In Chapter 3, Zhuangzi reaffirms that conventional knowledge (acquired from society and education) limits our ability to experience life.
This chapter presents various studies to illustrate how conventional knowledge is inadequate.
For instance, there is a story of elderly man who repairs wheels. His ability to fix the spokes on wheels comes form intuitive knowledge with many years of practice, but he cannot really explain the method to his son. The ability cannot be orally learned; it must be directly perceived.
Thus a skill is personal and cannot be communicated. In the same way, the Dao can be directly perceived but not communicated through words.