Sometimes it feels like Christmas is a tree to hang the months from. The rituals and traditions may remain unchanged from year to year, but the people we celebrate it with are both temporal and fragile. Maybe a sibling will leave their spouse, maybe another will have a baby; one enters as another leaves. But there are changes beyond our mere numbers. As we compare one another to the people we were twelve months previously, we can spot differences that aren’t explainable by circumstance or fortune.