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Hello and welcome to the intelligence from The Economist.

In London, I'm Jason Palmer.

And in New York, I'm John Fastman.

Every weekday, we provide a fresh perspective on the events shaping your world.

How often during the workday do you check your personal email, browse sports scores, or just go for a walk?

We don't mean to scare you, but thanks to increasingly popular surveillance software, your boss might soon know every slackerly detail.

And prediction is difficult, Mark Twain once wrote, particularly when it involves the future.

But that has not stopped people from trying, using crystal balls, tarot cards, and, in Brazil,

cowrie shells, an ancient yor of a practice that has grown increasingly popular.

First up, though.

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