—— 请按键盘 空白键 开始游戏 ——

You are never too old to set another goal or to dream a new dream.
The challenge is not just to collect data, but to make sense of it in ways that improve lives.
性能的关键在于优雅,而不是大量的特殊情况。
因果关系的阶梯有三个梯级:观察、行动和想象。