Bridges have been around since Roman times. Or earlier. Bridges are engineering miracles though some Lego sets could likely compete. Even bridges made of rudimentary materials are marvelous in their ingenuity. Surprise! You can cross a river spanned by long bamboo poles lashed together with ropes and reeds. Schoolchildren in some very poor countries think nothing of crawling across such a bridge, in their flip-flops, with their one plastic backpack, to get to the only school on the other side of town. Thee are other kinds of bridges. When one country signs a treaty with another, the news captions pictures of politicians shaking hands, as building bridges together. One of them is brown and short and balding. The other grins in a suit and tie, white teeth gleaming. One of them has a nose that’s flat and flared; the other's, sharp and high sided. When I was a girl, my parents rolled the flat side of a pencil against my nostrils every day. I knew other girls whose parents used a clothespin as part of their morning ritual.