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I want to flash back to a recent technology that has turned out to be mostly hot air. It is a warning about inventions that promise to change your life.

Starting about three or four years ago, America’s big phone companies and smartphone manufacturers, including Apple, wouldn’t shut up about 5G, the next generation of cellular internet networks.

“We’re only in the early innings of 5G, but already its incredible performance and speed have made a significant impact on how people can get the most out of our technology,” Apple CEO Tim Cook said in 2021.

AT&T, Verizon and other American phone companies blanketed us with commercials that bragged how 5G would make your phone faster and better and help physicians spot