Respectfully disagree. If it's not "in your face", you'll forget it's there - or even never have known about it, if you weren't on the project since the beginni

Respectfully disagree. If it's not "in your face", you'll forget it's there - or even never have known about it, if you weren't on the project since the beginning. Also, it won't show up in simple greps. Not saying you should leave every old method around, but for some routines (or part of routines) it can be very instructive to surface what DIDN'T work.