Mexico City replaced its corrupt male officers with females (they are called cisnes, or swans), who tripled the number of traffic tickets.

WSJ: James Q. Wilson: Excerpts from His Writings in The Wall Street Journal

Whether it is black swans, seagulls or just plain springtime robins, it seems to me that the prudent investors should remain net long of this market.

FORBES: Bevy of Black Swans Or Just A Flock of Seagulls?

It is a reflection of the resilience (fragility) of the entire system and its ability to withstand shocks and extreme events, or the so-called Black Swans.

FORBES: America in Danger of Collapse?

This is similar to naturalists who denied the existence of black swans because they, or their fellow naturalists whose writings they have consulted, had never seen one.

FORBES: Christmas, Kurtosis, Fat Tails, Black Swans And Risk Management, Pt. 2

Provocatively, Mr. Taleb defines Black Swans as events (such as the rise of the Internet or the fall of LTCM) that are not only rare and consequential but also predictable only in retrospect.

WSJ: Shattering the Bell Curve