I am someone who values knowledge, actual knowledge. I also value stories and fiction a whole lot, and that's where the fake knowledge comes in.
By the time I was writing the second book, my life had changed rather dramatically, thanks to the intervention of television, and I needed to find a way to discuss that. Otherwise the big, fake book would not be true on some level.
Creating fake facts does require a measure of haphazard research, insofar as they need to not just be possible, but also interesting.