Wikipedia: Thomas Alva Edison
“In school, the young Edison’s mind often wandered, and his teacher, the Reverend Engle, was overheard calling him “addled”. This ended Edison’s three months of official schooling.
Edison is the fourth most prolific inventor in history, holding 1,093 US patents in his name, as well as many patents in the United Kingdom, France, and Germany. He is credited with numerous inventions that contributed to mass communication and, in particular, telecommunications. These included a stock ticker, a mechanical vote recorder, a battery for an electric car, electrical power, recorded music and motion pictures.”
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