Today, Brian Lange ran 2 miles.  As his feet pounded the pavement, a slim slab of metal, plastic, and glass jostled about in his pocket, connected to two high-fidelity speakers wedged in his ear canals by a thin Teflon-coated cord.  

The slab in his pocket, actually a computer, was playing his favorite music over the speakers.  Not music that was stored on itself, but music that it was grabbing out of the air- invisible waves of data transmitted by nearby giant antenna towers.  Meanwhile, the computer was also connecting to satellites sitting in low orbit and triangulating his location on the planet to within 10 meters.  A calm American female voice spoke over the music in his ears from time to time, keeping him mindful of his pace and distance.

Anybody else notice we’re living in a sci-fi novel?