Design the lifecycle, not only the answer
Review an AI feature across eight useful states: ready, collecting input, processing, producing output, awaiting review, completed, limited or uncertain, and failed or interrupted. This is a practical checklist, not a universal standard; combine or extend states when the actual workflow requires it.
Eight states to review
- Ready. Explain what the feature can help with and what the user needs to provide. Use an example that reflects a supported task rather than an exaggerated capability.
- Collecting input. Show which files, permissions, or context are included. Let the user correct the scope before consequential processing starts.
- Processing. Communicate that work is underway. Show trustworthy progress information where available, and offer cancellation when the workflow can support it.
- Producing output. If output appears incrementally, distinguish unfinished content from a completed result. Keep focus stable and avoid overwhelming assistive technology with repeated announcements.
- Awaiting review. Before a consequential action, summarize what will change, the target, and the available alternatives. Confirmation should describe the actual action.
- Completed. Show the result and what actually happened. Distinguish a draft from a sent message or an executed change, and provide a reference or history where useful.
- Limited or uncertain. Explain missing information or relevant limitations in terms the user can act on. Do not display an unvalidated confidence percentage as if it guarantees correctness.
- Failed or interrupted. Explain the affected work, preserve recoverable progress, and offer a specific retry, correction, or handoff. An unknown execution result needs investigation before a potentially duplicative retry.
Transitions matter as much as the screens
Draw the transitions between states and identify which are reversible. An assistant drafting text can allow rapid iteration; an agent changing external records may need a preview, explicit boundaries, and reliable recovery. Make the interface match the actual system capability.
Consider what happens when a user edits the prompt during processing, revokes a permission, navigates away, or reconnects after a timeout. These are product decisions that design and engineering need to make together.
Review checklist
- Can the user tell whether the system is preparing, working, waiting, or finished?
- Are proposed changes clearly different from changes already executed?
- Does cancellation communicate whether any partial action occurred?
- Can an uncertain result be checked without blindly repeating an external action?
- Are errors, progress, and results accessible without relying on color or animation alone?
- Does the next action match the user's actual level of control?



