Think Again

Adam Grant's 2021 book (Viking) on the skill of rethinking: why smart people get trapped defending stale beliefs, how to argue like a scientist rather than a preacher, prosecutor, or politician, and how to build cultures where changing your mind is rewarded. Grant is an organizational psychologist at Wharton; the book debuted at #1 on the New York Times bestseller list.

Bill and Melinda Gates's endorsement is on the cover: "Think Again is a must-read for anyone who wants to create a culture of learning and exploration, whether at home, at work, or at school." The mechanisms are concrete enough to run an organization on. When a belief is challenged, most people slip into one of three modes — preacher (defending sacred ground), prosecutor (attacking the other side's logic), or politician (campaigning for approval) — and Grant's argument is to operate as a scientist instead: treat opinions as hypotheses, define what evidence would change them, and let the strongest data win over the loudest prior.

The founder-relevant material is in the case studies. Harish Natarajan, an international debate champion, shows that arguments are won by the person who asks better questions, not the one who talks more. Daryl Davis, a Black musician, persuaded more than two hundred Klan members to leave — by listening first. Grant's chapter on impostor syndrome reframes self-doubt as fuel for rethinking rather than a defect, and his organizational chapters separate psychological safety from accountability in a way that maps directly onto hiring for learning rate. The book's uncomfortable finding is also its thesis: being good at thinking can make you worse at rethinking.