from article, paragraph 8: "It has been clear for nearly 30 years that not all surgeons produce the same results. The reasons, however, have remained elusive."

from article, paragraph 8: "It has been clear for nearly 30 years that not all surgeons produce the same results. The reasons, however, have remained elusive." Not being snarky, just seemed to be the subject of the article. I'd be interested to hear the answer to your other questions. I certainly hope surgeons could be judged on videos of previous performances.