The tremors that have battered financial markets recently have been nerve-wracking. But remember, the market is not the economy. Economic growth can persist even when markets decline, and that growth can eventually help to stop the slide. Over the last week, US equities have surrendered their gains for the year and then some, volatility has spiked, and interest rates have jumped amid worries that the US economy may be overheating. This is all unsettling for investors, and it’s not easy to see things in perspective in the heat of the moment.