Discover how human beings react to danger—and what makes the difference between life and death

“Fascinating and useful . . . [shows that] the most important variable in an emergency is your own behavior.”—The New York Times

Today, nine out of ten Americans live in places at significant risk of earthquakes, hurricanes, tornadoes, terrorism, or other disasters. Tomorrow, some of us will have to make split-second choices to save ourselves and our families. How will we react? What will it feel like? Will we be heroes or victims?

In her quest to answer these questions, award-winning journalist Amanda Ripley traces human responses to some of recent history’s epic disasters, from the explosion of the Mont Blanc munitions ship in 1917–one of the biggest explosions before the invention of the atomic bomb–to the journeys of the 15,000 people who found their way out of the World Trade Center on September 11, 2001. To understand the science behind the stories, Ripley turns to leading brain scientists, trauma psychologists, and other disaster experts. She even has her own brain examined by military researchers and experiences, through realistic simulations, what it might be like to survive a plane crash into the ocean or to escape a raging fire.

Ripley comes back with precious wisdom about the surprising humanity of crowds, the elegance of the brain’s fear circuits, and the stunning inadequacy of many of our evolutionary responses. Most unexpectedly, she discovers the brain’s ability to do much, much better–with just a little help.
Chapter 1

Delay: Procrastinating in Tower 1


On February 26, 1993, when terrorists attacked the World Trade Center for the first time, Elia Zedeno was in an express elevator carrying a slice of Sbarro's pizza. She had taken a new temporary worker to the food court to show him around, and they were on their way back to their desks. When the bomb exploded, they heard a loud pop and the elevator stopped and began to descend. Then it stopped for good, trapping her and five other people. Smoke began to slowly coil in from below. Two men grappled with the door. A woman dropped to her knees and started praying, making Zedeno nervous. Then one of the men calmly directed everyone to get low and cover their faces. They all did as they were told.

Zedeno concentrated on keeping her breathing shallow and slow. But the more she tried to calm down, the harder her heart seemed to pound. Then they heard a man screaming in the elevator next to them. "I'm burning up!" he yelled as he banged on the metal box around him. But soon he was quiet. "I remember thinking, 'We're going to be next,'" Zedeno says. She visualized rescue workers finding them dead inside the elevator later. Just then, she thought she would lunge for the doors and start banging herself. But before she could, the temp had started doing it for her. He was screaming and banging. So Zedeno took charge of quieting him down. "Robert, calm down. You're going to inhale too much smoke," she told him. He started to cough and returned to the floor.

It was around then that Zedeno was filled with a wave of peace, inexplicably. "Regardless of the outcome, I knew everything was going to be OK," she remembers. "My breath became effortless. My mind no longer wandered. Suddenly, I wasn't there anymore. I was just watching. I could see the people lying in the elevator. The sounds were far away, and I was just hovering. I had no emotions."

When they'd been in the elevator for about an hour, a firefighter managed to rip open the door and pull them out. It turned out the car had returned to the lobby level, and that's where they'd been all along. Zedeno could not see the face of the firefighter who pulled her out; the smoke was too thick. She did as he instructed, grabbing onto a rope and following it out through the lobby and out the doors. She was stunned by the darkness in the lobby and the emptiness outside. She thought that once she had made it out of her own private catastrophe, everything would be normal, bustling and bright. She never imagined that a place could look so different.

In the basement below, a Ryder truck full of eleven hundred pounds of explosives had left a crater five stories deep. Six people had died. It was the largest full-building evacuation in U.S. history, and nothing had gone the way it was supposed to go. Smoke purled up the stairways. The power failed, rendering the emergency communications system useless and the stairways dark. People moved extraordinarily slowly. Ten hours after the explosion, firefighters were still finding people who had not yet evacuated in their offices.

After the bombing, glow-in-the-dark tape and backup power generators were installed in the Trade Center. Both helped save lives eight years later. But still no one fully answered the fundamental question: why did people move so slowly? And what did it mean about all of our assumptions about skyscrapers—and the Trade Center in particular? The 1993 bombing became a story about terrorism, as would the attacks on the same buildings eight years later, and rightly so. But they were also stories of procrastination and denial, the first phase of the human disaster experience.

