Amazon · Goodreads
When I picked this up, my first reaction was skepticism. Another book about keeping an open mind. Another researcher at a prestigious university telling me that smart people should be willing to be wrong. I have been here before. After spending time with Carol Dweck’s research on fixed and growth mindsets, I figured this would cover the same ground with different anecdotes.
It does not. And the reason it does not is one specific argument that Grant makes early in the book and that I have not stopped thinking about since.
The Uncomfortable Insight
Intelligence, Grant argues, does not make you better at reconsidering your positions. In many cases it makes you worse. The smarter you are, the better you become at constructing arguments that defend what you already believe. You get more skilled at finding flaws in opposing views. You become more efficient at dismissing evidence that contradicts your current understanding. Your intelligence becomes a tool for entrenchment rather than for discovery.
That one idea reframes a lot of what I thought I understood about learning and growth. The growth mindset that Dweck describes is about believing you can improve. Grant is pointing to something adjacent but distinct: the willingness to recognize that what you currently believe might actually be wrong, and to treat that possibility as interesting rather than threatening.
Those are not the same skill, and developing one does not automatically develop the other.
The Four Modes Framework
Grant organizes the book around the observation that in any given conversation or decision, we tend to slip into one of three unproductive modes. Preacher mode, where we defend our positions as though they are sacred beliefs worth protecting. Prosecutor mode, where we focus on finding flaws in what others are saying rather than genuinely engaging with it. Politician mode, where we perform agreement or adjust our stated views based on what the audience seems to want to hear.
The alternative he proposes is scientist mode: holding your current beliefs as hypotheses rather than conclusions, running experiments when possible, and being genuinely willing to update your views when the data warrants it. In scientist mode, changing your mind is evidence of intellectual integrity rather than weakness. In any of the other three modes, it is experienced as either defeat or inconsistency.
This framework is simple enough to feel obvious and specific enough to be genuinely useful. I have caught myself in prosecutor mode during product discussions where I was so focused on why a colleague’s proposal would not work that I stopped being able to see where it might. I have watched the preacher mode play out in strategy meetings where someone’s sunk cost in a particular direction becomes indistinguishable from their identity. Grant’s vocabulary for these patterns makes them easier to notice and, therefore, easier to interrupt.
What the BlackBerry Story Gets Right
Grant uses the collapse of BlackBerry as a case study in preacher mode at the organizational level. The company’s leadership had so thoroughly identified with the idea of the physical keyboard that they could not seriously evaluate the threat from touchscreen competitors. Their deep expertise in what mobile devices had been became an obstacle to understanding what they were becoming.
He makes the same point about Einstein, who after revolutionizing physics became one of the most resistant voices against quantum mechanics. The person who had most radically rethought physics in one generation became one of its most committed preachers in the next. Expertise creates conviction. Conviction hardens into preaching. Grant’s argument is that the only defense against this pattern is actively building the habit of rethinking before you need it.
This landed differently for me than similar observations in Essentialism or The Courage to Be Disliked. Those books push toward clarity about what matters and independence from others’ approval. This one pushes toward a specific kind of intellectual humility that runs alongside those things rather than replacing them. You can be clear about your values and still treat your factual beliefs as hypotheses. The distinction matters.
Where It Loses Some Momentum
The first third of the book, on individual rethinking, is the strongest. Grant is working in his clearest register there, drawing on well-documented research and specific examples to build a case that genuinely surprised me.
The middle section on interpersonal rethinking, how to help others reconsider their views, covers useful ground but at a different pace. Some of the guidance on motivational interviewing and how to disagree productively is valuable. Some of it moves toward territory that 10% Happier covers more directly in its treatment of how to engage with disagreement without getting pulled into it. Neither book renders the other redundant, but readers who have covered that ground will feel it.
The final section on collective rethinking, building organizations and communities that can update their beliefs, is the most abstract. The examples are interesting. The practical guidance is thinner than in the first two sections. Grant acknowledges this is harder terrain, and it shows.
What Stays With Me
The observation about confident humility is one I return to regularly. Grant distinguishes between confidence in your ability to achieve something and humility about whether your current methods and beliefs are the right ones to get you there. High confidence, high humility. You can have both simultaneously. In fact, the best performers tend to.
That pairing is something I have tried to apply in my own work. Being sure about what you are trying to build while staying genuinely open to being wrong about how to build it is harder than it sounds. Grant gives you useful language for practicing it.
Verdict
Read the first half carefully and let it do its work. The four-mode framework alone is worth the time. If you have read Mindset and want to go further into the specific intellectual habits that sustained growth requires, this book picks up where Dweck leaves off and takes the argument somewhere different.More book reviews and writing are available on my journal page.
