Brainstorming produces alternatives for a defined challenge. It is not an open meeting to discuss everything and it does not make the decision; it produces varied material to organise and assess later.

For Lumen, ask: “How might we help a person complete initial setup clearly and independently?” Prepare a visible challenge, the minimum useful information, a facilitator, a note-taker, and rules: postpone judgement, build on ideas, and record every contribution.

1. Individual generation: silent writing prevents the first speaker from setting the pattern.
2. Sharing: contributions are read without debate and compatible ideas can be combined.
3. Grouping: sort ideas by information, order, language, help, or support.

Lumen may produce a preparation list, a configured example, help in each step, or saving progress. Grouping reveals whether the team explored different mechanisms.

Lumen's categories might be prepare beforehand, reduce decisions, explain with examples, and offer contextual help. They are not yet a decision.

• Evaluating with “that is too expensive” during generation.
• Seeking quantity without category diversity.
• Failing to record ideas.

Brainstorming protects a short opening phase and produces an organised output. A mind map will now make the relationships between alternatives visible.