Think Again
A Deep Dive Into Adam Grant’s Case for Changing Your Mind
A Mind Set in Stone Blog Deep Dive
We tend to treat our opinions like they’re a part of us. Challenge someone’s stance on politics, parenting, or even which project management tool is best, and it can feel less like a disagreement and more like a personal attack. Organisational psychologist Adam Grant thinks that’s the problem, not human nature.
In Think Again: The Power of Knowing What You Don’t Know, Grant makes the case that the ability to doubt what you know, question your own opinions, and update your beliefs when the evidence changes isn’t a weakness. It’s a skill, and one most of us have let go rusty. We’re taught to value conviction, confidence, and grit. Grant argues we should be equally proud of changing our minds.
The book is built around a simple but genuinely uncomfortable question: how often do you actually rethink something you believe, rather than just defending it harder? In this deep dive, we’ll walk through the book’s core framework, 10 practical tips you can start using immediately, and a quiz to see how much of it stuck. Let’s get into it.
The Foundation: Four Ways We Think
Grant opens with a framework for the different “hats” we wear when we think, and argues that most of us default to the wrong ones far too often.
- The Preacher – defends a sacred belief and tries to convert others to it
- The Prosecutor – builds a case to prove someone else wrong
- The Politician – campaigns for approval, telling people what they want to hear
- The Scientist – treats an opinion as a hypothesis to test, actively looking for reasons it might be wrong
Most of us cycle through preacher, prosecutor, and politician mode without noticing, especially when a belief feels close to our identity. The scientist mode is different. It treats being wrong not as a defeat but as data. Grant’s argument is that the people who make the best decisions, in business, relationships, and life generally, are the ones who can slip into scientist mode on command, separating their opinions from their ego enough to actually examine them.
This single shift, from defending what you think to testing what you think, is the thread that runs through the entire book. Everything else builds on it.
10 Tips and Tricks From Think Again
- Catch yourself switching into preacher, prosecutor, or politician mode
Before you can think like a scientist, you have to notice when you’re not. Grant suggests paying attention to your internal reaction the moment someone challenges a belief you hold. Do you feel a pull to defend, to win, or to please? That reaction is the tell.
Example: In a work debate about whether to launch a product early or wait, notice if your first instinct is to build a stronger case for your original position (prosecutor) rather than genuinely asking whether the new information changes anything. Catching that reflex is the first step to overriding it.
- Detach your opinions from your identity
Grant argues that a lot of our resistance to changing our minds isn’t really about the topic. It’s about what changing our minds would mean for who we think we are. If “I’m the person who always trusts my gut” is part of your identity, admitting your gut was wrong feels like losing a piece of yourself.
Example: Instead of saying “I’m a Mac person” or “I’m someone who never negotiates,” try holding opinions more loosely: “I currently think X, based on what I know now.” That small language shift makes it much easier to update later without it feeling like a personal defeat.
- Actively look for the joy of being wrong
Most of us treat being wrong as something to avoid or hide. Grant flips this: finding out you were wrong about something means you’ve just gotten smarter than you were yesterday. That’s worth celebrating, not dreading.
Example: The next time a colleague points out a flaw in your plan, instead of getting defensive, try genuinely thanking them. Reframe it internally as “I just avoided making this mistake at a bigger scale later,” rather than “I got caught being wrong.”
- Use impostor syndrome as a rethinking advantage
Counterintuitively, Grant argues that a touch of impostor syndrome can make you a better thinker, not a worse one. If you’re not fully convinced you’re the smartest person in the room, you’re more likely to ask questions, welcome pushback, and stay open to being corrected.
Example: Before a big presentation, instead of trying to talk yourself into total certainty, let a bit of doubt stay in the room. It’ll make you more likely to actually listen when someone in the audience raises a good counterpoint, rather than dismissing it to protect your confidence.
- Build a challenge network, not just a support network
A support network cheers you on. A challenge network, Grant argues, is made up of people you trust to tell you when you’re wrong, not just when you’re right. Both matter, but most of us are heavily stacked toward the first and starved of the second.
Example: Identify one or two people in your life or work who disagree with you often and respectfully. Actively ask them, “what am I missing here?” before a big decision, rather than only running ideas past people you know will agree.
- Separate task conflict from relationship conflict
Grant draws a clear line between disagreeing about ideas (task conflict, which can be genuinely productive) and disagreeing in a way that turns personal (relationship conflict, which almost never is). The goal isn’t to avoid disagreement. It’s to keep it about the argument, not the person.
Example: In a heated team debate, if you notice the conversation shifting from “here’s a flaw in this plan” to “you always do this,” that’s the moment to name it directly: “let’s keep this about the idea, not about each other,” and steer it back.
- Use questions to help others rethink, not arguments to beat them
One of the book’s most practical sections draws on motivational interviewing, a technique originally developed for addiction counselling. Instead of trying to out-argue someone into agreeing with you, you ask open questions that let them talk themselves into reconsidering.
