Edison was a great inventor in human history. After only three months of formal education, he finally obtained more than 1000 invention patents. However, in his later years, Edison was no longer determined to make progress. He once said something that stunned us: "Don't give me any advice in the future, because I have already thought of any of your ideas."
1882, after the incandescent lamp was fully recognized by the market, Edison's electric company began to establish the power grid, thus starting the "power age". Edison's power company relies on direct current to transmit electricity. Soon, communication technology began to appear, but Edison never realized the value of communication. With his prestige, Edison gave speeches everywhere, spared no effort to attack alternating current, and even publicly ridiculed alternating current for the sole purpose of being an electric chair to kill people! This made Westinghouse, which developed communication technology, unable to lift its head for a while.
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But a moment is not a lifetime. Later, people who worshipped Edison were surprised to find that in the face of iron facts, alternating current was much stronger than direct current! So people became angry, and the employees and shareholders of Edison Electric Company were even more ashamed and decided to delete the word "Edison" from the company name.