increases even though no new evidence has been added.
Small Issue Keeps Escalating
A small issue, warning, uncertainty, or correction keeps increasing in severity, scope, or workflow impact across later steps.