They are just possibilities, but worries about them are weighing on the markets.Stock and bond markets in disarrayYields on long-term bonds have fluctuated, suggesting the markets have little conviction about where the economy is headed.If the Fed does raise rates, it won’t take much for short-term interest rates to exceed the level of long-term ones — which would be another bad omen for the economy. Such a juxtaposition of interest rates, known as a yield curve inversion, has often preceded recessions.The broad stock market has gotten off to one of its worst starts since 1900, Bloomberg records show. The markets are swinging up and down. But already this year, the S&P 500 has been down more than 10 percent from its peak, a drop known on Wall Street as a correction, while the Nasdaq composite has been more than 20 percent below its November peak, putting it into what Wall Street calls bear market territo …
