Tonight, we will continue to discuss how to solve the undecidable problem of intelligent life. Why do Escher's paintings have strange circles? Why does Bach's fugue present a dilemma when heard from both the whole and a particular voice? 3. How to complete bootstrapping from machine language to assembly language and then to compiled language, interpreted language? 4. How do miners in Satoshi Nakamoto's Bitcoin solve whether they are the longest chain? Answer: How can a self recursive intuition system iterate into a meaningful system with intelligent vitality. Introduce equal individual self observation and scrutiny.