Additionally, they were ordered to disable all safety mechanisms and run the reactor in a known unsafe condition, causing a massive long-term disaster in... the

Additionally, they were ordered to disable all safety mechanisms and run the reactor in a known unsafe condition, causing a massive long-term disaster in... the Ukraine. The way I attempt to explain the difference between the negative and positive coefficient of reactivity is it's like one car accelerates by pressing the gas pedal and the other car has an engine running WFO and all you ever do is press the brake pedal. It isn't a perfect analogy, but I think it gets the general concept across.