From the presentation of the material and opinions presented here today by my distinguished predecessors, one receives the impression that there is no unanimity of opinion on the present status and future of the internship in the present scheme of medical education. This lack of unanimity can probably be traced to the wide divergencies of opinions concerning the purposes of an internship. Others hold that it no longer serves any purpose and should be abandoned.
First of all, there are those who feel that the internship is merely a preparation for the beginning of a residency, and, as such, the internship should be a straight one rather than mixed or rotating. The proponents of this theory are, of course, men who limit their practices to a very narrow special field and who feel that, in their particular realm, a rotating or a mixed internship would be a waste
Hildebrand WB. FUTURE OF THE INTERNSHIP FROM THE STANDPOINT OF THE GENERAL PRACTITIONER. JAMA. 1955;158(13):1158–1160. doi:10.1001/jama.1955.02960130012006