"I Don't Want to Talk About It." That was on the card Don DeLillo handed me in Athens after I crossed seven time zones to interview him back in 1979. Fortunately the card was half a joke. I remembered the occasion when reading his new novel, "Point Omega", in which a filmmaker from New York travels to the California desert to talk a writer into doing a filmed interview. In "Mao II," about another writer that people want to talk with, DeLillo has a character say, "The interviewers are writing novels." What I've noticed recently is that the novelists are writing novels about interviewers, and I'm wondering what this trend says about novelists and their readers.