My uncle recently had surgery to remove cancer in his liver. Robotic surgery. Took forever (compared to a human surgeon) because the robot goes very slowly so as to be more precise than a human surgeon could in terms of leaving healthy cells and removing cancerous ones. With liver surgery this is very important since the hope is that the liver will regenerate and leaving as many healthy cells as possible makes this more likely and with how much they were removing from my uncle, he needed every bit of healthy tissue they could save to have a chance of survival. If his liver didn’t regenerate he’d be dead in a few weeks. It worked! His liver has regenerated and he has a second chance at life. All hail our robot surgeon overlords!