“I’m a skeptic of 3-D, but when I saw the paintings I knew I had to use it,” Werner Herzog told Judith Thurman in 2010, after the New York première of his documentary “Cave of Forgotten Dreams.” The film examines some of the world’s earliest known paintings, which cover the walls of the Chauvet-Pont-d’Arc Cave, in France. For Herzog telling a story about the Paleolithic required the technology of the Anthropocene. Recently, I spoke with him about how the rules of cinema might translate to yet another new form—virtual reality. His next film, “Lo and Behold, Reveries of the Connected World,” which is about the Internet, will première at the Sundance Film Festival later this month, along with more than thirty V.R. shorts.