You will hear this statement not just from physicians, but from lots of other folks engaged in scholarly work of all stripes. That’s because it is not merely true; it is a deep and universal truth that permeates all of mankind’s intellectual endeavors.
The implication of this for the practice of medicine is that a little knowledge can be very dangerous.
What do I, as a fully trained, extensively experienced primary care physician bring to the evaluation of patients who seek out my care that cannot be matched by so-called “mid-level providers” (PAs and NPs)? It is not (always) my knowledge, but rather the experience to know when I do not know something. In short, I know when to ask someone else’s opinion in consultation or referral.
I had a scary experience lately with a PA who didn’t even know what she didn’t know (and who still probably doesn’t realize it.)
The patient had been bit on the hand by a cat. I saw the injury approximately 9 hours after it had occurred. The patient had cleaned it thoroughly as soon as it had happened, and by the time I saw it, it was still clean, bleeding freely, not particularly red or swollen, and only a little painful. Still; cat bites are nasty, especially on the hands. Therefore I began treatment with oral amoxicillin-clavulanate, and told the patient to soak it in hot water several times a day.
Six hours later (after one oral dose of antibiotic) the patient called me back: the wound was now much more painful, red, swollen, and there were red streaks going from the hand all the way up to his elbow. Frankly, I was a little puzzled. He was already on antibiotics; the single dose probably hadn’t had enough time to make much of an impact. And yet the infection was clearly progressing.