Confucious said that real knowledge is knowing the extent of one's ignorance.Aristotle and Socrates said the same thing.Is it a skill that can be taught or learned? It probably can, if you have enough of a stake riding on the outcome...

对来自学生的批评应该本着友好的精神来接受，学习材料的积累不应该扼杀学生的独立性。

理解是所有智慧的基础。

The web is a tool for communicating with the rest of humanity.