THE SO-CALLED "WAR GAME" or" staff exercise" has long been an accepted vehicle for the training of military staffs. (Here, one should distinguish the war game from the "field exercise" or maneuver, which is primarily for training troops and field commands, not staffs.) Lately, it has been discovered that the war game, if properly designed and played, can also be made to tell something about the...

The situation in Mexico followed a similar pattern. From 1980 to 1988, the Mexican Social Security Institute (the Instituto Mexicano de Seguro Social, or IMSS) performed fewer than 5,000 vasectomies per year. In 1989, the IMSS launched a program to open at least one no-scalpel vasectomy training center in each state. By September 1994, 44 centers had been established, 116 physicians had been tr...