In 2000, Dave Eggers became the literary voice of his generation with the memoir A Heartbreaking Work of Staggering Genius. But in his latest work, Eggers chose to channel a very different voice. What is the What tells a fictionalized version of the real life of Valentino Achak Deng, a young man who fled the Sudanese genocide. Kurt talks with Deng and Eggers about their collaboration.