The document discusses using code generation to create generic CRUD screens for a domain model that contains hundreds of classes. Manually coding all the required classes, interfaces, JSPs, XML files, etc. for each domain class would require typing thousands of lines of code and make ongoing changes difficult. The approach involved generating as much code as possible from the domain model and database, while allowing parts to be hand-coded when patterns emerged. This balanced automatic generation with manual flexibility. Overall, code generation provided flexibility to be responsive over time as the domain knowledge and needs evolved.