In “Super Sad True Love Story,” Gary Shteyngart’s best selling trip into the digital future, Shteyngart invents a darkly disturbing world in which we all wear electronic pendants around our necks called “apparats” which reveal everything about us to everybody. In the future, he tells us, privacy will be dead and our blazingly public lives will be broadcast by transparent ranking networks (think Klout and Peer Index on steroids).