Intelligence is usually seen as the ability to think and learn, but in a rapidly changing world, there's another set of cognitive skills that might matter more: the ability to rethink and unlearn. In recent months, the pandemic has forced us all to reevaluate our assumptions about health and safety and multiple acts of police brutality have challenged most of us to reconsider our responsibility for fighting racism. Yet in our daily lives, too many of us still favor the comfort of conviction over the discomfort of doubt. We listen to opinions that make us feel good, instead of ideas that make us think hard. 'Think Again' reveals that we don't have to believe everything we think or internalize everything we feel. It's an invitation to let go of views that are no longer serving us well and prize mental flexibility, humility, and curiosity over foolish consistency.