In August, Lance Johnson woke up in the middle of the night with excruciating stomach pain in his lower right side. He initially blamed it on the pizza and ice cream he had enjoyed the night before. But five sleepless hours later, the 17-year-old from Phoenix was still suffering, so he decided to consult the nearest expert: ChatGPT. “I described what I'd eaten the night before and where the pain was, and I was like, ‘Do you think it's just my stomach?’ And then it said that it sounded like it