What is written on that guidepost ?

路标上写了什么？

At least there is one reliable guidepost to follow : learn from google 's mistakes .

至少有一个可信的路标作为参照：从谷歌（google）的错误中吸取教训。

They are both a challenge and a guidepost .

它们既是挑战也是路标。

The life does not have the guidepost , all directions decided by you .

人生没有路标，一切方向由你决定。

However the one guidepost that stuck out like a sore thumb announced " to be scientific an economic theory must make testable predictions . "

但是，一个路标就像受伤的拇指一样站出来宣布，“要具备科学性，一个经济学理论就必须经过实验证明”。