Oil shot to its highest price since 2023 after surging again because of the Iran war, and a weak update on the U.S. job market knocked stocks lower to cap Wall Street’s worst week since October. The S&P 500 dropped 1.3% Friday. The Dow Jones Industrial Average plunged as many as 945 points before finishing with a loss of roughly 450, and the Nasdaq composite sank 1.6%. The combination of a weak economy and high inflation is a worst-case scenario for investors because the Federal Reserve has no good tool to fix both problems at the same time.