Rural north-central Minnesota, like rural communities throughout much of the United States, has experienced the gradual departure of young people toward cities and suburbs, the consolidation of agricultural operations, and the slow shrinking of the social infrastructure — the Legion dances, the local institutions — that gave places like Fosston and Lengby their character in Jean Hilliard’s youth.

The medicine of hypothermia has advanced dramatically.

ECMO, which can keep a patient alive during rewarming from the most profound degrees of hypothermia, is available in major trauma centers and has saved patients who would have died under the protocols of 1980.

The understanding of cold-related illness — from the mild hypothermia of an ill-equipped hiker to the profound metabolic arrest of a patient like Jean Hilliard — has deepened considerably.

Jean Hilliard has lived forty-plus years with the knowledge of what happened to her, and without the memory of the central event.