The doctor or nurse always knows or is right. When they are reassured that it is their opinion I want, they will answer. The degree of health or illness that the system experiences is an inevitable dimension of a person's life. The Roman Catholic Church, with it's fatalistic view of Human Life may have influenced Roy. Currently, Roy defines Health as a process of becoming an integrated and whole person and a process of being.
Health is the goal of the person's behaviour and the person's ability to be an adaptive organism.
Adaptation is a process of responding positively to environmental changes. The person encounters adaptation problems in a changing environment especially in situations of health and illness. This follows the totality paradigm. Unhealthy or healthy as seen by the medical model is another example of totality or mechanistic paradigms. My view of health is not based as firmly on the medical model or is as fatalistic as Roy's.