Bob made the faintest suggestion of an eye roll as if to suggest that the complexities of all that were beyond him. "I worry about sewers ," he claimed. Everyone laughed, enjoying his beleaguered tone. "Oh, I’m quite serious!" he insisted. "If you’ve ever walked down Farringdon on a rainy day, and inhaled the fragrance, you’ll know it’s all quite medieval. Because you are literally walking on the lid of a covered—"