Think Again by Adam Grant Review: A Persuasive Case for Intellectual Humility

Adam Grant, an organizational psychologist at Wharton and the bestselling author of Give and Take, Originals, and Hidden Potential, opens Think Again with a counterintuitive premise: in a rapidly changing world, intelligence as conventionally defined — the ability to think and learn — may matter less than the ability to rethink and unlearn. The book's central argument is that people fall into habitual modes of defending what they already believe: preaching to protect their own views, prosecuting to attack other people's reasoning, and politicking to campaign for support. Against these, Grant sets what he calls "scientist mode" — treating opinions as experiments to be tested, actively seeking out reasons you might be wrong, and updating when the evidence shifts.

The book is organized around three escalating challenges, as outlined in summaries of its structure: first, opening your own mind; second, persuading other people to think again; third, building communities — workplaces, schools, relationships — in which lifelong learning and productive disagreement are the norm rather than the exception. That architecture gives the book a clear arc from individual habit to collective culture, and it means the later chapters are less about self-correction than about how arguments, negotiations, and institutions can be designed to reward rethinking.

Grant's method throughout is to anchor each idea in research from psychology and then dramatize it through an extended real-world case. The publisher's synopsis names the marquee examples directly: an international debate champion who wins arguments by conceding ground strategically; Daryl Davis, the Black musician who has persuaded white supremacists to abandon hate; a "vaccine whisperer" who convinces hesitant parents to immunize their children; and Grant's own efforts to coax Yankees fans into rooting for the Red Sox. These stories carry the book's practical payload — techniques like motivational interviewing, finding common ground before contesting it, and asking questions rather than making assertions.

The through-line, per the publisher's framing, is that "we don't have to believe everything we think or internalize everything we feel" — that mental flexibility, humility, and curiosity beat "foolish consistency." Readers who enjoy Malcolm Gladwell-style narrative nonfiction will recognize the register: counterintuitive findings, memorable characters, and frameworks compact enough to repeat in a meeting. That is the book's design, and it executes it deliberately.

Think Again arrived with substantial institutional momentum. It was a #1 New York Times bestseller, and critics named it a best nonfiction book of 2021, the year of its original publication. The publisher's materials quote the Financial Times calling it "a refreshing mandate for humble open-mindedness" and carry endorsements from figures including Brené Brown, who describes Grant weaving together research and storytelling to build "the intellectual and emotional muscle" for staying curious. This edition is the Penguin Books paperback, published December 26, 2023, following the 2021 hardcover.

Within Grant's body of work, the book occupies a natural slot: where Give and Take examined generosity and Originals examined nonconformity, Think Again examines cognitive flexibility — arguably the most inward-facing of his major titles, since its first target is the reader's own certainty rather than other people's behavior.

The book's strengths and limitations come from the same source. Because Grant writes for a general audience, the argument is carried by anecdotes and digestible studies rather than deep engagement with the underlying academic literature; readers who want methodological rigor, or who already follow the psychology of reasoning closely, will find much of the territory familiar. The preacher-prosecutor-politician-versus-scientist framework is memorable, but it is also a repackaging of ideas about motivated reasoning and intellectual humility that have circulated for years — the value here is in the packaging and application, not conceptual novelty.

It is also worth stating this review's scope plainly: Think Again is, functionally, a how-to book, and its real test is whether its techniques change how a reader argues, hires, or decides. This review is based on the published record — the book's stated contents and its documented reception — not on applying its methods in practice.

Think Again suits managers, educators, and anyone whose work involves persuasion or group decision-making, as well as general readers who want a structured prompt to audit their own convictions. It reads quickly, its advice is framed to be acted on, and its central provocation — that knowing what you don't know is a form of wisdom — lands with particular force in a polarized moment. Readers seeking a rigorous scholarly treatment of cognitive bias should look elsewhere; readers seeking an engaging, research-grounded brief for changing their minds more often will find exactly that here.