Stupidity, as explored through the perspectives of Carlo Cipolla and Dietrich Bonhoeffer, emerges as a dangerous and underestimated societal force with the power to cause widespread harm. Cipolla’s economic framework highlights stupidity as a behavior that causes losses to others without personal gain, exacerbated by its unpredictability and presence in all walks of life. Bonhoeffer’s moral lens underscores how power, propaganda, and moral surrender amplify stupidity, making it resistant to reason and more dangerous than malice. Together, their insights reveal the interplay of social, psychological, and systemic factors that sustain stupidity, particularly when combined with authority. The article outlines actionable strategies to combat this pervasive issue, emphasizing critical thinking, personal accountability, and societal resilience. By understanding and addressing stupidity, individuals and communities can foster a more thoughtful, equitable, and informed society.