This week, President Trump announced sweeping new tariffs that are roiling the global economy. We discuss what this could mean for the tech sector and whether this will give China a competitive advantage over the United States in the development of A.I. Then, we chat with a Wall Street Journal reporter, Keach Hagey, about her new book on Sam Altman and how she solved the mystery of his firing from OpenAI. And finally, Tinder has a new chatbot that you can practice your flirting skills with — which means it’s time for a flirting competition. Guest:Keach Hagey, Wall Street Journal reporter and author of the forthcoming book The Optimist: Sam Altman, OpenAI, and the Race to Invent the Future. Additional Reading:What Trump’s Sweeping Tariffs Mean for the Global Economy, and for YouTrump’s New Tariffs Test Apple’s Global Supply ChainThe Secrets and Misdirection Behind Sam Altman’s Firing From OpenAI We want to hear from you. Email us at [email protected]. Find “Hard Fork” on YouTube and TikTok. Unlock full access to New York Times podcasts and explore everything from politics to pop culture. Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify.