Microsoft's neural network has proven to be more accurate than doctors in diagnosing diseases, according to a study published in Science. In complex cases, the AI correctly identified the disease in 83% of the cases, while the doctors did so in 36%. The difference is also significant among patients in the emergency room: 80% versus 47%. The system itself asks clarifying questions, selects tests and checks the diagnosis again. At the same time, the tests are cheaper.