![A photo illustration shows the Uber app and a black cab in London, Britain June 26, 2018. REUTERS/Simon Dawson/Illustration](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/E2GG5WL7ZFMWEWV5T5EISHTH7E.jpg?smart=true&auth=4d195e36fd03a32407c19606b9c970fe4e3004be6fd3e3c85addfdd3633f6769&width=400&height=225)
Unlike the taxi services dependent on GPS, London's black cab drivers rely only on their memory to navigate the streets. Reuters
Unlike the taxi services dependent on GPS, London's black cab drivers rely only on their memory to navigate the streets. Reuters
Exercising your brain is the best way to avoid accidents. Just ask London's black cab drivers
Olivier Oullier examines the world's toughest memory test to explain the brain's functioning