Orwell had a daunting task: creating a future nearly half a century away from the time period in which he was writing. This future had to be its own complex, independent society, but it also had to be the natural end result of the totalitarianism Orwell witnessed in the communist and socialist regimes of World War II. That's part of the horror of 1984: this future is a recognizable one, even in the 21st century. It's easy to see how those in control can, through manipulation and propaganda, maintain that control simply for the sake of sating their own power hunger. It's easy to say "no one could ever tell me what to think or what to do," but the Party's use of Big Brother, the Thought Police, the Two-Minute Hate, and Doublethink make it easy to see how a person's ability to think independently and discern fiction from reality can be eroded when there is no touchstone to fact. Revising and rewriting the past to make certain that Big Brother and the Party are always correct has effectively eliminated historical accuracy. How can one think and reason in a society where everything is a fabrication?