A few days later, Zedeno was right back at work in a neighboring building. One month later, her office reopened on the seventy-third floor of Tower 1. She started riding the same elevator to work. But it was months before she could get the taste of soot out of her mouth. She thought about leaving the towers, but not with any conviction. "I remember saying, 'This could happen again.' And someone said, 'Lightning never strikes twice.'"

"Don't Worry. It's in Your Head!"

Zedeno has a small stature, round glasses, and Dizzy Gillespie cheeks when she smiles, which happens often. She came to America with her family from Cuba when she was eleven. Her parents had spent her entire childhood plotting to get away from Fidel Castro. When they finally got permission to leave in the early 1970s, they moved to West New York, New Jersey, where their daughter could see the brand-new Trade Center Towers sunning themselves almost everywhere she went.

When she was nineteen, Zedeno visited the Trade Center for the first time. She came to apply for a secretarial job with the Port Authority of New York/New Jersey. She had no idea what the Port Authority did—or even that it owned the Trade Center—but a girlfriend convinced her to fill out the application. When she returned for her second interview, her mother came with her. The boss hired her on the spot, and, on her lunch break, Zedeno ran to the plaza to tell her mother. "What will you do?" she asked her mother, who had no idea how to get home to New Jersey. "I will sit right here and wait for you," her mother announced. They took the train home together that evening.

Eventually, Zedeno got promoted to the finance section. Her office had regular fire drills, which consisted of gathering in the hallway to gossip. During a blackout in 1990, she and her office mates walked down the tower's stairs. That's how they learned that homeless people had been using the lower stairwells as bathrooms. "We were laughing and talking," she remembers. When Zedeno talks, her voice goes up at the end of her sentences, like a child telling you something outrageous. "The whole thing was a joke!"

Zedeno is a witness wherever she goes. She remembers life in surround-sound detail. When I ask her what it was like to leave Cuba as a little girl, she tells me about the day she left in April of 1971. Her mother was doing her hair when they heard the sound of a motorcycle. "Only one man in town had a motorcycle, and it didn't sound like that," she says. Suddenly, the sound stopped in front of their house. A soldier walked in the front door without knocking and told them to leave. Zedeno knew this was good news: they had finally won permission to go to America. Fifteen minutes later, they left their house forever. They were terrified the whole journey out, but they made it. When they arrived in Miami, Zedeno ran down the aisles of a supermarket yelling out descriptions of everything she saw.

By September 2001, Zedeno had worked in the towers for over twenty-one years. She was forty-one years old, and she managed five employees on the seventy-third floor of Tower 1. Her group oversaw the Port Authority's engineering consultants. On 9/11, Zedeno got to work a little after 8:00 A.M. She settled into her cubicle and listened to her voice-mail messages. In an hour, she would head up to the cafeteria to get some breakfast, as usual.

The Trade Center did not feel like a cluster of seven buildings; it felt like a city. Every day, fifty thousand people came to work there, and another two hundred thousand passed through. The plaza underneath held the largest shopping mall in Lower Manhattan. "You didn't need to leave for anything," Zedeno says. The complex had 103 elevators—and its own zip code (10048). Bomb threats and small fires were not uncommon. The engine company across the street sometimes got called to the Trade Center eight times a day. Zedeno got used to seeing firefighters in the elevators. Days later, she would hear that there had been smoke somewhere in the building. It might have been two football fields away from her.

At 8:46 A.M., an American Airlines Boeing 767 traveling 490 mph struck the building eleven floors above her. When the plane hit Zedeno's building, the effect was not subtle. It obliterated four floors immediately. From her desk, Zedeno heard a booming explosion and felt the building lurch to the south, as if it might topple. It had never done that before, not even in 1993. This time, she grabbed her desk and held on, lifting her feet off the floor. "I actually expected the ceiling to fall and the building to cave in," she remembers. At the time, she screamed, "What's happening?"

