blackout

Fifteen years ago over the next two days a massive disruption to the power grid in the northeast United States and Ontario left some fifty-five million without electricity, caused by a software bug at the control room of a single monitoring station that failed to compensate for an overloaded transformer (a fallen branch) that cascaded quickly across the entire network.
These memories of 2003, absolutely crippling metropolises like New York City, illustrate how delicate, brittle our infrastructure is and how quickly things fall apart and an important reminder how important it is to have a contingency plan for when things go wrong.