Use when
- A user's AI request has missing object, audience, timeframe, source, workspace, permission, output-depth, or action-target boundaries.
- The system can detect likely scope choices and explain how each choice changes the answer, plan, retrieval, or action.
- Proceeding without clarification would create irrelevant output, hidden assumptions, privacy risk, broad side effects, or unsafe automation.
- The product can preserve the original request and resume after the user answers.