I only delete code I know I'm not going to use later. Refactoring, especially renaming files, WILL make it next to impossible to find ... It won't, if you use

I only delete code I know I'm not going to use later. Refactoring, especially renaming files, WILL make it next to impossible to find ... It won't, if you use proper commit messages. Once you start doing that, you'll soon discover it will make everything much more discoverable. Apart from that, death to dead code! Having worked on a project where about 10 to 20% of the code was effectively dead (either simply unused, commented out, #ifdef'ed away of if( 0 )'d away) I can assure you I never ever want that again, mainly since the dead parts still turn up in every search/grep/find reference.