You, a 78-year-old man with dementia? Genius!In a masterstroke of symbiosis, the University of San Francisco has assigned its drama students to portray the sick and dying for the benefit of the school's nursing students.It's hard to think of a more mutually beneficial setup: The nurses-to-be get the advantage of learning, early-on, how to deal with drama queens, while the actors-to-be get the heads-up on likely future necessities such as convincing a medical professional that you need hard drugs