Reading the code, and running it. You can ask it for a complete project tree and even test scripts (you have to ask it to continue as it gets interrupted someti

Reading the code, and running it. You can ask it for a complete project tree and even test scripts (you have to ask it to continue as it gets interrupted sometimes). I e.g. had it write a simple database engine with an API, and it produced Rust code as well as curl-based examples to test the database. It even correctly added up the data items it sent into the DB via curl to show what the output would probably look like. Pure sci-fi technology.