You are watching a movie with your family that is set in 1931. The lead couple saves $5,000 for a honeymoon to travel the world. Your sister says that she doesn't think that would be a very nice vacation because $5,000 won't last the couple very long if they travel through Europe. She argues that the $5,000 probably wouldn't last more than one week for the couple because she just returned from Europe last week.

Question: Does your sister's logic make sense to you? If yes, please explain why you agree with her. If not, please explain what's wrong with her logic.