—— 请按键盘 空白键 开始游戏 ——

I never buy anything unless I can give myself a good reason why I should buy it.
Digital transformation is not an option but a must.
The behavior of the whole cannot be predicted from the behavior of its parts taken separately.
我愿你快乐,即使你的快乐不再是因为我。
Natural experiments are a powerful tool for understanding causal relationships in the real world.