The above picture, taken in the midst of the Zimbabwe hyperinflation and posted around the internet, illustrates well how fiat money can become nearly worthless when the central bank creates too much of it.  I was hoping to put the photo in the next edition of my textbook, but my publisher is having trouble locating the photographer from which to obtain reprint permission.  If you are photographer, or know his name and contact information, or have a similar picture for which you hold copyright, please contact me.