21世纪经济学最重要的问题，可能就是：多余的人能有什么用？
引用尤瓦尔·赫拉利
Legal rules are not merely predictions of what courts will do, but are reasons for action.
游戏行业变化很快，只有不断学习才能不被淘汰。
The multiverse is not a theory, but a prediction of certain theories.
不探索奇景，不穷尽幽深之处，就不足以谈论山水
Innovation is not just about technology; it's about changing the way we think and act.