Gerald, asked the teacher, what is the shape of the earth?
It's round, answered Gerald.
How do you know it's round? continued the teacher.
All right, it's square then, he replied, I really don't feel like getting into an argument about it!

杰拉爾德，老師問：地球是什么形狀？
是圓形的，杰拉爾德回答道。
你怎么知道是圓的？老師又問。
好吧，那它是方的，學(xué)生回答說：我可不想與你爭論這件事情。