I find it invaluable when I have to dive into unfamiliar codebases, which is unfortunately too often. Mental maps are great when you can work with the same code

I find it invaluable when I have to dive into unfamiliar codebases, which is unfortunately too often. Mental maps are great when you can work with the same code for awhile and keep all of that knowledge in the front of your brain, otherwise you should just outsource them.