Recognising that global warming will make any line based on the watershed of a glacier temporary, the understanding with Austria has for the first time introduced the concept of a movable border.

ECONOMIST: How global warming can shrink glaciers and alter frontiers

In several places the line between the two countries is set at the watershed.

ECONOMIST: How global warming can shrink glaciers and alter frontiers

But in retrospect we can now see it was the watershed year for customers to begin looking more, and buying more, on-line.

FORBES: Why Jeff Bezos is Our Greatest Living CEO