The Knowledge, London’s Legendary Taxi-Driver Test, Puts Up a Fight in the Age of GPS

Actually, “challenge” isn’t quite the word for the trial a London cabby endures to gain his qualification. It has been called the hardest test, of any kind, in the world. Its rigors have been likened to those required to earn a degree in law or medicine. It is without question a unique intellectual, psychological and physical ordeal, demanding unnumbered thousands of hours of immersive study, as would-be cabbies undertake the task of committing to memory the entirety of London, and demonstrating that mastery through a progressively more difficult sequence of oral examinations — a process which, on average, takes four years to complete, and for some, much longer than that.

An exceptional piece by Jody Rosen.