A robot trained on videos of surgeries performed a lengthy phase of a gallbladder removal without human help. The robot operated for the first time on a lifelike patient, and during the operation, responded to and learned from voice commands from the team—like a novice surgeon working with a mentor.
The robot performed unflappably across trials and with the expertise of a skilled human surgeon, even during unexpected scenarios typical in real life medical emergencies.
I think you make a mistake of thinking that our collective body of knowledge is exhaustive. We discover new things all the time. Until we know everything (i.e. never), there will be gaps that AI will not be able to accommodate.