A world without cash seems wonderful at first glance since it is convenient and fast. You don’t need to withdraw dollars or euros ahead of time. You don’t have to worry about money being lost or stolen. Paying for things with your phone is a breeze.

Many countries around the world are steadily shifting away from cash. Canada, the United Kingdom and Sweden have already largely embraced a cashless society. The U.S. is also steadily making the move, with people holding smaller amounts of cash.

However, the recent string of natural disasters and security breaches at major financial entities exposes a huge flaw in this trend: When the power goes out, telephone lines shut down or account information is stolen, it is impossible to use ATMs, credit or debit cards or mobile payments – no matter how rich you are.

In other words, giving up cash increases the chance of the kind of economic catastrophe that results when people can no longer easily trade for the goods they need and want. The solution to this national security issue is simple: bring back the currently maligned large denomination bills like the $500, which was discontinued in 1969. Continue reading Why we should bring back the $500 note and other big bills →