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Most people think of GPS as a map, but its most consequential product is not location — it is time, delivered to Earth with nanosecond precision and consumed silently by cell towers, stock exchanges, power grids, and payment networks. A 2024 Brattle Group study put the cost of a single day without that signal in the United States at 1.6 billion dollars, rising to 58.2 billion over thirty days, and a UK government assessment reached a comparable figure of more than 1.4 billion pounds per day. Whe…
続きを読む>>One Clock in the Sky Keeps the Modern Economy Running
