104. Who Cares Anyway? P.214 
One student is testing another student's common knowledge. 
A: What's the tallest building in the world? 
B: The Shanghai World Financial Center. Of course. 
A: What's the longest river in the world? 
B: In fact, there are two – the Nile and the Amazon. 
A: How do you know? Did someone have them measured? 
B: Well, yes and no. They measured the rivers, but it's hard to tell where they begin. 
A: Oh, I see. Tell me then. Who's the tallest basketball player? 
B: I don't know. 
A: Hah! It's Michael Jordan. He's the greatest. 
B: He may be the greatest, but he certainly isn't the tallest. 
A: Ok. Who cares anyway? 
B: Then stop asking me all these stupid questions.