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The document discusses invention and some notable American inventions from 1870-1920. It defines invention as anything new or different made by people. It highlights inventions like the telephone (1876), light bulb (1879), and first car (1896) created by Bell, Edison, and Ford respectively. These inventions aimed to solve problems like traveling, connecting people, and brightening houses. The author proposes inventing "laser anthropology" to identify humans and solve the problem of distinguishing between good and bad humans, which could change people's lives for the easier.








