In the days when money was backed by its face value in silver or gold, there were limits to how much wealth could flow around the world. Today, it's virtual money that the bank lends into existence on a computer screen. "And unless the economy continually expands, there is no new flow of money to pay back that money, plus interest." . . . "As it stands now, if banks start loaning money more slowly than they collect debts, the quantity of money in the economy goes down, and it's impossible to pay back debts. So we get defaults on houses . . . our economy plunges into misery and unemployment. Under our current monetary system, the only alternative to that is endless growth. So one absolute thing we have to change is the whole nature of the monetary system. . . . we deny banks the right to create money." . . . There's a challenge with that solution, he admits. "You're trying to take the right to create wealth away from some of the wealthiest people on the planet.