At its core, Think Again – a book by Wharton professor, Adam Grant – is a book about learning how to learn better. Or as Grant might argue, “the ability to rethink and unlearn.”
Adam Grant doesn’t
ask readers to abandon their beliefs on demand. Instead, he suggest we build thinking systems that remain flexible under uncertainty, disagreement, and change. Most of us grow attached to our opinions. We embrace confirmation bias; we defend our opinions and fold them into our identities. This is where Grant asks us to step back. He invites us to treat beliefs as working drafts rather than permanent declarations.
The final section of Grant’s book, Actions for Impact, outlines seventeen practices for individual and interpersonal rethinking. At first they resemble advice. But they’re really carefully articulated thinking systems. Each provides a glimpse into a deeper mental models about how learning works.
Like Tiny Experiments, this book becomes more useful when its ideas are woven together. No single model stands alone (although some certainly can). Together they form a durable framework for adaptive thinking.
Individual Rethinking Models
(Actions for Impact – 9 models)
1. Scientist Mindset (Mental Model)
Action: Think like a scientist
Grant opens with a simple shift: wear a different pair of goggles. Instead of preaching beliefs or prosecuting opponents, adopt the posture of a scientist. Scientist do not defend ideas – they test them. As Grant writes for greater context:
“As we think and talk, we often slip into the mindsets of three different professions: preachers, prosecutors, and politicians. We go into preacher mode when our sacred beliefs are in jeopardy: we deliver sermons to protect and promote our ideals. We enter prosecutor mode when we recognize flaws in other people’s reasoning: we marshal arguments to prove them wrong and win our case. We shift into politician mode when we’re seeking to win over an audience: we campaign and lobby for the approval of our friends and colleagues (constituents). BUT being a scientist is not just a profession. It’s a frame of mind – a mode of thinking that differs from preaching, prosecuting, and politicking.”
“Thinking like a scientist involves more than just reacting with an open mind. It means being actively open-minded. It requires searching for reasons why we might be wrong – not for reasons why we must be right – and revising our views based on what we learn.”
This mindset changes the purpose of our thinking. The goal should no longer center on being right. Instead, it should focus on getting closer to the truth. Beliefs should merely be hypotheses, and evidence should serve as the referee. When people think like scientists, they let go of ego and embrace accuracy. They are willing to revise beliefs quickly, simply because revision signals progress.
2. Values-Based Identity (Mental Model)
Action: Define your identity in terms of values, not opinions.
Many people get stuck in their past beliefs simply because they fuse identity with ideology. When an opinion defines you, changing it feels like self-sabotage or surrender. Grant challenges this mentality. He suggests defining yourself by values rather than rigid positions. As he writes, “See yourself as someone who values curiosity, learning, mental flexibility, and searching for knowledge.”
3. Counter Evidence Seeking (Mental Method)
Action: Seek out information that goes against your views.
People naturally seek confirmation. Algorithms reinforce it. Social circles reward it.But confirmation bias closes the truth.
Adaptive thinkers look for friction, explore opposing arguments, ask critics to challenge their reasoning, and examine weak points before others expose them. This method strengthens thinking in two ways: it exposes blind spots and prevents premature certainty. Over time, the habit builds intellectual durability. Grant highlights several factors, including humility and the quest for knowledge, writing:
“When adults have the confidence to acknowledge what they don’t know, they pay more attention to how strong evidence is and spend more time reading material that contradicts their opinions. In rigorous studies of leadership effectiveness, the most productive and innovative teams aren’t run by leaders who are confident or humble. The most effective leaders score high in both confidence and humility.”
(AND)
“Great thinkers don’t harbor doubts because they’re imposters. They maintain doubts because they know we’re all partially blind and they’re committed to improving their sight. They don’t boast about how much they know; they marvel at how little they understand. They’re are that each answer raises new questions, and the quest for knowledge is never finished. A mark of lifelong learners is recognizing that they can learn something from everyone they meet.”
