It took 4 years to master ‘The Knowledge.’ AI just collapsed it in a software update

In London, becoming a licensed cab driver used to require passing an exam called “The Knowledge.” Candidates spent three to four years memorizing 25,000 streets, 100,000 landmarks and thousands of optimal routes. Neuroscience researchers at University College London found that cabbies who passed had measurably enlarged hippocampi from the cognitive load. GPS made the entire achievement irrelevant in a single software update.