Level of incomprehensibility. As a goal for a species, it's a
  good one. Reminds me of the Peter Principle from the workplace:
  A man is promoted to his level of incompetence. [he can't
  advance anymore because at the final level, he's over his head,
  but can't go back down either]
  [and the moral is: "That's why the world is run by incompetent
  ppl" grin emoticon ]