This is what you learn in advanced macro. People's expectations of inflation lead to it, because your expectation of future purchasing power = willingness to hold cash balances. When that goes down money velocity goes up = > inflation increases, potentially leading to hyperinflation if all confidence in the currency is lost.
Or in as a central banker put it "When it gets serious, that's when you have to lie"
This is what you learn in advanced macro. People's expectations of inflation lead to it, because your expectation of future purchasing power = willingness to hold cash balances. When that goes down money velocity goes up = > inflation increases, potentially leading to hyperinflation if all confidence in the currency is lost.
Or in as a central banker put it "When it gets serious, that's when you have to lie"