Nudge by Thaler and Sunstein, explores the concept of libertarian paternalism, suggesting that it is possible and desirable for choice architects in both public and private sectors to influence individuals' decisions in ways that make them better off, without limiting their freedom of choice. The authors argue that because humans often deviate from rational behavior due to predictable cognitive biases, carefully designed "nudges" can guide them toward improved outcomes in areas such as savings, health, and environmental choices. The book provides numerous examples and proposes various choice architecture interventions, emphasizing transparency and the preservation of individual liberty while promoting well-being.