Modern Western medicine was initially introduced to Japan through German medicine. When coming up with diagnoses of illnesses and making decisions on treatment methods, etc., German medicine taught us to take all the related factors into consideration and deepen our thinking through the process of accumulating well-grounded facts.
This is called Gedankengang in German, which is not exclusively a medical term but means “a series of thoughts” that follows such a path and accumulates well-grounded facts in any situation.