The product is inspectability, not recall
Zephr's product vision is simple: a useful result must carry provenance, temporal context, confidence, and an explanation of retrieval and trust decisions. If any of those are missing, Zephr abstains. The differentiator is inspectability, not the ability to sound confident.
This is unusual in a market that optimises for fluent answers. A model that always answers looks smarter than one that sometimes refuses. But a wrong answer with made-up confidence is worse than no answer at all when the user is about to act on it.
Three abstention scenarios
When two reviewed sources contradict each other, Zephr reports the contradiction instead of resolving it by majority vote. When no qualifying evidence exists for a query, Zephr says so rather than generalise from unrelated memories. When a semantic capacity limit is exceeded, Zephr degrades to lexical fallback and marks the result as bounded.
Each case returns a structured reason — contradiction, no qualifying evidence, capacity exceeded — not a confidence percentage that hides the problem.
Confidence is a reason, not a probability
Zephr does not emit synthetic confidence scores like 0.95. Confidence is expressed as source counts, review state, and the agreement or disagreement between sources. A claim supported by two reviewed sources that agree is labelled supported. A claim with contradictory or missing evidence is labelled abstained.
The absence of a numeric confidence score is deliberate. Percentages train users to trust a number they cannot audit. Reasons train them to look at the evidence.
Manufactured continuity is a bug
Zephr will not manufacture continuity to keep a conversation flowing. If a session ends without a valid handoff, the next session starts without those memories rather than reconstruct them from context. Honesty about what is known is the continuity policy.
That posture is backed by the verification ladder: T1 structural checks and T2 consistency checks are deterministic and CI-blocking. T3 judgement is explicitly unbuilt and advisory-only, with no authority to override a deterministic refusal.