answer: Sandy tells Karen that Karen must decide how much money she will gamble before starting, which is the best way to prevent Karen from losing all her money. Karen wants to gamble 500 dollars. Sandy thinks Karen has a bad attitude toward gambling.
documents: #Person1#: I'm not comfortable about this, Sandy. I don't understand most of these games.
  #Person2#: That's okay. I can explain a little.
  #Person1#: I don't want to lose all my money.
  #Person2#: Don't worry. You can't lose all your money. because you won't gamble all your money.
  #Person1#: I guess you're right.
  #Person2#: Of course I'm right. I already told you the rule for Las Vegas. Remember?
  #Person1#: Yes, I remember. You must decide how much money you will gamble before you start to play.
  #Person2#: That's right. That's the best way to have control over yourself. You say to yourself. Tonight I will gamble fifty dollars. Only fifty dollars. No more. If you follow the rule, you can't lose more than fifty dollars.
  #Person1#: I know it's true, Sandy. But still some people lose control. They start to gamble, and they can't stop.
  #Person2#: But I won't let you do that. I will watch you.
  #Person1#: Okay.
  #Person2#: So how much do you want to gamble?
  #Person1#: Maybe 500 dollars.
  #Person2#: 500 dollars! That's too much! You just said you are afraid to lose your money. If you're afraid, why do you want to gamble 500 dollars?
  #Person1#: I don't want people to think I'm stingy.
  #Person2#: That is a bad attitude to have, Karen! If you think that way, Las Vegas will be really dangerous for you.