There are dedicated futurists who feel very seriously that they are extrapolating a future history. My position is that you can’t do that without having the present to stand on. Nobody can know the real future. And novels set in imaginary futures are necessarily about the moment in which they are written. As soon as a work is complete, it will begin to acquire a patina of anachronism. I know that from the moment I add the final period, the text is moving steadily forward into the real future.