This morning, as we drove along the back road that leads into town, we saw three children waiting for the school bus. One of them was sitting down reading a book. I thought at first he was sitting on his school bag, but he wasn’t. He was sitting on a rock. “I don’t suppose modern school bags are much good for sitting on,” I remarked to the girls. “They’re not like my old port.” Port? “When I was a girl…