Replacing the Mouse: No Small Gesture

For more than 40 years the mouse has been a blunt tool for communication with our computers. We grasp, we click, we awkwardly move a cursor around a screen. Then, four years ago, smartphones arrived en masse, followed by touch tablets, and the communication gap between man and machine narrowed (and very young children became savvy computer users). Touch is good: We naturally communicate with our hands, so what better human quality to translate into a stream of zeros and ones for computers to process? But touch is along a two-dimensional

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