Maurice Bernstein writes about how making diagnoses are rarely black and white:
In fact, I think the art really trumps the science itself in most cases. Why do I say that? It is because no two patients are the same and no two same diseases present exactly the same way nor are their courses exactly the same. It is also because lab tests are rarely or ever 100% sensitive and also 100% specific. That means that at times a lab test will miss a disease or will indicate the disease is present but actually it isn’t.
