I think 9/11 will, in the long run, have more of an affect on Science Fiction than Obama's election as president. There are enough flavors, writers, and approaches to science fiction that ultimately, Obama's win will have as much affect as anything as historic. Will the futures that writers prognosticate be much different than if McCain won? Maybe, but the same can be said after any election. There may be more new Utopic fiction rather than Dystopic fiction on the shelves.