This text excerpts from a book exploring the "intelligence trap," the paradoxical ways high intelligence can lead to poor decision-making. It examines various case studies, including those of Nobel laureates and historical figures, to illustrate how cognitive biases and flawed reasoning affect even the most brilliant minds. The book also investigates psychological research on rationality, emotional intelligence, and expert error, proposing strategies to overcome these pitfalls. Furthermore, it explores the impact of educational systems and organizational structures on fostering or hindering effective thinking. Finally, it offers practical advice for improving individual and collective decision-making.