The car maker provides a list of parts from which your care is made up. Their condition is defined as state of the machine. You might ask the car mechanic to replace the damaged parts and bring the car back to its undamaged state, which is defined here as repair . Yet repair may not be enough for restoring car performance. Fine-tuning is also required.
Performance is viewed here as car health .
A meaningful agreement ought to specify what would be the expected state and health of your machine after treatment. Upon leaving the factory, car health is at its best, and with time it deteriorates. Unfortunately not, since patient's state and health are not defined. I will follow that system of regimen which, according to my ability and judgment, I consider for the benefit of my patients , and abstain from whatever is deleterious and mischievous. I will give no deadly medicine to anyone. . .