It's because in many of these fields (medical, dentistry etc) professionals are making decisions based on intuition and what they learned in school (which may o

It's because in many of these fields (medical, dentistry etc) professionals are making decisions based on intuition and what they learned in school (which may or may not considered accurate anymore). They should be consulting a formal decision tree based on latest research, but many doctors consider that to be insulting, much like they pushed back on check lists when they first became a thing.