I've wandered into an alternative universe, and I'm trying to decide if I want to stay. The setting is the lovely, old-fashioned library of the General Society of Mechanics and Tradesmen, in midtown Manhattan. The event is a gathering called "SPLAT! A Graphic Novel Symposium." I'm here because the organizers have promised to lay out, in the course of a single day, "Everything You Ever Wanted to Know About Graphic Novels."