Why are Silicon Valley investors pouring billions into mines? First, Reed Albergotti (Semafor) and Margaux MacColl (Vanity Fair) weigh in on the foldable iPhone: Did we need it, and is elite hardware enough to secure Apple’s future? Then, why the latest warning about the existential threat of AI is going viral and what’s the controversy over OpenAI’s answer to a never-been-solved math problem. Finally, Margaux explains why tech bros are abandoning screens and heading to the mines.