The move from scarcity thinking to abundance thinking, from zero-sum competition to one-hundred-sum collaboration, is not just a “nice” or “moral” idea. In the twenty-first century, it's plain good sense. Scarcity says, “I'm going to keep all my ideas to myself and sell more than anyone else.” Abundance says, “By mentoring, coaching, and sharing all our best ideas, we're going to create a powerful tide that raises all our ships-and we'll all sell more as a result".