There will be a small group of “What” and “How” questions that you will find yourself using in nearly every situation. Here are a few of them: What are we trying to accomplish? How is that worthwhile? What’s the core issue here? How does that affect things? What’s the biggest challenge you face? How does this fit into what the objective is?

Exactly how we collaborated mattered, and for us on the Purple project, it reduced to a basic idea: We showed demos to each other. Every major feature on the iPhone started as a demo, and for a demo to be useful to us, it had to be concrete and specific.