To celebrate Thanksgiving with family and friends, with an abundance of food and in a house with power, is to have a great deal to be thankful for. The assault of Hurricane Sandy on New Jersey and New York has been a reminder, an all too vivid reminder, of how fragile the elaborate social and technological systems are that maintain us. Some people lost their lives as a result of that fragility. Many more people suffer daily around the world in circumstances that are fragile, or worse, all the time. As we enjoy the return of our normal life, we have plenty of reason to recommit ourselves to building a world in which everyone’s normal life is worth giving thanks for.