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Technophobes may take solace in the fact that they retain ultimate control over their electronic servants so long as they control the power switch. Power is, of course, the sine qua non of computing, but personal computers haven’t done an especially good job of managing it until quite recently.-Technophobes may take solace in the fact that they retain ultimate control over their electronic servants so long as they control the power switch. Power is, of course, the sine qua non of computing, but personal computers haven’t done an especially good job of managing it until quite recently.