Shirley settled into her recliner after a long day. She looked out the window and noticed an older couple struggling to move a section of old fence left in a yard and labeled “free.” Shirley grabbed her husband, and they headed out the door to help. The four of them wrestled the fence onto a dolly and pushed it up the city street and around the corner to the couple’s home—laughing all the way at the spectacle they must be...