Psychologically I think there are some good straws at which to grasp. Note how meta and recursion appeal to nerds a lot. Possible explanations include its extensive use in computer science and even GEB itself (now that's meta). Philosophers in general seem less interested in it, in general, in general, and common folk seem uninterested in it. Now recall that I am grasping at straws. Here is one of them: perhaps the more precise your thinking, the more you must seek whence.