There are four activities that can typically reach persons at all stages of Alzheimer's disease. Being visited by a child is one of them, as young Max discovered. Others include having a visit from a pet, listening to or playing music and observing or creating artwork.
The myth about Alzheimer's is that it is a veritable death sentence. But as the filmmakers demonstrate, the creative arts can reunite even a late stage Alzheimer's sufferer with parts of his/her former self.