True!--nervous--very, very dreadfully nervous I had been and am; but why will you say that I am mad?
It took me an hour to place my whole head within the opening so far that I could see him as he lay upon his bed. Ha!--would a madman have been so wise as this?
As the bell sounded the hour, there came a knocking at the street door. I went down to open it with a light heart--for what had I to fear?
I smiled--for what had I to fear?
All of the above are examples of an argumentative technique called ____________________.