As an outsider, it seems like medical science would be particularly challenging. Underlying mechanisms for many common conditions aren't known or fully understo

As an outsider, it seems like medical science would be particularly challenging. Underlying mechanisms for many common conditions aren't known or fully understood, but the collection of symptoms (syndrome) need to be treated now to improve quality of life. It would seem like this would lead to less strict and rigid systems of analysis and methodology out of necessity (working with the best information and analysis at hand, knowing that there are still many unknowns). tl;dr - everyone's probably just doing the best they can.