The next day, the shop is to open as usual. Everyone wants to know how they're going to save zero. They want to know if she's really the murderer. They don't know how to save her. They can't save her because of the law about robots. They'll have to go back to New York City to find out what happened. roger says there are still some suspicious points in the case, but he's going to go investigate further. He compares zero's actions to a beast that's free from its owner's chains. He says that the intelligent robot revolution nearly destroyed the world 17 years ago, but it was stopped by scientists. The law of robots, he says, is the same as the law of murder. It's the first law, it doesn't hurt a human being, it obeys the orders of humans, and it protects its own existence. The third law is that a robot has to obey the laws of nature if it wants to exist. If a robot is really a murderer, it means that the supreme law isn't going to hold up.