Yes
I quickly realized I didn't need to understand the old code at all
afiodorov on Hacker News
In the thread “Getting AI to work in complex codebases”
Helped: Extracting behavior into specs and unit tests before handing to agent.
… * Hand the problem and the tests to a coding agent. I quickly realized I didn't need to understand the old code at all. My entire focus was on whether the new code was faithful to the spec. …