Talking about it now, in a deli across from the void where the towers once stood, Zedeno wonders why she didn't immediately run for the stairs. She'd been through this before, after all. But what she really wanted, quite desperately, was for someone to answer back: "Everything is OK! Don't worry. It's in your head!" At the moment of impact, Zedeno had entered a rarefied zone. The rules of normal life were suspended. Her entire body and mind changed. She would wind her way through a series of phases along the survival arc. First would be a thicket of disbelief, followed by frantic deliberation, and, finally, action. We will witness all three here, but more than anything else, Zedeno's story is one of denial.

Zedeno has revisited the moments of her escape from the Trade Center until they are worn and familiar. She now gives tours of Ground Zero to tourists from around the world. But still there are riddles she cannot decipher, behavioral glitches that don't make obvious sense. More than anything else, she is mystified by how slow she was to accept what was happening all day long.
“Fascinating and useful.”The New York Times

“A must read. We need books like this to help us understand the world in which we live.”—Nassim Nicholas Taleb, author The Black Swan and Fooled by Randomness

“Engrossing and lucid . . . facing the truth about the human capacity for risk and disaster turns out to be a lot less scary than staying in the dark.”O: The Oprah Magazine

The Unthinkable isn’t merely a book about disaster; it’s a book about survival—maybe yours.”—Gavin de Becker, author of The Gift of Fear
 
“Ripley is a voyeur on a mission. . . . Her conviction: We’d all stand a better chance of surviving a disaster if we understood what happens to our little gray cells when things get ugly. . . . Spiced with surprising factoids, this book might save your life one day.”Bloomberg News

“This is a book with a purpose, meant to change things.”—Rob Hardy, The Commercial Dispatch

“These tales leave your viscera enflamed because they compel two questions: ‘What would it feel like to go through that?’ and ‘Would I do the right thing and survive?’ This is an irresistible book.”—Robert M. Sapolsky, author of Determined

The Unthinkable is the most magnificent account of a survivor’s mind that I have ever read. It has helped me know and accept some of my reactions during my seventy-two-day ordeal in the Andes. I can now understand how fear motivated me, and how denial also played a part. This book will help those who’ve never faced disaster to understand their own behavior and be prepared should their luck run out one day.”—Nando Parrado, author of Miracle in the Andes

The Unthinkable reveals why, under the same circumstances, some people caught up in a disaster survive and others do not. In her well-crafted prose, Amanda Ripley shows us all how to prepare to meet danger and increase our chances of surviving the unthinkable.”—Bruce Henderson, author of Down to the Sea and True North

“When a disaster occurs we invariably learn the ‘what’ of the event—how many died, how many survived. Amanda Ripley’s riveting The Unthinkable provides genuine insight into the ‘why’ behind the numbers. This remarkable book will not only change your life, it could very well save it.”—Gregg Olsen, author of The Deep Dark: Disaster and Redemption in America’s Richest Silver Mine

“Ever fantasize about what you would do in a disaster? How would you survive? How would you behave? After interviewing survivors of the World Trade Center attack, Amanda Ripley sifted through amazing tales of survivors from other disasters and mined various sociological, psychological, and neurological studies. Her insights are absolutely fascinating, and they could come in handy one day.”—Walter Isaacson, author of Elon Musk
© Greg Martin
Amanda Ripley is a New York Times bestselling author, Washington Post contributor, and co-founder of Good Conflict, a company that helps people get smarter about how they fight. Her work has appeared in Time, Politico, The New York Times, The Atlantic, The Wall Street Journal, Slate, and Harvard Business Review. Her other books include The Smartest Kids in the World and High Conflict. View titles by Amanda Ripley

About

Discover how human beings react to danger—and what makes the difference between life and death

“Fascinating and useful . . . [shows that] the most important variable in an emergency is your own behavior.”—The New York Times

Today, nine out of ten Americans live in places at significant risk of earthquakes, hurricanes, tornadoes, terrorism, or other disasters. Tomorrow, some of us will have to make split-second choices to save ourselves and our families. How will we react? What will it feel like? Will we be heroes or victims?

