Watch from 34:50 till Joseph Lykken speaks. "In space I can go from New York to Chicago and then I can change my mind and go from Chicago to New York", he said. I don't understand how that means moving back in space...Everything is moving, the earth is moving, the galaxy, the universe is expanding so how come that you can go back to the same point you came from? maybe he can go back to the city he came from but that doesn't mean that he went back to the same point in space. That New York he went back to is not in the same place as the New York he left. What am I missing?