" Well, without at least some optimism writing anything is impossible -- you have to believe that someone out there will be reading what you write. Even more so for science fiction for me -- we're thinking and writing about the future, so to a greater or lesser extent we're thinking that there will be a future to participate in, and that people will be there to tell us what we got right and what we got wrong. Even dystopian literature often trades in hope of some form -- people fighting against the dystopia, for example. There will always be specific counter-examples, but I think generally science fiction has optimism baked in. We believe in the future, even if there's a long slog between where we are now and where we will go. "

― John Scalzi