In her quest to answer these questions, award-winning journalist Amanda Ripley traces human responses to some of recent history’s epic disasters, from the explosion of the Mont Blanc munitions ship in 1917–one of the biggest explosions before the invention of the atomic bomb–to the journeys of the 15,000 people who found their way out of the World Trade Center on September 11, 2001. To understand the science behind the stories, Ripley turns to leading brain scientists, trauma psychologists, and other disaster experts. She even has her own brain examined by military researchers and experiences, through realistic simulations, what it might be like to survive a plane crash into the ocean or to escape a raging fire.

Ripley comes back with precious wisdom about the surprising humanity of crowds, the elegance of the brain’s fear circuits, and the stunning inadequacy of many of our evolutionary responses. Most unexpectedly, she discovers the brain’s ability to do much, much better–with just a little help.

Excerpt

Chapter 1

Delay: Procrastinating in Tower 1


On February 26, 1993, when terrorists attacked the World Trade Center for the first time, Elia Zedeno was in an express elevator carrying a slice of Sbarro's pizza. She had taken a new temporary worker to the food court to show him around, and they were on their way back to their desks. When the bomb exploded, they heard a loud pop and the elevator stopped and began to descend. Then it stopped for good, trapping her and five other people. Smoke began to slowly coil in from below. Two men grappled with the door. A woman dropped to her knees and started praying, making Zedeno nervous. Then one of the men calmly directed everyone to get low and cover their faces. They all did as they were told.

Zedeno concentrated on keeping her breathing shallow and slow. But the more she tried to calm down, the harder her heart seemed to pound. Then they heard a man screaming in the elevator next to them. "I'm burning up!" he yelled as he banged on the metal box around him. But soon he was quiet. "I remember thinking, 'We're going to be next,'" Zedeno says. She visualized rescue workers finding them dead inside the elevator later. Just then, she thought she would lunge for the doors and start banging herself. But before she could, the temp had started doing it for her. He was screaming and banging. So Zedeno took charge of quieting him down. "Robert, calm down. You're going to inhale too much smoke," she told him. He started to cough and returned to the floor.

It was around then that Zedeno was filled with a wave of peace, inexplicably. "Regardless of the outcome, I knew everything was going to be OK," she remembers. "My breath became effortless. My mind no longer wandered. Suddenly, I wasn't there anymore. I was just watching. I could see the people lying in the elevator. The sounds were far away, and I was just hovering. I had no emotions."

When they'd been in the elevator for about an hour, a firefighter managed to rip open the door and pull them out. It turned out the car had returned to the lobby level, and that's where they'd been all along. Zedeno could not see the face of the firefighter who pulled her out; the smoke was too thick. She did as he instructed, grabbing onto a rope and following it out through the lobby and out the doors. She was stunned by the darkness in the lobby and the emptiness outside. She thought that once she had made it out of her own private catastrophe, everything would be normal, bustling and bright. She never imagined that a place could look so different.

In the basement below, a Ryder truck full of eleven hundred pounds of explosives had left a crater five stories deep. Six people had died. It was the largest full-building evacuation in U.S. history, and nothing had gone the way it was supposed to go. Smoke purled up the stairways. The power failed, rendering the emergency communications system useless and the stairways dark. People moved extraordinarily slowly. Ten hours after the explosion, firefighters were still finding people who had not yet evacuated in their offices.

After the bombing, glow-in-the-dark tape and backup power generators were installed in the Trade Center. Both helped save lives eight years later. But still no one fully answered the fundamental question: why did people move so slowly? And what did it mean about all of our assumptions about skyscrapers—and the Trade Center in particular? The 1993 bombing became a story about terrorism, as would the attacks on the same buildings eight years later, and rightly so. But they were also stories of procrastination and denial, the first phase of the human disaster experience.

