Werner passes up a biscuit. Frederick whispers: “Do you know about them? They’re really rare. Big as gliders. This one was probably a young male looking for new territory. He was in one of the poplar trees beside the parade ground.” “Oh,” says Werner. Greek letters move across the undersides of his eyelids: isosceles triangles, betas, sine curves. He sees himself in a white coat, striding past machines.

