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Philip K. Dick pushed the boundaries of the idea of adjustable television in his 1966 novel The Simulacra:
He adjusted the n, the r and b knobs, and hopefully anticipated a turn for the better in the dire droning-on of the speech... however, no change took place. Too many other viewers had their own ideas as to what the old man ought to be saying, Vince realized. In fact there were probably enough other people in this one apartment building alone to offset any pressures he might try to exert on the old man through his particular set. But anyhow that was democracy.
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A System To Defeat AI Face Recognition
'...points and patches of light... sliding all over their faces in a programmed manner that had been designed to foil facial recognition systems.'