Example: Rather than telling a friend why their business idea won’t work, try asking, “what would need to be true for this to succeed?” or “what’s made you confident about this part?” People are far more likely to rethink a position they arrived at themselves than one you argued them out of.
- Ask “how do you know?” instead of debating the conclusion
Arguing directly over a conclusion tends to make people dig in harder. Grant suggests a different move: get curious about the reasoning behind the belief, not just the belief itself.
Example: Instead of debating whether a colleague’s forecast is right or wrong, ask them to walk you through how they got there. Often, the act of explaining their own reasoning out loud surfaces gaps they hadn’t noticed themselves, without you having to point them out.
- Complexify contentious topics instead of oversimplifying them
On divisive issues, Grant found that people became more open to rethinking not when the topic was simplified into two opposing camps, but when it was made appropriately complex, acknowledging the genuine nuance and trade-offs involved.
Example: In a tense conversation about a controversial workplace policy, instead of framing it as “you’re either for this or against it,” try naming the real trade-offs out loud: “there’s a real cost either way here, what matters most to you about this?” That tends to lower defences rather than raise them.
- Schedule regular rethinking check-ins
Grant suggests deliberately building rethinking into your routine rather than waiting for a crisis to force it. He calls it a kind of psychological due diligence: periodically asking whether a belief, plan, or identity you’ve been carrying still holds up.
Example: Set a recurring reminder, quarterly works well, to revisit a handful of your firmer opinions (about your career, your industry, your relationships) and genuinely ask, “would I form this same view again today, knowing what I now know?”
Why This Approach Actually Works
What makes Think Again land differently from most self-improvement advice is that it doesn’t ask you to become less confident. It asks you to become confident in a different thing: your ability to find the truth, rather than your ability to be right. Grant calls this confident humility, believing in your capacity to figure things out while staying genuinely uncertain about whether you’ve figured out this particular thing correctly yet.
That distinction matters because it’s the difference between someone who feels threatened by disagreement and someone who’s energised by it. The second kind of person, Grant argues, is the one who actually gets better over time.
Test Your Knowledge: The Think Again Quiz
Think you’ve got the framework down? Try these 10 questions and check your answers at the end.
1.Which of the four thinking “hats” treats an opinion as a hypothesis to test?
A) The Preacher
B) The Prosecutor
C) The Politician
D) The Scientist
2.According to Grant, why do we often resist changing our minds?
A) We don’t have enough information
B) Our opinions become tied to our identity
C) Changing your mind is always the wrong choice
D) Other people rarely have good points
3.What does Grant say about a moderate amount of impostor syndrome?
A) It should be eliminated entirely
B) It can make you a more open, better listener
C) It has no effect on how you think
D) It only affects beginners
4.A “challenge network” is best described as:
A) A group of people who only agree with you
B) People you trust to tell you when you’re wrong
C) A network used purely for professional advancement
D) A team assigned to debate you formally
5.What’s the key difference between task conflict and relationship conflict?
A) There is no meaningful difference
B) Task conflict is about ideas; relationship conflict becomes personal
C) Relationship conflict is always more productive
D) Task conflict should always be avoided
6.Motivational interviewing, as applied in the book, is primarily about:
A) Arguing more persuasively
B) Asking questions that help someone rethink for themselves
C) Interviewing job candidates more effectively
D) Avoiding difficult conversations altogether
7.Asking “how do you know?” instead of debating a conclusion helps because:
A) It puts the other person on the defensive
B) It surfaces gaps in reasoning without direct confrontation
C) It always proves the other person wrong
D) It ends the conversation faster
8.Grant found that people became more open to rethinking divisive topics when the topic was:
A) Simplified into two clear sides
B) Avoided altogether
C) Made appropriately complex, acknowledging real trade-offs
D) Left entirely to experts
9.“Confident humility,” as defined in the book, means:
A) Being confident in your conclusions and rarely questioning them
B) Being humble to the point of self-doubt in every decision
C) Believing in your ability to figure things out while staying open about being wrong
D) Avoiding confidence altogether
10.The overall argument of Think Again is that:
A) Certainty is always more valuable than doubt
B) Changing your mind is a sign of weakness
C) The ability to rethink is a skill worth actively building
D) Experts should never be questioned
Keep the Conversation Going on Mind Set in Stone 🎙️
Want to go even deeper into Think Again and hear how these ideas actually play out in real conversations? Tune into the Mind Set in Stone Podcast, where we unpack books like this one and talk through practical ways to put the lessons into action. Expect honest discussion, a few laughs, and takeaways you can actually use. Listen now on Spotify, Apple Music, and YouTube.
Quiz Answers
- D – The Scientist
- B – Our opinions become tied to our identity
- B – It can make you a more open, better listener
- B – People you trust to tell you when you’re wrong
- B – Task conflict is about ideas; relationship conflict becomes personal
- B – Asking questions that help someone rethink for themselves
- B – It surfaces gaps in reasoning without direct confrontation
- C – Made appropriately complex, acknowledging real trade-offs
- C – Believing in your ability to figure things out while staying open about being wrong
- C – The ability to rethink is a skill worth actively building