Our series of book recommendations to empower talent and fuel brands.

Why Perpetual recommends it
Adam Grant’s Think Again is a case for intellectual humility dressed up as one of the most readable books on cognition in years. Grant, an organisational psychologist, argues that in a world that prizes conviction and confident answers, the rarer and more valuable skill is the willingness to rethink — to treat your own opinions as drafts rather than finished products.
The book draws a memorable distinction between four professional identities we default into when we’re wrong: the preacher, who defends a sacred belief; the prosecutor, who tries to win an argument; the politician, who seeks approval; and the scientist, who treats being wrong as useful data. Grant makes a compelling case that leaders, teams and even entire organisations perform better when they operate more like scientists — running experiments, seeking disconfirming evidence, and updating readily.
We come back to this book often because rethinking is a genuine organisational skill, not just a personal virtue. Teams with high psychological safety rethink faster because disagreement doesn’t feel dangerous. It’s one of the clearest links we’ve found between an individual cognitive habit and the collective health of a team.
Grant tells the story of firefighters at Mann Gulch who died because they couldn’t let go of their tools and outrun a wildfire, versus their foreman who instantly abandoned his equipment and survived. It’s a stark metaphor for organisations: the identities, tools and strategies that got a team to where it is can become exactly what prevents it from adapting when conditions change.
- Confident answers are often mistaken for competence, but rethinking is the rarer skill
- We default into preacher, prosecutor or politician mode far more often than scientist mode
- Psychological safety is what allows teams to rethink quickly instead of defending positions
- Seeking out people who disagree with you is a discipline, not a discomfort to avoid
A simple habit worth adopting is scheduling a standing ‘devil’s advocate’ role in major decisions, so someone is explicitly rewarded for challenging the plan rather than everyone quietly defending it.
We give this book four and a half out of five stars.