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Cover of Think Again by Adam Grant

Highly recommended

Think Again

The Power of Knowing What You Don't Know

by Adam Grant

The ability to rethink and unlearn is a superpower. How to question your own opinions and open other minds.

  • Published 2021
  • Moderate
  • Science and research
  • 2 min analysis
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Introduction

Organizational psychologist Adam Grant argues that in a fast-changing world, the ability to rethink and unlearn may matter more than intelligence. Yet we often cling to old views.

Think Again explores how to question our own opinions, open others' minds and build cultures of learning.

Who should read this book?

Curious readers, leaders, teachers, parents and anyone who wants to make better decisions or have more productive disagreements.

Helps with: Communicate and persuade, Think and decide more clearly

The central message

Think like a scientist: treat opinions as hypotheses, seek evidence, and be willing to change your mind.

Key ideas and concepts

  1. Preacher, prosecutor, politician

    We often defend beliefs (preacher), attack others (prosecutor) or seek approval (politician) instead of testing ideas (scientist).

  2. Confident humility

    Be confident in your ability to learn while humble about current knowledge.

  3. The joy of being wrong

    Discovering errors means you've learned something.

  4. Motivational interviewing

    Ask questions and listen to help others find their own reasons for change.

  5. Learning cultures

    Teams improve when people feel safe to question and admit mistakes.

Deeper analysis

Think Again is engaging and timely. Grant combines research with vivid stories, from firefighters to vaccine conversations, to show why rethinking matters and how it can be learned. The 'think like a scientist' frame is memorable and useful both for personal decisions and for disagreements, and the chapters on motivational interviewing offer practical ways to open other people's minds without arguing.

Some readers find the book light on step-by-step methods and heavy on anecdotes. It may also understate how hard it is to change beliefs that are tied to identity, family or community, where changing your mind can carry real social costs. Still, it's one of the most accessible guides to intellectual humility, and its lessons are especially relevant in polarized times.

Practical applications

  • Write down a belief you hold strongly and look for counterevidence.
  • In a disagreement, ask questions instead of arguing.
  • Say 'I could be wrong' more often.
  • Review a past decision you'd make differently now.
  • Encourage your team to challenge ideas.

Your 7-day action plan

  1. Day 1

    Identify a belief you've never questioned.

  2. Day 2

    Find evidence against it.

  3. Day 3

    Ask someone with a different view to explain theirs.

  4. Day 4

    Practise motivational interviewing questions.

  5. Day 5

    Admit one mistake.

  6. Day 6

    Encourage open challenge in a meeting.

  7. Day 7

    Reflect on what you rethought.

Outcomes to expect

What readers who apply this book can realistically take away from it:

  • Greater intellectual humility and curiosity
  • Better conversations with people who disagree
  • More willingness to update decisions
  • Practical skills for helping others reconsider

Strengths and limitations

Strengths

  • Engaging and well researched
  • The scientist mindset is a memorable, practical frame
  • Useful tools for productive disagreements
  • Relevant to work, relationships and public debate

Limitations

  • Relies heavily on anecdotes
  • Fewer step-by-step methods than some readers want
  • Understates the social cost of changing identity-linked beliefs

Reflection questions

  1. When did you last change your mind?
  2. Which beliefs are part of your identity?
  3. How do you react when challenged?
  4. How could you be more of a scientist?

About the author

Adam Grant

Organizational psychologist at the Wharton School and author of books on rethinking, potential and work.

Full profile and books
Cover of Think Again by Adam Grant

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Book details (title, author, year) are factual. Everything under the headings above is MindsetProdigy's own editorial analysis and interpretation, written to help you decide whether to read the book and how to apply it. It is not a substitute for reading the book itself. Last updated September 27, 2026.