Unlike Checklist, this book focuses purely on medicine, and surgery in particular, but I found its lesson to be applicable more broadly. Specifically, he uses the field of surgery as an example of work that is difficult and uncertain but in which there are clear distinctions between worse and better performers.
Below are my notes on the book. It was really interesting to read the stories of how differently medicine is practiced throughout the world and how different lessons can carry over. I do hope that the world of medical performance becomes more transparent for patients, as he advocates in this book.