Yeah. In my case, i think it was the intermittant reinforcement? We probably seemed at times to be getting our separate points across to each other - neither of us wanted to accept or believe that the other was such an idiot! - and that kept us sucked in and coming back for more, the promise of finally succeeding at convincing them, at turning them away from the dark side, to our light. Unfortunately they were thinking exactly the same thing.

But nevertheless, a very good point.