How Reason Almost Lost Its Mind

The Cold War’s New Definition of Reason

When I worked on this book with my co-authors, I discovered how something as basic as “reason” can be redefined by history. During the Cold War, rationality was no longer just a human virtue. It became a strategy — a way to calculate, predict, and survive in a time of unprecedented danger.

This book traces how rationality was recast in the language of computers, game theory, child psychology, and nuclear strategy. It shows how those shifts transformed science, politics, and the way we still think about reason today.

When Thinking Became Survival

This book asks what happens when thinking itself is pressed into service as a weapon. Understanding that story helps us see how today’s definitions of logic, efficiency, and “rational choice” grew out of Cold War fears — and why they still shape debates about policy, science, and even daily life.

When Rationality Was Redefined

In this book, my co-authors and I explore how reason was retooled during the Cold War. I’ve always been drawn to the question of how big ideas shift when they’re put under pressure — and few ideas have been under more pressure than rationality itself.

Along the way, we explore themes like:

• Game theory and nuclear strategy as models for survival.
• Computers and cybernetics as new metaphors for the mind.
• The role of science in defining what counts as “reasonable.”
• The lasting legacy of Cold War rationality in today’s politics, economics, and culture.

What strikes me most is how fragile the concept of reason turned out to be. It was stretched, bent, and recast to fit the anxieties of the nuclear age — and those changes still echo in how we think today.

So let me tell you who we had in mind as we wrote.

For Those Who Wonder How We Define Reason

I wrote this book with my co-authors for readers who want to see how even “reason” itself can shift. During the Cold War, rationality was recast in the language of survival and strategy and as something that could be calculated. If you’ve ever wondered what we really mean by reason — or how its meaning has changed — this book is for you.

It’s also meant for:

• Professionals — historians, political scientists, policy analysts, and anyone working where logic and decision-making guide high-stakes outcomes.
• Curious readers — people who want a story that connects the Cold War to the way we think today.
• Those reflecting on reason itself — readers who want to question what it really means to be “rational.”

This book isn’t meant to reduce the Cold War to theory. It’s an invitation to think more deeply about what we mean by reason — and how fragile even our most trusted ideas can be.

Praise for How Reason Almost Lost Its Mind