Cognitive Surplus by Clay Shirky explores how the digital age has unlocked the collective creativity and productivity of individuals worldwide. Shirky argues that modern technology allows people to use their free time for collaborative, socially beneficial activities rather than passive consumption. From Wikipedia to social media movements, he highlights examples of how shared resources and connectivity enable innovation and civic engagement. The book encourages a shift toward leveraging this surplus of time and energy to create value and solve problems, offering an optimistic vision of technology’s potential to transform society.