TO GO WITH A STORY BY DEBORAH JACQUOT A student ponders while drawing routes on a map of London in a test centre in north London on February 28, 2013. All London Black Cab drivers are required to pass the Knowledge in order to be issued with a Hackney Carriage Licence. On average, between three and four years are needed to acquire this knowledge. A recent scientific study has shown that the area of ??the brain responsible for spatial memory, the hippocampus was significantly larger in taxi drivers. Aboard London taxis, drivers do not use GPS, they know the city by heart, preferring to rely on their memory rather than on modern technologies. AFP PHOTO/CARL COURT (Photo credit should read CARL COURT/AFP via Getty Images)
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CARL COURT / Stringer
01 March, 2013
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