I really like when software uses this technique and leaves the logging present in release code. As a sysadmin being able to crank up debugging logs is nearly as

I really like when software uses this technique and leaves the logging present in release code. As a sysadmin being able to crank up debugging logs is nearly as useful as source code access if the developer has been thorough with their logging calls. Seeing internal state goes a long way toward figuring out whys seemingly-correct configuration isn't actually doing what you want.