Ben Horowitz is the cofounder and general partner of Andreessen Horowitz, a Silicon Valley-based venture capital firm that invests in entrepreneurs building the next generation of leading technology companies. The firm's investments include Airbnb, GitHub, Facebook, Pinterest, and Twitter. Previously he was cofounder and CEO of Opsware, formerly Loudcloud, which was acquired by Hewlett-Packard for $1.6 billion in 2007. Horowitz writes about his experiences and insights from his career as a computer science student, software engineer, cofounder, CEO, and investor in a blog that is read by nearly ten million people. He has also been featured in the Wall Street Journal, the New York Times, the New Yorker, Fortune, the Economist, and Bloomberg Businessweek, among others. Horowitz lives in the San Francisco Bay Area with his wife, Felicia. Henry Louis Gates, Jr., is the Alphonse Fletcher University Professor and Director of the Hutchins Center for African and African American Research at Harvard University. An award-winning filmmaker, literary scholar, journalist, cultural critic, and institution builder, Professor Gates has authored or coauthored twenty-two books and created eighteen documentary films, including Finding Your Roots. His six-part PBS documentary, The African Americans: Many Rivers to Cross, earned an Emmy Award for Outstanding Historical Program-Long Form, as well as a Peabody Award, Alfred I. duPont-Columbia University Award, and NAACP Image Award.