Furthermore, because neoclassical economists conceive of money as having (like gold or silver) a scarcity value, they theorise as if money is subject to market forces, as if money’s ‘price’ – the rate of interest – is a consequence of the supply of and demand for money. Many argue that like commodities, money or savings can become scarce.

But money is not like a commodity, and to define it as such is to create a ‘false commodity’ as Karl Polanyi argued. On the contrary, with the development of sound monetary systems in developed economies, there is never a shortage of money for society’s most important needs. Instead the relevant question is: who controls the creation of money? And to what end is money created?

A small group of distinguished economists all understood that money as part of a developed monetary system is not, and never has taken the form of a commodity. Instead money and the rate of interest are both social constructs: social relationships and social arrangements based primarily and ultimately on trust. The thing we call money has its original basis in belief. Credit is a word based on the Latin word credo: I believe. ‘I believe you will pay, or repay me now or at some point in the future.’ Money and its ‘price’ – the rate of interest – became the measure of that trust and/or promise. Or, if trust is absent, the measure of a lack of trust. If the banker does not fully trust a customer to repay, they will demand more as collateral or in interest payments.