The truth is you don't know what is going to happen tomorrow. Life is a crazy ride, and nothing is guaranteed.
模型的目的是足够简单以便理解和使用,但又足够复杂以捕捉系统的基本特征。
读书贵在能有疑问,有疑问方能增进对事物的了解。
The most important property of a program is whether it accomplishes the intention of its user.
"A great film is one that stays with you, that changes the way you see the world."