Surprisingly, Google (and our laziness) is the harbinger of 1984

 With our current technology, short of Brain Computer Interface, there is only one way for 1984 (the book) to come true.

That is, if people stop remembering. If they depend on the internet for everything, every piece of information. The internet can be changed in a short time. History can be altered really easily using Wikipedia. (As some of us already know).