Hundreds of the nation’s computer scientists gathered for a conference in Denver last fall, and Tuan Tran had a big test for them: Could they tell the difference between the real Brad Pitt and an AI-generated version of him?Hundreds of the nation’s computer scientists gathered for a conference in Denver last fall, and Tuan Tran had a big test for them: Could they tell the difference between the real Brad Pitt and an AI-generated version of him?Security[#item_full_content]