In the past, Google has used teams of humans to 'read' its street address images - in essence, to render images into actionable data. But using neural network technology, the company has trained computers to extract that data automatically - and with a level of accuracy that meets or beats human operators.

We speak of 'software eating the world,' 'the Internet of Things,' and we massify 'data' by declaring it 'Big.' But these concepts remain for the most part abstract. It's hard for many of us to grasp the impact of digital technology on the 'real world' of things like rocks, homes, cars, and trees. We lack a metaphor that hits home.

As you grow older, you learn a few things. One of them is to actually take the time you've allotted for vacation.