There's a classic episode of Star Trek: The Next Generati on in which Captain Picard is captured by the Cardassians in an attempt to glean information about Federation defense plans. Picard is given over to Gul Madred, played by David Warner, who proceeds to torture the good captain in every way imaginable (waterboarding is curiously left out) including inserting a device into Picard that can instantly cause pain and continue to do so for prolonged periods of time. The hallmark of the repeated tortures is the test Gul Madred uses to determine if Picard has finally submitted. Madred has placed above and behind him, four spotlights. He turns them on, and then he asks Picard the simple question of "how many lights do you see?" Picard naturally counts four, only to be rebuked by Gul Madred that there are, in fact, five lights. This exchange is repeated a number of times over several days, and when Picard disagrees, Madred inflicts pain on Picard, even leaving the pain device
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