The best leaders have the right questions, but turn to their employees, customers, advisors, and the crowd to mine the answers. Every business is more valuable to the degree that it does not depend on its top leader. For more on these topics, read Margaret Heffernan’s book Willful Blindness: Why We Ignore the Obvious at Our Peril and Liz Wiseman’s Multipliers: How the Best Leaders Make Everyone Smarter.