The Ancient Skill We Forgot | How They Navigated Without GPS

For most of human history, people crossed oceans, deserts, and entire continents using nothing but memory, the stars, and natural signs, with zero instruments. This video looks at traditional Pacific wayfinding, Viking sunstone navigation, and desert caravan routes, then compares it to what recent neuroscience shows is happening to the human brain's own built-in navigation system now that GPS does that job for us. Research & Resources referenced in this video: The 1976 Hokulea voyage from Hawaii to Tahiti, led by master navigator Mau Piailug, and the Polynesian Voyaging Society's continued work under navigator Nainoa Thompson: https://www.hokulea.com Research on Viking "sunstone" polarized-light navigation (Royal Society Open Science / Proceedings of the Royal Society A simulations): https://www.science.org/content/article/vi... Dahmani, L. & Bohbot, V.D. (2020), "Habitual use of GPS negatively impacts spatial memory during self-guided navigation," Scientific Reports: https://www.nature.com/articles/s41598-020... McGill University summary of Dr. Véronique Bohbot's research on GPS use and hippocampal function: https://www.mcgill.ca/psychiatry/channels/... This video is for general educational and informational purposes and is not medical advice.