Novelists Creating Novelists

Be it Christie or King, Updike or Roth, they've all created fictional doppelgangers. Why? "Most writers have had a literary equivalent of the actors’ experience of self-division: the sense that their writing comes from someone or something separate. It’s perhaps significant that many of the writers mentioned here are torrentially productive and also publish under pseudonyms. An author’s fictional portrayals of authors often draw on this hidden twin..."