The task force adds, "This dimension has been placed first in the PDM system because of the accumulating evidence that symptoms or problems cannot be understood, assessed, or treated in the absence of an understanding of the mental life of the person who has the symptoms". In other words, a list of symptoms characteristic of a diagnosis does not adequately inform a clinician how to understand and treat the symptoms without proper context. By analogy, if a patient went to her physician complaining of watering eyes and a runny nose, the symptoms alone do not indicate the appropriate treatment. Her symptoms could be a function of seasonal allergies, a bacterial sinus infection, the common cold, or she may have just come from her grandmother's funeral. The doctor might treat allergies with an antihisamine, the sinus infection with antibiotics, the cold with zinc, and give her patient a Kleenex tissue after the funeral. All four conditions may have very similar symptoms; all four condition are treated very differently.