Brain surgery is precise and painstaking – straying a millimetre the wrong way could kill a patient instantly. Avoiding damaging the pituitary gland, the size of a grape, at the centre of the brain, is critical. It controls all the body’s hormones and any problems with it can cause blindness. Brain surgery using artificial intelligence could be possible within two years, making it safer and more effective, the new AI system has analysed more than 200 videos of this type of pituitary surgery, reaching, in 10 months, a level of experience it would take a surgeon 10 years to gain. Can you trust a robot operating the most delicate part of the boy called brain ?