Sleep deprivation results in hallucinations, waking dreams, incoherency, psychosis and paranoia. It is useful in getting people to sign political statements that they are enemies of the state. It is not useful in getting reliable, timely information. It has been used in Soviet Gulags, Latin American dictatorships and Chinese prisons, nearly always in connection with breaking the will of political prisoners. Using this technique, the name and location you get might end up being Peter Pan, third star from left and sail on til morning.
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