> Another HN commenter mentioned GPS being designed over a holiday. But we spent years and years in the military debugging GPS and making it functional. GPS/Na

> Another HN commenter mentioned GPS being designed over a holiday. But we spent years and years in the military debugging GPS and making it functional. GPS/Navstar also wasn't the first system: * https://en.wikipedia.org/wiki/Transit_(satellite) https://en.wikipedia.org/wiki/Transit_(satellite) * https://en.wikipedia.org/wiki/Global_Positioning_System#Predecessors https://en.wikipedia.org/wiki/Global_Positioning_System#Pred... * https://en.wikipedia.org/wiki/Satellite_navigation#History https://en.wikipedia.org/wiki/Satellite_navigation#History