The Unthinkable
By Amanda Ripley
Your emergency plan assumes people will run. Nearly two decades of disaster research says they'll freeze, gather their belongings, or finish their email first. That gap — between how your plan says people behave and how they actually behave — is the entire subject of Amanda Ripley's The Unthinkable. And in 2026, the gap is wider than ever. Organizations are spending on AI-driven mass notification, weapons detection, and "smart" evacuation systems, while the human beings those systems are supposed to move have never been told the single most reliable finding in disaster science: your brain's first response to a life-threatening event is denial, not action. Ripley's core framework is the survival arc: nearly everyone who lives through a disaster passes through three phases — denial ("this can't be happening"), deliberation (gathering information, looking to others, deciding), and the decisive moment (acting — or failing to). Her canonical case: World Trade Center survivors who, on 9/11, delayed evacuation to shut down computers, make phone calls, and collect personal items. One survivor of both the 1993 bombing and 9/11 describes grabbing a novel on her way out. These weren't irrational people. They were normal brains doing what normal brains do. The revised edition (2024) adds material on pandemic response and on how social media and institutional distrust now shape disaster behavior — which is exactly the environment your next incident happens in.
Category: mindset