Let us not be like Charles Chu who while travelling on a tour bus in China during a snow storm witness the ahead of him skid and tip over on its side in a rice field. In his haste to help he ran and jump on top of the bus. He grabbed the handle of the emergency door and pulled but the door did not open. He kept pulling and pulling hard but the door just would not budge.
By this time others had joined him and were busy pulling people through the windows so he decided to join them instead, only to see another go over to the door turn the hand and open it. It so happen that in his haste to assist he was standing on the very door he was trying to open