The financial market turmoil at the start of 2018 is the starkest sign yet of a transformation in the global economy. After almost a decade of slow growth, we may finally be returning to what one might call “the old normal”:  faster economic growth coming together with the return of increasing costs, inflation, rising interest rates, and greater volatility. Is the global economy strong enough to withstand these pressures and benefit from improved growth for another year or two?