Paranoia can be a funny thing. It seems no matter how well you've prepared or you how you anticipate possible outcomes, there's always someone who can mess your plan up if he knows about it. Ah, but how do you know he knows? He may be acting like he doesn't know so you won't do anything different that he can't predict. This, inevitably, leads to the following paranoid rant: Typical punchline: "...what was I doing again?" I Know You Know I Know breaks down logically, and it obeys some rules. Here are the levels of deception, with examples: Level 0: absolute honesty, no deception.