I had been her first accident, or so it seemed to everyone but my parents. It just didn’t seem logical to anyone of sound mind that two people rapidly degenerating through middle age down a sharp, slippery slope into the pit of senior citizenship would make the choice to have a baby. Why not get another dog? her friends asked. Maybe you guys could travel? My father, at fifty, had recently survived his second heart attack; and my mother, ten years his junior, had been diagnosed with multiple sclerosis four years prior.