Tim Brown is the CEO and president of IDEO, and speaks regularly on the value of design thinking and innovation to business and design audiences around the world. He participates in the World Economic Forum at Davos, and his talk "Serious Play" can be seen on TED.com. In this interview, he reviews his career at IDEO, explores the impact of design processes (drawing and storytelling), as well as discussing his new book, Change By Design. (10.12.09)