Why do some friendships last a lifetime while others fade away?
Welcome to The Rebel Reader #12: Friends by Robin Dunbar
Quick Take
Why do some friendships last a lifetime while others fade away? Friends by Robin Dunbar reveals the science behind our social lives and what makes relationships thrive.
Headline Insight
Friendship is essential to our health and happiness, but the size and depth of our social networks are limited by biology.
150-Word Review
Robin Dunbar’s Friends is a deep dive into the science of human relationships, unpacking why we form bonds and how they shape our lives. Dunbar, known for “Dunbar’s Number” (the idea that humans can maintain about 150 meaningful relationships), explains how our brains and social needs influence the size and strength of our social circles. For example, he shows that close friendships require regular maintenance — face-to-face time, shared experiences, and emotional investment.
Through a mix of anthropology, psychology, and personal anecdotes, Dunbar explores the layers of human connection, from casual acquaintances to lifelong confidants. This book is a reminder that investing in meaningful relationships is one of the best things we can do for our well-being.
Further Insights
Dunbar’s Number: Most people maintain around 5 close friends, 15 good friends, and 150 meaningful connections.
Friendship as Medicine: Strong social ties are linked to better health and longevity.
Digital Connection: Online interactions can’t fully replace in-person bonding.
Action Stations
Prioritise face-to-face time: Schedule regular meetups with close friends.
Strengthen connections: Reach out to someone in your circle who may need support.
Reflect on your network: Identify and nurture the relationships that matter most.
Join or Gift Rebel Book Club
Join Rebel Book Club - up your reading game and connect with curious minds in-person and online every month.