What subject do you like best, English, math or physics?
你最喜欢什么科目，英语、数学还是物理？
Languages aren't the formulas in math or physics; they are just such tools to be used for communication by people.
语言不是数学公式，也不是物理公式，而是人们约定俗成，用来交际的玩意儿。
And so this is not like a math problem set or a physics problem set. Or, like a high school physics lab, where we all know what the answer should be, and you could fake your lab results anyway.
或是物理问题集合,又或者是高中的物理实验室，我们对这些问题都有确切的答案，或者你可以把你的实验结果改成正确的，有些事情是不能明确界定的。
And so this is not like a math problem set or a physics problem set. Or, like a high school physics lab, where we all know what the answer should be, and you could fake your lab results anyway.
或是物理问题集合,又或者是高中的物理实验室，我们对这些问题都有确切的答案，或者你可以把你的实验结果改成正确的，有些事情是不能明确界定的。
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