Evidence Before Action: When AI Systems Should Decide, Ask, or Abstain
An AI system can produce a plausible answer before it has enough evidence to justify the action attached to that answer. I argue that acceptance should depend on the specific claim, the evidence supporting it, and the consequence of being wrong. This working paper proposes an evidence-to-action contract that separates candidate generation, claim validation, and action authorization. The framework applies to visual recognition, document processing, equipment identification, and information retrieval. It builds on selective prediction and confidence calibration without claiming to invent abstention. Its proposed contribution is an operational evaluation framework for claim-level evidence requirements, targeted requests for additional information, and proportionate escalation. A controlled evaluation is specified, including domain shift, incomplete inputs, and false acceptance costs. No new cross-domain experiment is reported.