Manipulating a photo used to take skill, but now a convincing fake is just a prompt away. Contributing Correspondent Kai Kupferschmidt visited Hany Farid, a pioneer of digital forensics, to find out how he’s keeping his edge in the era of generative artificial intelligence. From shadows that don’t line up to sound that doesn’t match a scene, Farid breaks down his everyday work of teasing apart what’s real and what’s fake.