You won't sit with your back to the door? What are you, an Italian mobster? I KNEW we had something in common! Commare!

You know, some people CAN concentrate for longer than 15 minutes. You may be able to concentrate for the entire T hour, so when there is a distraction at mid-point that causes short term memory to be broken, you've lost all that work and the potential for what path COULD have been followed thru for the full time. I would get FURIOUS when I would be concentrating on a problem at work and some moron would interrupt me just to say hi on one of his many many breaks.

My T's phone rings 10 minutes before the end, and the session is essentially over. It empties my brain. I'm not being petty or jealous, YOU RANG A FREAKIN BELL! We were trained HOW MANY TIMES in school to react to that? Sarcasm is the mildest of responses in these cases. "Say hello to my little frien'!" (Not the Godfather, but it is Al Pacino.)