In recent decades, the world has invested hundreds of billions of dollars in technology infrastructure—PCs, cell phones, tablets, printers, robots, smart devices of many kinds, and a vast networking system to link them all. The aim has been to increase productivity and efficiency. Yet what, exactly, do we have to show for it? Nobel Prize–winning economist Robert Solow once quipped, “You can see the computer age everywhere but in the productivity statistics.” However, from the mid-1990s to 2004, the PC Revolution did help to reignite once-stagnant productivity growth. But other than this too
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