Schrödinger's Code
Code that is never executed might be perfectly bug-free, or it might be spaghetti. Until it is built and a full suite of tests is run against it, there is absolutely no way to know which state it’s in.
John Doe: "Was that code ever run?"
Diana: "No..."
John Doe: "Then it's Schrödinger's Code"
Diana: "No..."
John Doe: "Then it's Schrödinger's Code"