Prepare for the Swans----black or white

The classic "Black Swan" is a must read, and describes the possibility of a foreign event causing the crash of the stock market. One must always consider that this is possibility...and prepare for it by hedging in some way. There has been some quibbling with the title of the book, and a subsequent author has suggested that internal market forces, or "white swans" could cause the crash...Prepare for both...Computer systems malfunction and cause panic...these are realistic events and have happened frequently in the past five years. Be warned.