Answers are three-valued and each use decides uncertainty

Context

An unavailable fact differs from a fact that disproves qualification.

Decision

Return eligible, ineligible or indeterminate, then apply the uncertainty policy chosen for that use.

Alternatives Considered

Collapse uncertainty into false: A missing record or outage would become an unexplained refusal.

Put the uncertainty policy on the rule: Different uses of the same rule can require different risk policies.

Consequences

Unavailable evidence produces reasons for uncertainty. Purposes provide default policies that individual uses can override. Closed uncertainty can use the rule’s member-facing message.