这世上到处都是心碎的人。
The world is full of broken people.
"It is impossible to go through life without trust: that is to be imprisoned in the worst cell of all, oneself."
创新不仅仅是技术的问题；它关乎我们思维和运营方式的改变。
自然实验是理解现实世界中因果关系的强大工具。
压力很大，但我努力保持专注。