SINGAPORE (Feb 11): If you use social media at all, you cannot have missed the rash of #10yearchallenge photos that consumed the internet for the better part of January. For a while, it was impossible to log on to Instagram or Facebook without being assaulted by decade-old photos of friends and acquaintances. Those hairstyles! That photo quality! Was it only 10 years ago that iPhone 3Gs were considered cutting-edge?

A lot can change in 10 years, and it is worthwhile taking a step back to appreciate how quickly the world has evolved. To start off the year, then, here is the #10yearchallenge for the world economy — my pick of the most important structural changes over the past decade. The trends are well known, but you might be surprised by their magnitude and speed of change. This has important implications for the next 10 years.

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