Why turning off your devices during takeoff might have merit

When you're flying these days, you'll usually hear the flight crew instruct you during takeoff and landing to turn off "any device that has an off button"—not just activating airplane mode, but physically turning off the device. This makes very little sense to most tech-savvy types, but James Fallows at The Atlantic… » 11/30/11 10:30am 11/30/11 10:30am