Sam Duncan lay in the semi-darkness of his nursing home room performing the only two activities of which he still considered himself capable: watching and waiting. Although his eyesight was dim, he could still make out the steady brightening of the light of dawn through the window next to his bed. And although his hearing was too far gone to catch the rumble of the medicine cart, as it worked its way up the hall toward his room, he could sense that the time for his morning pills was near. He waited for the nurse to push open the door and greet him and his roommate Arthur, who was still snoring loudly in the bed next to his.

Most of the accepted measures of quality of human existence no longer affected Sam. While time, in terms of years, seemed to slip away unnoticed, the hours of the day …