The advent of wearable computers was one of Ray Kurzweil’s early predictions about the ever nearing Singularity, the moment when computer intelligence will surpass human intelligence and slowly slip out of our control.

At the time he said it, the prediction was as strange sounding as the idea we might all one day be wearing phone booths, and yet both have come to pass in their own ways, though in doing so both have revealed arcane inflexibility in how we used to think about computers and phone booths.

With smartphones, the world is your phone booth, and with portable, wearable computers it becomes your office and entertainment center. […]