oryx and crake

science fiction allows the author to write about whatever they would like to write about. as long as the author supplies enough details about the characters and the setting so that the reader understands the situation they can write about any topic that they choose. the stories can be only a couple pages long like the story from the anthology or they can be several hundred or they can be a long running series with thousands of pages like the Star Wars series. as long as the author keeps the reader interested it can go on as long as the writer likes.