medicine has been relatively understanda understandardized. mission critical steps in the surgery, having blood available, antibiotics given on time, confirming they have been done. allowing them to break down barriers so anybody can raise a concern, the surgeon, the nurse, the anesthesiologist. to make sure the patient gets a safe operation. >> i read about this in your book as well. you want to empower everyone in the hospital. i like to think i listen to everybody. if a nurse says you forgot to wash your hands, i would listen. in your researching and reporting, are people likely to listen? >> some doctors say it's not always the case. when a nurse says something or a junior level doctor says something, the head doctors don't listen. that's sometimes when mistakes happen. peter and i talked a lot about that. >> i hope that culture changes. that doctor she's describing is not me. you are right. hopefully that culture does change. doctor, at the end of the day, there's a lot of people watching who say look, how do i protect myself? how do i pr