OpenAI’s new big language model, GPT-5, has been hyped as getting close to human-level smarts. But real-life tests show it still makes some pretty silly mistakes. Recently, a retired economics professor named Gary Smith put GPT-5 to the test with a simple game—rotated tic-tac-toe—and the results were eye-opening. What Happens When GPT-5 Meets Rotated Tic-Tac-Toe










