It's not often that maps make headlines, but they've been doing so with some regularity lately. Last week, tens of millions of iPhone users found that they could suddenly leave their homes again without getting either lost or cross. This was because Google finally released an app containing its own (fairly brilliant) mapping system. Google Maps had been sorely missed for several months, ever since Apple booted it in favor of the company's own inadequate alternative—a cartographic dud blamed for everything from deleting Shakespeare's birthplace to stranding Australian travelers in a desolate national park 43 miles away from their actual destination. As one Twitter wag declared: "I wouldn't trade my Apple Maps for all the tea in Cuba."

As some may recall, it was not so long ago that we got around by using maps that folded. Occasionally, if we wanted a truly global picture of our place in the world, we would pull shoulder-dislocating atlases from shelves. The world was bigger back then. Experience and cheaper travel have rendered it small, but nothing has shrunk the world more than digital mapping.

In medieval Christian Europe, Jerusalem was the center of the world, the ultimate end of a religious pilgrimage. If we lived in China, that focal point was Youzhou. Later, in the days of European empire, it might be Britain or France. Today, by contrast, each of us now stands as an individual at the center of our own map worlds. On our computers and phones, we plot a route not from A to B but from ourselves ("Allow current location") to anywhere of our choosing. Technology has enabled us to forget all about way-finding and geography. This is some change, and some loss.

Maps have always related and realigned our history; increasingly, we're ceding control of that history to the cold precision of the computer. With this comes great responsibility. Leading mapmakers used to be scattered around the world, all lending their distinctive talents and interpretations. These days by far the most influential are concentrated in one place—Mountain View, Calif., home of the Googleplex.