In 1666 there was a huge fire in London. More than three hundred houses caught fire on the first day. A lot, isn’t it? The problem was that the fire's dimensions were too large, and the firefighters were not coping. The mayor then tried an alternative solution: demolishing houses and businesses close to the fire, thereby preventing the adjacent houses from burning. It would create a “barrier” by removing houses from the path. The fire would have nothing to burn and would not spread.