forex ergonomics

Indeed, a reserve currency might almost be defined by its appeal to criminals. Of the €900 billion-worth of euro notes in circulation, a third by value comes in the form of the pink and purple €500 note. Cynics say it was issued to capture a share of the international black market from the dollar, for which the largest denomination is $100. An illegal stash of €500 bills would be lighter, easier to conceal and easier to count. The €500 note was withdrawn by banks in Britain after police said its main use was in organised crime. That is a compliment of sorts to the euro. When Somali pirates or Russian gangsters demand payment in yuan, it will be the surest sign that economic power has shifted to China.


http://www.economist.com/node/21528988