Chapter 89 <she is my sister>

As soon as the train stopped at the station, an old man in his sixties and a girl in his eighteenth or nineteen got on the train one after the other. Comrade, is this seat occupied?The old man said kindly to a young man. someone.The boy answered impatiently.The old man had no choice but to stand aside. At this time, the girl behind the old man came over.When the young man saw it, he quickly pointed to the empty seat beside him, and said to the girl with a smile: "This is free, please sit down." When the old man saw it, he said angrily: Didn't you just say there was someone?

Is there someone? She is my sister. When the old man heard this, he became even angrier, and said: What did you say?She is my daughter, when did I raise a son like you? The young man's argument is that there is someone sitting in this empty seat, and his argument is that the girl who just came over is my sister.The argument proves the thesis, but it turns out that the argument is false.So, the lad committed the sophistry error of deliberately using false arguments.The old man did not directly point out that the young man told a lie, but cleverly applied the reductio ad absurdum: If my daughter is your (pro)sister, then you are my son. When did I raise a son like you?The old man's rebuttal was witty, humorous, and logical, which made the other party unable to argue except ashamed.