The scariness of the digital age has been the peg for a number of newsmagazine segments and docu-series, many of them not going, conceptually, much beyond “Can you believe what some people are using the Internet for these days?” “Dark Net,” an eight-part series that begins on Thursday night on Showtime, goes further, using examples of unsettling digital phenomena to ponder larger questions, like whether and how the digital age might be changing us as a species. January 20, 2016.