Shoot for the moon

Tonight's supper conversation:

Chad: I hope one of our kids is a dentist. That seems like a good job. Sam, what do you want to be when you grow up?
Sam: I want to be a builder. You know, because I really like legos and building stuff.
Chad: Ok, that's good. You can be a contractor. Grace, what do you want to be?
Grace: A veterinarian.
Chad: You really like animals, don't you? Claire, what do you want to be when you grow up?
Claire: Four