I went to the courthouse in Gwinnett County yesterday. In front of me at the metal detector were some guys putting their pocket contents in the little plastic tubs. I wasn't paying much attention to them, as I was putting my stuff in a tub and sending my case down the conveyor belt to the xray machine. Then one of the deputies manning the post says loudly, "Hey, who's is this?" He had picked out of one of the guys' tubs a large leather case containing a folding pocket knife (probably 5 or 6 inches worth). The owner claimed it, and the deputy said, "You can't come in here with this. Take it back outside." I suppose it's debatable whether a folding knife is "designed for the purpose of offense or defense," but the deputy could have made life a lot more unpleasant for the guy. I don't know if the same courtesy (of being allowed to take it outside to the car) would be extended to someone carrying, but I thought it was an interesting encounter.