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Marie seems to have a naive idea again. When I say screwdriver, I think of some powerful technique, but it's actually a screwdriver. But the screwdriver may also have been a super-powerful special technique that helped humanity to leap forward. If you turn the screw, the world will turn. I feel like that's a good way to put it. ☆ The revived Niconico Channel "Mondo Historica's Villa" → https://ch.nicovideo.jp/mond-historica References for this episode: Witold Rybczynski (2010) Screws and Screwdrivers, translated by Akiko Kasugai, Hayakawa Publishing → https://amzn.to/4cJeyws Henry Petroski (2010) Why Do Forks Have Four Prongs?, translated by Miyuki Tadahira, Heibonsha → https://amzn.to/4e4YB4v Hermann Diels (2024) Ancient Technology, translated by Hiroshi Hirata, Chikuma Shobo → https://amzn.to/4g3Aoxk Alfred W. Crosby (2006) The History of Projectiles, translated by Chieko Ozawa, Kinokuniya Shoten → https://amzn.to/4e0r0ZJ Joseph Gies/Francis Gies (2012) "Cathedrals, Ironworks, and Waterwheels: Technology in Medieval Europe", translated by Kurihara Izumi, Kodansha → https://amzn.to/3T3ghFB twitter→ /mond_historica Sister channel: Yukkuri Mondo 2 / @mond2 ◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇ BGM, SE: Audiostock https://audiostock.jp Maps of each era: Geacron http://geacron.com/ Tool used 1: Yukkuri Movie Maker 3 https://manjubox.net/ymm3/ Tool used 2: AviUtl http://spring-fragrance.mints.ne.jp/a... AviUtl speed-up plugin https://www.nicovideo.jp/watch/sm3967... We are extremely grateful to all the other providers of free material #YukkuriCommentary #History #Commentary ◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