The previous sections are understanding. This section is action.
Before writing code, before picking a model, before building anything — these questions must be answered. If you can't answer them clearly, you're not ready to build. You're ready to do more problem-shaping.
This is the checklist. Use it.
1. What's the input, exactly?
Not "customer data" or "documents." Exactly what.
If you can't describe the input precisely, you don't understand the problem yet.
2. What's the output, exactly?
Not "recommendations" or "insights." Exactly what.