I suggest a title edit: "Don't be afraid to break stuff in your local checkout of version-controlled stuff." Especially with large projects with many dependenc

I suggest a title edit: "Don't be afraid to break stuff in your local checkout of version-controlled stuff." Especially with large projects with many dependencies, breaking the wrong thing in the wrong way can screw everything up in ways that end up taking many hours and debugger voodoo to properly put back together again. I see these often enough in production -- I feel no need to give myself more ugly, scary bugs to fix just for the experience.