"You don't have to study all the counterfeit money to recognize the real thing. Just study the real dollar bill and you won't HAVE to study the others."
OK, then what happens if someone handed the person a Canadian or Australia dollar bill? What would they say about those? Each is just as legitimate as the US dollar.
Also, this "counterfeit money" illustration is not something the JWs made up on their own, it is used by other Christians as well. I have heard it told a few times over the air on Christian radio programs.
--VM44