763. The man, a stranger to Bobbie, was visiting New York City for the first time. Just after ascending the subway station stairwell, he asked her which way was north. After pointing up Broadway, Bobbie said, "Now be careful where you step while you're walking. They should call our sidewalks 'poop decks,' because so many dogs use them for their business. And don't walk under electrical wires that pigeons are standing on. You never know when—." Bobbie suddenly stopped talking. The stranger looked at her, and she looked at him. He said, "When what?" She said, "Oh, I'm sorry. My personal rule is to stop talking about every 20 seconds. Over the years, I've realized that very few people listen to me for even 20 seconds." He said, "But you only talked for about ten seconds." She said, "Well, 20 seconds is actually my goal. I usually settle for ten." 5.2