인류의 기술은 왜 1,000년 뒤처졌나 — 고대 알렉산드리아 도서관 600년 흥망사

How did the Library of Alexandria disappear? This is a 30-minute world history documentary that follows, from the perspective of the history of ancient science, the story of how the knowledge gathered by humanity in an Egyptian city 2,300 years ago faded away not in a single day, but over the course of 600 years. In 240 BC, a man measured the circumference of the Earth with a single stick. The margin of error was a mere 2 percent. The place where this man worked was the Library of Alexandria. Inside that building were records stating that the Earth revolves around the Sun, a sphere of steam spinning, and stacks of scrolls said to number 700,000. However, this differs from what we have been taught. This library did not burn down in a single day. The modern consensus among scholars is that it "slowly faded out over 600 years." Caesar's wars in 48 BC, the advance of the Roman Emperor in 272 AD, the shift in the religious landscape in 391 AD, and the legend of 642 AD. Four shocks and the indifference in between slowly brought a building to its demise. This video follows the library not as a single building, but as a living organism, spanning its 600-year lifespan. It covers the dream of Ptolemy I, the library completed by his son, the rule to search ships and confiscate original scrolls, Eratosthenes who measured the Earth with a single stick, Aristarchus who left behind a heliocentric theory 1,800 years ahead of its time, Heron who invented the ancient steam engine, and finally Hypatia, the last beacon of light. At the end of the video, a question remains: Was the Middle Ages truly a "Dark Age"? In fact, it was not. The Islamic world inherited that wisdom, which blossomed in the House of Wisdom in Baghdad in the 9th century and was subsequently re-imported into Europe via Spain in the 12th century. If so, what have we lost? Today, we hold smartphones in our hands instead of sticks. How many books are contained within them? How many of them will still be there 100 years from now? This is the warning that the generation with the most records may be the first to be forgotten—this is the "Digital Dark Age." In your opinion, is what we possess knowledge, or is it the habit of passing that knowledge on to the next person? Please leave your thoughts in the comments. 📌 Timeline 0:00 The Man Who Measured the Earth with a Single Stick — Opening 0:40 Birth: The Dream of Ptolemy I 3:30 The King Who Took Every Book That Touched a Port 7:30 Eratosthenes, An Afternoon in 240 BC 11:30 Aristarchus, The Man Who Turned the Sky Upside Down 15:30 Heron’s Steam Sphere — A Preview of the Industrial Revolution 19:30 The Four Plagues — A Light Extinguished Over 600 Years 24:30 Hypatia, The Last Lamp 28:30 A 1,000-Year Void, and Today 🤖 AI Usage Guide The audio and images in this video were created using Generative AI. #LibraryOfAlexandria #HistoryOfAncientScience #WorldHistoryDocumentary #Eratosthenes #Aristarchus #Heron #Hypatia #AncientEgypt #Ptolemy #HistoricalMystery #HumanCivilization #HistoryOfKnowledge #DigitalDarkAge #HouseOfWisdom #HistoryChannel