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The Great Library of Alexandria – Dr. Roy | Museum of the Future: Lessons from the Past

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567 views60likes2:14:48DrRoyCasagrandaOriginal Release: 2026-07-21

The Great Library of Alexandria, founded by Ptolemy I Soter in 3rd century BC, was one of history's greatest intellectual institutions, housing approximately one million books and serving as a research institute that produced groundbreaking scientific discoveries including Eratosthenes' calculation of Earth's circumference, Aristarchus' heliocentric model, and Heron's steam engine; however, its destruction in 391-392 AD by Christian mobs under Archbishop Theophilus represents a catastrophic loss of accumulated human knowledge that may have delayed technological progress by centuries, as Carl Sagan estimated humanity would be 500 years ahead without this loss.