We may then gradually improve these patterns that we share, by testing them against experience: we can determine, very simply, whether these patterns make our surroundings live, or not, by recognizing how they make us feel.
Once we have understood how to discover individual patterns that are alive, we may then make a language for ourselves for any building task we face. The structre of the language is created by the network of connections among individual patterns: and the language lives, or not, as a totality, to the degree these patterns form a whole.
Then finally from separate languages for different building tasks we can create a larger structure, a structure of structures, evolving constantly, which is the common language for a town. This is the gate (門徑).