—— 请按键盘 空白键 开始游戏 ——

The poor often have to make more complex financial decisions than the rich.
在科学中最令人兴奋的短语,预示着新发现的,不是“我发现了!”,而是“这有点奇怪……”
The best way to learn econometrics is by doing—working with real data and real problems.