Think Again is a book about the benefit of doubt, and about how we can get better at embracing the unknown and the joy of being wrong. Evidence has shown that creative geniuses are not attached to one identity, but always willing to rethink their stances and that leaders who admit they don't know something and seek critical feedback lead more productive and innovative teams.

New evidence shows us that as a mindset and a skilllset, rethinking can be taught and Grant explains how to develop the necessary qualities to do it:

• Section 1: explores why we struggle to think again and how we can learn to do it as individuals, arguing that 'grit' alone can actually be counterproductive.
• Section 2: discusses how we can help others think again through learning about 'argument literacy'.
• And the final section 3: looks at how schools, businesses and governments fall short in building cultures that encourage rethinking.

The book argues that in today's fast-paced world, it is more important than ever to be willing to reconsider one's assumptions and to be open to changing one's mind. Grant contends that too often, people hold on to their beliefs too tightly, even in the face of evidence to the contrary. He describes this phenomenon as "mental rigidity" and suggests that it can lead to missed opportunities for growth and innovation.

To counteract mental rigidity, Grant offers practical advice for readers to develop their thinking skills. He encourages readers to challenge their assumptions, seek out diverse perspectives, and consider alternative explanations for the world around them. He also emphasizes the importance of humility, empathy, and curiosity in developing a growth mindset.

Throughout the book, Grant draws on research from psychology, sociology, and other fields to support his arguments. He shares examples of individuals and organizations that have successfully embraced a growth mindset, as well as those that have struggled with mental rigidity.

One of the key takeaways from the book is the concept of "unlearning." Grant argues that in order to embrace new ideas and ways of thinking, individuals and organizations need to be willing to let go of old assumptions and habits that are no longer serving them. He suggests that unlearning can be a difficult but essential process for personal and professional growth.

Overall, "Think Again" is a thought-provoking and engaging book that challenges readers to examine their own thinking and to be open to new ideas. It offers practical advice for how individuals and organizations can develop a growth mindset and embrace the power of knowing what they don't know.