 The hippocampus is the area of the brain used for spatial memory and navigation, and is generally larger in taxi drivers than in the general population.A humorous 1979 television film about this learning experience, called "The Knowledge", was written by Jack Rosenthal for Euston Films, and was in 2000 voted number 83 in a list of the 100 Greatest British Television Programmes compiled by the British Film Institute.In the "Up Series" documentary films, Tony Walker is seen on his motor scooter learning "The Knowledge" before becoming a cab driver.