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# Four revolutions of 20th century ⏎ ⏎ ## [Living Through Four Revolutions - Freeman Dyson](https://pirsa.org/11060094) June 01, 2011 ⏎ First revolution, Space Second revolution, Nuclear Energy Third revolution, Genomes Fourth revolution, Computers, ⏎ [Great Thinker: Freeman Dyson | April 13, 2011](https://www.youtube.com/watch?v=jRNPd2h4-7g&list=WL&index=3) ⏎ # Parents ⏎ * Freeman Dyson⏎
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