Hofstadter's law is the only law that's self referential and practically all of them should be.

    It always takes longer than you expect, even when you take into account Hofstadter's Law.

Goodhart's Law is describing a system that is dynamically stable, like a unicycle. The moment you stop moving, you fall over. And while really clever people can reduce that movement to a very small extent, possibly so small that an untrained observer no longer sees it, for most beginners and journeymen it's easier/safer if you just move a lot.