“However,” Cass announced in her ringing voice, “I’d like you to look at this from another angle. Some of those people get to see children only once a year at Christmas, when our school comes to carol. And even the grown-ups they knew are mostly gone. Their parents are gone, their friends are gone, their husbands or wives gone—whole worlds gone. Even their brothers and sisters, often. They remember something that happened when they were, say, nine years old—same age as you all are now—but nobody else alive remembers it too. You don’t think that’s hard? You’ll be singing to a roomful of broken hearts, I tell you. Try thinking of that when you decide you don’t want to bother doing it.”