Certainly there are some medical decisions that are incorrect, no matter how they are sliced. However, I often find that it is important to understand that different people have different ways of doing things, and there frequently isn’t any good way to dismiss one way or the other as “wrong.” Approaches to medicine are sometimes just different with different doctors, which is why the patient-physician relationship is so important.
Recently, I saw a discussion on a listserv among world experts in corneal disease. Some were strongly in favor of one concentration of vancomycin and some were strongly in favor of another. In the end, I don’t think that either group was “right” or “wrong,” and we can all learn from different perspectives and discussion.