A few days later, Zedeno was right back at work in a neighboring building. One month later, her office reopened on the seventy-third floor of Tower 1. She started riding the same elevator to work. But it was months before she could get the taste of soot out of her mouth. She thought about leaving the towers, but not with any conviction. "I remember saying, 'This could happen again.' And someone said, 'Lightning never strikes twice.'"

"Don't Worry. It's in Your Head!"

Zedeno has a small stature, round glasses, and Dizzy Gillespie cheeks when she smiles, which happens often. She came to America with her family from Cuba when she was eleven. Her parents had spent her entire childhood plotting to get away from Fidel Castro. When they finally got permission to leave in the early 1970s, they moved to West New York, New Jersey, where their daughter could see the brand-new Trade Center Towers sunning themselves almost everywhere she went.

When she was nineteen, Zedeno visited the Trade Center for the first time. She came to apply for a secretarial job with the Port Authority of New York/New Jersey. She had no idea what the Port Authority did—or even that it owned the Trade Center—but a girlfriend convinced her to fill out the application. When she returned for her second interview, her mother came with her. The boss hired her on the spot, and, on her lunch break, Zedeno ran to the plaza to tell her mother. "What will you do?" she asked her mother, who had no idea how to get home to New Jersey. "I will sit right here and wait for you," her mother announced. They took the train home together that evening.

Eventually, Zedeno got promoted to the finance section. Her office had regular fire drills, which consisted of gathering in the hallway to gossip. During a blackout in 1990, she and her office mates walked down the tower's stairs. That's how they learned that homeless people had been using the lower stairwells as bathrooms. "We were laughing and talking," she remembers. When Zedeno talks, her voice goes up at the end of her sentences, like a child telling you something outrageous. "The whole thing was a joke!"

Zedeno is a witness wherever she goes. She remembers life in surround-sound detail. When I ask her what it was like to leave Cuba as a little girl, she tells me about the day she left in April of 1971. Her mother was doing her hair when they heard the sound of a motorcycle. "Only one man in town had a motorcycle, and it didn't sound like that," she says. Suddenly, the sound stopped in front of their house. A soldier walked in the front door without knocking and told them to leave. Zedeno knew this was good news: they had finally won permission to go to America. Fifteen minutes later, they left their house forever. They were terrified the whole journey out, but they made it. When they arrived in Miami, Zedeno ran down the aisles of a supermarket yelling out descriptions of everything she saw.

By September 2001, Zedeno had worked in the towers for over twenty-one years. She was forty-one years old, and she managed five employees on the seventy-third floor of Tower 1. Her group oversaw the Port Authority's engineering consultants. On 9/11, Zedeno got to work a little after 8:00 A.M. She settled into her cubicle and listened to her voice-mail messages. In an hour, she would head up to the cafeteria to get some breakfast, as usual.

The Trade Center did not feel like a cluster of seven buildings; it felt like a city. Every day, fifty thousand people came to work there, and another two hundred thousand passed through. The plaza underneath held the largest shopping mall in Lower Manhattan. "You didn't need to leave for anything," Zedeno says. The complex had 103 elevators—and its own zip code (10048). Bomb threats and small fires were not uncommon. The engine company across the street sometimes got called to the Trade Center eight times a day. Zedeno got used to seeing firefighters in the elevators. Days later, she would hear that there had been smoke somewhere in the building. It might have been two football fields away from her.

At 8:46 A.M., an American Airlines Boeing 767 traveling 490 mph struck the building eleven floors above her. When the plane hit Zedeno's building, the effect was not subtle. It obliterated four floors immediately. From her desk, Zedeno heard a booming explosion and felt the building lurch to the south, as if it might topple. It had never done that before, not even in 1993. This time, she grabbed her desk and held on, lifting her feet off the floor. "I actually expected the ceiling to fall and the building to cave in," she remembers. At the time, she screamed, "What's happening?"

Talking about it now, in a deli across from the void where the towers once stood, Zedeno wonders why she didn't immediately run for the stairs. She'd been through this before, after all. But what she really wanted, quite desperately, was for someone to answer back: "Everything is OK! Don't worry. It's in your head!" At the moment of impact, Zedeno had entered a rarefied zone. The rules of normal life were suspended. Her entire body and mind changed. She would wind her way through a series of phases along the survival arc. First would be a thicket of disbelief, followed by frantic deliberation, and, finally, action. We will witness all three here, but more than anything else, Zedeno's story is one of denial.

