Manil Suri, professor of mathematics, was recently a guest on the BBC World Service program “The Forum” to discuss “Obsessions, new and old, in literature and technology.”  Joining Suri on the show, which was hosted by Bridget Kendall, were internet analyst and cyber-sceptic Evgeny Morozo and Spanish novelist and translator Javier Marias. Suri discussed his recent novel, “The City of Devi,” in which the main character is obsessed with bringing a pomegranate to her missing husband. “She feels that having this symbol almost will somehow lead her to her husband. And in a way it does tell her something about her marriage, but in …