A whimper — barely audible, barely articulate, but present.

The human body’s determination to maintain life even in the most extreme circumstances is not mystical.

It is the product of evolution — millions of years of selection pressure in which the organisms whose physiological systems were best at resisting death, at postponing death, at buying time for rescue or recovery, were the organisms that survived to reproduce.

The vasoconstriction that preserved Jean Hilliard’s core at the expense of her periphery was not a choice she made.

It was a program that ran automatically, a program built into her by the accumulated survival experience of every ancestor she had ever had.