Connor and I recently watched a billboard ad being changed. He spotted the crane pulling the old one off as we left the chiropractor. I asked him if he wanted to stay and watch how they put the new one on. We stood in the entryway for 20 minutes watching. After the crane pulls the old sign off the billboard, it lifts up the new one, rolled around a tube, like a giant roll of wrapping paper. Two workers unroll the sign along the billboard. They insert metal rods in the edges, like inserting a curtain rod in a...



