Note to junior engineers reading this: If you don't already know the codebase, this can be a terrible way to get to know it because you get sucked down rabbit h

Note to junior engineers reading this: If you don't already know the codebase, this can be a terrible way to get to know it because you get sucked down rabbit holes and end up having spent 2 weeks with not much to show for it. You need to exercise skill of being able to do an organised exploration of the codebase, probably producing documentation along the way.