Question: M: But remember Aunt Louise, Mom? She ate a lot and never gained a pound. What was said before this conversation?
Answer: W: I don't know how you can eat so much yet never put on any weight, son. Your father's got the same luck. I can't take a bite without calculating how many calories I am taking.

Question: W: A person has to write the code, test it to make sure it spreads properly and then release the virus. A person also designs the virus's attack phase, whether it is a silly message or destruction of a hard disk. M: So why do people do it? W: There are at least three reasons. The first is the same psychology that drives people to set fire with intention. The second reason has to do with the passion of watching things blow up. Many people have a fascination with things like explosions and car crashes. The third reason probably involves showing off rights. What was said before this conversation?
Answer: M: What do people do when they create viruses?

Question: W: Maybe there'll just be too many of them on the roads. The air will be so seriously polluted that nobody will be able to breathe. M: Exactly. People will have to rely on trains. W: Why do you say that? M: Well, we won't be able to use cars, and airports take up too much space. That leaves trains. W: Huh. So do you think there'll be more efficient train systems between cities? M: Sure. They'll enable people to travel between cities in a matter of hours. There may even be trains going under the oceans to connect the main continents. W: Under the oceans? Oh, no! I get nervous enough flying on a plane. What was said before this conversation?
Answer:
M: The traffic is becoming worse and worse. I think there'll be huge changes in the ways people use cars. New laws will be made about what kind of car you can own and when you can drive.