For decades, many of the most profound human innovations have demanded an inhuman precision. From contours that reduce a car's drag to the invisibly tiny features on a silicon chip, today's technological wonders would be impossible to fabricate using eyes and hands alone. Manufacturer John T. Parsons helped boost human production ability as a pioneer in computer-aided manufacturing. By translating machine motions into a set of numbers, Parsons taught machines to build machines.

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