The diff is never the expensive part. The expensive part comes after: explaining to the person who asked for the change what they actually got, and discovering that "done" meant "tests pass". I spent four years as a founding engineer on a hospitality platform and then alone on a proactive assis...
Source: [Dev.to](https://dev.to/efe_genc/i-made-my-coding-agent-explain-every-change-to-the-customer-here-is-the-skill-3gcc)