Chesterton's meta-fence: "in our current system (democratic market economies with large governments) the common practice of taking down Chesterton fences is a process which seems well established and has a decent track record, and should not be unduly interfered with (unless you fully understand it)".
The more advance versions of the fence apply even if the reasons for the fence are unknown or bad (or badly explained).
I'm not sure I've encountered these more advanced versions. is there a link?