On Thursday, the Federal Reserve under Kevin Warsh raised interest rates in a deliberate effort to slow inflation, accepting short-term pain as the price of longer-term stability. Markets lurched downward before finding their footing by Friday morning — a familiar rhythm of fear followed by reluctant acceptance. The decision will reach into the daily lives of ordinary Americans through costlier mortgages, car loans, and credit cards, reminding us that the levers of monetary policy, however abstract, are ultimately pulled in kitchens and driveways.