The unexamined life, they say, is not worth living. And soon the unexamined life may be impossible in the era of Google Glass and sensor-embedded wearable devices. As I’ve blogged here before, we are being cast headlong into an ‘age of context’ – the blogger Robert Scoble’s phrase – where sensor technology will be able to generate data on every physical object, animate or inanimate, in the ‘Internet of Things’.