Robots & Artificial IntelligenceThe Substack AI Thought Experiment That Erased $600B and Has Insiders Both Terrified and Ecstatic Posted on April 27, 2026 by Administrator When a 5,000-word essay written from an imaginary future can erase hundreds of billions in market value before lunchtime, something deeper than ordinary volatility is at work. Wall Street, for all its sophisticated modeling and algorithmic firepower, may be running on a foundation of assumptions that are far more fragile than the trading floors would like to admit.