Sandra walked to dinner alone one night. She had a lovely meal at a restaurant. No one else talked to her and she sat on her own table. At the end of the meal, she asked the waitress for the bill and suddenly George, Thomas and Ben showed up to pay for the meal. They did not speak to Sandra at all and didn't feel any emotions toward her. As soon as the bill was paid, they abandoned Sandra and left with another woman. Sandra left the restaurant alone and walked back to her home.
Sandra considered this a very normal night. How can you explain what happened?