IMAX, 3D glasses, VHS, technicolor\u2026 technology has continually reshaped Hollywood. But perhaps the biggest, most important change happened early in the industry\u2019s history: the transition from silent films to talkies. Marc Wanamaker, a longtime Hollywood historian and consultant on films like \u201cLa La Land,\u201d walks us through what happened, and how it forever transformed the silver screen.