In Steven Spielberg's Minority Report, based on a short story by Philip K. Dick, murder investigations look nothing like those of today. They take place in front of large, curved computer display panels that the investigator manipulates by wearing a special pair of gloves. Images can be grabbed and dragged across the panels. With a twist of the wrist, video images zoom in or zoom out. An investigator resembles nothing so much as a symphony conductor as he stands before the display panels, thrusting his arms to grab images, his chest pumped out. All that's missing is a baton.
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