大自然往往隐藏于幕后。

Rule of 7 in research. You can find out anything if you are willing to go seven levels. If the first source you ask doesn’t know， ask them who you should ask next， and so on down the line. If you are willing to go to the 7th source， you’ll almost always get your answer.

教孩子们编程是违背现代教育原则的。制定计划，在组织思想时遵守纪律，专注于细节和学习自我批评有什么乐趣？