The article is about wealth, not money supply. Those are completely different concept. There could theoretically be a lot of wealth and very little money (if no

The article is about wealth, not money supply. Those are completely different concept. There could theoretically be a lot of wealth and very little money (if no one wants to trade there isn't much needed) or not so much wealth and a lot of money (a lot of people need loans to trade and build wealth). It's convenient to measure wealth in dollars in a "how much you could get if you still it" way and it's possible because dollars are very stable but there is very little reason for the amount of dollars circulating to represent existing wealth.