So much has been written on this subject that it would seem almost useless to attempt anything more. However, it is recognized by all that the perfect system has not yet been evolved and probably never will be, at least not until the human equation can be entirely eliminated. No matter what system of promotion happens to be in force at any time, there will be inequalities in its operation and feelings of personal injustice in some cases. And until human nature is changed or eliminated these conditions will continue to exist.
One Phase of the Promotion Problem
By Captain Robert Alden Dawes, U. S. Navy (Retired)