Policies such as Quantitative Easing which has been in the news lately are predicated on a mistaken belief about the way the banking system operates and how the non-government and government sectors interact. One of the hard-core parts of mainstream macroeconomic theory that gets rammed into students early on in their studies, often to their eternal disadvantage, is the concept of the money multiplier. It is a highly damaging concept because it lingers on in the students’ memories forever, or so it seems. It is also not even a slightly accurate depiction of the way banks operate in a modern monetary economy characterised by a fiat currency and a flexible exchange rate. So lets see why!