4. Confidence Calibration / Mount Stupid (Mental Model)
Action: Beware of getting stranded at the summit of Mount Stupid
Grant introduces the now-famous image of Mount Stupid to describe early overconfidence. A little knowledge often produces outsized certainty. As a result, people fail to question their opinions or recognize what they do not know. “We have just enough information to feel self-assured about making pronouncements and passing judgement, failing to realize that we’ve climbed to the top of Mount Stupid without making it over to the other side,” Grant writes.
Grant also highlights the Dunning-Kruger effect, a phenomenon aligned with the climbing of Mount Stupid. The Dunning-Kruger effect shows that the more confident we feel, the morel likely we are to overestimate ourselves. He writes:
“The more superior participants thought their knowledge was, the more they overestimated themselves – and the less interested they were in learning and updating. If you think you know more about history or science than most people, chances are you know less than you think. “The first rule of the Dunning-Kruger club is you don’t know you’re a member of the Dunning-Kruger club.””
5. Productive Doubt (Principle Model)
Action: Harness the benefit of doubt.
Doubt often feels uncomfortable. It slows decision-making and creates uncertainty. But it shouldn’t – and Grant reframes doubt as a strategic asset. In fact, he argues, productive doubt keeps the mind flexible. It prevents premature confidence and pushes curiosity forward. Instead of eroding confidence, calibrated doubt strenghtens it by ensuring convictions rest on evidence rather than inertia. “Knowing what you don’t know is often the first step toward developing expertise.” – Adam Grant.
6. The Joy of Being Wrong (Principle Model)
Action: Embrace the joy of being wrong.
Being wrong sucks – and for many, it’s a painful experience. If that’s true for you, Grant argues that you’re missing out on important opportunities. Every mistake reveals important information, and each correction sharpens understanding. Being wrong highlights movement, not failure. As Grant argues:
“Being wrong won’t always be joyful. The path to embracing mistakes is full of painful moments, and we handle those moments better when we remember they’re essential for progress. But if we can’t learn to find occasional glee in discovering we were wrong, it will be awfully hard to get anything right.” [Furthermore]: “People who are right a lot listen a lot, and they change their mind a lot,” Jeff Bezos says [Founder, Amazon.com]. If you don’t change your mind frequently, you’re going to be wrong a lot.”
7. Learn From Others (Principle Model)
Action: Learn something new from each person you meet.
Grant believes everyone holds knowledge you lack. Instead of evaluating others, study them. Instead of performing, you should inquire. Each conversation should be a learning opportunity. Each perspective adds dimension. “Ask people what they’ve been rethinking lately…” – Grant
8. Challenge Networks (Mental Method)
Action: Build a challenge network, not just a support network.
Support networks are meant to comfort, whereas challenge networks provide growth. Grant encourages his readers to surround themselves with thoughtful critics. These are individuals that challenge your thinking and pinpoint blind spots. The difference in the two networks is important: affirmation supports confidence, while constructive challenges sustains accuracy. Adaptive thinkers embrace relationship that challenge their ideas and thoughts. In fact, they prefer friction over flattery. As highlighted by Grant:
“We learn more from people who challenge our thought process than those who affirm our conclusions. Strong leaders engage their critics and make themselves stronger. Weak leaders silence their critics and make themselves weaker. This reaction isn’t limited to people in power. Although we might be on board with the principle, in practice we often miss out on the value of a challenge network.”
9. Constructive Conflict (Mental Method)
Action: Don’t shy away from constructive conflict
Many teams avoid conflict to preserve harmony. But this instinct actually weakens creativity and group learning. Constructive conflict is meant to separate people from problems. It directs mental fortitude towards improving solutions rather than protection the status quo. When handled with respect and understanding, disagreement should strengthen trust. It signals shared commitment to better answers. Avoided tension accumulates quietly; whereas addressed tension leads to calmer and more refined thinking. Grant’s advice: “Try framing disagreement as a debate: people are more likely to approach it intellectually and less likely to take it personally.”
Interpersonal Thinking
(Actions for Impact – 9 models)
10. Persuasive Listening (Mental Method)
Action: Practice the art of persuasive listening.
