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

View full lesson: http://ed.ted.com/lessons/how-inventions-change-history-for-better-and-for-worse-kenneth-c-davisInvented 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.Lesson by Kenneth C. Davis, animation by Sunni Brown. Learn more about your ad choices. Visit megaphone.fm/adchoices