The humanities-trained should feel the inside of a dried-out, rough leather glove and to get cold enough to be truly concerned about frostbite. I want the soft scientists to taste copper caused by exercise-induced pulmonary hemorrhage, and to sincerely wonder whether they might have pushed the boat out too far. All of us can learn much by hiking beyond the reach of the cell towers to confront wild nature and the imagined security of dialing 911. Some will die when their batteries do but those who can navigate by map and compass or landmarks and stars will experience true personal autonomy; its flavor unforgettable once you’ve tasted it.