The significance of interdisciplinary knowledge in UPSC preparation lies in its ability to foster a holistic understanding of complex issues. Integrating insights from various disciplines, such as politics, economics, and sociology, equips aspirants to analyze problems from multiple perspectives. Such comprehensive knowledge enhances critical thinking and enables the articulation of informed arguments, essential for essay writing and interviews. Additionally, interdisciplinary studies prepare candidates to tackle contemporary issues that do not fit neatly into one category. Overall, this knowledge is vital for effective decision-making in governance.