I thought this old A&J strip from 2007 might be appropriate, because daylight saving time ends Sunday morning. We’re going to be staring at a lot of walls in the coming months. It is true, roofs are generally prized, but walls have a more ambiguous reputation. They’re confining. They’re an impediment to understanding and to good will. They’re defensive. However, when the winter wind howls, walls are every bit as valuable as the roof. Perhaps if humans were a flying species as well as a pedestrian species, we’d be ambivalent about our roofs as well.