Two roads diverged in a wood, and I– I took the one less traveled by, and that has made all the difference.
–Robert Frost, The Road Not Taken
As those in residency training contemplate the possibility of entering subspecialty training, one wonders if they might consider the musings of Robert Frost. Could he have been foreshadowing the dilemma facing those currently making career decisions, decisions that balance on murky understandings of which roads (subspecialties) are more, or less, heavily traveled? In this issue of the ARCHIVES, Mayer and Skinner,1 in a comprehensive review of the literature, attempt to help all those interested in workforce issues to understand what is known about the adequacy and distribution of the pediatric subspecialty workforce here in the United States. Despite the attempt, we are left with few new understandings. Why?