The article explores how people's desire for cash affects the economy, even when the central bank controls interest rates. It shows that in a world where money creation is flexible, the theory of liquidity preference still plays a crucial role in determining income and wealth growth. The behavior of households and banks influences economic outcomes, but financial markets also have a significant impact. The banking system and central banks are important, but they can't control everything in the economy. The study suggests that monetary authorities need to adapt to ensure stability in financial markets.