“I came to discuss Black Swans, and I intended to tell them that the only thing I know is that we know precious little about them, but that it was their property to sneak up on us, and that attempts at Platonifying them led to additional misunderstandings. Military people can understand such things, and the idea became recently prevalent in military circles with the expression unknown unknown (as opposed to the known unknown).” RiskMilitaryUncertaintyBlack SwanUnknown Unknowns Book:The Black Swan: The Impact of the Highly Improbable Source: The Black Swan: The Impact of the Highly Improbable