<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Doctors call what they do practice, isn’t that a little unnerving?
<|assistant|>
Doctors are not referring to their profession as a practice, but rather they refer to what they do as a practice. Practice in this context refers to a physician's skill and care in diagnosing and treating illness and injury.  Thus, it's somewhat reassuring when doctors refer to their practice as it suggests they are experienced and committed to providing the highest quality care.