From within one of the AI industry's most safety-conscious organizations, a senior researcher has walked away from significant wealth to sound an alarm the rest of the world is only beginning to hear. His departure from Anthropic — forfeiting equity to speak freely — reflects a conviction that the decisions being made in AI laboratories today carry consequences measured not in quarters or product cycles, but in the long arc of human survival. He places the probability of AI-caused extinction above ten percent, a figure that, whether one accepts it or not, demands the kind of reckoning that com