The 9th of September 2011 saw a power outage in the US affecting 5 million people in the area of Southern California – the root cause analysis of which is said to have been one single employee switching out a piece of problematic equipment. The upshot of this single act is nevertheless extremely worrying, as it manifested in traffic chaos, cancelation of flights, the shutting down of two nuclear reactors, a widespread impact on business, and on the residents.

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