Interdisciplinary learning is significant in the context of UPSC subjects as it fosters a holistic understanding of complex issues. Candidates are encouraged to integrate knowledge from varied fields like Economics, Political Science, and Geography to tackle questions that require comprehensive insights. This approach aids in developing critical analysis skills essential for the examination and helps candidates examine topics from multiple perspectives. Additionally, subjects are interconnected in real-world scenarios, enhancing candidates' ability to create workable solutions when addressing diverse problems encountered in civil service roles.