It is like information theory; it is noise driving out signal. But it is noise posing as signal so you do not even recognize it as noise. The intelligence agencies call it disinformation, something the Soviet Bloc relies on heavily. If you can float enough disinformation into circulation you will totally abolish everyone’s contact with reality, probably your own included.
From Philip K. Dick’s 1982 novel The Transmigration of Timothy Archer.
Biblioklept 
Yup. PKD does it again. Or did it again. Prescient and telling.
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From the blurb on A Scanner Darkly, ‘The Most Brilliant Sci-Fi Mind On Any Planet’.
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