One of the first things an organisation should draft as part of their Business continutiy planning or Crisis management plan is the register of risks which their organisation must plan for, mitigate and manage. However how many events which have required the invocation of crisis management were in the risk register. I am currently reading the Black Swan which argues that the events which impact us greatest are those which are unforeseen. A good plan must be flexible enough to enable response even to those Black Swans