they is us.

"They got off the wall and stood hugging each other. The train came and they got on and found a New York Times Magazine and stood in an enclosed area between train cars with some other people. They pointed at things on each page and said 'Which would you rather have?' or 'Which would you rather be?' They pointed at a vacuum cleaner and a tree, a suitcase and a bottle of champagne, a small child and an old man. They chose the same thing each time. Sunlight came through trees passing by outside into the area where they stood. Sam noticed someone smiling at them and realized that for an amount of time he had not been aware or anything but what he and Sheila were doing."