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Helix separates evidence from the final decision. Labels, reason codes, confounder signals, context, exposure state, validator signals, and uncertainty signals can all contribute to a decision without becoming the decision themselves.

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Confounders are first-class

Many enterprise artifacts look sensitive but are not: tracking IDs, telemetry, GUIDs, hashes, placeholders, masked values, and test fixtures. Helix treats these convincing negatives as first-class evidence rather than edge cases.

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Uncertainty is structured

Uncertainty is not a single softmax score. Helix treats predictive confidence, disagreement, novelty, validator conflicts, and surface-quality degradation as separate signals.

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Abstention is a product behavior

A high-trust system must be allowed to say that it does not have enough evidence to decide. abstain is not a weak form of suppress; it is a separate outcome that routes the case into review rather than letting the system bluff.