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maybe we need to update those giant concrete arrows on the ground... https://en.wikipedia.org/wiki/Transcontinental_Airway_System https://en.wikipedia.org/wiki

by m463 1mo ago

maybe we need to update those giant concrete arrows on the ground... https://en.wikipedia.org/wiki/Transcontinental_Airway_System https://en.wikipedia.org/wiki/Transcontinental_Airway_System and have giant concrete QR codes

dotancohen 1mo ago
You're not far off with the QR codes. Some military hardware actually match camera input to known maps to navigate. Mostly unmanned, one-way hardware.