So the Fed has chosen to hold off on their goal of normalizing interest rates and the ECB has countered with the threat of extending their scheduled QE with more checks and more negative interest rates and the investment community wonders how long can this keep going on. For a long time I suppose, as evidenced by history at least. Ken Rogoff and Carmen Reinhart have meticulously documented periods of “financial repression”, long stretches of years and in some cases decades where short-term and even long-term yields were capped and suppressed below the level of inflation. In the US the most recent repressive cycle extended from 1930 to 1979, during which investors on average earned 1.5% less than the rate their principal was eroding due to inflation. It was a savers nightmare.