One day, we are talking about what career may be good for John.
We are talking about directions of math-relative and literature-relative. After a while,
Mom: I think a doctor is better. He can help a lots of people.
Dad: Indeed! However, we need consider John's interests and personality....
We keep discussing advantage and disadvantage of being a doctor! Suddenly,
John interrupted and said: Do you know becoming a doctor is not good?
Why? The answers draw our attention.
John: Do you know that nurse always collect money , not doctor!