World economies have been propped up since 2008 via massive money creation by central banks and cheap credit with negative real interest rates, and - so the narrative goes - because the US Fed is indicating faster interest rate rises so as to normalise them to match the inflation rate then the 'everything bubble' in stocks, property, cryptos, fine art, etc, are going to pop as the cost of taking on debt (leverage) in future will be more expensive. Virtually none of the trillions pumped into the system with QE and the like has found its way to ground level hence inflation has been quite moderate; the dough's gone into rocketing asset classes instead.