All in all, one word, the long absence of the co - author was he went to training and here the picture he would like to share with all of you. These guys and gals are all the think tankers in the my training industry. Some of them would be brainstorming one problem and the other would be with another problem. There's actually a Mohinder Suresh look alike in my department but he was not around. Too bad I can't show him here. Maybe next time.