Zedeno has revisited the moments of her escape from the Trade Center until they are worn and familiar. She now gives tours of Ground Zero to tourists from around the world. But still there are riddles she cannot decipher, behavioral glitches that don't make obvious sense. More than anything else, she is mystified by how slow she was to accept what was happening all day long.

Praise

“Fascinating and useful.”The New York Times

“A must read. We need books like this to help us understand the world in which we live.”—Nassim Nicholas Taleb, author The Black Swan and Fooled by Randomness

“Engrossing and lucid . . . facing the truth about the human capacity for risk and disaster turns out to be a lot less scary than staying in the dark.”O: The Oprah Magazine

The Unthinkable isn’t merely a book about disaster; it’s a book about survival—maybe yours.”—Gavin de Becker, author of The Gift of Fear
 
“Ripley is a voyeur on a mission. . . . Her conviction: We’d all stand a better chance of surviving a disaster if we understood what happens to our little gray cells when things get ugly. . . . Spiced with surprising factoids, this book might save your life one day.”Bloomberg News

“This is a book with a purpose, meant to change things.”—Rob Hardy, The Commercial Dispatch

“These tales leave your viscera enflamed because they compel two questions: ‘What would it feel like to go through that?’ and ‘Would I do the right thing and survive?’ This is an irresistible book.”—Robert M. Sapolsky, author of Determined

The Unthinkable is the most magnificent account of a survivor’s mind that I have ever read. It has helped me know and accept some of my reactions during my seventy-two-day ordeal in the Andes. I can now understand how fear motivated me, and how denial also played a part. This book will help those who’ve never faced disaster to understand their own behavior and be prepared should their luck run out one day.”—Nando Parrado, author of Miracle in the Andes

The Unthinkable reveals why, under the same circumstances, some people caught up in a disaster survive and others do not. In her well-crafted prose, Amanda Ripley shows us all how to prepare to meet danger and increase our chances of surviving the unthinkable.”—Bruce Henderson, author of Down to the Sea and True North

“When a disaster occurs we invariably learn the ‘what’ of the event—how many died, how many survived. Amanda Ripley’s riveting The Unthinkable provides genuine insight into the ‘why’ behind the numbers. This remarkable book will not only change your life, it could very well save it.”—Gregg Olsen, author of The Deep Dark: Disaster and Redemption in America’s Richest Silver Mine

“Ever fantasize about what you would do in a disaster? How would you survive? How would you behave? After interviewing survivors of the World Trade Center attack, Amanda Ripley sifted through amazing tales of survivors from other disasters and mined various sociological, psychological, and neurological studies. Her insights are absolutely fascinating, and they could come in handy one day.”—Walter Isaacson, author of Elon Musk

Author

© Greg Martin
Amanda Ripley is a New York Times bestselling author, Washington Post contributor, and co-founder of Good Conflict, a company that helps people get smarter about how they fight. Her work has appeared in Time, Politico, The New York Times, The Atlantic, The Wall Street Journal, Slate, and Harvard Business Review. Her other books include The Smartest Kids in the World and High Conflict. View titles by Amanda Ripley

2025 Catalog for First-Year & Common Reading

We are delighted to present our new First-Year & Common Reading Catalog for 2025! From award-winning fiction, poetry, memoir, and biography to new books about science, technology, history, student success, the environment, public health, and current events, the titles presented in our common reading catalog will have students not only eagerly flipping through the pages,

Read more

Videos from the 2024 First-Year Experience® Conference are now available

We’re pleased to share videos from the 2024 First-Year Experience® Conference. Whether you weren’t able to join us at the conference or would simply like to hear the talks again, please take a moment to view the clips below.   Penguin Random House Author Breakfast Monday, February 19th, 7:15 – 8:45 am PST This event

Read more