The long-lived projects I've seen have some code that mostly works that doesn't have any tests and is hard to grok. Nobody touches it because 1) any change migh

The long-lived projects I've seen have some code that mostly works that doesn't have any tests and is hard to grok. Nobody touches it because 1) any change might break something unexpected and 2) if you touch it, you might end up owning it. I wouldn't call that good code but it's often too good to spend time replacing.