High Quality Content by WIKIPEDIA articles! Endogenous money creation or destruction is the concept that each participant in the economy has their own version of a `printing press` for money. This concept was explained by Irving Fisher in his treatise on The Theory of Interest (1930) in terms of the value of currency being affected by two (potentially opposing) movements - expected growth in the money supply reducing the real purchasing power of money and expected increases in productivity increasing the real purchasing power of money.