Cause and effect. A simple force taught to even young school children. But do we really understand the repercussions of this principle? A single event, a single change in the daily routine could spark an unprecedented and long reaching chain of events. It happens everyday, tiny, unnoticed actions changing the course of the world, for better or worse. Sometimes they are personal choices, sometimes political choices, and sometimes they are nothing more than accidents, or natural disasters. The course of human history could be drastically altered by nothing more than a simple blackout.