Wall Street is handing more decisions to AI. What could go wrong?

At 10:08 a.m. on April 7, 2025, U.S. stocks were deep in the red. Then what looked like good news arrived: A claim began circulating on X that Kevin Hassett, director of the White House National Economic Council, had said President Donald Trump was considering a 90-day pause on tariffs for every country except China. Market-focused accounts quickly amplified it. CNBC repeated the unconfirmed claim on air, and Reuters subsequently published a report citing CNBC. Stocks took off almost immedia...