Legislative changes can substantially impact the UPSC syllabus by introducing new topics or modifying existing ones. Such changes reflect evolving societal needs, government priorities, or advancements in various fields like science and technology. Moreover, incorporating current events or international relations into the syllabus ensures candidates are well-informed. These changes compel UPSC aspirants to continuously update their knowledge, making adaptability a crucial skill. Therefore, staying aware of legislative changes can greatly influence preparation strategies and success rates in the examination.