I think I know how people choose what they're going to do. It's because of their hair and body. If a person has the hair and body of a nurse, then they'll become a nurse. If they have the hair and body of a fire fighter, then they'll choose to be a fire fighter. If they have the hair and body of a veterinarian, then they'll learn how to be a veterinarian.
And my favorite:
If they have the hair and body of a rock star, they'll be a rock star!
