Tony Fadell from his new Build book:
And you have to hold on to that “why” even as you build the “what”—the features, the innovation, the answer to all your customers’ problems. Because the longer you work on something, the more the “what” takes over—the “why” becomes so obvious, a feeling in your gut, a part of everything you do, that you don’t even need to express it anymore. You forget how much it matters.
When you get wrapped up in the “what,” you get ahead of people. You think everyone can see what you see. But they don’t. They haven’t been working on it for weeks, months, years. So you need to pause and clearly articulate the “why” before you can convince anyone to care about the “what.”