The first rule of good question maps is that they answer a single type of question. Facing a complex problem, we face two types of questions: why and how. A why question is problem centric; it helps you to diagnose your problem, uncovering its root causes and, ultimately, enabling you to summarize your problem in a more insightful key question. In contrast, a how question is solution centric: It enables you to consider all the possible solutions to your problem.
One type of question isn’t consistently better than the other. Both are useful and, in general, you want to ask why before you ask how.
2. Good question maps go from the question to potential options
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