Imagine that the novelist -- his name here is Eugene Pota -- realizes that the days are dwindling and he needs to come up with one more novel. But what should he write? That first novel, the one that launched him, the one that made him into the cultural icon he seems fated to remain, has become a touchstone for his life, and his life since has pretty much been a critical failure. And now, when he is faced with the compulsion to write one more novel, to take a stab at the even bigger one, what should it be? Portrait of an Artist, as an