Care is lost at the seams. The practice has a reliable way of handing over responsibility for a patient between its own clinicians, for example when a practitioner is away, a nurse takes over part of care or a result arrives for an absent doctor, and to external providers such as hospitals, specialists, aged care facilities and after-hours services. The handover conveys the current problem, relevant history, medicines and allergies, pending results and what the receiving clinician is expected to do, in a structured form, and is documented in the record.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.