Doctors should concentrate more on how to help people and less on how to diagnose them.
Alzheimer’s wins every time.
Same for prion based diseases.
Treatment and cures both rely on understanding the underlying mechanisms.
It’s amazingly complex, that’s why it’s practicing medicine.
It is hard to treat someone if you don’t know what you are treating. A classic was ulcer disease. For years it was thought to be the result of too much acid. Even the most compassionate antacids did little to help. Turns out it is an infection, treatable with antibiotics.