Persuasion rarely succeeds when it begins with argument, and instead should begin with listening. Grant highlights how attentive listening lowers defensiveness. It communicates respect and curiosity. More importantly, when people feel heard, tension dissipates. Conversations shifts from opposition to exploration. Grant’s advice: “How can you show an interest in helping people crystallize their own views and uncover their own reasons for change? A good way to start to is to increase your question-to-statement ratio.”
11. How-Over-Why Questioning (Mental Method)
Action:Question how rather than why
Grant argues that a single word can change the outcome of a difficult conversation. When we ask someone WHY they believe something, the question often feels accusatory – instead, people instinctively defend themselves. The better approach is to ask HOW. Asking how someone reached a conclusion invites them them to walk through their reasoning, often step-by-step. As they explain their thinking, gaps or uncertainties often appear naturally.
The How vs Why approach changes the tone of the discussion. Instead of pressing someone to justify a position, you’re instead asking them to examine it. This method often encourages people to rethink their assumptions on their own.
12. Evidence Threshold Questioning (Mental Method)
Action: Ask: “What evidence would change your mind?”
To help clarify a disagreement quickly: Asking what evidence would change someone’s mind reveals whether their belief remains flexible or fixed. If someone cannot foresee any evidence shifting their view, then the conversation has reached a boundary. At this point, the disagreement no longer concerns facts – it now simply concerns the person’s confirmation bias, identity, loyalty, or values. As Grant writes: It’s often more effective to inquire about what would open their minds, and then see if you can convince them on their own terms.”
13. Origin-Story Inquiry (Mental Method)
Action: Ask how people originally formed an opinion
Many beliefs form through experience rather than careful research. These experiences – stories, environments, and personal encounters are moments that shape how people view the world. Grant encourages us to explore those origins. It’s important to explore how beliefs first formed and avoid arguing over conclusions, and to examine the path that produced them. When people describe how their beliefs formed, they often feel understood rather than attacked.
14. Common Ground Framing (Mental Method)
Action: Acknowledge common ground
Productive disagreements rarely begin with opposition, but with shared values. Grant emphasizes the importance of identifying common ground early in a conversation.When people recognize areas of agreement, the emotional stakes fall. The discussion becomes less about defending an identity, and more about solving a problem together.
15. Minimal Persuasion (Mental Model)
Action: Remember that less is often more
Many people assume persuasion improves when arguments multiply. Grant shows the opposite is actually more effective. When we pile on arguments, the listener isn’t usually actively listening – they’re searching for flaws. One weak argument can undermine an entire case.
Experienced negotiators approach disagreements differently. Instead of pushing several arguments, they focus on a few strong points and dedicate time identifying shared ground with the other side. They keep their strongest ideas clear and uncluttered, while embracing areas of agreement. Far from signaling weakness, this move shows intellectual honesty. It also encourages the other side to engage seriously with the remaining points of disagreements. After seeking common ground and presenting fewer arguments, Grants makes his final observation:
The average negotiators were more likely to enter into defend-attack spirals. They dismissively shot down their opponents’ proposal and doubled down on their own positions, which prevented both sides from opening their minds. The skilled negotiators rarely went on offense or defense. Instead, they expressed curiosity with questions like “So you don’t see any merit in this proposal at all?” Questions were the fourth difference between the [average vs. skilled negotiators] groups. Of every five comments the experts made, at least one ended in a question mark.
16. Autonomy Reinforcement (Mental Model)
Action: Reinforce freedom of choice
People resist persuasion when they feel pressured. It’s why Grant recommends preserving the other person’s sense of autonomy. When individuals believe they remain free to choose, they evaluate ideas more openly. This is contrast to fostering pressure – which often triggers stubbornness – while freedom (to choose) invites reflection. As Grant writes, “It helps to respect their autonomy by reminding them that it’s up to them to choose what they believe.”
17. Meta-Conversation Framing (Mental Method)
Action: Have a conversation about the conversation
Sometimes a disagreement stalls simply because the discussion lost direction. The tone shifts, frustration builds, and neither side feels hear. Grant suggests stepping outside the argument for a moment, talk about where the conversation is headed, clarify goals, expectations, and tone. This simple reset often restores momentum. Once both sides understand the process, the discussion can move forward with greater clarity.