The purpose of postgraduate, or continuation, education is to keep the practicing general physician or specialist up-to-date. Its aim should be to stimulate the physician to such an extent that he continues to be a student of medicine throughout his professional life. Postgraduate education should not be confused with graduate education or residency training, through which a physician is trained to become a specialist in a given field of medical practice.
The rapid progress in all branches of medical science makes it essential that both general physicians and specialists constantly strive to keep informed about new medical knowledge and techniques. When one considers how quickly a physician's knowledge becomes outdated, one is impressed with the importance of this phase of medical education. It is encouraging, and yet frightening, to realize the amount of new information and the many changing ideas that can be brought forward in such a short period
G. N. Aagaard. SOME FUNDAMENTALS OF POSTGRADUATE EDUCATION FOR THE PHYSICIAN. JAMA. 1952;149(5):420–422. doi:10.1001/jama.1952.02930220010004