For many of us, GPS has been a game changer - a tap, a voice, a turn-by-turn path, will get you there. But there is something special about a physical map that the GPS in your car or phone just can’t ...

It is a scene that feels straight out of fiction, the jumping-off point for a fable. In the bowels of a building at a London university, a curious professor opens a turquoise door that reads “Map Room ...