—— 请按键盘 空白键 开始游戏 ——

The only thing that is certain is uncertainty.
Program testing can be used to show the presence of bugs, but never to show their absence!
To create architecture is to put in order. Put what in order? Function and objects.
历史不是过去。它是我们进化出来的组织我们对过去的无知的方法。