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A 5G revolution is coming, and we may get left behind : U.S. shouldn't count on telecoms to build fiber networks

In late 2017, Susan Crawford was visiting Seoul, South Korea, about six months before it hosted the 2018 Winter Olympics.

Although she's an expert in telecommunications policy, Crawford was stunned at what she witnessed in South Korea, which she describes as "the most wired nation on the planet" -- flawless cellphone coverage even in rural areas, real-time data transmission, driverless buses using the latest communications technology to smoothly avoid pedestrians and evade obstructions.

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