When I did see Susan Calvin again, it was at the door of her office. Her papers were being moved out. She said, 'How is your work going, young man? "Fine," said. "Would you look over it? I don't want to be inaccurate. She seemed cheerful. "I suppose so. Shall we go to the directors' dining room for coffee?' When we were sitting down, I asked Dr Calvin about the robots working on the development of atomic engines for space travel on the asteroids. "Space stations are now out of date, and robot mining is quite common. I'd like to write something about the robots' invention of the new atomic She was thoughtful. "My first experience with space travel and atomic engine development was in 2029, when a robot was lost Susan Calvin had never left Earth before. There was an emergency with the robots on the main station of the twenty-seventh group of asteroids and a special government ship brought Dr Calvin and Dr Bogert to solve the problem. Dr Calvin didn't want to leave Earth and she was unsure that it was a real emergency. During their first dinner at the station, her plain face wore an unhappy expression.