The other day I was hanging out with some people at Dragon Forum and we ended up doing an impromptu thought experiment:
Finish the sentence "Our kids will say 'I can't believe your generation used to..."
My answer was "I can't believe your generation used to... manually map metadata to the real-world by looking down at a phone and up at the world over and over"
And now this: Link
cc: Robert Scoble h/t Mark Lamb