The hat was a marvel, like a chastity belt or a grate over an abandoned and dangerous well. The wide curve of its bowl fit the man’s head perfectly. The thick brim jutted over his eyes, hiding everything above the horizontal plane of his vision and much to either side. It was astonishing that something intended to be worn could be fashioned of a material so ancient, so dense and pebbly and so, well, iron age. Yet the hat seemed to him the most natural thing in the world. He didn’t wear it with pride but he didn’t resent it either. It simply was. He put it on every morning. It sat on his head through breakfast with his wife and children, through the tedious search for his briefcase, the train ride to the city, the day in the office, the ride home, drinks, dinner, TV, lovemaking—three times a week—until, just before he laid his head on the pillow,…