Others blocked the door when the elevator arrived. A small minority of people would stand back and anticipate the elevator would not go down before all were off loaded, new people back on and the door closed. They would wait to get in last and they were the first to get off on the way down. I won't tell you which group did the best because you will have to decide for yourself how you would react. This little experiment was important because trading is not so different from the elevator.
Markets go up and down and trends take off, stall and fall.
And then they do nothing for a period of time. Behavior modification for the elevator riders didn't occur to most of the people. It is the same with trading. Ok we watched behavior and next we would tell the group of would-be traders that they would have to stand back because the elevator would be packed with people getting off. They became so good that they didn't even care to anticipate which elevator would be up first.