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How inventions change history (for better and for worse) - Kenneth C. Davis

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Invented in 1793, the cotton gin changed history for good and bad. By allowing one field hand to do the work of 10, it powered a new industry that brought wealth and power to the American South -- but, tragically, it also multiplied and prolonged the use of slave labor. Kenneth C. Davis lauds innovation, while warning us of unintended consequences.

Davis starts by saying, "Imagine a machine that could cut ten hours of work down to one." Describe an industry today that would benefit greatly from this kind of machine. Do you foresee any negative consequences? What are the positive implications for such an innovation?

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