The Swiss Cheese model of defense
By Di, January 05 2021Human beings are flawed. So no system of defense that depends on human action is going to be able to protect us 100% of the time. But we can prevent most problems. In 1990, Professor James Reason came up with the "Swiss Cheese model" to create defenses that are hard to break through.
Think about Swiss cheese—it has lots of holes in it, right? Well, the Swiss Cheese defense model takes the "holes", or human flaws, into account by using several layers of defense. Each layer has holes, but not every layer has the same holes. So, put enough different layers together and there won't be a complete series of holes that line up to allow something through. Each human failure will be blocked by other successes.