Except any viewer who is actually sane and understands the difference between fiction and reality would already know that it's not our real future. It's a bloomin' TV show with actors on sets in front of cameras. Everyone knows that. So obviously it's not meant to be a literal proposal for what the future could be. It's an aspirational symbol, a representation of what a better future could look like, a model for the kind of future we can potentially build. It's not about "This event will happen on this date in exactly this way" -- it's about "This is the way human beings could live and treat each other in a better world, if we work hard enough to make such a world."