This also glosses over something else. Comprehensive documentation can even be really well documented code! And in small corps, there's the "guy who wrote it"

This also glosses over something else. Comprehensive documentation can even be really well documented code! And in small corps, there's the "guy who wrote it" was "hit by a bus" scenario. It doesn't matter how dilligent, or how faithful someone may be when they leave, eg walking a replacement through the codebase can't happen of you're dead! This is how I document. I think about being hit by a bus, and what would this corp do? A replacement hiree do? See? Not doing this is, IMO, should be criminal. Like a CFO not keeping books.